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Old 06-02-2005, 04:05 PM   #1 (permalink)
Jeff (Atheyg)
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Default K&N makes a filter for the

K&N makes a filter for the carb Boxers as well, lets see 5% gain of 360hp would be almost 18hp not bad for the same price as a factory filter.

But seriously any opinions on them especially for the carb cars?
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Old 06-03-2005, 04:58 AM   #2 (permalink)
Ted (Vinorosso)
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Default Jeff, I had them on my inje

Jeff,

I had them on my injected car when I bought it and removed them immediately. They had warped such that they were allowing air past the filter and directly into the airbox. Besides that, I would have removed them anyway as I have read that they do not trap as many particulates as a regular filter. The added hp comes with a cost being extra abrasives in the combustion chamber. It makes sense to me, since their claim to fame is increased airflow, which can only mean less filtering.
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Old 06-03-2005, 04:06 PM   #3 (permalink)
dave handa (Davehanda)
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Default I used one on my carb 308, but

I used one on my carb 308, but required a jetting change (richer main jets) as it was found to be rather lean. Stock 308's are lean to begin with, the extra air flow didn't help matters.
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Old 06-03-2005, 05:03 PM   #4 (permalink)
JRV (Jrv)
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Default and definately do not use them

and definately do not use them on 348's and newer as they can cause serious problems with the MAF Sensors!!!!
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Old 06-03-2005, 06:48 PM   #5 (permalink)
Grant Gilmour (Grantgilmour)
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Default I use them on my '79 boxer

I use them on my '79 boxer and am happy with them. Having said that I don't live in an area that has very much dust. I think for dry dusty areas the paper filter might be a better choice.
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