Ok i have a 98 t/a with long tubes and offroad y-pipe. At first i had the flowmaster kit on the car but wasnt that satisfyed. So last week i ripped it off and went with a dynomax bullet and a dynomax y in the rear where the flowmaster use to be so the pipes still exit the rear. It sounds good and loud reving it and putting around keeping the revs under 2200 or so. But when i get on the throttle it makes a bad popping sound, like a typical pickup with straight pipes. It sounds really really bad. I need help, please!!!

 

I dont want my car to sound like alot of these redneck pickups around hear. My current setup flows really good but it just sounds like crap.

 

http://www.ls1sounds.com

 

Yea ive been on the ls1sounds website. What makes the poping sound under load @ a certin rpm range?? Is it the muffler location or design.

 

You are experiencing rasp. Some mufflers have more rasp than others (slp lm) and having an off road y pipe may be giving you more rasp as well.

Usually people will add cats to their y pipe or weld a bullet muffler in the I pipe to help reduce some of the rasp.

 

Bullets are main causes of the rasp. I would look into a chambered muffler like a magnaflow or something to that effect.

 

I agree, pretty much any "bullet" is going to have rasp. Try a Borla or Magnaflow or maybe even a long Powerstick.

 

It also doesn't help with the firing order and the resonance of an AL block.

 

I have a small amount of rasp in my setup, its a Magnaflow catback. But it sounds nothing like those "big redneck trucks" that you describe. And i'm here at A&M..those trucks are everywhere.

 

Bad poping sound when you get on it? My setup is different than yours but i have dual bullets and the only time it pops on me is when i am in gear slowing down. What size bullets did you purchase?

A chambered muffler will solve this or cats will get rid of the rasp

 

I have dynomax 24222, its 3in inlet and outlet and 12in long. Its placed down the center of the car, in between the y pipe and the over the axle tube.
I was looking in one of my jegs and saw a Moroso bullet simular to my dynomax. Anyone ever used one of these? They are a spiral flow muffler instead of a perforated design like my dynomax. Would one of theses maybe solve my problem or would it still have that really loud rasp. Which muffler would use recommend?? I still want my exhaust to exit out the rear, and i would like to reuse my 3in tail pipes and over axle pipe.

 

So whats more rectrictive chambered muffler or high flow cats? Cats right? Plus i would have to buy two cats and only one muffler. Right??

 

Anyone with any part numbers?