89 CRX ITA car
I have the standard DC header with a cherry bomb muffler that ends in the center of the car
Has anyone tried anything else that knocked the sound down without the loss of power?
David
89 CRX ITA car
I have the standard DC header with a cherry bomb muffler that ends in the center of the car
Has anyone tried anything else that knocked the sound down without the loss of power?
David
Talk to tGA. I think he runs a back to back resonators and is around upper 80 db.
Demetrius Mossaidis aka 'Mickey' #12 ITA NESCCA
'92 Honda Civic Si
STFU and "Then write a letter. www.crbscca.com"
2013 ITA NARRC Champion and I have not raced since.
I'm running a pair of these Walker Bullet Mufflers in series with a center dump in front of the tank, and I'm usually low- to mid-90s at NHMS. Dyno numbers are "very good".
How much power is lost? How about lost top RPM?
Thanks, MM
Mike Ogren , FWDracingguide.com, 352.4288.983 ,http://www.ogren-engineering.com/
Versus what? I've never tested it any other way. No desire to get into any kind of significant development expenses, just wanna race.
But when you do, please pass along the results!
- Greg
P.S., and no, I'm not spending money at Burns' Stainless; eBay China copies work good enough for me!
The only info I had was from David Vizard's book "how to build HP vol. 1"
He goes into how to test and which brand names had the best results
Walker dynomax, Cyclone sonic, Thrush turbo (all V8 testing)
Stuff like that
Also hot rodding 101 was never use a cherry bomb muffler they are laud and they kill power
David
Last edited by Davegt74; 05-14-2013 at 12:40 AM.
What about earplugs?
Art Jaso
Former 1989 Toyota MR2 #55 ITB
DC Region SCCA
DC Region Board of Directors
Coordinator of Racers Helping Racers Fund
http://www.racershelpingracers.com/
PDX/TT Committee Member
PDX Co-Chief of Grid
PDX Chief Technical Inspector
SCCA Pit Marshall
SCCA Pace Car
SCCA F & C
Producer of "Racing Summit Point" Video
http://vimeo.com/67177646
I like Hushpower by flowmaster. they shut the noise down enough and don't pull the dyno numbers down, at least on our MR2s. not the cheapest option out there, but they work. and they fit in absurdly tight spots, like the tunnel in a civic or anywhere in an MR2.
Last edited by Chip42; 05-09-2013 at 01:07 PM.
Thanks everyone for the input
Hushpower by flowmaster
[ame="http://www.youtube.com/watch?v=Zd4e8htvEfc"]http://www.youtube.com/watch?v=Zd4e8htvEfc[/ame]
borla xr-1
[ame="http://www.youtube.com/watch?v=r3pzr-MtZQo"]http://www.youtube.com/watch?v=r3pzr-MtZQo[/ame]
David
We always used two shorter thrush cherry bombs in series much like TgA's setup
on our ITA CRX Si. Seemed to keep the car quiet enough for Waterford Hills 75DB rule.
Todd Robbins. [email protected]
Don't forget about the weight consideration! I've had a Magnaflow universal muffler under there for several years and it gets the job done, well built and inexpensive. Although a bit loud, 100db, it passes sound restrictions. Besides, Mario likes them.
Check out the 4" 5" & 6" round.
http://www.magnaflow.com/02product/universalmuffler.asp
Art Jaso
Former 1989 Toyota MR2 #55 ITB
DC Region SCCA
DC Region Board of Directors
Coordinator of Racers Helping Racers Fund
http://www.racershelpingracers.com/
PDX/TT Committee Member
PDX Co-Chief of Grid
PDX Chief Technical Inspector
SCCA Pit Marshall
SCCA Pace Car
SCCA F & C
Producer of "Racing Summit Point" Video
http://vimeo.com/67177646
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