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Old 08-13-2007, 11:27 PM   #1
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Default Stupid Hi-flo cat question

I'm going to get a new hi-flow cat just because I want one.

I went to www.car-sound.com to see what to get. I looked at the universal one since those are hi-flow. Car-sound recommends a 94806 model so I double checked with BC and it mentions 94806 but also talks about it being slightly more restricted than the 91000 model.

Is the 94806 the one I should get?
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Old 08-13-2007, 11:35 PM   #2
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i have the magneflow high flow stainless steel one 54306 its 2 1/2 inches in and out about half the size of the stock one and no codes
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Old 08-13-2007, 11:35 PM   #3
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I'd go with the 91000 verison. I bought the 3"in & 3" out one from www.Hoganperformance.com
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Old 08-14-2007, 01:18 AM   #4
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It should be noted that I really don't have any major mods on the car at this moment. The mods I have is the gutted airbox with KN and fake PEMS (probably will get true PEMS) and the INTENSE Level 1 pkg for the L36 as the last mod I'll do
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Old 08-14-2007, 02:20 AM   #5
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You planning on doing a rear O2 sensor delete (or spoof), or will you be retaining the rear O2?

How will you be installing the cat? (DIY, clamps, weld)?
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Old 08-14-2007, 08:27 AM   #6
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In my experience the S2 exhaust has the O2 bung far enough back that you can swap the cat and still have 4 or more inches of piping before the O2.

Not sure which one you are looking at, as I didn't look it up... but please keep in mind you do not need one with the O2 built into it.
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Old 08-14-2007, 09:06 AM   #7
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Quote:
Originally Posted by fuelforthesoul1999
It should be noted that I really don't have any major mods on the car at this moment. The mods I have is the gutted airbox with KN and fake PEMS (probably will get true PEMS) and the INTENSE Level 1 pkg for the L36 as the last mod I'll do
Last mod
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Old 08-14-2007, 09:49 AM   #8
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Quote:
Originally Posted by McGrath
I'd go with the 91000 verison. I bought the 3"in & 3" out one from www.Hoganperformance.com
Thats the same one I went with when it was time to replace the CAT on the General. I did not lose any low end grunt either and my car was basically set up the same as yours Cody.
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Old 08-14-2007, 11:16 AM   #9
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Why did you think that was a stupid question, Cody? Sure, there'* been plenty of hi-flow CAT discussions, but you did do your research first, right?
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Old 08-14-2007, 11:28 AM   #10
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Quote:
Originally Posted by lash
Why did you think that was a stupid question, Cody? Sure, there'* been plenty of hi-flow CAT discussions, but you did do your research first, right?
Yes, I did my research but there were many conflicting ideas to the point where I got confused. In one particular thread, I can't remember it, Ben was concerned about the efficency of the 91000 model with the weight limit being 4500 and possiblity of getting it too hot. Yet car-sound recommneds a 94806. Some people got completely different cats.

I just wasn't sure which one is best
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