NHRA95

I installed a K&N CAI part number #63-3060-1 in my 2008 Z06. Car is completely stock except for the CAI. Ever since the installation, engine surges while driving along at light throttle, approximately 3-5% throttle. Surging continuously at a steady highway speed. Not real bad, but it can be felt, and noticeable. If I accelerate, engine picks up without a problem. Problem only occurs while driving at a steady speed. After driving for 30 minutes, the check engine light came on. Took it to the dealer, and was told that it had 2 codes stored. Lean condition in left and lean condition on right bank. Dealer cleared the codes. Called K&N talked with their tech department. They ended up sending me a new cold air intake assembly thinking that the area where the MAF attaches was warped, and not sealing properly. So, after installing two new intakes, engine still continues to surge.

I installed the factory air intake, and that corrected the surging problem.
Am I the only one having this problem?

dvandentop

hmm interesting to say the least, no leaks that you can feel around intake when it is running?

NHRA95

No leaks.

Two intakes installed, both causing the same problem. Installed the factory air intake, NO surging.

RFZ

maf installed the proper direction?

patton

with the cai system it may take quite a few miles for it to almost run right

NOSZ06

My car surged after installation of vett air with stock filter. Installed the hall tech killer bee and car still surged. I think its a byproduct of the camshaft profile. High lift , wide separation keeps the engine vacuum low thus the lope at idle and surge at low rpms. You may be able to tune this out. I changed to the QM600 camshaft and as Carlos says its all in the tune. My .02

TAILWAG

sounds like the MAF is not facing the right direction....

Joe aka - KODAK

I have a K&N and have had zero problems with it!

toxin440

I installed a Killerbee and had some surging at highway speeds, come to find out out that that the bridge was loose.


Check your MAF and then seals (the underside especially). That accordian tube thingy can be a beeyoch to get back on.

Once I got mine on nice and square and bolted down tight - things worked like a champ.

MChicado

K&N CAI on 07 Z06 no problems other than the car runs a lot better!

QbnSuperman

ok, i'm sorry if this is a little simple, but this comes from CAI installs i've done on older, weaker cars..

did you try disconnecting the battery for like 15 minutes? i really don't know if that causes the computer to recalculate some stuff like it would in older EFI systems, but its worth a try.

dfinke23

I would take it to a tuner. Lingenfelter has specific MAF settings for their CAI on their website, I'm surprised K&N doesn't. I have HP Tuners if you're anywhere near central MO. If not, I'm sure you can find someone close.

NHRA95

There are NO leaks.

The MAF is positioned in the correct direction.

I disconnected the battery for the computer to relearn. Nothing has helped.

Like I said before, installed the factory air intake, and problem solved.

I shouldn’t need a tune just because I installed an aftermarket CAI. It’s not like it’s sucking in outside air. It’s just an open element CAI. (I do not want to get a tune, and possibly void my warranty)

I just talked to another person who installed a SLP Blackwing, CAI which is a similar to the K&N. He is having the same problem on his 08 LS3. So WHAT GIVES???

avacorvette

Maybe it's a 06 to 09 thing? Next people that chime in... How about stating the year of your Z and if you had this problem.

skudlw

Stick with the stock intake, send the K&N back, and get a refund. These aftermarket intakes are a waste of money for the measly 15HP you won't even notice except in your head and wallet. Big aftermarket hype.

tigertank

i disagree with above statement i noticed alot of difference and throttle response was better..... plus the washable filter will savbe $$$$ over the long term

TAILWAG

Heck, I am using the same intake out of my 06z - took it off before trading it and then re-installed on my 08z...both made 476rwhp adn 475rwhp respectively...w/NO tune...and after the intake.

After the tune...492+rwhp...

TAILWAG

Someone can't drive

Yes, 15hp will make a difference, and you won't have to replace the darn thing ever again.

I can sell you my stock filter if you want for $ 10 so that next time you have to replace yours...It has 3 miles on it

Daylon

Have the sensors checked, had one go nut's on my 05, and it caused all kinds of strange problems. I would almost bet money on this one!

v.vet's Z06

That's not a bad deal ($10) since the stock filter need not be replaced for 50,000 miles. I had a K&N on my C5 but have decided currently the stock filter might be okay because of its longevity. JMHO