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I have been fighting a detonation problem in my B13, which currently uses a t25 turbo, 370cc injectors, JWT ECU, and starion FMIC. AT WOT the techtom unit reads a "lean" mixture from the O2 sensor. From my experence, usually the JWT ECU program will be rich at WOT. Upon a WOT acceleration, the lean mixture usually starts at 4,000 rpm and last until redline. Most of the time, the motor will begin detonating around 5800 rpm where I immediately back off.
I have changed the following in attempts to solve the problem with no luck:
Replaced BB TMIC for a front mounted Starion IC
Installed a walbaro 255lph fuel pump
Changed FPR
Replaced o2 sensor
New temp 6 plugs
Adjusted TPS to correct voltage
Set timing at 15 degress
Reground MAF and disable EGR system completly
New fuel filter
I currently do not have a boost controller or guage on the car but have not seen the MAF voltage even come close to 5V. This same turbo kit ran flawlessly at 10PSI on my B12, so I am pretty baffled and desperate to find the cause of detonation.
Any suggestions or input would be much appreciated! Thanks
I have changed the following in attempts to solve the problem with no luck:
Replaced BB TMIC for a front mounted Starion IC
Installed a walbaro 255lph fuel pump
Changed FPR
Replaced o2 sensor
New temp 6 plugs
Adjusted TPS to correct voltage
Set timing at 15 degress
Reground MAF and disable EGR system completly
New fuel filter
I currently do not have a boost controller or guage on the car but have not seen the MAF voltage even come close to 5V. This same turbo kit ran flawlessly at 10PSI on my B12, so I am pretty baffled and desperate to find the cause of detonation.
Any suggestions or input would be much appreciated! Thanks