You won't have to do a vacuum mod. MAF is not directly linked to Trans in any way on our trucks. On older tunes a lack of a MAF would send trans to full line pressure, but you can tune around that also.

 

I just noticed that 2002 back tunes have the trans diag/MAF dtc table but 2003+ doesn't. So....it doesn't matter? Trucks don't increase pressure on the failure? I remember when I first started tuning everybody bitched about it, but I never experienced it...it being line pressure increase.

 

Why would you have to go vacuum mod...you are changing the operating system by going 2 bar...in essence rescaling the 5v signal so the VCM knows how much vacuum/boost you have. Why wouldn't the trans shift right? Just wondering I haven't ever heard of this either

Dave

 

I just talked to him, he was confusing some information..call it cross confusion. LOL

BTW bowtie, I think I just downloaded your tune off of HPT...yep Dave 8psi radix. How recent is that tune?

 

I'm in the same boat, Head a lot about it, but never experienced first hand....

 

That tune wasn't right...I tried to get them to take it down. I have a much better one down. That one had some flaws including the PE enable. I no longer have that engine or cam. I have figured out lots since then, I also have another mod (fans). If you want a copy of my latest one let me know

Dave

 

PM'ed ya Dave! Thanks!

 

thank you, it makes sense now. thats what i was worried about. i "heard" that 2bar would cause tranny to go full line pressure and thought only way around that was to go vac mod. thanks for setting me straight.

 

dewey, you are da man! thanks for your tuning advise.

i love you man! lol