LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Cutout, CAI, or 3" pipe. What would you do?

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Old 03-17-2003, 09:37 PM
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Question Cutout, CAI, or 3" pipe. What would you do?

I have an 80 series Flowmaster and a K&N air filter. I have my stock, rectangle tips coming off the Flowmaster. I was told I should get a 3" pipe from the cat to the muffler for better flow. What would you get for performance?

1) Cutout (if so, will I pass inspection in TX?)

2) K&N CAI (if so, it replaces the air filter right?)

3) 3" pipe from cat to muffler (if so, will it be louder?)
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Old 03-17-2003, 09:39 PM
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start with 1 & 2. I recently passed our IL inspection with the cut out closed. They didnt really give a 'visual' like theyre supposed to, but, from what I understand they cant really do anything if its closed.
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Old 03-17-2003, 09:57 PM
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If your going to get a catback. I'd hold off on the cutout and stick with the CAI.
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Old 03-17-2003, 10:05 PM
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I live in Houston and I have a cutout. Passed inspection twice so far with no questions. Actually, with the cutout closed it is really hard to notice what it is.

I personally prefer the Moroso CAI over the K&N.

I also installed a 3" pipe, but the stock pipe is already almost 3". I couldnt tell any difference with this install...
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Old 03-17-2003, 10:10 PM
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hey, tstewart9000... you have an email address i could catch you at?
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Old 03-17-2003, 10:17 PM
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So where in Houston can I buy the Moroso CAI, and where could I get a cutout done?

My email is tstewart9000@hotmail.com
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Old 03-17-2003, 10:29 PM
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you've got an email regarding the above question...


actually, make that 2 emails.
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Old 03-17-2003, 10:30 PM
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I too agree on the Moroso over the K&N. Looks better too. As for the cut-out, what can they say if it is closed? Also you live in Houston, there are over 1000 shops on the south side that wouldnt even think twice about it.
I gained 15 RWHP and 19 RWTQ going with a Flowmaster Y-Collector and 3" Exhaust pipe to the cut-out from the headers. If you dont have headers, you wont see much of a gian. Just stick with the 3" cut-out. I beleived I gained 20 RWHP and 21 RWTQ with the Moroso, 3 " Cut-out and Mezeire W.P.

Summit Racing 3" Cut-out $26.97 part number SUM-G4822
Moroso C.A.I. $189.95 part number MOR-65845
1-800-233-3030
$7.95 Handling Fee, and free shipping.
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Old 03-17-2003, 10:33 PM
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What are your goals with your car? If it is 1/4 mile racing click on the TA in my sig and follow lead. Heading in the 12.6xx's with bolt-ons still.
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Old 03-17-2003, 10:38 PM
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This is my set-up.

Headers to a ORP to a cut-out to a custom straight pipes exhaust.

I swap the ORP and the cat when i take my emmisions...

The car is obxously loud however...
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Old 03-17-2003, 10:40 PM
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Cut out. Eventhough I don't have one..................... YET!
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Old 03-17-2003, 10:43 PM
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My goals are more HP and better flow. I think I will look into a CAI first. Then possibly a cutout.

Do tips make any difference in sound or performance, or simply looks? I still have the rectangles for the stock look.
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Old 03-17-2003, 10:46 PM
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My fav muffler shop in Houston is on 1960 and Kuykendayl (however the hell you spell it.) Called muffler something. Family owned and has been around for YEARS....nice guys also and wont screw you around...

Cant remember the name though....I think I ordered my parts from Summit Racing
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