I installed my Alta CAI and turbo inlet tube today. Install went well but after driving a few miles, i've gotten a warning light of some sort with a warning chime. The engine is revving to about 2000 rpm repeatedly on its own.

The warning light appears to be an engine that flashes half full then empty again while it continues beeping.

Might this be a MAF sensor issue?

I need to get this fixed tonight, gotta get to work in the morning!

 

Update: The warning indicator is amber and means "full engine power no longer available" according to the manual.

I've disconnected the battery to see if it resets.

 

Sounds like a boost leak? Are all the tubes on tight?

 

I'm going to make sure the clamps are tight..

 

Clamps are tight. I put the stock turbo inlet tube back on as it seems to have a tighter fit.

Battery is currently disconnected. I'll see if that fixes it.

MAF looks completely clean.

 

Does the car run normally with the stock tubes?

Other than a boost leak or an MAF malfunction of some sort I can't imagine what could spontaneously cause the car to rev on it's own and not allow you to rev the engine up.

 

You won't get a boost leak by changing the intake.

Please refer to the installation instructions.

It is very important to remove the excess oil from the foam filter, as per the instructions, along with how to clean the MAF sensor. Sounds like this is the problem. The oil does not have to be visible on the MAF in order to affect it.

 

Uh, he installed turbo inlet pipes...

 

He clearly stated that he installed the Alta CAI. Li'l Red's Rider has a very valid point.

 

There is one turbo inlet hose, and that is what he said... there is only boost past the outlet of the turbo... there would be no reason to loosen the cold side boost tube to install the intake...

PocketRKT - You may have a vacuum leak. Check the small hard tube that crosses over the inlet hose, make sure that it is connected securely.

 

check the red alta tube that connects the CAI to the MAF sensor. If you feel oil inside the tube, you need to clean it and also check if theres excess oil on the filter. I had this problem for awhile, after I cleaned the tube my CEL problems went away

 

The stock turbo inlet has not made a difference. And the CAI is still there, just not the Altal turbo inlet tube.

Li'l Red's -- The small hard tube is securely fastened.

 

I'll see about MAF cleaner when i can get away from work this afternoon. Any tips on cleaning the sensor? I'm not even sure where to spray.

 

There is no residue in the arm or the MAF enclosure. There appears, however to be dried fluid that I recall being there before installation.

 

I should clarify that the engine revving is from idle to about 1500 rpm in rapid succession. The warning light continues to flash and and warning beep chimes repeatedly.

The exhaust pops a bit too.

I can drive the car, but as soon as I remove my foot from the gas, it starts revving.

 

I know that, but he said you can't get a boost leak from installing a CAI, I didn't say he could. He mentioned he was installing turbo inlet pipes. When I said boost leak, I meant vacuum leak too, either one could cause issues like the ones he described.

Seemed like the OP had the MAF covered when he said he checked it and it was clean.

 

Flashing CEL and inability to rev the engine past a certain point indicates limp mode. Are you sure the MAF is plugged in? lol.

 

The MAF is definitely plugged in. I can rev the engine fine, but it sits there and revs itself in rapid succession (as though tapping the gas every second). My foot never has to hit the gas for this to happen. The car is in some sort of panic mode.

I also sprayed the MAF with MAF cleaner. Still not working. Some simple installation this turned out to be.

 

Yea, it sounds like it's in limp mode (Which doesn't normally cause the car to rev spontaneously). I honestly don't know. It's some kind of boost/vacuum related issue, or something to do with the MAF acting weird.

 

What is going on? Still the same?

 

Sounds like you've discovered yet another limp-home mode in the R56. What a strange ECU indeed. Another limp-home is the car will operate fine except have an engine icon on the tach and only allow about 1psi of boost.

It sounds like the CAI's on the R56 do more harm than good. The DIY intake I tested last year lost power across most of the RPM band, however it had no CEL issues like you're having. Good luck!

 

Last night I started putting all the stock components back on. It turned out to be the "sound generator" that comes off the firewall. Alta supplies a plug for that spot now. I guess it wasn't totally plugged.

I was uncomfortable with that part being eliminated anyway so I left it on and re-installed the CAI. It seems to be working now.

I still have a CEL, but no more warning light or revving. I hope the CEL clears on its own. If not, I'll unplug the battery.

I'm an expert at pulling the intake system out now though...I think I pulled it apart and put it back together in various forms 10 times.

Thanks for the help everyone

 

Looks like rustyboy155 was right; a boost leak!

 

Glad you got it going, glad to be of assistance!

 

the alta instructions aren't very clear on how to block off the sound generator, this might help you https://www.northamericanmotoring.co...1&postcount=30