Hey guys, I bought my car from dealership & I had trouble codes p1168 & p1148 and it would cut out and I had loss of power.. well it got rod knock a month later (shitty deal no warranty) so I did a motor swap, engine w/ 44k miles on it. Now I'm still getting codes: p1168, p1148, p0037, p0057, p1051 & p1031, I have changed o2 sensors (all 4) & cleaned Maf. Car has DC sport headers & hi flow cats with stillen dual exhaust. any ideas on what problem could be?? Also has o2 sensors spacers after cats.

 

Is the car tuned?

 

Car is not tuned yet. But I've heard plenty of people running w/ headers and exhaust and never getting them tuned and not having o2 trouble codes pop up. Plus my mileage is terrible. Like 10-12 mpg on high way. Driving economically.

 

Yea bro I have a tune with all bolt on and I just up graded to a 3.5 inch furookie and the car thru a code on me. It was a maf/o2 sensor/running to lean issue. I was shocked. I took it off and put the stock one back on and it runs great now.

 

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