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Old 10-21-2007, 12:26 AM   #1
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Default Good Cold Air For Series I

I just got done building a new exhaust system on my 94 SSE I ran new 2 1/2" pipe all the way to a Dynomax muffler, with dual outlets, no cat.
Sounds great, now im looking to upgrade my intake... Does anyone know of a good Cold Air Intake for the series 1? Or can I make a series 2 CAI work?

Thanks..
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Old 10-21-2007, 01:25 AM   #2
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A Series 2 FWI is too big for your intake/TB. You won't have laminar flow and will lose performance.

A custom 3" CAI is best for your car.

I suggest putting your cat back on. Not only is it illegal in all 50 states to run without it, you lost low-end torque and couldn't even begin to outflow your exhaust to begin with. If you still have it, you won't regret putting it back in. If you don't, get a $60 high-flow cat and have it installed.

More info on intake sizes:

http://www.bonnevilleclub.com/forum/...hlight=laminar
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Old 10-21-2007, 03:51 AM   #3
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To keep this off-topic for one more post:

I'll agree with Bill on the topic of the cat. I bought my car straight-piped, and threw a cat on there after a few weeks. I do believe it has more power in the low-end now. It'* a little bit less raspy, too.

You can get one for under $50 if you watch ebay. I think mine was $47, free shipping.

Not sure if I'd put a stock cat back on (depends on how many miles are on it, I guess), but I'd at least put on a Magnaflow.

Welcome to the Club, btw.
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Old 10-21-2007, 06:16 PM   #4
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Where I live here in Walworth County We dont have to pass emisions.
I dont think Ive lost ne power. Car feels the same through the whole band.
When I went to build the system, I noticed the cat was cracked, thats why I took it off. I plan on getting a high flow cat from summit or something...

Back to the topic. Has anyone had one custom build for the series 1, or have any prices on getting that done?


Quote:
Originally Posted by willwren
A Series 2 FWI is too big for your intake/TB. You won't have laminar flow and will lose performance.

A custom 3" CAI is best for your car.

I suggest putting your cat back on. Not only is it illegal in all 50 states to run without it, you lost low-end torque and couldn't even begin to outflow your exhaust to begin with. If you still have it, you won't regret putting it back in. If you don't, get a $60 high-flow cat and have it installed.

More info on intake sizes:

http://www.bonnevilleclub.com/forum/...hlight=laminar
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Old 10-21-2007, 10:57 PM   #5
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All 50 states require catalytic converters regardless of emissions testing or not. It'* a Federal Law. In fact, I can get $250 for turning you in (or anyone else like a mechanic, tire shop, etc) that notices it and busts you.

I gaurantee you will regain some lost low-end if you reinstall the cat. We actually know these motors and exhaust quite well.

YOU will have to custom build your own CAI. Nobody offers one. Many buy the 'rice' pipe at Autozone or Advanced autoparts, cut to fit, and use a QUALITY filter. You must fabricate your own heatshield, or stick with the stock airbox. Hot air will do you no favors.
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Old 10-21-2007, 11:21 PM   #6
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Yes, the intake pipe from AutoZone (forgot PN), lob off 3 Inches, then get the RX-4750 and build a heat shield around it. Some people use that silver insulation for the shield.
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Old 10-22-2007, 12:55 AM   #7
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Quote:
Originally Posted by Boreas
Yes, the intake pipe from AutoZone (forgot PN), lob off 3 Inches, then get the RX-4750 and build a heat shield around it. Some people use that silver insulation for the shield.
Yep, that'* the general idea. Any nice, gently bent aluminum pipe (of the correct diameter) will work. The idea is to get the filter as far away from the engine heat as possible.

If you use the IAT sensor hole in the RX-4750 filter, you might have to extend your IAT wire harness. That'* not too hard, if you've ever soldered and used heat-shrink tube. Then again, with an L27, it might be long enough.

You could make yourself a FWI, too yet. Either one would work.

It'* not really rocket science (well, pipe diameter aside). Common sense, experimentation, and a measuring tape will go a long ways.
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Old 10-22-2007, 09:05 AM   #8
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IAT harnesses on the S1 don't need to be extended to reach the filter. A FWI should only be done if he can find flexible tubing with a smooth inner wall in 3".
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Old 10-22-2007, 12:17 PM   #9
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Quote:
Originally Posted by willwren
A FWI should only be done if he can find flexible tubing with a smooth inner wall in 3".
Of course! No dryer duct. Goes without saying.
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Old 10-22-2007, 12:35 PM   #10
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This is pretty close to what you are going to want to do...

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Total cost of the box itself came to maybe 15 bucks. Cheap to build...but the build quality is way better than 15 bucks usually gets you. I'm still not done with it yet, as I have to figure out how to close off the backside.
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