You are here: Forums Pickups Chevrolet Silverado & GMC Sierra Chevy Silverado/GMC Sierra - Owners hangout 

Chevy Silverado/GMC Sierra - Owners hangout - READ ONLY

5688 messages,  Last post on Oct 17, 2006 at 8:34 PM

You are in the Chevrolet Silverado & GMC Sierra Forum. Your Host is kcram

What is this discussion about? Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Truck

#5125 of 5688 Re: K&N Air Intake System--Worth the $? [obyone] by m_boise Aug 11, 2005 (6:13 am)
Replying to: obyone (Aug 09, 2005 5:54 pm) My service dept says it is OK. As far as the throttle body goes, I though K&N was a superior filter...shouldn't this keep the throttle body as clean as the stock intake system, even with the increased flow? Or does the K&N intake system cause some other problem---doesn't fit right? improper installation causing air to enter the throttle body that is not being filtered? Your comments are helpful. Also--a friend mentioned getting a throttle body spacer with helical grooves to cause incoming air to swirl---supposedly causing more efficient burn of fuel, any experience with these? Thanks. Replies to this message: obyone (Aug 11, 2005 8:11 am) txyank1 (Aug 11, 2005 10:46 am) rayt2 (Aug 11, 2005 12:37 pm) and 2 more...
#5126 of 5688 K&N Air Intake System--Worth the $? by m_boise by z71bill Aug 11, 2005 (7:25 am)
The high capacity air cleaner that comes with the Z-71 package (or trailer package) is nothing more than a different air filter. When you go to replace the filter you can pick which one you want - regular of high capacity. If you look at both side by side - unless you have a microscope - you will not be able to see any difference.   K&N is a JOKE - as are all the after market air filter crap that is sold.   The adds claim UP TO 500 additional HP & 65 more miles per gallon - (or whatever)   I have seen guys dyno their cars/trucks - then add a K&N then redo the dyno - NO DIFFERENCE in HP or Torque.   The only thing they do is REDUCE THE WEIGHT (of your wallet)   But wait - they also give your engine a cool sucking sound when you step on the gas. I really think some guys HEAR that sound and really think that they are going faster.
#5127 of 5688 Re: K&N Air Intake System--Worth the $? [m_boise] by obyone Aug 11, 2005 (8:11 am)
Replying to: m_boise (Aug 11, 2005 6:13 am) Throttle body spacer is also a waste of money.   K&N flows more air. Air that has been filtered thru cotton gauze and oil. It's that oil that makes things a little messy if you apply too much after washing the filter. Course the downside is that if you don't apply enough oil, you will be allowing additional contaminants into your system. Since K&N has no specific amount of oil to add to the filter nor a way to consistently apply it. I'd say you would be taking a risk of having too much or too little and both with consequences. Replies to this message: txyank1 (Aug 11, 2005 10:46 am) rayt2 (Aug 11, 2005 12:37 pm) txyank1 (Aug 12, 2005 4:06 am) and 1 more...
#5128 of 5688 Re: K&N Air Intake System--Worth the $? [obyone] by txyank1 Aug 11, 2005 (10:46 am)
Replying to: obyone (Aug 11, 2005 8:11 am) Where the K&N DOES have an advantage is after it starts to get dirty it will continue to flow more air than a dirty stock filter. So keep a clean stock filter in. (how to assure that I don't have a clue other than putting a new one in when you probably don't need one yet.) All in all the stock intake is a pretty efficient piece. If you want to improve it you need to get cooler air, not more air. Replies to this message: rayt2 (Aug 11, 2005 12:37 pm) txyank1 (Aug 12, 2005 4:06 am) rayt2 (Aug 17, 2005 9:51 am)
#5129 of 5688 Re: K&N Air Intake System--Worth the $? [txyank1] by rayt2 Aug 11, 2005 (12:37 pm)
Replying to: txyank1 (Aug 11, 2005 10:46 am) As you said COOL AIR is what really makes the difference. Unless you supercharge your not gonna get any more air into system by adding a K&N kit over the stock filters. I got the optional increased capacity filter when I ordered my truck and believe it or not I still have the stock filter in place since truck was purchased (57k so far). I thought that little indicator they attach wasn't working after the first 30k miles and pulled filter to look at it and it was same as new just a few bugs. I don't travel in dusty conditons just highway so not collecting anything but bugs.   I can't really say I gained anything with my Borla Cat-Back system either but it sure made the truck sound healthier than that stock exhaust.   Ray T. Replies to this message: txyank1 (Aug 12, 2005 4:06 am) rayt2 (Aug 17, 2005 9:51 am)
#5130 of 5688 what transmission by gmtruckguy Aug 11, 2005 (5:39 pm)
I just bought a 2005 silverado 1500 crew cab with the 5.3L V8. I am not sure how to figure out what transmission I have in it. I have been told they come with either an Allison or some other kind, and I'm guessing the Allison it would come with is the 4L80e. If anyone has any idea how to find out, or what transmission the 5.3L engines generally come with in the 1500's, I'm all ears. Replies to this message: obyone (Aug 11, 2005 8:03 pm)
#5131 of 5688 Re: what transmission [gmtruckguy] by obyone Aug 11, 2005 (8:03 pm)
Replying to: gmtruckguy (Aug 11, 2005 5:39 pm) 4L60E
#5132 of 5688 Re: K&N Air Intake System--Worth the $? [rayt2] by txyank1 Aug 12, 2005 (4:06 am)
Replying to: rayt2 (Aug 11, 2005 12:37 pm) I've had a Flowmaster on every truck I've owned, but never with any expectations of HP or MPG increases. It's all about the sound. Replies to this message: rayt2 (Aug 17, 2005 9:51 am)
#5133 of 5688 K&N by noobie1 Aug 12, 2005 (4:09 pm)
It's true about over oiling those things. I have the stock replacement in my truck. Recently registered a DTC, P0101-Mass Air Flow System. When I took it off I noticed what appeared to be soot coating the honeycomb and those other thingies just downstream. Soot? Didn't make sense. So I blasted it with some B-12 (frowned upon by the book) and put it back on noticing a little improvement. Later concluded the "soot" was a thin coating of oil from the K&N which had collected microscopic particles of dirt. That's the theory anyway. I intend to take it off again and do a more thorough job (before I spend 200 bucks on a new one).   -David
#5134 of 5688 Re: K&N Air Intake System--Worth the $? [txyank1] by rayt2 Aug 17, 2005 (9:51 am)
Replying to: txyank1 (Aug 12, 2005 4:06 am) Ain't that the truth ! I always like to "hear" my truck, the stock exhaust just doesn't cut it. My wife still to this day can't get over my removing a perfectly good new exhaust system from a new truck to install a new Borla system, ahh woman what do they know about a motorheads thinking LOL !   Ray T.

You are here: Forums Pickups Chevrolet Silverado & GMC Sierra Chevy Silverado/GMC Sierra - Owners hangout