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K&n Cold Air For Nbs Sierra

stephenson121588

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REV353 Enthusiast

REV353

Posted
Posted

I have put them on my last 3 trucks thinking they were going to do wonders. They did not do squat. I do think from reading other posts, you should have a modded engine to get any benefit. I put my stock intake back on and the OEM style Amsoil air filter, seems like my MPG picked up and my MAF sensor is not turning the check engine light on. If you do go with one, see if you can get a prefilter to go over it.

Russ G Enthusiast

Russ G

Posted
Posted

As far as I can tell the air intake is not the weakest link in the quest for more power. The biggest problem is torque management. I installed a performance tune with a Diablosport Predator and did notice a difference. Now when I remove the Torque Management I noticed a bigger difference. GM really puts the clamps on these things in an attempt to make things live longer.

alwcurlz Enthusiast

alwcurlz

Posted
Posted

A "cold air" intake system is a waste of money. These cold air intake systems are more of a looks and mental thing than economy or power increases as they will not even pull "cold" air from the engine compartment due to obvious design characteristics, unless it's some ATV or motorcycle. Besides, the computer adjusts the fuel/air ratio according to the air temp so, cooling the air won't help unless your motor has been setup to gain an advantage with that design. Also, the round/cone shaped filter they provide doesn't matter. The computer doesn't know or care if the filter is a cone shaped filter or flat. It's like putting a throttle body spacer in. It's old school ideas at work. Computerized engines need computer tweaking now. Also, with no tweaks, and a stock filter system with paper filter I get 21mpg hwy. :D

kawtoy_77 Enthusiast

kawtoy_77

Posted
Posted

The best I ever got out of my '07 5.3L was 19.2 mpg that was running all day on the interstate @ 70mph How the hell did you get 21mpg again!? :lol:

WilliamBos Senior Enthusiast

WilliamBos

Posted
Posted

My sediments exactly. Makes the aftermarket rich if nothing else.

 

 

 

A "cold air" intake system is a waste of money. These cold air intake systems are more of a looks and mental thing than economy or power increases as they will not even pull "cold" air from the engine compartment due to obvious design characteristics, unless it's some ATV or motorcycle. Besides, the computer adjusts the fuel/air ratio according to the air temp so, cooling the air won't help unless your motor has been setup to gain an advantage with that design. Also, the round/cone shaped filter they provide doesn't matter. The computer doesn't know or care if the filter is a cone shaped filter or flat. It's like putting a throttle body spacer in. It's old school ideas at work. Computerized engines need computer tweaking now. Also, with no tweaks, and a stock filter system with paper filter I get 21mpg hwy. :lol:
Stevens03 Senior Enthusiast

Stevens03

Posted
Posted

Not as big of a fan for K&N open filament style cold air intakes, but I do like the Volant, S&B and GM's intake. I've noticed a difference in all the vehicles I've put one on and do recommend it. Are they worth the price, well yes and no.

 

If you want a little bling under the hood and better throttle response, they work. At least for me they have. :) Since you have an 07, I'd seriously consider the GM performance intake. :lol:

chrt396 Enthusiast

chrt396

Posted
Posted
Not as big of a fan for K&N open filament style cold air intakes, but I do like the Volant, S&B and GM's intake. I've noticed a difference in all the vehicles I've put one on and do recommend it. Are they worth the price, well yes and no.

 

If you want a little bling under the hood and better throttle response, they work. At least for me they have. :) Since you have an 07, I'd seriously consider the GM performance intake. :lol:

 

 

That's what I just installed along with the GM Touring catback exhaust. (single) Looks good, sounds great, mileage is TBD.

Silverado4x4 Senior Enthusiast

Silverado4x4

Posted
Posted
The best I ever got out of my '07 5.3L was 19.2 mpg that was running all day on the interstate @ 70mph How the hell did you get 21mpg again!? :lol:

 

I got 22mpg heading down to Tennesse last year on I-81 south running 65-70 mph.

alwcurlz Enthusiast

alwcurlz

Posted
Posted
The best I ever got out of my '07 5.3L was 19.2 mpg that was running all day on the interstate @ 70mph How the hell did you get 21mpg again!? :thumbs:

 

It was actually about 21.3 mpg and sometimes closer to 22 mpg. I just set the cruise at around 65 and that's it. Gotta remember too, that wind resistance is the biggest factor in efficiency. The faster you drive, the more work it has to overcome on wind drag.

 

Several weeks ago while changing the knock sensors, I cleaned out my intake ports completely. Last week my truck recently started surging, valve clattering, and finally quit on the road and had it towed home. The fuel pump couldn't pump enough anymore after 144,000 miles. So, got a new fuel pump off ebay, installed it and changed the fuel filter as well. I'll have to do some more testing to see how it operates now with all those changes but, I'm hopeful maybe the MPG will be better yet!

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