Which is the better "tune" to get. JDM says that if I get Brenspeeds tune I will eventually call them for a new tune due to Brenspeed not having much on their bottom end with the Saleen SC'ers. I've heard good things about both companies but is their a real difference in their tunes? I want the Brenspeed Stage 3 Saleen upgrade kit but with a GT500 fuel pump. I'd like to get 450-470 rwhp. I know Brenspeed's tunes arent tuned for that much rwhp but JDM said that 470rwhp is fine with their Stage 2 kit. Fastlane Motorsports, where installation will be done, said 470rwhp with their dyno tune is fine. So, which is the better option...JDM, Brenspeed, or custon dyno tune?
Oh is the KBBAP o.k. at 450-470rwhp or should I just get a GT500 fuel pump?
however... you could get the Brenspeed and JDM tunes via email for what $75-100 each. why not just try all three? if ur gonna drop all the cash for the S/C get the others to compare
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Tngstn 06GT-5 spd -Vortech HO S/C-Tuned by Realspeed Auto You can never have too much power, just not enough traction. 12.33 @ 112.3 - 1.71 60"
And if you call Brenspeed they'll tell you "If you get the JDM tune you'll just be calling us in a few months because X"... All of them are trying to sell something, that's why they are in business.
With that said, I have a DYNO tune from Brenspeed, and I'm happy with it. They did it when I drove out there for my installation.
Bottom end? My dyno sheet says I make about 375 ft/lbs @ 2500.. I think that's pretty decent.
Which would you rather wear.. a shirt that is custom tailored to your body so that it will fit perfectly and move with you in perfect harmony.. or just some shirt off the rack that fits ok?
I know I keep saying this to the point I may just add it to my sig... Mail order tunes are a best guess... Dyno tunes done are done to exactly what the data says your car likes.
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"Vera" '07 GT. Manual, 3.55's, Spohn Adj LCA's, Hurst Shifter, GT 500 Rear and chin spoilers, GTA's, Steeda UDP, Roush rear springs, ProFab CAI #6, BBK Shorties
"Dyno's Rarely Lie, but E.T.'s and Trap speed say so much more."
Posts: 2853
Joined: 4/26/2005 From: Babylon, NY Status: offline
Here's the deal, with N/A cars the mail order Brenspeed tune is perfect and you may only get another 2 hp from a dyno tune. I have personally seen and heard this over and over.
Now Saleen S/C cars are a whole 'nother story. If you live near a reputable dyno tuner with alot of experience tuning Saleens, definitely go with the Dyno tune. The setup you're looking at is not a standard "package" setup that Brenspeed supplies since you're adding the GT500 pumps. This makes the fuel delivery and output just slightly different enough to not be a perfect tune they will email you.
Secondly, if you had to get an Email tune and are looking at both companies to do this, you'd better start with Brenspeed, here's why. Brenspeed uses a Steeda intake, a stock MAF sensor, and occasionally a SCT MAFia. JDM can write a tune for this ($180) that should work well too. IF you buy the package from JDM, they use a Lightning MAF. Brenspeed cannot write a tune for this as of yet, as they have no experience using this MAF (I called and inquired). JDM can write a tune for either. VMP on the other hand, while they can write a tune for either as well, will send you a baseline tune you really need to data log multiple times, or do a dyno run with in order to fine tune it. So if you're the kind of guy who wants multiple tunes in his SCT and compare them then get the kit and package from Brenspeed and then request tunes from various other companies. But you'll never be truly happy until you put them on a dyno to be assured they're spot on. This is why exx1976 and others who had a custom dyno tune are so satisfied, they know his tune is perfectly safe.
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05 GT Vert Auto, Saleen S/C 10psi VMP tune, Roush springs,D-Specs,Steeda LCAs,Swaybar,Panhard bar & brace,Spydershaft,TruTrac,3.73,BBK shortys,Corsa A/B.
Thanks to all that provoded feedback. I thought a custom dyno tune would be best but I see so many guys with Saleen SC'ers running canned tunes from either Brenspeed or JDM.
Another question... Which is the better upgrade kit: JDM's Stage 2 for $1545 or Brenspeeds Stage 3 for $1486? With either one I plan on getting a GT500 fuel pump just to be safe. I've never heard one bad thing with the Kenne Bell BAP's but wouldnt it be better to just get the GT500 fuel pump?
and for everyone, thier all about getting thier money, both shops are good because i have delt with both, and both are greedy as can be, and in the end only a custon will be perfect
The one thing I've not seen on this forum is Brenspeed ever saying anything negative towards another tuner or vendor. I think that's why I've always felt I was dealing with a place that had some class. I know there are probably people in the Missouri area I could deal with but I always go with Brent on major purchases and assemblys of major components. It's a long haul for me but it is always worth it.
but I see so many guys with Saleen SC'ers running canned tunes from either Brenspeed or JDM.
How do you know they're 'canned'?
I don't KNOW that everyone is running a canned Brenspeed tune on their Saleen SC'er setups but I would guess that most folks that don't live close to Brenspeeds shop get their XCal ordered with a canned tune. Maybe I'm way off and everyones running dyno tunes and thats what I'd like to know. Which is the better way to go? So far it seems that a custom dyno tune is the better choice.
When I went to Brenspeed for my install, the Dyno tuning was included in the install price (IF you go there and have them install it). Took Brent three pulls before he was satisfied with the numbers, and the changes made weren't big changes. The base tune he wrote and loaded (that he would have mailed to me) would have been good, he was only able to squeeze 5 HP more out of it, it was that close to perfect. For the record, the blower is the only mod I have, so there wasn't a lot of other guesswork involved.
Now, as for which upgrade kit to buy - if you don't yet have the blower, you don't need to get the blower THEN the upgrade kit. Look on Brenspeed's site, they sell the stage two including the blower all as one kit. It's cheaper to do it this way, as you can see by comparing the #'s on the site.
For the record, most people, including Brenspeed, will tell you that a 3.4" (Brent's stage 3) is about as far as they'd comfortably go on a stock bottom end. Me? The stage 2 is plenty for me on a stock bottom-end (3.6"). Anything more and I'd start to be worried, and likely wouldn't beat it as often, just out of fear. At this power level (I could be wrong), I really don't think you're going to notice an extra 20-30 HP anywhere but on a timeslip anyway..
And yes, I never did hear ANYONE from Brenspeed say "If you go with JDM...". I was simply exaggerating, in so much that all businesses are out to make money. While Brent most likely would never say that (I've certainly never heard him, Dave, or Seth say anything like that), it was simply the point I was making. Every vendor out there, regardless the product, will always want to tell you why their product is better than the competition's product. It's good marketing, it's good business. You're best to get an independent opinion, one from someone who has no monetary interest in the product you choose. Also for the record, I've only ever used Brent's tunes, so I can't make an accurate comparison. All I can tell you is that I'm perfectly happy with what I have from Brent, and I'd reccommend them to anyone without hesitation.
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JDM vs Brenspeed vs Dyno tune. - 
