01redws6ta

Well, my exhaust sounded great until I installed a cam and LT's with ORY. Now it has what I'd describe as a "cackle" noise on acceleration between 2200 and 3200 RPM's...sounds like an old pickup with glasspacks. Would anyone suggest installing a bullet muffler in the I-pipe, or would something else work out better? Any suggestions appreciated.

RevGTO

iTrader: (12)

Welcome to the wonderful world of rasp. Check out post #3 in this thread. This guy cured it with a powerpack. https://ls1tech.com/forums/generation-iii-external-engine/753172-single-cat-off-road-y-pipe.html

amsterdamn

iTrader: (3)

Moroso Spiral Flow bullet on the I-pipe. Made a big difference for me. It's not expensive, fits well, and is not very restrictive.

xBROKEx

iTrader: (7)

ive heard this is a big reason people switch to a TD setup, the Ypipe is waht causes this noise

sroach20

iTrader: (31)

did it make your exhaust more quiet, or just give it a deeper tone without rasp.

Z ROADSTER

Try some of the chrome resonator tips . There are some nice looking ones out there.

amsterdamn

iTrader: (3)

All of the above.

01redws6ta

Where did you get the moroso spiral flow?

RacerScott

iTrader: (6)

I have the same setup as you but I have a TSP catted y. No rasp, sounds great. You could also consider some high flow cats.

twizted_creations

iTrader: (4)

Bang for the buck put a bullet on the I and call it a day.

dsrour

I put on dynaflow high flow cats and w/ Hooker mufflers, sounds perfect and less exhast smell too.

01redws6ta

Thanks for the input guys...I think I will call TSP tomorrow and see what they suggest. I will probably go with a bullet of some sort or "powerpack". In hindsight I guess I should have gotten the catted Y-pipe, but I didn't think it would be that much different considering I had stock manifolds with empty cats and SLP Y-pipe into the Hooker catback before. The cam probably effects this too.