WeDriveScions, has it on his tC and has a sound clip also. :D

 

not sure if you have actually seen the dc header very different from the stock manifold if anything the megan looks more like the factory manifold.... all the pipes are similar, looks like they just cut-off the cat and welded a downpipe on it

 

Similiar???

Doesn't look that way to me? LoL

 

You missed the "Same pipe diameter", I didnt mean similar looks/design...besides the cat delete.

 

I have read that the alphaworks is bad for rasp on another site. The post said the rasp was from the header pipes being to close and vibrating against each other. The solution was to weld them togather or maybe wrap the header. You might want to contact alphaworks about it too. Don't know if the guy got the prob. fixed havn't been on that site for a while. I think it was on Your Scion TC.com hope this helps.

 

Unfortunately, you get rasp with the DC Sports and Megan Racing headers as well... the alphawerks gets an additional problem on some of the headers due to that problem... but not all of them...

The Rasp is really a No-More-PreCat Problem than anything else... the trick is finding a muffler setup that keeps it quiet... and there are only a select few unfortunately.

 

the solution is simple WRAP YOUR HEADER SO THE PIPES WONT VVIIIBBRRRATTTE TOGETHER and amplified by the rest of the exhaust sys. let me know if this is a fix.

 

The solution is the CC exhaust inserts....

 

Hks also makes exhaust inserts for their exhaust it supposedly can silence up too 7db

 

Thats for the muffler itself, the CC exhaust inserts are welded into your exhaust piping.

 

Do you know if the cc insert hurt's performance?

 

http://www.carchemistry.com/ccinserts.html
Look at the bottom of the page, the test on the 383 chevy, they gained hp by adding the inserts... Dont know how much the tC will see, but it should deff, quite it down. Hell it can quite a 383 open header chevy, it can silence us....