XKR Airfilter
#21
I agree. This particular subject brings out the most passionate arguing on both sides of the issue. I used one of these on my last car for 14 years and have has one on the Jaguar for 6+ years and never had any problems. Granted I was realistic in not expecting any appreciable performance difference one way or the other and I went to reasonable lengths to keep the filter clean and not over-oil it.
Doug
Doug
#22
Guys, I have around 2000 customers using my diagnostic equipment and there is a significant correlation between those reporting low MAF readings and those using oiled filters. I am talking in the range of 5 to 20% lower than expected.
A couple of points to note are that the ECU on older cars will probably not throw a code till the MAF is reading more than 50% lower then expected. It would seem that the MAF signal into the control of the engine is a weak one so you may have no clue that it is reading low.
Is there a consequence to the MAF reading low? It is clear that a butt dyno will not tell you it is low and maybe the engine will still be putting out the same power despite the incorrect MAF reading?
So I feel there is a relation but that the consequences are minimal, even so I decided to stick with paper.
Those who are running with oiled filters with a stock set up, it would be good to know what your peak MAF values are at WOT, max RPM.
That way we could see if there was a relation on our JAGs, all my experience so far has been on VW Audi group cars.
A couple of points to note are that the ECU on older cars will probably not throw a code till the MAF is reading more than 50% lower then expected. It would seem that the MAF signal into the control of the engine is a weak one so you may have no clue that it is reading low.
Is there a consequence to the MAF reading low? It is clear that a butt dyno will not tell you it is low and maybe the engine will still be putting out the same power despite the incorrect MAF reading?
So I feel there is a relation but that the consequences are minimal, even so I decided to stick with paper.
Those who are running with oiled filters with a stock set up, it would be good to know what your peak MAF values are at WOT, max RPM.
That way we could see if there was a relation on our JAGs, all my experience so far has been on VW Audi group cars.
#23
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Doug
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