crispyimmy
Probationary Member
- 26
- 11
- Feb 24, 2021
-
Toronto,
ON_Canada
I'm not sure exactly whats happening now but after some street tuning I'm having a weird stutter / misfire under WOT pulls at high RPM. It typically will cause a backfire and cause my RPM to stall/stagnate, usually a good puff of smoke out the exhaust.
Sharing the log to see if there's anything obvious here. The only thing I know of is maybe the low voltage (maybe alternator voltage regulator is going out ), but i don't know if that would cause this?
In this log I do a ~33% throttle position pull hitting 20psi boost and didn't have the issue but the 100% throttle pull had the issue after that.
I checked the plugs, tried br7es and br8es, gapped around 0.022. coils aren't super old but I haven't swapped them out yet. They work most of the time though, not sure if it could be blow out?
Running Ethanol. I do notice a drop from 75% to 70% during the pulls.
Anything i could be looking at?
FP Green turbo/manifold
4" FP intake
3.5" ETS intercooler & piping
Evo intake manifold
Fuelab AFPR
Tial 44mm wastegate
Walbro 450 e85 fuel pump re-wired
FIC 2150cc injectors high Z
Magnus fuel rail
Engine 7 bolt - 2.3L stroker
Mahle 9:1 coated pistons
Crower rods
Eagle crankshaft
Fluidamper
Evo beehive springs/retainers
GSC S2 cams
TIA
Sharing the log to see if there's anything obvious here. The only thing I know of is maybe the low voltage (maybe alternator voltage regulator is going out ), but i don't know if that would cause this?
In this log I do a ~33% throttle position pull hitting 20psi boost and didn't have the issue but the 100% throttle pull had the issue after that.
I checked the plugs, tried br7es and br8es, gapped around 0.022. coils aren't super old but I haven't swapped them out yet. They work most of the time though, not sure if it could be blow out?
Running Ethanol. I do notice a drop from 75% to 70% during the pulls.
Anything i could be looking at?
FP Green turbo/manifold
4" FP intake
3.5" ETS intercooler & piping
Evo intake manifold
Fuelab AFPR
Tial 44mm wastegate
Walbro 450 e85 fuel pump re-wired
FIC 2150cc injectors high Z
Magnus fuel rail
Engine 7 bolt - 2.3L stroker
Mahle 9:1 coated pistons
Crower rods
Eagle crankshaft
Fluidamper
Evo beehive springs/retainers
GSC S2 cams
TIA