zero260 Posted December 9, 2016 Share Posted December 9, 2016 05 obxt 850 inj. Factory intake, aftermarket up pipe and cat back. 18g turbo. Sti intake. Tuned on rom raider. I upgraded the injectors this summer and had the car running great, fuel trims and maf scaling were all great. I let it sit for about 2 weeks till I had time to fix a small fuel leak under intake but I didn't remove the intake just had to replace a hose clamp. Now when I try to drive down the road in the morning it will barely accelerate up to speed. And I checked my fuel trims and they're at about 8% and I pulled a running rich code. I tried reflashing the latest tune into it again just to make sure that's not an issue but that hasn't helped. Ask I adjusted for the injectors was the scaling/latency and the tip in. It's there a cold start enrichment I need to adjust? Any thoughts? Link to comment Share on other sites More sharing options...
gimpydingo Posted December 9, 2016 Share Posted December 9, 2016 TVG deletes? Have the orange O-rings been replaced under the intake manifold? That's all I got, someone else will chime in. Link to comment Share on other sites More sharing options...
zero260 Posted December 10, 2016 Author Share Posted December 10, 2016 Followed service manual on diagnostic. I ended up cleaning the maf and she's running fine so far. I can't believe a dirty maf caused it to run so poorly, it felt like it was dead on 2 cylinders Link to comment Share on other sites More sharing options...
serx7 Posted December 10, 2016 Share Posted December 10, 2016 I was chasing a slowly increasing rich condition earlier this year. After cleaning the MAF behavior would return to 'normal' but after a week or 2 it would start the rich trend all over again. It started a couple months after installing the GS CAI w/ their oiled element filter but continued after switching to GS's dry element filter. I replaced the MAF sensor and it's been well behaved ever since (several months so far). Link to comment Share on other sites More sharing options...
Max Capacity Posted December 10, 2016 Share Posted December 10, 2016 FWIW, I clean my MAF once a year, normally in April after winter. I also clean the K&N filter and lightly oil it. I do that to both cars even if I only put 7000 miles on the Spec B. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
Tuning Alliance Posted December 11, 2016 Share Posted December 11, 2016 Should talk to your tuner to troubleshoot. -B Contact us for all your tuning and performance parts needs! Etuning the legacy community since 2008! Follow us on FACEBOOK | INSTAGRAM [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
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