#73370 - 07/10/03 12:21 AM
K&N airfilters
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Junior Member
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Registered: 02/27/03
Posts: 13
Loc: Alabama
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Has anyone replaced their factory airfilters with the K&N airfilters? I was just curious to know if anyone noticed any benefical results?? I was thinking about buying one and just wanted to know if it was worth it.
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#73371 - 07/10/03 12:46 AM
Re: K&N airfilters
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Member
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Registered: 06/12/03
Posts: 123
Loc: se michigan
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I have one and I didn't notice any difference from it. Of course that does not mean there weren't any gains but you just can't feel an extra 5 hp, no matter what anyone says.
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#73372 - 07/10/03 11:23 PM
Re: K&N airfilters
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Junior Member
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Registered: 02/27/03
Posts: 13
Loc: Alabama
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I had a K&N filter in a Honda Civic I bought before this Grand PRix. I couldn't really tell the difference in it but i thought maybe it would be differnet with a larger engine. Thanks for the reply Jeff3800
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#73373 - 07/12/03 12:28 AM
Re: K&N airfilters
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Member
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Registered: 05/23/03
Posts: 8078
Loc: Austin, TX
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I just replaced mine with a K&N. I did notice a slight difference, but I do agree with Jeff. It's real hard to notice a 5hp increase.
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Bobby Died 5/1/08, resurrected 5/15/08 ASCD SD hood, 17" Bullitts, Overkill PCM, 3.4" Pulley, NGK TR55IX, K&N 9" cone filter, JimmyC D/P, U-bend removed, Flowmaster 40 series, Hooker big bore tips with resonators, S/B brake lines, drilled/slot rotors, GMPP handling kit, KYB struts, F&R strut supports, HID's, LED's, 2.5" Air Dam, red GTP overlays on custom badges, white rear insert.
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#73374 - 07/14/03 01:54 PM
Re: K&N airfilters
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Member
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Registered: 05/23/03
Posts: 8078
Loc: Austin, TX
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After having the K&N filter in for a couple of days, I can truly tell a difference in gas mileage. My mileage has increased 5 mile per gallon. I was getting the documented 18/28, now I'm getting 23/33. Well worth the $50 I spent on it.
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Bobby Died 5/1/08, resurrected 5/15/08 ASCD SD hood, 17" Bullitts, Overkill PCM, 3.4" Pulley, NGK TR55IX, K&N 9" cone filter, JimmyC D/P, U-bend removed, Flowmaster 40 series, Hooker big bore tips with resonators, S/B brake lines, drilled/slot rotors, GMPP handling kit, KYB struts, F&R strut supports, HID's, LED's, 2.5" Air Dam, red GTP overlays on custom badges, white rear insert.
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#73375 - 07/15/03 03:56 PM
Re: K&N airfilters
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Member
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Registered: 05/23/03
Posts: 59
Loc: CA
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Originally posted by Austin GTP: After having the K&N filter in for a couple of days, I can truly tell a difference in gas mileage. My mileage has increased 5 mile per gallon. I was getting the documented 18/28, now I'm getting 23/33. Well worth the $50 I spent on it. Interesting... How many tanks of fuel did you go through to see the 5 MPG increase (in a couple of days)? Did you just drive it lighter and look at the MPG display on the Driver information center? You may want to actually drive over a few of tankfulls to start to see an increase. I am curious if you ran the FTP 25 and HWFE chassis dyno tests that the manufacturers have to use to publish the emission and fuel economy numbers. The 5 HP is tough to see even on an engine dyno (run to run variability will be close to +- a couple of ponies in a environmentally controlled dyno cell). If you do see these increases, I would suggest you start working for the sales department at K&N :rolleyes:
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#73376 - 07/15/03 04:35 PM
Re: K&N airfilters
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Member
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Registered: 05/23/03
Posts: 8078
Loc: Austin, TX
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Brad, I did not buy my GTP to watch it sit in the garage and go out and wipe the dust off every 2 hours. I buy a car to drive. I have put almost 8K miles on my GTP since I bought it 2 months ago. In those couple of days, it was actually three days, I drove alot around town which I did use a full take of gas. I also went out of town, which again, I used a full take for the 'round trip. I am simply sharing the information that I have noticed since replacing my stock paper filter with a K&N. If you're not happy with my personal findings, nobody is making you read my postings. Bobby "AustinGTP"
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Bobby Died 5/1/08, resurrected 5/15/08 ASCD SD hood, 17" Bullitts, Overkill PCM, 3.4" Pulley, NGK TR55IX, K&N 9" cone filter, JimmyC D/P, U-bend removed, Flowmaster 40 series, Hooker big bore tips with resonators, S/B brake lines, drilled/slot rotors, GMPP handling kit, KYB struts, F&R strut supports, HID's, LED's, 2.5" Air Dam, red GTP overlays on custom badges, white rear insert.
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#73377 - 07/15/03 09:08 PM
Re: K&N airfilters
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Member
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Registered: 03/26/03
Posts: 2481
Loc: Franklin, MA
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What is the average mileage that you should replace the air filter? I bought my GP at 47k and there is now 71k. Knowing the previous owner, I'm pretty sure it has never been done and I'm starting to see a substantial decrease in my mileage. Thanks Everyone!
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#73378 - 07/16/03 06:34 AM
Re: K&N airfilters
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Junior Member
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Registered: 07/12/03
Posts: 27
Loc: New Jersey, U.S.A.
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err...you put on 24k since you had the car...it's over due now...try to stick at the 10k mark to replace it...I check mine often and when it get's dirty I change it. I got my car in Feb. and put on 8k since then and had to replace the filter...that superchager suck's that air in...lol
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Paul IZE (aka ICEMAN USA) 99 2 Door Coupe Silvermist GTP, 3.4,180 SLP Hyperstat, MSP CAI, R/T D/P w/Cat, SLP PowerFlo cat-back exhaust 14.650@94.18---STOCK 13.653@100.10--With MOD's
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