05 WRX 5sp Need Help tuning

05 WRX 5sp Need Help tuning

Postby sti2686 » Sun Apr 03, 2011 9:05 pm

Yes this is my own may its on a 2005 wrx
DW 650cc injectors
Topmount
turboback
Fujitsu Intake
vf39

Having trouble getting the a/f to come down early when boost come on. I have tried everything messing with fuel tables, injector size and latency, and maf. If I change the maf anymore it will bog at part throttle and still not come on any fast. Even tried increasing the tip in. I have included a log and the map. Help would be great even on timing suggestions. I know its still pretty rich up top but I can work on that once I get the other part down will shoot for 11-11.3
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sti2686
 
Posts: 3
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Re: 05 WRX 5sp Need Help tuning

Postby absubtle » Wed Apr 06, 2011 8:23 pm

Hopefully, you have saved almost every change. Go back quite aways and change latency, add 5%. Test, keep going. Doesn't matter if everything else gets alittle off. Just see. Last time you changed spark plugs???
Absubtle
CO
absubtle
 
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Location: Denver, CO

Re: 05 WRX 5sp Need Help tuning

Postby absubtle » Wed Apr 06, 2011 8:28 pm

BUT, as my professional opinion, is there is a suction leak, if at the o-ring, of the MAF sensor, or close by. OR a poorly engineered suction pipe, w/ the MAF placed is a turbulence area or sized-wrong. I see this w/ front mounts, but since you are top mount, may not be a suction leak, but a BOOST LEAK.
Absubtle
CO
Sorry been tuning for 11 years, OpenSource for 5 years. I have a AWD/2w dyno, eddy current. I have 800+ different customer's roms for Subaru, alittle less w/ Evo.
Sounds like an Ebay suction or an incorrect MAF placement/sizing.
Replace w/ stock suction pipe w/ stock MAF housing, retest.
absubtle
 
Posts: 43
Joined: Sun May 13, 2007 2:24 pm
Location: Denver, CO

Re: 05 WRX 5sp Need Help tuning

Postby sti2686 » Tue Jun 21, 2011 3:23 am

exactly what was posted above, also look at your fuel transition delays and 0 them out I have found this to help
sti2686
 
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Joined: Sat Dec 09, 2006 2:24 am


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