Hardly Brian, You bring it up and I simply say ok lets compare dynos from 10 years to now. WE discredited the BS claims of 28 HP and found 7-10 overall was typical and 13 peak. Not only myself but Bene’t also confirmed this. So at the end of the day it did have merit along with the ability to open the engine bay.

This discussion never ends. I find it rather amusing we have proved this time and time again with actual dynos yet the crusade lives on.

You should call up Bene’t and tell him that he too is full of it...LOL. I want to be on three way when you do that!;)

Jay, you need to adjust the bracket on the right. Before you do this loosen up the 2 10mm bolts and move the box around until it sits flush or the way you want it. Once in place lock the bracket down then evenly tighten the 2 10mm bolts in place and you should be good to go.

The oil does not actually kill the sensor it only coats the film not allowing it to read the air as it passes it. CRC makes a MAF cleaner that can be sprayed over the film or sensor, restoring it to normal use. Prior to this we used tuner cleaner for old TVs. Leaves no residue and is designed to soften and remove solder flux and corrosion. People end up with issues when they use compressed air thus blowing the film off the sensor and rendering it dead. Even standing 4 feet away throwing a air nozzle off the air compressor will kill it. The CRC works almost every time.

Anything that cleans up the engine bay is a good thing.

Glad to see we're on the same page concerning the 28HP claim made by K&N.
My dyno runs were made using your basic 300HP 930 engine. I could see an air filter becoming restrictive on a high HP engine but was not surprised when no significant difference showed up on the more typical stockish configuration. It's fairly difficult to get distinctly reproducible results at the 5HP or so range on an air cooled turbo engine. Lots of runs in lots of different temperatures. In my mind if I have to look that hard for it it isn't significant.

Did you ever compare the PowerFlow to the EagleDay unit?

I lost touch with Michael when I left IL a few years back. Interesting fellow.

Have you tried that MAF cleaner on the 996/7s? Boy there would be a few folks POed if the units they had replaced could have been cleaned.

Ah yes, that is how we left this discussion many years ago...not that is was a POS rather it had gains. Additionally it is my conclusion that the box it the difference, not the filter.

Are you talking about the little filter the size of a hand? Yes, I will not use them.

This is where I found out that it actually works. Yes, on both the 996 and 997 NA and TT.

The local dealership reported to the owners that the oil had actually burned/destroyed the filiments on the cars affected. I think I'll stay away from that one ...

A lot of the dealers we sell to would do it free and warranty the time to clean it. Some are actually doing it as part of the service.

The oil doesn't eat the film it only coats it, only excessive air and voltage spikes kills them.

[QUOTE=DonE;3789943]I've been running a KN filter on mine for the last seven years. I've had the engine apart three times and have not seen any damage due to dirt being sucked in past the filter (including the turbo compressor blades). On the other hand, I maintain my filter at each oil change. I also have an EFI motor with a wire air intake sensor and don't think twice about oil getting on it - it would have to travel through the turbo and intercooler first which is highly unlikely.

I have also seen "performance shops" fab EFI intakes that place a KN filter in the rear fender well (behind the tire!), subject to road dirt and rain water. Although I have not had a problem with a KN filter, I would never subject it to that kind of treatment.

The high HP general aviation aircraft I work on don't use filters, however they are still approved for grass strips. If we think we will be at a lot of grass strips (air show work), we will install a KN type filter - and this is on a two-stage supercharged $125,000 motor.


Climate has a huge thing to do with the filters. all of the light aircraft I dealt with were running the same kind of RPM out 911 engines run and of the several hundred I have rebuilt in my past life 25% of them failed from foreign matter injested from the K&N filter now these were 2 and 4 cylinder boxer engine's and a good portion turbocharged (think unmanned predetor)

Earthbound vehicles in south and western states have a uniquely abrasive environment on their streets and running without adequate air filtration will cause noticeable engine wear in short order. More power to you if you have $2-3K to spend on P&Cs on a regular basis.
Regarding foam filters with oil, all are inadequate in this environment.
Say what you will about the OEs, they have armys of really talented well paid engineers and this one is a no brainer to them.

Exactly my point as well

To bring this thread full circle, we should also discuss the best engine oil to use.....

M1 V-Twin!!!SmileWavy

Or the merrits of the cool collar, ha! http://forums.pelicanparts.com/support/smileys/pyth.gif

On a serious note, it would be interesting to hear from folks who have personally put 100,000+ miles on a 930 and how they maintained it. Probably a small pool given the short time most folks own a single car.

Like the oil discussion, we'll never know. If KN had a 25% failure rate, they would have been sued out of existence. That's a big number for such a successful company.

As for the south and the west being more abrasive, I didn't know anyone would do such a study much less pay attention to it. I guess cinders and sand used in the north for traction in the winter doesn't count. I guess it's a good thing P&C's are plentiful around here.

OK, whatever. I use a KN filter cause I have to - no one makes a paper element for my application - not that I would use one. I also have a foam cover for it too - because they work - or I should say it works for me.

A couple of weeks ago, I showed up at my voting precinct to vote in the primary. At the time, I was the only one in line until these 4 very polished, mature ladies walked in talking about voting for Obama. One said to the person behind the counter, "I guess we shouldn't be talking about who we're voting for". Another said, "well, he's got my vote". With that, the first lady turned back to the official and asked, "what ticket is Obama on?". I wish more people had the passion we have about oil and filters, but with the important things in life.

I can assure you ALL filter companies have numerous law suits settled and pending.
Regarding any study of abrasive environment, that is a given in the halls of the large OE engineering departments. It's based on years of warranty parts inspections. Warranty amounts to millions $ and are tracked by application and region.
Regarding turbo engines, a close inspection of the compressor blade leading edge will give you a complete picture what to expect downstream.
I wouldn't spend $1K for a turbo, $10-20K for an engine then place a foam/oil filter upstream.