Hey everyone. Had some quick questions. Just recently I turned up the boost in my 1jz-gte swap. When I first started turning up the boost everything was perfect. Then a week or two later I started getting some sort of cut, only in higher gears when im on the throttle for longer periods of time (most common 4th gear WOT)I get a quick cut like a limiter. Only thing is 1st, 2nd, and 3rd gear are no problem, never cuts
So my question is, Am I hitting a fuel, ignition cut? Or is it the injectors/pump being too small? Maybe bad coil packs?
Car specs:
1jz-gte swap
Holset hx35 single turbo
stock injectors
stock ecu
stock fuel pump
Shell V-Power 91 OCT.
driftmotion wastegate (7psi spring) bumped up to 12-13psi
AFR's around 10~11 WOT
My thoughts are:
If it was coil packs id be breaking up in all gears at WOT?
If it was fuel (injectors, pump) id be leaning out?
And I know people running 1jz's over 18psi on v power so i don't think its the fuel im using?
My last idea is that maybe my boost is creeping above the 14psi limit? (But why is it happening more often all the sudden?) :1zhelp:
Anyone have any other ideas?
Oh and just for shits, what is it exactly when the stock ecu see's over 14.7psi of boost and cuts_______?
Thanks!
Sorry for the onslaught of questions
So my question is, Am I hitting a fuel, ignition cut? Or is it the injectors/pump being too small? Maybe bad coil packs?
Car specs:
1jz-gte swap
Holset hx35 single turbo
stock injectors
stock ecu
stock fuel pump
Shell V-Power 91 OCT.
driftmotion wastegate (7psi spring) bumped up to 12-13psi
AFR's around 10~11 WOT
My thoughts are:
If it was coil packs id be breaking up in all gears at WOT?
If it was fuel (injectors, pump) id be leaning out?
And I know people running 1jz's over 18psi on v power so i don't think its the fuel im using?
My last idea is that maybe my boost is creeping above the 14psi limit? (But why is it happening more often all the sudden?) :1zhelp:
Anyone have any other ideas?
Oh and just for shits, what is it exactly when the stock ecu see's over 14.7psi of boost and cuts_______?
Thanks!
Sorry for the onslaught of questions