Intake & Exhaust Questions and info regarding various aftermatket exhaust systems for the G35 (Headers,Y-Pipes, and Cat-Back Systems)

Installed Crawford HF Cats on 05 coupe

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Old Jun 20, 2005 | 06:40 PM
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From: FROM BROOKLKN NEW YORK NOW LIVE IN VALENCIA CA.
Installed Crawford HF Cats on 05 coupe

wow , cats very nice , you can feel the difference..
installed...
no check eng. light
heat shied bent towards body.... no ticking or rattle
very smooth..
 
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Old Jun 20, 2005 | 09:48 PM
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Great to hear! You're fortunate to get it done right the first time. Many people have had to go back for follow up bending.

Congrats!
 
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Old Jun 21, 2005 | 03:46 AM
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Thats nice dude--mine are on their way, I get them next week.

Hockeyplay95
 
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Old Jun 21, 2005 | 04:53 AM
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congrats man.. get a sound clip if you can
 
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Old Jun 21, 2005 | 10:46 AM
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still waiting for mine
 
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Old Jun 21, 2005 | 04:24 PM
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From: FROM BROOKLKN NEW YORK NOW LIVE IN VALENCIA CA.
those crawford cats are 10 lbs lighter then stock
the stock cats are heavy
 
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Old Jun 21, 2005 | 05:06 PM
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Congratz Man! Planning to Dyno the ride anytime soon? Or how about sound clips? I'd love to see the results.
 
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Old Jun 21, 2005 | 08:04 PM
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I have my Crawfords on my 05 Coupe with STOCK EXHAUST. It sounds great! With the cold air intake, it sounds tough.

I can't wait until I get a Fujitsubo exhaust system. I'm sure it will feel much better.
 
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Old Jun 29, 2005 | 08:08 AM
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Where is the cheapest place to buy the crawford cats? Thanks in adavance
 
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Old Jun 29, 2005 | 08:27 AM
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Originally Posted by tylers600rr
Where is the cheapest place to buy the crawford cats? Thanks in adavance
here
 
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Old Jun 29, 2005 | 08:35 AM
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$500 man I didnt know they were that expensive. Are there any alternatives? Man now I'm thinkin about test pipes cause 180 or 200 sounds alot better than 500 mannnn!!!!
 
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Old Jun 29, 2005 | 08:49 AM
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The Kinetix cats are a little more reasonable.
 
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Old Jun 29, 2005 | 09:01 AM
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ahhh thats alot more reasonable!! Are they just as good? They dont look very good but if they have the good ferrari/mustang sound that everyone talked about with the crawfords then I might be sold on these!!
 
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Old Jun 29, 2005 | 09:12 AM
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I know a guy that has them with an Injen exhaust on a 350Z, it's freakin loud. I think that it has more to do with the Injen exhaust than the cats though. The tone is very good however.

I have that Crawfords, I'm happy with them except for the mentioned rattle issue.
 
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Old Jun 29, 2005 | 03:51 PM
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Originally Posted by tylers600rr
ahhh thats alot more reasonable!! Are they just as good? They dont look very good but if they have the good ferrari/mustang sound that everyone talked about with the crawfords then I might be sold on these!!
I have no experience with the Crawford's as I followed the same logic and bought the Kinetix. I can't tell you how much I regret it. The build quality is truly horrible. You could buy the "Universal" cats they use from Carsound, take them to your local Muffler shop, and have ones custom made for cheaper, and they would actually fit. Granted, the Crawford's have some fitment issues also, but even after pounding dents in the underbody for clearance, the mid-section of my OEM exhaust now scrapes coming up my driveway, no matter how I approach it.

As for the sound, again, I can't compare directly, so I'll just give my opinion vs. my expectation. With the windows up, sounds more aggressive as expected. Under hard acceleration, it gets much louder, but stays rather smooth . With the windows down, I actually get a little embarassed when I hear more what it really sounds like. Under any throttle condition, it sounds more whiny as opposed to throaty or exotic (Think Honda CRX with PepBoys exhaust). Occasionally I'll even hear a little "Bap-bap-bap" under decelleration. Note that I also have the MD 3/8" plenum spacer and Z-tube with K&N drop-in which factor into the sound.
Performance change is noticeable, depending on how you drive, and I expect is similar to Crawford. I notice the loss of low-end power more often than the increased high-end, such is the nature of driving around town. When I really get on it and the engine spools up a bit, I can definitely feel it pull harder. At highway speed, the car just seems to breathe easier and things are very smooth. I also get slightly but noticeably better mileage.
In truth, I don't hate them enough to go to the trouble of getting under there again to pull them off, plus whatever money I could get back would still leave a bit to upgrade to Crawford. Money is always the main issue with people making this decision. In this case, I beleive you do actually get what you pay for. What you save between the two may be worth it for some, but it wasn't for me. Also, it took me 3 days of calling every hour to finally get someone to answer the phone to tell me there was a "Production delay." Doug at Crawford seems to be much more customer oriented.
 
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