Seems to be a bad tune. I tried flashing back to the tune I had before the gears and now I am running back around 13.5 . Did a few back to back runs and each time the old tune ran better. I did go into my tuner when flashing the car and selected 3.73 ratio.
I am at the track now so far best 13.465.
those are great times with only an intake/tune and gears.
Just out of curiosity,how much faster does it feel with the new gears and proper tune now??
Well I don't really think it's that great because I ran a 13.453 @ 103.89 before the gears :P . The tune actually still is not the proper tune... waiting on Doug to send me a revised one. I am just running the tune I had before I installed the gears, but went in with my Xcal2 and manually changed the gear ratio.
It doesn't really feel much different right now unfortunately ;( , maybe when I get the new tune I will notice.
I also found out from a friend who had my car up on a lift that apparently I have an aftermarket H-Pipe I didn't even know about O.o . Must have been there when I bought the car... hopefully they didn't have 4.10s on there too! lol that would explain everything... Unfortunately don't know how to figure out what H-Pipe it is, and my friend could not tell.
< Message edited by gburke1 -- 5/4/2008 8:31:10 AM >
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13.453 @ 103.89 MPH '06 Legend Lime GT Auto (91 B@ma Race Tune, JLT Intake) New: Installed 3.73 gears.. track times to come!
thats what i was thinking, maybe you had 4.10's in before and dident notice?
idk.
good luck
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1989 5.0 LX convertible rebuilt engine, rebuilt AOD tran's. 4.10's lots of chrome, and lots of go-fast addon's *4/26/08 212hp 261trq with car shifting on dyno at 4300rpm*
Do you remember what rpm ur at and what gear in ur in before and after the install at the track. If ur rpm has dropped after the install, that would make me believe you did have the 4.10s but if your trapping at a higher rpm then before; ur gold.
being that stock auto have like 3:31 gears, a set of 3.73 should help a lot!
O and btw a stock geared gt should be in third gear before going through the trap, at least my stock gt w/ 3.55 gears is. I'm also looking into 4.10s or 3.73s.
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2006 5spd Mustang GT- Black with red int upgrade; skr500. Stock for now! Best 1/4 Mile-13.32@104.5mph 60ft-1.997*Bone Stock w/street tires*
if they were 4.10s that might explain why it 'feels' faster with the 3.73s. (with better traction off the line)
If you were just spinning the wheels at launch(4.10s) it might explain the quick times and higher trap speed.
I know it's apples to oranges but with my old srt-4 stage 2 if I launched it conservatively I would get a better time though a low trap speed..but if I fried the tires off the line I would trap 1-2 mph higher though my trap was a little slower.
The other day I had some 3.73 Gears installed in my car. I drove it for 2 or 3 days & now today I took it out to the track. I ran several times... the best I could get was a 13.7 and most runs were in the 13.9 or 14.0 range... I am certain I was running these 13.9 or 14.0 range when I was stock... and the car seems to FEEL faster than before the 3.73s
I have an Intake, 3.73 Gears, and of course a Tune. Before the gears were in I ran a best of a 13.453 which I lost the time slip for... so I will show a different comparison of some runs before and after.
I have come up with a few possibilities of what might have gone wrong... 1) Track timing/clocking equipment was messed up or really bad track conditions (a couple people were saying they were running slower... others said they didn't notice anything... I saw a couple cars that should have ran faster... gto ran 14.4 and 350z ran a 14). This may be most likely as last time I went it was reporting a trap speed that couldn't have been right... like 80 mph 2) Wrong tune was installed by shop. If so I re-installed it when I got home. (lesson learned to bring tuner to track...) 3) Doug gave me a bad tune? 4) Something not right with gear install
Opinions?
Make sure the shop switched the gear ratio on the car's computer otherwise the speedometer says your going faster than you are, and if so you may be shifting when not in true powerband and slowing down?? Just a thought if no one has already said that?
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99 Cobra-(#2662 of 4040) Engine being rebuilt now Day 90
my 01 had 3.73 and I wish I never made that mod. I ran the same. You gotta scream it thru the traps, that's what I found and the best I ever did was 14.01 in that car with a Hypertech and a cai. It averaged 14.2
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2006 GT , vista blue, K&N filter only, SCT tuner, pine scented air freshener, those chrome door lock plungers, chrome valve caps 13.51 @ 102.75
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RE: 3.73 Gears installed... car running slower in 1/4 - 
