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When is Air Sent to the Cat?

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Old 08-06-03, 09:40 PM
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When is Air Sent to the Cat?

Hey all, I am was talking to some ppl on the forum about just running the airpump to the cat all the time, but I was told that it would burn up the cat really fast. So I would like to know when is air directed to the cat convertor.

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-Justin
Old 08-06-03, 10:00 PM
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in 5th gear at cruise...
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Old 08-06-03, 10:14 PM
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between idle and 2500rpms it goe into the exhaust ports and above that it mostly gets vented to the atmophere, except 5th gear cruise where it goes to the cat

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Old 08-07-03, 01:21 AM
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Then do you even really need a airpump to go to a cat?
Old 08-07-03, 02:05 AM
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yes, without the airpump you would fail emissions.

I have removed all my emissions, so when I have to pass I just run a line straihgt from the airpump the lower split air pipe.
Old 08-07-03, 02:27 AM
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Originally posted by j200pruf
Then do you even really need a airpump to go to a cat?
I really wonder, what would happen if you never go into 5th?
Old 08-07-03, 02:35 AM
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thats what I have been thinking of doing gsracer. But I would also switch to the smaller Japanese Market Airpump (at least a few ppl told me they were smaller).
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