Well i just installed a greddy 4-2-1 header on my 99 si as soon as i started to test drive it i heard some what of a sputtering sound..i don't kno what it is but is it supposed to make that sound or i have a leak or something, if i get on the gas the sputtering will get louder and busier but if i drive pretty calm the sounds not there someone help!

 

u put that metal gasket on the header?

 

yea i did

 

sounds like you have a leak, the more gas u give it the more exhaust you motor creates hence making the leak louder

did you make sure it was tightened real good?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civichatch6989 &raquo;</TD></TR><TR><TD CLASS="quote">sounds like you have a leak, the more gas u give it the more exhaust you motor creates hence making the leak louder

did you make sure it was tightened real good? </TD></TR></TABLE>

What he said.

 

yeah, it's a leak.

 

its tightened pretty damn good, the sputter actually doesn't sound like it gets louder as i give it more gas it just sounds like it's there

 

where would i most likely check for the leak?

 

what size piping do you have? maybe back pressure..

 

is it kind of a popping sound?

 

check the doughnut (or whatever u call it) where the header ends and cat starts maybe thats loose. if its a 2 peace check the section where the top part of the header and the downpipe meet. those are the only places that it can be loose.

 

i would check the gasket and make sure its seated all the way around and make sure that no little particles of anything are in there causing it to leave a small hole letting exhaust gass's leak out.

 

i have 2.25 piping with hks titanium high power