Big torque boost from Cam and Ported Intake Manifold

Here's the dyno sheet which shows the curves after the tune. Different dyno this time. It was Mustang Dyno set to run in DynoJet mode. All runs were in 3rd gear.

369 rwhp, 383 rwtq SAE corrected.

James from Frank Racing did an outstanding job of tuning. I will post new track times tomorrow.

 

Just curious as to why the pull was in 3rd ? 4th is 1:1 correct ?

 

On a Mustang dyno, it simulates an actual 4th gear pull (with wind resistance and everything). The pulls took too long and the motor would get overheated. It was much happier doing 3rd gear pulls on the MD. They took about as long as a 4h gear pull on a Dynojet.

 

K, Ive used a MD and know what you mean about it taking longer, didnt know the other stuff. Hows it know if a C6 or Brick(Jeep) is strapped down for wind resistance ? Thats a totally new one to me:stars: I do know we made 1580RWHP on a MD and 1730 on a DynoJet.

 

The cool thing about the Mustang dyno is that every vehicle has its own parameters that you enter. The Mustang dyno loads the rollers much harder on a 4800 lb Jeep than it does for a 3100 lb Corvette. The Jeep pull takes a lot longer. This is one of the reasons why the MDs are so much more useful for tuning. You get a real road simulation.

 

Patrick please do not take this as us or me coming at you more so your tuner. In all of the SRT forums I have yet to come across anyone that is tuning with a CMR do a tune in 3rd gear can you imagine if he puts you on the lean side of things in 3rd what it will do in 4th, even leaner. Are you calling all the shots at FRI and with James or are they pretty much telling you how things should be done I'm really concerned for you. 4th gear pull is typically only about 3 to 5 seconds longer than 3rd so I'm really confused here.

 

No worries Wade, James and I are on the same page from a tuning standpoint. I had input on every change he made to A/F ratio and timing. We pushed the limits to what made the best power and torque, then backed it off enough to keep it happy. All dyno runs were reverified on the street with the wide-band and the scanner.

Just to be clear, the 3rd gear pulls on the Mustang dyno took about 8 seconds. This is still a longer pull than a 4th gear pull on a Dynojet. We ran into problems with pulling 4th gear on the dyno and it's worth explaining why. Imagine putting your vehicle in autostick in 4th gear on the street and go WOT at 20 mph. By the time you hit redline in 4th gear, you'd be going around 140 mph. Think about how long that takes. That's how long a 4th gear pull takes on the Mustang dyno when it's loaded for a 4800 lb Jeep. If we had a 140 mph breeze going through the radiator, the motor would have stayed a lot cooler. For us, the 3rd gear pulls were long enough (time-wise). Again, we were looking for the gains from timing and A/F ratio. James was able to find about 10 more rwhp and 12-15 more rwtq with his CMR fine tuning.

 

Okay just looking out for ya bud dont want you in limp mode anytime soon, keep the kill videos coming they are great

 

Wade, I would expect to see big things from Patrick and his Jeep.
The amount of knowledge he has gained and shared with the LSX community is mind numbing, and he has pushed the limits of the LSx platform for years. (anyone for a 500+rwhp N/A 5.7?)
He has become one of the most respected LSx cam gurus around, and he is an accomplished GM tuner in his own right as well.
As he spends more time with this Jeep, it will benefit the entire community, for sure.

Thanks
Mike

 

Results are in. I ran a 12.491 @ 107.97 mph. 1.773 60' time. 7.963 @ 86.47 mph 1/8th mile. Very impressive for cam-only with stock exhaust.

 

Wow and Congrats. With ported heads you should be in the 11s, me thinks Franks Racing will be selling alot of bumpsticks today.

 

Was that an AWD dyno or RWD? It does not work to do a AWD run on most dynos in 4th gear....(not sure on dynojet) as it does take too long and the numbers will be a lot less as well....

So unless you are doing a RWD dyno and a Dynojet, you must dyno in 3rd gear....

 

It was a RWD Mustang Dyno, hence the reason we had to dyno in 3rd gear. Can't argue with the track results. The tune was on the money. :beerchug:

 

Looks good Patrick... what did the tune cost?

 

The tune depends on how much James needs to do. His typical rate is $150 an hour, but he cut me a sweetheart deal since he was wanting to perfect the tune for this cam combination. If you already have a Diablosport Predator, I would budget another 2-3 hours for tuning on the dyno. If you just wanted to replicate my tune, I'm sure it would be even more affordable. Contact [email protected]

 

Wonder how this tune would work for us out of towners since we cant be on the dyno.

 

That's the great thing about e-mail. James can send you the tune for the cam via e-mail. You can then log your vehicle with the Predator. If you find knock retard or feel anything else needs to be tweaked, James can look at your log file and make the necessary changes, then e-mail the updated file back.

I'm not exactly local to Frank Racing. I live 2 hours away so the e-mail tunes work great in my case.