Pop Laud saund wen i shift
 

hey everytime i shift from 1 to 2 and 3 a laud pop saund under my car and feals like sombody hit the car under with a humer i have a crx with b17 TO4 tial wastgate and a p28 crome i chiped only donw pipe any other info you need let me know is to lonw to write if anybody experience these before what is it and how i can fix it

Re: Pop Laud saund wen i shift
 

i'm the only one ???

Re: Pop Laud saund wen i shift
 

BOV? Backfire?


JP

Re: Pop Laud saund wen i shift
 

How about Hybrid/Tech playa... O0

Re: Pop Laud saund wen i shift
 

------ humers

Re: Pop Laud saund wen i shift
 

check your downpipes. It could be loose and be swinging. Had that happened to me.

Humers? lol.

Re: Pop Laud saund wen i shift
 

???

Re: Pop Laud saund wen i shift
 

my guess would be unburnt fuel hits the exhaust piping and ignites creating a "pop" due to the sudden expansion of gases in the piping.

Re: Pop Laud saund wen i shift
 

thanks for the help i check all the gasket and pipe, i guess next ting to try is make the down pipe longer. i know somebody have these problem before is not just me. is spend a month trying to fix it is annoying saund like a gun shot wen i shift, these only hapend wen i boost

Re: Pop Laud saund wen i shift
 

I'll bet your right on the money PMP. It happens to alot of our cars Rick. I don't know if there's much you can do about it, but maybe running a full exhaust with resonator or cat would dampen that backfire pop.