Stalling a 6.7 truck..Please read

[realspeeded]

I have a 2012 f250 with a Bully Dog GT programmer on it. Looking to get a Spartan or H&S really soon. Here is my question. Previously i have had the 6.0 trucks and we could put them in 4 high and stall them up to build boost and it would take off like something crazy. On the 6.7 trucks the ecm cuts the engine down and want allow you to stall it up. Is there anything to bypass this??

Reason im asking is because an employee of mine has a tuned a 6.0 and we played around a little friday evening. We could stop and obviously he can stall his up and leave hard but mine you cant. We took off and he pulled out maybe a car length and once we got out there i ran him down like he had the brakes on. If the 6.7 trucks could be stalled up like the 6.0's they would be awesome.

Any insight on this would be appreciated.

[travisH3]

Hmm, I haven't tried this with our 6.7 but all your doing is building boost so there is no turbo lag when taking off. Maybe when you go to the h&s or spartan it will Let you power brake it. Watching videos of 6.7s tuned on youtube it seem they don't have issues building boost to do a 4x4 launch.

[mysticblu999]

I can do ot with h&s. I could do it stock also.

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[realspeeded]

How when its stock?? When you hold the brake and push the gas it cuts my engine down to 1500 RPM's. Let me know thanks

[mysticblu999]

Are you turning the traction control off??

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[realspeeded]

I have tried it each way....with traction controll off and on. My 2005 & 2006 6.0 would stall up and build like 20-25 pounds of boost and slide ya foot off the brake and leave like holy hell. My 2011 and 2012 will not stall up at all. Its like the ecm cuts the motor down when the brake and fuel is smashed at the same time. Thanks

[TheBoss]

Mine will come up easily. With these trucks you shouldn't need more than 10psi to launch like a bat out of hell. You realize that this is incredibly hard on the transmission right?

[Bryce18]

It the torque management system kicking in. Try easing into the throttle for your boosted launch. Usually it takes a couple tries to get it to unleash the power. Soon as your turbo starts spooling up and your rpms are 1500-1600, let er go!

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[mysticblu999]

Sounds like torque truncation. Bully dog probably doesn't turn it off. Why do you need to leave the line at 25 psi? You are just asking to break stuff. 10 psi is plenty.

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[realspeeded]

I may have been eggagerating on the 25psi part. I just know that i could hold the brake and put the gas to the floor with my 6.0 liter truck and it would leave hard, the new 6.7 trucks want do it or at least mine want.