JDANNER

I'm looking for info on lightweight racing mufflers. I'm racing a C4 SCCA racecar and every pound I can loose from the car would be a help (I know it's easier to loose it from me but my wife can't drive!). The rules say I must stay below 104db. Straight pipes would put me too close to that depending on the WX conditions. Any help or leads would be appreciated.

RX7 KLR

http://www.burnsstainless.com/Ultral...temuffler.html

wtknght1

I don't know what all you've done to your car, how much HP it has, or what the current sound level is, but here is another option and won't add much weight at all:

Every track has a sound station located somewhere on the side of the track, so figure out what side it's on and mount a set of curved extensions on the ends of the tail pipe and point them away from the sound meter. It's a cheap, light solution that will drop your sound level several dbs.

Our exhaust in T1 is open from the cats back, so it's still got the cats and stock manifold, but other than that, it's open (no mufflers). The highest db I've seen is about 97 or so. It's a stock engine too. 104 is pretty damn loud so unless you've done a lot to your engine and exhaust, you may be just fine without the mufflers.

Carolina C4 Racer

I beleive that TPIS in Minn. offers a system that runs both pipes to the right side & then exits the car through a single muffler. This "should " reduce & better distribute the weight of the exhaust system.

XPC5R

The Borla XR1 series do a good job with sound even in their smaller sizes. Lots of good sizes and shapes to choose from.