Car running like crap!! Please help!!!

[turboman34]

I can not figure this out to save my life. I've converted my car back to maf from being on gm map and maft. Installed my smic and take it out and it's like hitting fuel cut at 3000 rpm. WOT it does fine until like 6500 rpm. I've changed the spark plugs and it ran fine for one time and started again. Swapped o2 sensor with a buddy's evo and it still did it. What could it be? My mods are Intake, exhaust, and walbro 255. It has a ebay style greddy bov.

 

[clipto]

Update your profile if you can of what parts you have on your car. What turbo are you running? Are you all stock for the most part? Have you checked all boost leaks and spark plugs?

 

[turboman34]

I'm running a mhi 16g and yes I've changed them. Haven't done a boost leak though.

 

[clipto]

Ok try all these things first see if helps by checking the list in this link. http://www.dsmtuners.com/forums/ecmlink-tuning-log-file-advice/443297-please-read-before-you-ask-ecmlink-dsmlink-log-advice.html Sometimes you gatta get down down clean up what you can look over the car even just stare at it to get a good mind set.