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Safe to remove air pump with this exhaust setup?

Old 05-04-07, 03:27 PM
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Question Safe to remove air pump with this exhaust setup?

I'm wanting to remove my air pump for a number of reasons. Currently I have:

Random Technology 4" high-flow metal matrix pre-cat (custom welded into a pettit racing down pipe)
Pettit Racing high-flow main cat
Pettit Racing (Racing Beat) 3" Stainless exhaust (dual tips)

Now, I know you shouldn't remove the air pump unless the main cat is removed/replaced, but since I have the Random Tech high-flow pre-cat and also the Pettit high-flow main cat, I'm wondering if it would be OK to remove the smog pump.

Thoughts?

Last edited by theorie; 05-04-07 at 03:47 PM.
Old 05-04-07, 03:54 PM
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I'd probably ask Pettit if their high flow cat requires an air pump. The metal one from Random does not (i'm running that as a main cat). I know that Nick at N-Tech said that his would be fine w/o the air pump. Others might be different.
Old 05-04-07, 04:28 PM
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just talked to pettit on the phone:

they said their high-flow cat does not require the air pump, but keeping it will extend the life of the cat. since i plan on replacing it with a resonated mid-pipe in the future, i guess i'll be removing the air-pump next week.
Old 06-26-07, 09:32 AM
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random technology metal matrix catalytic converters

Does anyone know some place that custom welds the Random Metal cats into a midpipe or downpipe for a guy or that sells them premade? Way cheaper than Knightsports.
Old 06-26-07, 09:36 AM
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not sure, the previous owner had this one installed. i'm sure you could get any local exhaust/muffler shop to do it.

i actually want to sell mine and go with a straight downpipe. we don't have emissions here in FL so i don't really need to worry about having any sort of pre-cat. i'm sure it only has a couple thousand miles on it. my car just hit 30k original miles and the previous owner said he only recently had the exhaust system done.
Old 06-26-07, 11:59 AM
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Originally Posted by theorie
I'm wanting to remove my air pump for a number of reasons. Currently I have:

Random Technology 4" high-flow metal matrix pre-cat (custom welded into a pettit racing down pipe)
Pettit Racing high-flow main cat
Pettit Racing (Racing Beat) 3" Stainless exhaust (dual tips)

Now, I know you shouldn't remove the air pump unless the main cat is removed/replaced, but since I have the Random Tech high-flow pre-cat and also the Pettit high-flow main cat, I'm wondering if it would be OK to remove the smog pump.

Thoughts?
I had never even thought of placing one as a precat. If one did and used it for the main also you might have pretty clean emissions. Did you ever notice any boost creep or spikes?
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