weird noise???

[slowss22]

this is really hard to explain. evertime i floor my car it make a sound i like a have a exhaust leak. but there are none. it make a very loud hissing noise.

[burnrubr88]

ever since installed my header and dp, when i get on it and i get to upper rmps, it kinda sounds like my exhuast has an "airy" sound to it, kinda like its leaking or somethin. does that sound like teh same thing?

[slowss22]

yea it loud like that but not in the upper rpms as soon as i punch it and i got a stock exhust with a hi flow cat and flowmaster muffler

[qwikredline11]

sounds like your hi flow cat is plugged ....

[slowss22]

thanks that what thought

[qwikredline11]

try a hi flow metallic cat