Looking for some insight into why I keep getting a pair of p1145 and p1155 codes-and corresponding CEL, re-occurs every few hours on my '03 GT2, have attached freeze frame data via a generic OBD2 I use(yes I know I need a better diagnostic tool lol). Occurs only under light load/throttle. Always has a MAP reading of 255kpa????
Car has an EVOMS stage 3 package on it currently, last GIAC update done in 2007, runs between 1.1-1.3bar(127mph trap) runs stock fuel pressure and I believe stock injectors(yikes!)...I think the tune/lack of fuel system upgrade is responsible....
I have given the car in the last ~2000miles/few months:
-both new primary Bosch o2 sensors
-new Bosch plugs and Beru coils
-New Bosch MAF
-New Mahle fuel filter
Appreciate any insight, this one has me confused
Thanks!

 

I would do a pressure test to 20 psi...

 

thanks for the suggestion, I imagine testing whole system from MAF pipe would be advised?
Has anyone seen a MAP sensor failure? Seems odd the freeze frame data is always saying the same '255kpa'....might purchase one as they're really cheap anyway

 

Markski, thanks for the advice, made up a pressure tester today and found a major leak coming out of the passenger-side wastegate rod seal, should have known better to pressure test the system...guess it's time to look at wastegate upgrades..

 

you live and learn.... good find...