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Automotive Science or Voodoo?

113 messages,  Last post on Oct 11, 2006 at 7:17 AM

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What is this discussion about? Car Safety, Exterior, Fuel System, Performance Mods, Auto Body, Engine, Fuel System, Oil, Paint, Transmission, Alternative Fuels, Diesel, Hybrid Cars, Fuel Efficiency (MPG), Car Warranties, Coupe, Convertible, Hatchback, Truck, Sedan, Wagon, SUV, Van

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#64 of 113 pgue not hogue by Mr_Shiftright HOST Mar 24, 2005 (1:23 pm)
Close, isell, that was pretty good, but it's the Pogue carburetor.   Here's a good explanation why it didn't, doesn't and never will work:   http://www.mikebrownsolutions.com/fish3.htm
#65 of 113 pgue not hogue by Mr_Shiftright HOST Mar 24, 2005 (1:24 pm)
Close, isell, that was pretty good, but it's the Pogue carburetor.   Here's a good explanation why it didn't, doesn't and never will work:   http://www.mikebrownsolutions.com/fish3.htm
#66 of 113 Re: K&N [john500] by yukon2005 Mar 28, 2005 (10:43 am)
Replying to: john500 (Mar 11, 2005 2:38 pm) I agree with the decrease in gas mileage when using K&N. I have it on my 2005 Yukon and it was came 16.5 to currently 16.2 on a K&N filter. I do a get slightly better acceration. I am not running an 89 octane, hopefully to benefit on acceleration from the K&N.
#67 of 113 That seems by isellhondas Mar 28, 2005 (3:08 pm)
Too close to really make any kind of a determination. The difference of .3 MPG could have been caused by anything I would think.
#68 of 113 Re: K&N Air Filters [Mr_Shiftright] by gagrice Apr 23, 2005 (7:20 am)
Replying to: Mr_Shiftright (Mar 05, 2005 9:53 pm) I've tried K&Ns three times on three different cars, and was not able to measure any gas mileage improvement on any of the cars.   I had a K&N installed on my Suburban. No difference in mileage. I was a bit disappointed as it was noticeably noisier.
#69 of 113 air/fuel by Mr_Shiftright HOST Apr 23, 2005 (7:49 am)
It might be possible, if a person's OEM filter were all clogged up, or if the design of the original filter housing were abysmally bad and this were changed ALONG WITH the K&N, that the K&N could cause a little leanness and give a slight boost in mileage (probably at the expense of power), but that's about it.   Adding air alone without adding fuel isn't going to do very much, nor is adding fuel without adding air (which is what chips do, add fuel enrichment to the OEM map which tends to favor leanness). You want POWER you are going to have to maintain about a 13:1 ratio of air/fuel and if you upset this, you lose. You can run leaner for fuel mileage but you'll run hotter and have less power...you can add richness and maybe get a few HP out of that at certain power band positions.
#70 of 113 K&N==hype by stevewa Apr 23, 2005 (9:48 pm)
I would not use any oiled filter in a modern vehicle that has a MAF or MAP sensor in the intake path. Even a throttle body gets dirty enough by itself without help. The purpose of an air filter is to CLEAN the air, not to ADD OIL to it.
#71 of 113 Totally depends - by driftracer Apr 24, 2005 (5:29 am)
those MAF horror stories are generated by people from the "if a little bit's good, a whole lot's better" school of thought.   If you clean it regularly, like every third oil change with mine, and oil lightly like you're supposed to, it's not remotely an issue. If you use half a can on the cool red oil, you'll have problems, and you (non-specific person, not directed at anyone) deserve to, since you can't read directions.
#72 of 113 drift by Mr_Shiftright HOST Apr 24, 2005 (8:11 am)
I tend to agree, it's a problem of "mis-use" but still, putting a product that needs careful reading of directions, into the hands of the general public, is risky. Corvairs didn't flip unless you underinflated the tires, and a few people did just that and oh, man, the flak was considerable and ruined the product.   For people who are racing, they are used to risks to machines and their physical bodies. They expect an occasional disaster and are usually equipped to deal with it.   But many folks unfortunately embrace these oiled filters like they were miracle drugs or something.   I've used K&Ns, (but not any more) and really, if you follow directions explicitly, it's a bit tedious to oil and clean them "by the book". I would imagine a lot of folks don't have the patience.
#73 of 113 I agree - by driftracer Apr 24, 2005 (8:58 am)
if someone has to put too much thought into something new, and analayze it to death, they probably shouldn't be buying the product.

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