...because hooker side tube mufflers and the obx copies suck

T-Guy69 said:
Curious 84rzv500r do you happen to run at sound restricted road courses? What is your decibel limit? That is very similar to what I am doing. Except you chose a dynomax ultraflow muffler and I chose the XR-1® Multi-Core Pre-Runner 3" Center-Center 34"x8.5"x5.5" – (Racing Muffler part # 400115). Your engine is much bigger that mine at 502. I have a small block.

I can't run the car if they will not let you me track due to noise.

BTW: Love those side pipe covers. If I may ask where you purchased them and do they keep you from burning you legs.
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Ive never run the car where there are noise limits... I also run vortex cones in the collectors...i can tell you that open side-pipes are painful... i am pleased with my pipes... I used a similar approach on my 1972 GMC pickup that I stuffed an 8V71 Detroit diesel in and a 568 CID two stroke can really bark I'm getting ready to fire for the first time... we'll see how that goes

Re shields yes there are from forum member Bangcok Dean and with a bit of modification they fit my pipes just fine and yes the do provide some measure of saftey
http://steelshields.com/
 
T-Guy69 said:
Not sure how many guys here run at Lime Rock. They have an 86 dB noise restriction. I currently have C3 with hooker side pipe headers with max flow inserts. The car is loud.

I called Borla, and spoke to Dave Borla. I also spoke to Ryan Baker
Customer Service Specialist ([email protected]) at 805.246.6073.

We went through the spec on a number of mufflers and came to the conclusion that the Borla 400115 XR-1 Multi-Core racing muffler would give me my best chance at meeting the sound requirements. This muffler is usually used on racing trucks and is almost as big as a side pipe. 34"X8.5"X5.5". .
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$469 each! They better be good for that price. My guess is any glass pac with a vortex cone would be close.
 
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