New sound results: carsound cat and resonator weld

**austrian type-R** · May 20th, 2001, 10:17 AM

Damn, yeah! I?ve managed it, to get that exhaust much quieter and still very nice sounding!

SETUP: Kamikaze ceramic header with the 2,5" downpipe. Thermal 3" exhaust with an Carsound cat 3" and a 650mm midpipe resonator (includ a dezibel restrictor. This is a short pipe, which restrict the diameter of the exhaust pipe a little, but I think the restrictor speeds the flow of the exhaust gases up?!?)

The exhaust is still loud and (mostly between 4krpm and 5.5krpm) and has a BIG rumble at Vtec crossover! Above 5.7krpm it is much quieter! Why?!?!

MY car is SOOOO nice sounding, I love it. I can feel the Vtec x-over much much more, like in the times when I was N/A. smile

Perhaps I?ve lost a few hp from the cat and resonator, but it was way too loud for street driving and I don?t want to drive with ear-protector or a helmet.

On Friday is dyno-time and I hope I can add 25-30whp with the exhaust setup, tuning my cam-gears and fine-tune the a/f mixture with my new cartech FMU and the Apexi VAFC. I?ll let you know of corse!

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98? ITR
supecharged @ 6psi
BTC unit, apexi V-AFC,
K&N ram air filter, skunk2 cam gears, ingalls camber kit

**lundgren** · May 20th, 2001, 07:43 PM

For those thinking about doing this, get thermal to weld the 'quiet mod' into yours before you install it. When I talked to thermal, they said that a resinator WOULD take power out of the car, but that their modification does not as much.

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http://www.groupbuycenter.com/

**reddelsol** · May 20th, 2001, 08:18 PM

Since I don't have the kami yet, I'm interested to see if Austrian type R can succeed in getting fair hp benifits out of it while quieting it down quite a bit

good luck

**austrian type-R** · May 20th, 2001, 09:31 PM

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by lundgren:
When I talked to thermal, they said that a resinator WOULD take power out of the car, but that their modification does not as much.
<HR></BLOCKQUOTE>

Of course Thermal say so. They want to make the business! MY mid-pipe resonator is a full 3" one, and I think there is not much lost in power. Hell, my JETEX resonator is made for rally cars and I don?t think it?s eating lots of power!