My car just keeps sputtering. Jumps from around 750-900rpms...stays most the time around 900 but jumps down to to 800 and even sometimes 750 sounds crappy...Its very noticeable with the exhaust. Make the car vibrate some. Then while turning left or right there is a kinda grinding noise. It even does it sometimes when im just sitting there and turn my wheels. Checked the power steering its good..Just an fyi. New air filter, Just changed the oil. I have a high flow intake, And fuller header back exhaust. Suspension wise i just have a subframe brace and strut tower bar. Both things have been going on for about 6 months...Any input would be great. Thanks ahead of time.


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