ok everyone i need a lil help i have an 05' performance Z and i have DC's headers , kinetix plenum and HF cats JIC Y pipe and stock exhaust i have rasp at 3-4RPMs like alot of ppl do i dont like the RiCEY sound to it. JW if its an exhaust leak? the cats? or something else BTW how to u feel with Kinetix's Plenum? i had one crack on me already should i go with crawford instead? or they the same thank alot


Matt

 

it's ur cats.... try searching and u will find like 100 threads about cats/TP's and rasp...

 

add some resonators inline before it goes into one pipe.........

-justin

 

thanks alot i thought it would might be my cats


matt

 

Its the cats. There is a very recent thread testing this out. Crawford has a very nice cast plenum out, this means no need to send them your stock one.

 

It could be a combination of your CATS and Headers.

 

where, in the ypipe? where can one find said resonators? is it a welding project?