Brannon9827
Member
- :
- 2003 Mazdaspeed Protege
I just rebuilt my engine and broke it in (1100 miles on it now). I have also just installed a GT2871R Turbo. Now the car runs fine but when I get on it the car pulls hard and when I get between 8-10lbs of boost the car jerks and I loose all boost. I gapped my spark plugs to see if that would help (NGK Iridium). But the car runs exactly the same. What would be causing this problem? I have heard of fuel cut but not sure if that's the problem. Also would it being 20-30 degrees out matter?