Do exhaust sound supression inserts work?

[Chris Sawatsky]

I'm talking about these things
http://www.carchemistry.com/ccinserts.html

Does something like this work, in theory? I'm looking for a quick and easy fix to slip into my exhaust to quiet it down enough that I don't set off car alarms if I decide to drive the race car on the street once in a while (it is still registered/insured)

[joeg]

Why not. Looks like a kind of "build your own" muffler.

Probably better than supertrapp plates.

[racer14itc]

I tried one of these once. It did make it quieter but also made it about 2 seconds a lap slower (in a 2.25" exhaust system vs. a Dynomax bullet muffler).

So it will help you on the street but don't bother trying to use it on the track!

MC

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Mark Coffin
#14 GP BSI Racing/Airborn Coatings/The Shop VW
Scirocco
Zephyr Race Coaching and Consulting
http://pages.prodigy.net/scirocco14gp

[This message has been edited by racer14itc (edited March 25, 2004).]

[Chris Sawatsky]

Yeah I'd just be putting it in when I drive on the street

Do you still have the insert that you might want to get rid of since you lost time with it?
I don't feel like paying $60 for it, though it doesn't look too hard to fab up either

[racer14itc]

Sorry, that POS hit the trash as soon as I got back from the track that weekend! http://Forum.ImprovedTouring.com/it/biggrin.gif

MC

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Mark Coffin
#14 GP BSI Racing/Airborn Coatings/The Shop VW
Scirocco
Zephyr Race Coaching and Consulting
http://pages.prodigy.net/scirocco14gp

[gran racing]

Chris, I had a similar issue. I also wanted to be able to use the car on HPDE days which are almost always muffled events with a 89 db maximum. I also race in many events that impose this same db limit. I put together a slip-on unit that attaches to the end of the exhaust and very easily goes on / off using a supertrapp product. I realize that it costs about $60 - $70, but sure is worth it when needed.

I'd be happy to send you a pic if interested. ([email protected])


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Dave Gran
NER #13 ITA
'87 Honda Prelude

[Jake]

Looks like this:

http://www.racerpartswholesale.com/images/su344.jpg

Can be bought at http://www.racerpartswholesale.com/

[This message has been edited by Jake (edited March 27, 2004).]

[joeg]

Supertrapp plates...ugh

[gran racing]

Funny, that's what someone else recently said at a race. I put the super trap extension and raced. They played with cans, ect. to quite it down. I still had a nice race weekend...

The attitude changed pretty quickly after that!

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Dave Gran
NER #13 ITA
'87 Honda Prelude

[joeg]

Dave--I used the SuperTrapps for years. They are a bit too maintenance intensive (have to disassemble and clean periodically) and promote corrosion in the exhaust system.

Their best function is as a flame suppressor for offroad racing.

Cheers.

[gran racing]

Well I only use this for emergencies, so it isn't bad for me. But if a person were to always use it, I can understand your viewpoint.

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Dave Gran
NER #13 ITA
'87 Honda Prelude