2 chamber flowmasters

[my 1st gn]

how bad are these mufflers hurting my car's performance

 

[BlackMetal]

Any restriction/backpressure is not ideal on a turbo car. Though I don't think it's the end of the world like some people around here "oh my god you use flowmasters?!?!??! you're losing 900hp!!!".

If you have cash to spare it couldn't hurt to replace them with free flowing mufflers, or you could use a test pipe with a cutout and bypass them completely for the track.

 

[QUIP'6']

i heard these are bad for turbo cars because of the internal design. advanced auto carries dynomax ultraflow race muffler for 65 bucks

 

[my 1st gn]

reply

thanks for the replys

 

[BlackMetal]

If you know the exact model of the muffler you use, you can try to look up the CFM flow rating and compare it to a free-flowing muffler. It still won't tell you the exact difference it'll make on your car, but at least you'll see which is more resistant to flow.