LegendsRacer - Legends & Bandolero Racing Forum

LEGENDS => Engine Care & Tuning => Topic started by: ZForceRacing01 on June 10, 2015, 02:57:55 am

Title: K&N Vs Foam, Borla exahust vs stock. Either of these worth the Money?
Post by: ZForceRacing01 on June 10, 2015, 02:57:55 am

Keep in mind I race asphalt. Has anyone looked at a dyno comparison for these two item?

I have the foam air cleaner and I think it is time for a new one. The Borla exhuast will be a winter upgrade if its worth my time.

Title: Re: K&N Vs Foam, Borla exahust vs stock. Either of these worth the Money?
Post by: knoxracing on June 10, 2015, 11:11:02 am

The foam air cleaners are fine, the only problem is that they retain fuel if you have an issue. A misfire can lead to a carb. fire, we have seen this but it is rare. The Borla exhaust is not a big deal as they are all produced over seas now.

Title: Re: K&N Vs Foam, Borla exahust vs stock. Either of these worth the Money?
Post by: legends13 on June 29, 2015, 08:16:11 pm

I have always heard the same thing about the filters, but The only fire I have ever had was with k&n filters. I have run foam filters for years and never had an issue.

Title: Re: K&N Vs Foam, Borla exahust vs stock. Either of these worth the Money?
Post by: s10custom on July 01, 2015, 07:49:05 pm

I was told that the foam filters are little better for low RPM/torque situation but even out at top speed. also, was told that the stock pipes with the Borla muffler was the way to go.

Robert

Title: Re: K&N Vs Foam, Borla exahust vs stock. Either of these worth the Money?
Post by: racerrad8 on July 03, 2015, 02:58:57 pm

Foam is better hands down. The fuel mist from the camshaft timing over lap flushes the oil from the single layer filter media of K&N & similar filters which makes them basically useless.

The RPM dual foam filters are even better then the 600 filters as they are only a single foam element.

Here is a set of oval track carbs I rebuilt last week and he swore by the K&N filters. After I showed him his carbs, he is now using the RPM dual pod filters.

(http://i1215.photobucket.com/albums/cc517/racerrad8/001_zpszddoe3by.jpg) (http://s1215.photobucket.com/user/racerrad8/media/001_zpszddoe3by.jpg.html)
(http://i1215.photobucket.com/albums/cc517/racerrad8/002_zpstwocqsph.jpg) (http://s1215.photobucket.com/user/racerrad8/media/002_zpstwocqsph.jpg.html)
(http://i1215.photobucket.com/albums/cc517/racerrad8/003_zpsckbkmnxr.jpg) (http://s1215.photobucket.com/user/racerrad8/media/003_zpsckbkmnxr.jpg.html)
(http://i1215.photobucket.com/albums/cc517/racerrad8/004_zpswjx0jhfx.jpg) (http://s1215.photobucket.com/user/racerrad8/media/004_zpswjx0jhfx.jpg.html)


Randy - RPM

Title: Re: K&N Vs Foam, Borla exahust vs stock. Either of these worth the Money?
Post by: ZForceRacing01 on July 08, 2015, 04:29:44 am

Thanks for the info Randy.