rb25det Neo MAF cut issues...
Posted: Wed Mar 05, 2014 12:37 pm
Holset HY35 Turbo
Turbonetics External Wategate
R35 570cc Inectors
JGY Fuel Rail
Venom FPR
Godspeed Intake Manifold (properly installed and looked over)
CXRacing Thick Topmount Exhaust Manifold
Nistune (obviously)
N62 MAF
LS2 Coilpacks (tuner set dwell/associated settings for these)
On the dyno I had a hole in my intercooler causing a MASSIVE boost leak but it still made 18psi and had no cut til redline. Now that I fixed the intercooler and many other leaks I have this rumored Nissan cut.
I have tried 2 MAFs and sorted out my boost leaks (will still re-boost leak test and try another MAF)
I even relocated my maf to be further away from the turbo to avoids bad readings aswell.
but I consistently have the car cut and run lean around 4500-5k
MAF voltage reads up to 4.3v and bam it cuts
Clamping the voltage with a resistor seems sketchy but I know I can tune to ensure it doesn't run lean.
any help would be appreciated thanks
Tim
Turbonetics External Wategate
R35 570cc Inectors
JGY Fuel Rail
Venom FPR
Godspeed Intake Manifold (properly installed and looked over)
CXRacing Thick Topmount Exhaust Manifold
Nistune (obviously)
N62 MAF
LS2 Coilpacks (tuner set dwell/associated settings for these)
On the dyno I had a hole in my intercooler causing a MASSIVE boost leak but it still made 18psi and had no cut til redline. Now that I fixed the intercooler and many other leaks I have this rumored Nissan cut.
I have tried 2 MAFs and sorted out my boost leaks (will still re-boost leak test and try another MAF)
I even relocated my maf to be further away from the turbo to avoids bad readings aswell.
but I consistently have the car cut and run lean around 4500-5k
MAF voltage reads up to 4.3v and bam it cuts
Clamping the voltage with a resistor seems sketchy but I know I can tune to ensure it doesn't run lean.
any help would be appreciated thanks
Tim