Mikeysy15
Donating Member
Just wanted to point out that I installed the RPM manifold and plenum and it really woke up the engine past 4500 rpm . It shifted the powerband of the truck another 1000 -1500 to the right . This was with a PTE 6262 at 23psi on e85. But beware gentlemen. I was ok on fuel before the manifold swap and now I’m lean as the scanmaster was in the 750-850 range while I’m the dyno . Afr was 11.5 -12.2 . This is with 80lb injectors , e85, bigger fuel lines and fuel rail and the TT CHIP was turned with 8 clicks on max fuel and scanmaster was still showing lean . This manifold is really flowing a good amount of air over stock so I might go back to race fuel only for track days . Dyno was done on 2wd.
