K&N AIR FILTER

Has Anyone Every Installed A K&n Air Filter Kit On A Yukon
5.7liter If So Could You Tell A Difference In Power And Gas Millage And About Much Should I Expect To Pay For One.
99 Yukon Owner Thanks Rich.

I will tell you it will be the best thing you could do. You will notice a huge difference! You will be able to get one cheap for the 5.7 liter if it is the round one. If it is, you can also take the lid, and turn it upside down for even more airflow. If you are considering it, don't consider anymore-GO GET ONE you'll be glad you did!
Jay

Thanks!! for the info. jay i just ordered one today
can't wait to get it. By the way did you get better
gas millage?
Thanks Again
RICH.

I did indeed get better milage, and even better when the lid for the air filter is turned upside down!
I promise, you will see the difference right away!
Jay

I'm not a sales man for K&N.....

I got the K&N Filter for just under $50 and installed in in 5 mins on my 03 Yukon. A bit more noise which is fine with me, a bit better fuel milage [.3 MPG] but I also noticed a bit better acceleration and overall more power.

Just a bit. Nothing huge. YMMV and all that.

FWIW I always run K&N on all my vehicles, period. They work better than paper at stopping crap from going into the intake and pay for themselves easily compared to buying new paper elements all the time.

i have a 04 Yukon and was thinking on ordering the KN Filter, but then i found the KN cold Air Intake. Dont know if i should spend the extra money on the whole intake or just replace the filter. Any suggestions?

I swear by them too. I would certainly get the "cold air box" or series 77 style that replaces the accordian intake with the smooth metal tube style. There is definantly more noise under the hood (the roar of air acctually getting into your engine). I did several upgrades right off the bat on my 2004 Yukon 4.8 liter; all under 3000 miles, so I cant really tell an accurate mileage gain. However after now about 8600, I run full synthetic oil, Flowmaster 60 series muffler, gibson headers, and a 77 series K-n-N, I am geting (now that the motor has broke in) consistant 17.8 - 18.3 MPG in town and 22.1 on the last 60 mile highway trip I made at 72 MPH average.....so Im happy.

Another great way to help in town mileage if you run no faster that 45 MPH, run your truck in 3rd gear vs. Drive..... that helps the engine from always haveing to constanly shift and lag in a higher gear...easier on the transmission too.

I'm not a sales man for K&N.....

I got the K&N Filter for just under $50 and installed in in 5 mins on my 03 Yukon. A bit more noise which is fine with me, a bit better fuel milage [.3 MPG] but I also noticed a bit better acceleration and overall more power.

Just a bit. Nothing huge. YMMV and all that.

FWIW I always run K&N on all my vehicles, period. They work better than paper at stopping crap from going into the intake and pay for themselves easily compared to buying new paper elements all the time.

Where did you get the filter four that price? Are you just referring to the filter alone; that is after you have purchased the intake sytem?
Thanks

i put the K&N FIPK intake on my denali 6.0L and i love it. i can easily tell i have better pickup and the sound of it is awesome during acceleration, not to mention the better gas mileage i get.

I just ordered it up from NAPA. This is just the filter itself. Replaces the paper element. i am only getting 14.5 mpg so would really love to be getting better milage. Mine is an 03. headers & muffler gets you that increase? If you wouldn;t mind, can you give me specifics [part numbers, cost, installation etc notes] thanks!

I just ordered it up from NAPA. This is just the filter itself. Replaces the paper element. i am only getting 14.5 mpg so would really love to be getting better milage. Mine is an 03. headers & muffler gets you that increase? If you wouldn;t mind, can you give me specifics [part numbers, cost, installation etc notes] thanks!

What size engine do you have? I just filled up again tonight and show 17.7 MPG in town. I have a 4.8 in a 04 SLT Yukon. I bought the headers from a cataloge at about $400 and put them on myself with another buddy in my garage. The muffler is a Flowmaster 60 Which I bought on-line for around $90 after shipping. Had a shop put it on with crome tip for around $70. The K&N is a series 77 which I put on in about 20 minutes in my garage as well for about $200 I think. Im happy with the performance and mileage. I am going on another highway trip this thanksgiving holiday, so I will let you know what that is.

Remember that headers have always been "free horsepower" to any engine. A 1962 ford to a 2005 Sierra; -headers will ALWAYS give better performance and milage. Also remember that an engine is a big air pump -more air in( K&N), more air out (headers) is always good.

Didn't you have to reprogram your computer after putting the headers?


K&N's work great. I put one on my 96 Yukon after the first year and there was indeed a SOTP difference. My milage did not really improve until after I had about 50K. I now get about 18MPG on my 5.7ltr

Like Bevl Hvn, I just added the K&N filter primarily for better filtration & long-life. I noticed a bit more "umph" in acceleration, but not that much. Would like to swap the exhaust (headers on back), and reprogram computer, but funds are a bit scarce with 2 kids, and looking to by a house.

I have an '02 Yukon w/ 76K miles on it (5.3L). It was used mostly for state-to-state travel & my daily commute to work. Got this before I was married w/ children (ode to Al Bundy). My wife drives it now, and doesn't drive more than 10 miles a day.

I did indeed get better milage, and even better when the lid for the air filter is turned upside down!
I promise, you will see the difference right away!
Jay

What do you mean 'with the lid turned upside down'?

Does it still latch and is the filter exposed?

Can you post a picture?

I should have mentioned that it was already installed in my Yukon when I bought it. So I have no idea of before and after performance.

[QUOTE=Mr. Peabody]Didn't you have to reprogram your computer after putting the headers?


No. I just put the headers on and the performance was noticeable. The milage on the hghway on a recent trip was at 21.5 MPG as I recall. I had the exact written down somewhere. That was at an average speed of 75 MPH. I imagine it improves at around the 65 MPH range.


My 1911 Kimber is like my American Express; I never leave home without it.

Yeah. Uh-huh. And the South shall rise again, right?

[QUOTE=Mr. Peabody]Didn't you have to reprogram your computer after putting the headers?


No. I just put the headers on and the performance was noticeable. The milage on the hghway on a recent trip was at 21.5 MPG as I recall. I had the exact written down somewhere. That was at an average speed of 75 MPH. I imagine it improves at around the 65 MPH range.


My 1911 Kimber is like my American Express; I never leave home without it.

I'm certainly no expert but I just find that hard to believe. You just bolt on the headers & no reprograming is required and just like that...magic?


Are you sure??

Why would it need a re-program? I would think there would only be a small air/fuel ratio change that the computer would easily handle.

I've had K&N in my last two Vettes (with open lids) and a '99 5.3 Sierra. I liked the big sucking sound at WOT but I honestly didn't notice any performance improvement. The AC filters they replaced were always changed before they got dirty so maybe that made some difference. The big advantage to me is the efficiency of filtering and it's the last filter you buy so the 2005 Yukon will get one also.

I'm certainly no expert but I just find that hard to believe. You just bolt on the headers & no reprograming is required and just like that...magic?


Are you sure??




Ua, ya I'm sure.... I was there when we did it over a 12 pack of Sam Adams in my garage. we put them on. It worked. Amazing enough.

Hard to believe? -not me. I dont think its magic because Im not a magician. I just know what headers do. High school auto shop class 101 tells us all that headers are the single best thing one can do to ANY engine...its "free" horsepower and economy. no suprise, no rabbits from a hat. Its physics baby.

From what I understand on the GM generation 3 OBD nearly everything is "automatic". Its not simply a PROM style computer. In otherwords it continually "adjusts" fuel/air ratios. Much smarter and interactive than the older OBD II. So as we add/delete items from the engine and exhaust etc., it knows and adjusts. Kinda like the new oil change light. Its no longer a "dummy" light that simply gose off at 3000 miles. It actually "knows" when you should change the oil based on various conditions. If thats magic, then GM has hired Copperfield.

...hey maybe thats the "magic" you speak of? Im more amazed not by headers, but the fact that these new trucks do not have a fuel filter anymore. No longer can we change our filter every 12,000 miles. NO ONE can tell me why or how this can happen. The manual mentions nothing about a fuel filter anymore. Now thats magic!!

...Oh -will the south rise again? I hope not. I would hate to see NASCAR take over baseball as the national pastime!

...hey maybe thats the "magic" you speak of? Im more amazed not by headers, but the fact that these new trucks do not have a fuel filter anymore. No longer can we change our filter every 12,000 miles. NO ONE can tell me why or how this can happen. The manual mentions nothing about a fuel filter anymore. Now thats magic!!

It's not magic, GM took it out of sight and put it in your tank so that it's one more thing you'll think twice about before doing it yourself.

It's not magic, GM took it out of sight and put it in your tank so that it's one more thing you'll think twice about before doing it yourself.


I know...its sad isnt it? F*'ing engineers think up some of the most stupid stuff. Why on earth would any manufacture do that?! That is THE single biggest gripe I have about this truck. FOR YEARS I replaced my own fuel filter every year or so from my 73 chevy pickup to the 02 delali. A clean fuel filter is as vital as an oil change (Well, I now change my oil every 6000 or so; thank God for synthetic....and even then thats probably too soon). Anyway, not even the manual says boo about fuel filter. Talks about the windshield whiper fluid but nada on fuel fitler. Amazing. Some butt hole at the dealer said that its "a lifetime" filter to never be replaced. Really? I find that very hard to believe. Clean fuel is important to high pressure FI engines. I still dont know what I will do about a "filter"?

Who is the dumbass engineer that put the filter in tank anyway? I want him shot.

........From what I understand on the GM generation 3 OBD nearly everything is "automatic". Its not simply a PROM style computer. In otherwords it continually "adjusts" fuel/air ratios. Much smarter and interactive than the older OBD II. So as we add/delete items from the engine and exhaust etc., it knows and adjusts. !


Ah that really does sound like a significant improvement from the obdII in my 96. I would think that if I just bolted long headers on, the damn "check engine" light would come on and probably even start flashing.

As to the dumbass engineer and the fuel filter in the tank? Probably the son of the dummy who put the fuel pump inside of the tank to begin with in such a way that you have to completely remove the tank to replace the pump!!

As to the dumbass engineer and the fuel filter in the tank? Probably the son of the dummy who put the fuel pump inside of the tank to begin with in such a way that you have to completely remove the tank to replace the pump!![/QUOTE]


............I bet your right!

[QUOTE=Mr. Peabody]Ah that really does sound like a significant improvement from the obdII in my 96. I would think that if I just bolted long headers on, the damn "check engine" light would come on and probably even start flashing.



Ya - the old OBD I and II required a "reprogram". If not, everything went haywire and the check enine light would come on as you say.

Just purchased Hypertech's PPIII on ebay last week. When item arrives, I'll test out for myself. I may post an update later.

*Stock Stats*
0-60mph time: 9.2 seconds
Max MPG (city): 312 (gas light came on) (agressive driving)
Max MPG (hwy): 365 (gas light came on) (cruise @ 80mph)

**Note: Upon applying wide open throttle (stock config), there seems to be lack of "high torque feeling" in the low RPM band. Will this improve (at least slightly) with reprogramming.

Just put on my filter and setup last night and took it out and punched it - Man it never punched like that before! Whoo Baby! It was great. I can't wait to see how it respondes on fuel etc. I am now just looking for the pipe that leads from the filter area (right after the sensor) up directly into the intake manifold so I can get rid of that plastic piece in front of the engne. Any ideas?.

I took that box off mines (says Vortec) and sealed it off If i knew how to post I would show ya a pix

bcopeland...

Are you referring to changing out entire air intake setup (OEM) for an aftermarket setup (K&N's FIPK)? I wanted to change that, but just swapped the filter. My Yukon sucks in more air, and seems to have a bit more jolt to it, but I'm still awaiting the arrival of my PPIII. Hope to see in today or tomorrow. *drewlling* :-P

What do you mean 'with the lid turned upside down'?

Does it still latch and is the filter exposed?

Can you post a picture?

Please someone , more info on this turning the lid upide down, i was just running mine with a K&N with the lid off the air box and that worked pretty damn good

I am referring to changing out the entire air intake setup (OEM with the Vortec cover and the plastic piece that runs into the Vortec section) with the tube (or pipe) that replaces all of that - I guess thats called the K&N FIPK.

I am lost. I removed the Vortec section and noticed a improvement on truck response and then after reading about the mileage on gas i resorted back.
Can someone give me a link to the K&N FIPK so i can see what this looks like or post pix on here

I am lost. I removed the Vortec section and noticed a improvement on truck response and then after reading about the mileage on gas i resorted back.
Can someone give me a link to the K&N FIPK so i can see what this looks like or post pix on here

Audi,

Try this link

http://www.knfilterchargers.com/search/product.aspx?Prod=57-3023-1