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Modular cutout and cat setup in place of stock cat.

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Old Feb 17, 2012 | 12:37 AM
  #1  
87350IROC's Avatar
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From: Everett, WA
Car: 87' IROC
Engine: L98
Transmission: T56
Modular cutout and cat setup in place of stock cat.

Hey guys, just wanted to share my latest project.

I have decided to replace my catco stock replacement cat with a modern spun metal cat and exhaust cutout in the same location. It will consist of:

Mac "test" pipe - 48792
DMH cutout - 2030sf
Magnaflow cat - 99659HM
Race Ready swivel turn down - 815-STSS300

The test pipe will be cut up and the pieces welded in. There will not be much of the test pipe left when I'm done. Pretty much just the ends. It is a tight fit. Then I will have it ceramic coated. This setup looks like it will fit very well in the car. With the turn down fitting nicely at the end of the bump in the floor pan.





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Old Mar 13, 2012 | 11:12 PM
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87350IROC's Avatar
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From: Everett, WA
Car: 87' IROC
Engine: L98
Transmission: T56
Re: Modular cutout and cat setup in place of stock cat.

Finally got this thing welded up.



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Old Mar 15, 2012 | 11:26 AM
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1ADan's Avatar
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From: Pepperell, MA
Car: 1987 Trans Am
Engine: LQ9/L92
Transmission: 4L60E
Re: Modular cutout and cat setup in place of stock cat.

very slick, nice job. what did everything end up running ya?
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Old Mar 15, 2012 | 11:53 AM
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87350IROC's Avatar
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From: Everett, WA
Car: 87' IROC
Engine: L98
Transmission: T56
Re: Modular cutout and cat setup in place of stock cat.

Mac "test" pipe - 48792 - $75
DMH cutout - 2030sf - $200
Magnaflow cat - 99659HM - $120
Race Ready swivel turn down - 815-STSS300 - $45

Total - $440 + welding

You could easily save a lot of money buy cutting up a stock cat for the ends rather buying the Mac test pipe. This is what I would have done had I known I would be using so little of the test pipe. You could also use a much cheaper turn down. Easy to save $100 right there.

John
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Old Mar 15, 2012 | 09:22 PM
  #5  
85_ZED28's Avatar
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Joined: Jan 2001
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From: St Catharines, ON
Car: '85 Z28
Engine: 350
Transmission: T5
Axle/Gears: 3.23
Re: Modular cutout and cat setup in place of stock cat.

Very cool, nice work!
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Old Apr 13, 2012 | 01:15 AM
  #6  
87350IROC's Avatar
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From: Everett, WA
Car: 87' IROC
Engine: L98
Transmission: T56
Re: Modular cutout and cat setup in place of stock cat.

Finally got this thing ceramic coated along with my headers and y-pipe.

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Old Jul 5, 2012 | 11:10 PM
  #7  
Zach/90\irocZ's Avatar
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From: San Diego, California For Now
Car: 88 Formula, 90 Iroc RIP, 92 RS Sold
Engine: 305 to 350
Transmission: 700r4
Axle/Gears: 10 Bolt
Re: Modular cutout and cat setup in place of stock cat.

That's looks like a fun time on a open road or at a stoplight to scare the peppy people driving the BMW lol jk
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Old Jul 9, 2012 | 08:09 PM
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From: MA
Car: 1989 IrocZ
Engine: 421 Dart Stroker
Transmission: 4L60E Cahall Performance Built
Axle/Gears: Midwest Chassis Fab 9/ 3.55 gears
Re: Modular cutout and cat setup in place of stock cat.

Thats cool . Any videos on hows it sound? Ever think about making some to sell? Id buy one without the cat of course kp emmisions here. Nice job though.
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