single 3" exhaust??

Grand nati0nal · 09-24-2004, 04:05 PM

tell me what you think. I was going to do my own exhaust system. I was thinking of a single 3" exhaust. 3"downpipe, 3"intermidate pipe, no cat, muffler of my choice or none at all, and a 3" exit. Would this help my performance at all? My stock exhaust looks like 1&3/4 where it splits, and untill the muffler. Then like 2" pipes out. Man these mufflers are wierd.

Steve Wood · 09-24-2004, 04:41 PM

Normal exhaust is 2.5" to the cat and 2.25" back to an above the rear axle muffler...with a few kinks that may be smarter.

Some run a 3" pipe....single muffler, etc. as you describe. Some get tired of the sound, others think the more obnoxious/loud, the better.

Certainly fine for performance and lighter weight.

Grand nati0nal · 09-24-2004, 04:49 PM

well this will be down the road a little. When i get it running right and get a scantool maybe ill do it.

ULYCYC · 09-24-2004, 06:02 PM

If you take a peek under a UPS truck you will see what it looks like

As you can tell I think they are ugly and sound bad. But if you run in the 10's you may see a difference due do less restriction and weight.

09-24-2004, 04:05 PM	#1 (permalink)
Grand nati0nal Registered User Join Date: Sep 2004 Posts: 422	single 3" exhaust?? tell me what you think. I was going to do my own exhaust system. I was thinking of a single 3" exhaust. 3"downpipe, 3"intermidate pipe, no cat, muffler of my choice or none at all, and a 3" exit. Would this help my performance at all? My stock exhaust looks like 1&3/4 where it splits, and untill the muffler. Then like 2" pipes out. Man these mufflers are wierd.

09-24-2004, 06:02 PM	#4 (permalink)
ULYCYC Fuhgeddaboudit Join Date: Sep 2000 Location: Brooklyn, NY Posts: 16,529	If you take a peek under a UPS truck you will see what it looks like As you can tell I think they are ugly and sound bad. But if you run in the 10's you may see a difference due do less restriction and weight. __________________ ED BAKER 87-T, Maplight equipped rear view mirror.. 93 PARK AVE"SUPERCHARGED" BPG#1458 My Photo Page buickperformancegroup.com "As democracy is perfected, the office of President represents, more and more closely, the inner soul of the people. On some great and glorious day the plain folks of the land will reach their heart's desire at last and the White House will be adorned by a downright moron."---H.L. Mencken 1927

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09-24-2004, 04:41 PM	#2 (permalink)
Steve Wood An American American Join Date: Sep 2000 Location: East of Eden, Texas Posts: 36,908	Normal exhaust is 2.5" to the cat and 2.25" back to an above the rear axle muffler...with a few kinks that may be smarter. Some run a 3" pipe....single muffler, etc. as you describe. Some get tired of the sound, others think the more obnoxious/loud, the better. Certainly fine for performance and lighter weight.

09-24-2004, 04:49 PM	#3 (permalink)
Grand nati0nal Registered User Join Date: Sep 2004 Posts: 422	well this will be down the road a little. When i get it running right and get a scantool maybe ill do it.