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Who's running 14's with Dynomax cat-back?

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Old Nov 24, 2003 | 06:41 PM
  #1  
92RSFivePointSlow's Avatar
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Joined: Apr 2001
Posts: 400
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From: East Windsor, NJ, 08520
Car: 2002 Harley Nightrain
Engine: twin cam 88ci
Transmission: manual
Who's running 14's with Dynomax cat-back?

If you run the 1/4 mile in less than 15.0 seconds and are using the Dynomax/Walker SuperTurbo cat back please tell me what times you ran. I would also like to know what type of induction system you were using, so I can try to determine the limitations of this exhaust system. Thanks
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Old Nov 24, 2003 | 07:57 PM
  #2  
TunedPort 335's Avatar
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Joined: Jan 2003
Posts: 1,786
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From: Paxton, MA
Car: 1987 Camaro Z28
Engine: 335 TPI Stroker
Transmission: Tremec TKO 500
Axle/Gears: 10 bolt / 3.42
My friend Joe (SLP IROC-Z) ran a 13.9 @ 97mph with his Dynomax catback. This spring he started running 100mph traps but had no traction off the start.

He has a stock TPI setup with a ported plenum.
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Old Nov 25, 2003 | 07:56 AM
  #3  
Jim85IROC's Avatar
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Joined: Jul 1999
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
My best 1/4 so far with the IROC is a 14.3@97, and I'm still using the 2.5" dynomax Super Turbo catback.

I even have a sound clip.
http://www.sover.net/~iroc85/85_iroc_exhaust.mov

The car should be much faster, but that's a whole 'nuther story.
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Old Nov 25, 2003 | 08:07 AM
  #4  
92RSFivePointSlow's Avatar
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Joined: Apr 2001
Posts: 400
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From: East Windsor, NJ, 08520
Car: 2002 Harley Nightrain
Engine: twin cam 88ci
Transmission: manual
cool, thanks for the sound clip. The car this will be going on is a 305 with about 220hp, I think both of you have 350's. I read in another post that "a" super turbo free flowed up to 175hp, but I know it was not the part number used for our cars, so it might have been smaller or whatever. Anybody else have times?
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Old Nov 25, 2003 | 09:16 PM
  #5  
Petes 84Z28's Avatar
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Joined: Jul 1999
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From: out of my mind; be back in 5 minutes....
Car: 1989 Firebird Formula
Engine: Internal Combustion
Transmission: Completed
Axle/Gears: ones that turn.
I had the 2¾" system on my Camaro with an LG4 and had hit 14.494 and 98.69 with it.
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