I've got a 98 SVT. Everything is stock except for my MAC longtube headers, MAC O/R H-pipe, and Flowmaster 50s... Prior to getting the headers and O/R H, i never noticed any oil smoke under heavy acceleration. But since i got them, people I've raced have commented on seeing oil smoke coming out my tailpipes.. Is this a common problem? Or should I be starting to worry about my internals?

 

are you shure its oil smoke? a puf of black fuel smoke is common under hard exclleration, and will be more noticable with an off road h or x pipe, because of having no cats, check you oil, if your car is not burning oil, i think its ok.

 

it could be that but it could be more. What kind of headers do you have, are the Mac.

 

it could be that but it could be more. Many Mac longtube header owners have expreienced the same problem. It is a long story but if you do some research through google searching mac longtube headers and problems. Several people who have them have reported your same problem and i cant remember the whole story but something about metal shavings from inside the header get sucked back into the engine.