Cat or not to cat

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Apr 2, 2006 | 12:20 AM

#31

Dr. SS

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From: Chicago

Quote:

Originally Posted by nj1266

Is your Megan test pipe 3 inch on the inside of the resonated area? I got an LPI test pipe and it was 3 inch at the mouth and 2.5 inch in the resonated area.

yep internal diameter on the test pipe is a full 3"

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Apr 2, 2006 | 08:43 AM

#32

Silk

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From: Milwaukee ish

Quote:

Originally Posted by evo-licious

I've seen an electronic cel fix by Perrin. I've also seen the "GP Moto Oxygen Sensor Adaptor CEL Fix" which basically puts the O2 sensor out of the exhaust flow. I'm assuming the one from Perrin is better.

No, a mechanical fix is better. They work and you dont have to hack up any wiring

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Apr 2, 2006 | 09:30 AM

#33

BigAeVo

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From: milwaukee,wisconsin

i have the buschur racing cel fix no problems so far.

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Apr 11, 2006 | 12:47 PM

#34

nj1266

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Quote:

Originally Posted by Dr. SS

yep internal diameter on the test pipe is a full 3"

Does it have a bung in it for a wideband O2 sensor? Where did you get one from?

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Apr 11, 2006 | 02:38 PM

#35

BOOSTEZ

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From: Plano, TX

You will tell a performance difference with a Hi-flo cat and TP. I have both and just recently switched to my TP..I can clearly tell at high end.. not so much down low though. I also have a resonated test pipe and the sound is very throaty, but not loud.. It sounds the same when driving in traffic.

-M

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Apr 11, 2006 | 08:29 PM

#36

VRSF Tiago

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From: Hudson, MA

It's less environmentally friendly, but I've noticed the difference between a high flow cat and a catless test pipe before on a few turbo cars. You'll notice the noise as well as the butt dyno as well as turbo response.

Swapping them out when it comes time to pass emmissions/inspection sure is a ***** though.

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Apr 12, 2006 | 04:09 PM

#37

ZimDoc

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From: Avondale, AZ

Test Pipe. Only 5% of the polution in the US is caused by Car/trucks. Go nuts and burn that fuel!!!!

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Apr 12, 2006 | 05:29 PM

#38

sonicnofadz

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From: Baltimore, MD

I just switched from no cat, to the ultimate racing high flow 3 inch cat, then back to my perrin 3 inch test pipe (emissions testing). I noticed no difference in sound what so ever. I did notice a slight increase in power though, along with exhaust soot at high rpms

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Apr 12, 2006 | 05:39 PM

#39

Ph3n1x

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Test Pipe baby. Its like wearing a condom. It better without it .

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Apr 12, 2006 | 08:09 PM

#40

mcwop23

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From: Gainesville, FL

so far so good on my catless buschur TBE, not even that loud, no fumes in the car.

and no CEL

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Apr 12, 2006 | 08:34 PM

#41

BigAeVo

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From: milwaukee,wisconsin

what kind of testpipe fits with the hks catback/helix downpipe anyone have this setup im sure most testpipes will fit but i just wanna make sure.

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Apr 12, 2006 | 08:38 PM

#42

sleet

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From: Ft. Lauderdale

Just go catless, its more fun.

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Apr 12, 2006 | 08:45 PM

#43

silverEVO8

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From: Utopia

Quote:

Originally Posted by evo-licious

I'm going to be putting a TBE on my '05 Evo, and can't decide if I should go with a 3" free flow cat or cat delete pipe. I don't mind having to put the stock cat back on to get emissions. I'm just curious how much more HP I will get with the cat delete pipe. If it's not significant then I will just go with a free flow cat to save the hassle each year at emissions time.

I had the test pipe in my EVO VIII but I could not tell you if it made more power or not. I never dynoed before and after.... However, if you want to do that, I've got a nice 3" B&B DP with a bung welded for the WB O2 sensor and a matching TP with the CEL fix that I can sell you for a very good price

. I've gone completely back to stock with my MR.........

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Apr 13, 2006 | 08:09 PM

#44

calvin

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From: myrtle beach

Quote:

Originally Posted by BigAeVo

what kind of testpipe fits with the hks catback/helix downpipe anyone have this setup im sure most testpipes will fit but i just wanna make sure.

i have that setup and use a helix test pipe...fits fine, just be sure to loosen the dp bolts then tighten from the front of the car to the rear when installing...i am taking mine off though, too damn loud, my ears ring when i get out of the car...i just ordered the ur high flow