Joel0201 Member 26 Member For: 5y 1m 10d Posted 06/02/20 07:29 AM Share Posted 06/02/20 07:29 AM (edited) Hey guys I have a bf turbo which has been modded and has a quite old tune. mods include cooler/injectors/pump/surge tank/3.5inch exhaust. I was told the engine could be built for big power rods ect but not sure now, my car is currently throwing up the code p0236 and p0237 could this be in the tune or should I replace the boost sensor (is the a way to measure the boost sensor?) could this be a map related issue?? also The car seams to run fine boost to 14psi no dramas however when I am sitting at lights or the car is left on idle it seams to hunt like rmp jumps up and down slightly thank you guys Edited 06/02/20 07:32 AM by Joel0201 Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,304 Member For: 16y 16d Gender: Male Location: Melbourne Posted 06/02/20 08:13 AM Share Posted 06/02/20 08:13 AM well, when P0236 and P0237 are there, the BPS is likely faulting... it should be at 0.3 volts on it's signal at 10kPa and up to 3.7 volts at 200kPa (1.8 to 2.2 volts at atmospheric pressure). depends when the build of your car is if it has a better motor straight out f the factory... after June 2006 is the point where they changed over. if it's running 14psi fine then the T-MAP sensor is probably compensating for the BPS and the tune is allowing it to run fine... but the hunting idle could be a dirty throttle or throttle related ducting (or if that's all fine then the tune doesn't have a great idle characteristic). Link to comment Share on other sites More sharing options...
Joel0201 Member 26 Member For: 5y 1m 10d Posted 06/02/20 08:28 AM Author Share Posted 06/02/20 08:28 AM Awesome I’ll grab the meter out and check the wiring. ill also check all of the throttle body and give it a clean too might as well. I did just get a text from the original owner the car had a high flowed turbo on it but they put a standard one back on it. Could that also be adding to the mix? Note on boost at 14 it feels pretty solid Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,304 Member For: 16y 16d Gender: Male Location: Melbourne Posted 06/02/20 08:46 AM Share Posted 06/02/20 08:46 AM if it didn't get put back to a tune relating to the "stock" turbo then it could be causing issues... but those sort of issues would more happen in the other way, e.g. on boost it would struggle but would be fine at idle. Link to comment Share on other sites More sharing options...
Joel0201 Member 26 Member For: 5y 1m 10d Posted 06/02/20 08:49 AM Author Share Posted 06/02/20 08:49 AM Ok that makes sense to me. I think I’m gonna give it a good going over then pay the money for a tuner to work there magic Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,304 Member For: 16y 16d Gender: Male Location: Melbourne Posted 06/02/20 08:51 AM Share Posted 06/02/20 08:51 AM no worries, good luck Link to comment Share on other sites More sharing options...
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