View Full Version : Pypes Off-Road H-Pipe Install (w/pics)


TacoBill
04-17-2007, 01:52 PM
Current axle-back exhaust: FRPP/Borla Stingers

Pypes tubing diameter: 2.50"
Pypes H slip fitting diameters:
Female OD (drivers side): 2.150"
Male OD (passengers side): 1.990"


When the box was delivered, it looked like it was in bad shape. I was worried that the pipes were dented or something, but everything was okay.
http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0191.jpg


Here's the H-Pipe layed out straight from the box.
http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0193.jpg

http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0194.jpg


Passengers side forward O2 sensor and manifold flange.
http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0195.jpg


Passengers side rear O2 sensor.
http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0196.jpg


Drivers side rear O2 sensor.
http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0197.jpg


The 2 rear O2 sensors (colored BLUE).
Note: On Automatics, the rear O2 sensor plugs are conviently plugged right next to each other.
http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0198.jpg

http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0199.jpg


Next came time to unplug the (passenger side) forward O2 sensor (colored GREEN). This proved to be a royal pain in the butt. I tried to reach the connection plug from the bottom (impossible) and from the top (barely touching my fingers on the plug). Not to waste anymore time, I yanked the battery and tray out. Problem solved.
http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0200.jpg

http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0235.jpg

http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0202.jpg


Now it was time to break loose the exhaust manifold bolts. You need a swivel, deep socket, and a long extension to accomplish this, especially for the upper nuts. After fighting the nuts for several minutes (wouldn't budge for the life of me), I sprayed some penetrating oil on the nuts and like magic, they came off with minimal effort! Who knew...

Now it was time to loosen the mid-pipe clamps. They loosed up no problem, but would not slide back onto the over-axle side of the pipes. After wasting more time messing with them, I discovered that you have to lift up on this little tab that indexes with an alignment rivet (just like the muffler pipe to over-axle pipe). Use a screwdriver and gently lift up on the tab.
http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0206.jpg


Once all is loose and ready to drop, carefully pull the hanger rods from the rubber mounts and it'll come down.

A 22mm open end wrench was used to remove the O2 sensors. I moved them over one at a time. I used a dab of anti-sieze lube on the O2 sensor threads before screwing them into the threaded boss of the H-Pipe.
http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0212.jpg

http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0216.jpg


Because I just wanted to install this thing, I chose to use the included saddle clamp. I orientated them facing aft at first, but discovered that it'll interfere with the mid-pipe clamps when tightening. So, I face them forward. A drop of red Loctite was used on the clamp nuts.
http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0217.jpg


Side-by-side comparison between the factory H-Pipe and the Pypes Off-Road H.
http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0219.jpg

http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0221.jpg

http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0222.jpg

http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0226.jpg


Everything gets re-installed like it was. I put some Anti-Sieze on thet threads of the O2 sensors and on the manifold nuts. And don't forget to reconnect all 3 O2 sensors! I left tightening the the 'H' saddle clamp until last so there's no preload in that section. That clamp is a piece, you can't really crank down on those nuts because they'll start to slip. I'll definately keep an eye on this clamp for any loosening or slipping. ** UPDATE: after 8 months, clamp is still on tight. **
http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0231.jpg



Installation complete!

The sound israw and pure! Be forwarned though, if you dislike any droning sounds at all, this O/R-H may not be for you. However, if you're intoloud and obnoxious, this is most definitely for you!

Here's some vids (the camera mic doesn't even come close to what it actually sounds like, but you get the idea.)

video 1 (http://smg.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/?action=view&current=MVI_0243.flv): Launch; windows up
video 2 (http://smg.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/?action=view&current=MVI_0244.flv): From a roll; windows down
video 3 (http://smg.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/?action=view&current=MVI_0241.flv): Start and revs

40thgtfl
04-17-2007, 01:58 PM
great write up! this should bea sticky.

Brute03
04-17-2007, 02:08 PM
great write up man. so s-197's only have one upstream o2 sensor?

TacoBill
04-17-2007, 02:14 PM
ORIGINAL: Brute03

great write up man. so s-197's only have one upstream o2 sensor?

Yes, only one upstream on the passenger side (green wire).

http://img.photobucket.com/albums/v673/tacobill35/Pypes%20Off-Road%20H-Pipe%20install/IMG_0219.jpg

modular81
04-17-2007, 02:37 PM
ORIGINAL: Brute03

great write up man. so s-197's only have one upstream o2 sensor?

Actually they have two upstream o2 sensors and two downstreams. The drivers side front o2 is located on the exhaust manifold, so it doesn't go on the mid pipe like the passengers side does.

TacoBill
04-17-2007, 02:40 PM
ORIGINAL: modular81

ORIGINAL: Brute03

great write up man. so s-197's only have one upstream o2 sensor?

Actually they have two upstream o2 sensors and two downstreams. The drivers side front o2 is located on the exhaust manifold, so it doesn't go on the mid pipe like the passengers side does.

Yes, you're correct. However, I just thought the question was pertaining to the mid-pipe.

SonicBlue05GT
04-17-2007, 03:00 PM
i just got the same H-Pipe for mine, but with Flows on there.

damn your engine bay is spotless....

UrS4
04-17-2007, 03:06 PM
Tacobill,

Why did you chose to disconnet the O2 sensors instead of just unscrewing them from the mid pipe, installing the new mid pipe and then screwing back in the O2 sensors?

Was it because it is hard to get a wrench to them while still connected to the mid pipe?

bboren
04-17-2007, 08:24 PM
Tacobill,

Why did you chose to disconnet the O2 sensors instead of just unscrewing them from the mid pipe, installing the new mid pipe and then screwing back in the O2 sensors?

Was it because it is hard to get a wrench to them while still connected to the mid pipe?


i did it the same way as he did. i imagine if you left them plugged in and unscrewed them, it would twist the wires and possibly break them.

Stoenr
04-17-2007, 08:40 PM
I thought you did this along time ago Bill? Just now a how to? I swear I read this before?

jettaflavor
04-17-2007, 08:47 PM
Dang - good job. Cops say anything about the noise?

TacoBill
04-17-2007, 09:25 PM
ORIGINAL: UrS4

Tacobill,

Why did you chose to disconnet the O2 sensors instead of just unscrewing them from the mid pipe, installing the new mid pipe and then screwing back in the O2 sensors?

Was it because it is hard to get a wrench to them while still connected to the mid pipe?

Just as bboren described, I found it easier to transfer the O2 sensors off the car rather than attempt to strugle a wrench up there (and also wanted to avoid any excessivewire twisting). Not to mention, applying the anti-sieze.


ORIGINAL: Stoenr

I thought you did this along time ago Bill? Just now a how to? I swear I read this before?

Hey Stoenr, yup, you read this a while back (in TMS). I'm rewritting a few of my How-To's here in MF for all to enjoy![sm=smiley20.gif]


ORIGINAL: jettaflavor

Dang - good job. Cops say anything about the noise?

Well, I rolled up on a couple Sheriff's (nervous as heck!), but I layed off the gas and just cruised by them. If I was on the 'Go Pedal', I'm sure they'll have plenty tosay!! [sm=smiley36.gif]

bboren
04-17-2007, 09:46 PM
Well, I rolled up on a couple Sheriff's (nervous as heck!), but I layed off the gas and just cruised by them. If I was on the 'Go Pedal', I'm sure they'll have plenty tosay!! [sm=smiley36.gif]


haha, ive gone by plenty of cops and had them right behind me. not one has pulled me over yet. as long as im going the speed limit i just let off, or if im at a stop just dont gas it too much.

Jackies Stang
04-29-2007, 10:17 PM
How long did this project take, including battery removal and replacement? Also did you change the over axel pipe or leave the stock over pipes in place?

TorchRed04GT
04-30-2007, 01:09 AM
Do the 05-07's need MIL eliminators like the 99-04's do?

sw07gt
04-30-2007, 01:17 AM
Nice write up.

TacoBill
04-30-2007, 01:53 AM
ORIGINAL: Jackies Stang

How long did this project take, including battery removal and replacement? Also did you change the over axel pipe or leave the stock over pipes in place?


Well after doing a couple, I can swap it out in an hour. First timers can expect a couple hour job.

I still have the stock mid pipes. Besides that little pinch right over the axle, the stock set up isn't too bad.



ORIGINAL: TorchRed04GT

Do the 05-07's need MIL eliminators like the 99-04's do?

Only if you're not running a custom tune.

Without either the eliminators or tune, the MIL's will come on anywhere from 50 miles to several hundred miles (that I've been told).

blaven
04-30-2007, 10:06 PM
Also if anyone is interested in purchasing the H-pipe they are on back order for a few weeks according to Brenspeed today when i placed my order :(

TacoBill
05-01-2007, 12:51 AM
ORIGINAL: blaven

Also if anyone is interested in purchasing the H-pipe they are on back order for a few weeks according to Brenspeed today when i placed my ordered :(

I see that you're currently running the LM's and waiting for the Stingers. Good call from what I've read everywhere.

The O/R-H with the Stingers are 'crazy loud'... but, with the L/M's, they're INSANELY loud! :D

blaven
05-01-2007, 05:59 PM
Yeah i was watching your Easter vid and thats what sold me on the stingers to go along with the H :D

Daniel60
05-01-2007, 07:35 PM
Excellent Job and ****ing nasty dude but you need 4:10 gears to launch faster.

TacoBill
05-01-2007, 09:13 PM
ORIGINAL: Daniel60

Excellent Job and ****ing nasty dude but you need 4:10 gears to launch faster.

FRPP 4.10's are going in next Monday! :D

edified
05-02-2007, 12:30 PM
TacoBill, what axle backs are you using? I like the sound.

local://upfiles/37295/D52A1FFD6AB14227A62C34DDF319AE36.jpg

edified
05-02-2007, 12:31 PM
Never mind TacoBill, I didn't see the header. FRPP Borla rules!!!

0NF1R
08-31-2007, 08:00 AM
well id love to get this as well but i dont have the tools to install it myself.....have all of your guys installed them yourselves or did you pay someone (how much did it cost if u had them put on)?

Tims07GT
08-31-2007, 08:02 AM
If you have someone put them on you are looking at an hour of labor. Depending on where you go $65 to $90 an hour.

tritonpwrd
08-31-2007, 08:30 AM
there are no special tools...i do the swap myself in 45 minutes. It gets too loud for everyday driving so I swap them back and forth when I feel like hearing it.

All you really need is a 15mm wrench for the manifold nuts and a basic socket set.

TacoBill
08-31-2007, 08:45 AM
ORIGINAL: 0NF1R

well id love to get this as well but i dont have the tools to install it myself.....have all of your guys installed them yourselves or did you pay someone (how much did it cost if u had them put on)?

Most allshops won't install any O/R pipes. If it involves dropping the cats, they won't touch it.

DarkFireGT
08-31-2007, 10:52 AM
ORIGINAL: 0NF1R

well id love to get this as well but i dont have the tools to install it myself.....have all of your guys installed them yourselves or did you pay someone (how much did it cost if u had them put on)?


All you need is a socket set, a couple of extensions, and a universal joint (swivel). That, a little patience, and some PB Blaster (or similar) is all you need. I didn't even jack the rear end up to put my on last weekend.

0NF1R
08-31-2007, 02:48 PM
alright thanks.....

one last thing, what is the diameter difference with the pypes o/r and the stock mid pipe?

howarmat
08-31-2007, 03:07 PM
none....its direct bolt on

0NF1R
08-31-2007, 08:18 PM
so the deeper sound is result of only dropping the cats?

0NF1R
09-05-2007, 08:21 AM
so yes its from dropping the cats........

Well i ordered mine from Brenspeed and they will be here on Friday....my access to tools is very limited but ill try to install itmyself........hopefully i can change it out without having to jack it up since i dont own one but we'll see..........

DarkFireGT
09-05-2007, 10:49 AM
You'll need to jack up at least the front end. Go buy a set of jack stands and use the crappy jack that comes with your car. May take a while to jack it up, but if you don't want to buy a jack, that'll work.

0NF1R
09-05-2007, 11:13 AM
hmmm.....i see....ill give a friend of mine a call and try to borrow his and when he comes into work tomorrow i can get it from him at shift change.....so i should be able to install it with just jacking the front of and the use of some basic tools right? lol

sry for all the questioning, but im supposed to be saving some money, which I am, but i shimmied the few bucks away and dont want the gf to find out, at least until its too late...

Bmr4life
10-19-2007, 08:26 PM
Are there any performance gains from this mod? Or is it done mainly for sound?

Also, anyone have this setup with SLP LM's?

Ortoch
10-19-2007, 08:48 PM
how long does the extension need to be? I have all the tools but my extension is only about 8 inches

TacoBill
10-19-2007, 11:55 PM
ORIGINAL: Bmr4life

Are there any performance gains from this mod? Or is it done mainly for sound?

Also, anyone have this setup with SLP LM's?

Good for around 10 rwhp.

O/R-H with SLP LM's are crazy loud. I think there's a soundclip on Brenspeed's website.



ORIGINAL: Ortoch

how long does the extension need to be? I have all the tools but my extension is only about 8 inches

That should work. It just makes it easier to access those manifold nuts.

lldsandsll
10-20-2007, 03:48 AM
i got these 'pypes' mated up toMBRP loudmouth. i say DO IT! its a good loud, people will love you for it, lol. no seriously, you will get noticed. i hear people mumble "...mustang..." when i drive by, and occasionally i'll get a "your car sounds aggressive, i love it" or "do a burn out." this week i got multiple warnings on a trip to orlando,but only cuz i got on it right in frontof a cop=) secretly, he must have liked it because he said to me "gotta make noise in front of all the girls huh?"

i feel a difference in power, but maybe it's just all the noise adding to the effect. i think the 10 rwhp might increase slightly with other mods as well. i think that number was determined off a stock gt.

anyone's setup rattle after install? i tightened everything down to make sure, but i still got some rattle at high speeds. the rattle seems to have pretty much gone away, unless i hit a small bump at high speed, then i hear it again.

dont forget to tune, or get MIL eliminators!

rshamekh
10-20-2007, 08:46 PM
I just installed the o/r h-pipe today and it sounds AWESOME!! I love it!!

But ....

I have a rattling noise when I step on it!! What could be the problem? Where should I look first?
or is it just a normal noise that I'll have to live with?

And .. How did you adjust the Stingers to be aligned perfectly? Mine is sitting a bit low.

thisisthelastname
10-20-2007, 10:14 PM
I've played around a bit with my exhaust. Borla's then straight pipes. Stock cats a off-road X pipe. If you want a great sound.....stock cats with straight pipes. Simple and Cheap. as far as rattle goes, check the clearance between the pan-hard bar and the exhaust. It's a tight fit around the rear axle. Other than that you could check the exhaust hangers for clearance between hook and rubber/brackect. Sweet]

rshamekh
10-21-2007, 02:55 AM
Thanks for the advice man!! I'll check them tomorrow.

TacoBill
10-22-2007, 06:58 PM
ORIGINAL: rshamekh
And .. How did you adjust the Stingers to be aligned perfectly? Mine is sitting a bit low.

Loosen the mid-pipe clamps and over axle clamps. Have a helper align your tip within the bumper cut-outs (in, out, centering.. it's all adjustable), then tighten the over-axle clamp, then the mid-pipe clamp last.

jdavid897
11-05-2007, 01:14 PM
Did you have to do a tune with the new h pipe so it does not set off sensors? And if so, how is it done?

jdavid897
11-05-2007, 01:15 PM
Do you have to add a new tune so it does not set off the sensors? And if so, how is it done? I new at this. thanks tacobill.

DeStonn
11-05-2007, 01:34 PM
If you already have a tune from brenspeed or most other places for that matter, your O2 sensors will be turned off already. if you don't have a tune I suggest you get a CAI/Tune first then worry about mid pipes. JMO

TacoBill
11-05-2007, 01:47 PM
ORIGINAL: DeStonn

If you already have a tune from brenspeed or most other places for that matter, your O2 sensors will be turned off already. if you don't have a tune I suggest you get a CAI/Tune first then worry about mid pipes. JMO

+1

Another option is to get a set of MIL Eliminators.
http://www.brenspeed.com/mustang_2005/midpipes.html

S19706
01-16-2008, 07:32 AM
I got a guy in Boynton Beach that owns a exhaust shop that make custom h-pipes for any car. He only charged me $80.00 to make one for my 06

2007CalSpec
04-29-2008, 08:36 PM
Anyone knowwhat size socket I need to remove the down-pipe to exhaust manifold? I know it's gonna have to be a deep socket but what size? I'm using Taco Bill's write up to plan my O/R Prochamber install. I wanna have everythingon hand before getting under the car and not have to run to the auto parts store to get the right socket size. Thanks!

Raven27
04-29-2008, 09:24 PM
ORIGINAL: 2007CalSpec

Anyone knowwhat size socket I need to remove the down-pipe to exhaust manifold? I know it's gonna have to be a deep socket but what size? I'm using Taco Bill's write up to plan my O/R Prochamber install. I wanna have everythingon hand before getting under the car and not have to run to the auto parts store to get the right socket size. Thanks!


I believe 15mm or 16mm but I cannot remember. Someone else might know for sure.

harraid5711
04-29-2008, 10:37 PM
15mm for sure. also, don't forget a swivel and a few socket extensions....

2007CalSpec
04-29-2008, 10:47 PM
Thanks for the replies on the socket size you guys! One more thing...Will I neednew gaskets for the exhaust manifold to down-pipe or does it not have gaskets?

harraid5711
04-29-2008, 10:50 PM
no gaskets! you're good to go. one more thing....do make sure you use anti seize on the manifold studs so it'll make future switches easier. getting them to break loose can be a b****! pm if you have any trouble....

2007CalSpec
04-29-2008, 10:54 PM
ORIGINAL: harraid5711

no gaskets! you're good to go. one more thing....do make sure you use anti seize on the manifold studs so it'll make future switches easier. getting them to break loose can be a b****! pm if you have any trouble....


Thanks! I think I'm ready to tackle the job this Saturday now. I'll post videos/sound clips when done. [sm=smiley20.gif]

harraid5711
04-29-2008, 10:58 PM
it's gonna be loud!!!! i almost pissed myself when i first cranked it up.....i was like "what did this thing do to my boomtubes"!!!!

pqtiii
05-06-2008, 10:42 AM
DO you get that kind of partically raw gas/exhuast smeel with the h-pipe?

Thanks
pt

harraid5711
05-06-2008, 05:51 PM
yes, but it's not as bad as i thought it'd be, i don't even notice it now, and it's only when my car's still in the garage