i have searched for a while now and found nothing to answer my exact question. I have a woosh sound while driving around 2.5-3k rpm. it sounds like an air leak but i had it idling on a lift and no puttering air whatsover. will you hear rasp while rpms are on there way up as well as on there way down. when i rev it up and it comes back down i hear the rasp. im fine with that doesnt bother me too much. the question is should i hear rasp while im acclerating? it sounds like an air leak but i dont believe its leaking. should i put it on a lift and rev it to find air leak? or is checking it ad idle sufficient enough?

 

yep, it's rasp! when I slow down and am around ppl, I take it out of gear so the rasp doesn't last as long.

 

yeah thnx man i thought it was. can rasp be defined also as a whisp of air. like i said kind of like an air leak but its not an aor leak?

 

wow just installed my helix test pipes + kinetix y pipe today. it is so raspy and smelly lol but i like it

 

yeah about the smell FTW! i love that smell. yeah i went from hi flow cats to test pipes and the smell is awesome.


now you need y pipe back exhaust and your all set

 

Why do people care so much about rasp , it happens with performance parts .

 

you sure it doesnt sound like a zoom..

 

i dont care about rasp just want to know if it possibly an air leak or not.

 

If you went underneath, and heard nothing, then I would stop worrying about it! Sounds like your all good to go!

 

yeah i hope so. lol

 

You are pretty much dead on describing an air leak. It can also be described as a wet sputtering that is buzzier as you drive.

Rasp in a sound caused between 3 and 4k rpms at a little past half throttle with test pipes.

An air leak sound happens at all times, even coasting or sitting and revving to low rpms.

You won't be able to tell by being underneath the car, as this noise can be generated by even the smallest gap in a relief cut that's even under a clamp, or any space between two flanges large enough to slide a fingernail in.