Anyone running KampN filters on their Boxers

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?

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.

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.

and definately do not use them on 348's and newer as they can cause serious problems with the MAF Sensors!!!!

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.