tombstone80

I installed a C&L CAI two days ago I got from my friend. As soon as I started driving it, I had loss of power, a big roaring sound under the hood, gas milage of 4mpg, and the check engine light came on with the code reading LEAN CONDITION on the O2 sensors.

Someone told me I had a MAF sensor from the previous car so I replaced it with the one that was on my stock air filter. The check engine light is now off and it runs better, but there are still occasional roars from under the hood and still isn't running strong yet. It also idled a bit funny earlier. Is this due to excess fuel still in the cats? When will I notice the difference of installing the CAI?

The C&L came off of a 2007 GT. My Mustang is a 2008. Do I need to tune?

Franchi

Yes, you need a tune for it. The is two different C@L intakes for our cars, the C@L Racer and C@L Street. The C@L Street technically does not require a tune but that is ONLY if the sleeve is attached to the intake tubing, and you will still get better gains by far with a tune.

The C@L Racer and Street without the sleeve both require tune. I would get one asap.

I assume yours is a GT as well correct?

ski

Strongly recommend reinstalling the stock intake until you get a tune for the C&L CAI. Otherwise, the engine can get damaged.

Nuke

Wouldn't it have been nice to know what your doing before installing things? Yes, that CAI requires a tune. Brenspeed or AM/BAMA for some of the better tunes loaded in an SCT3 for more power than the canned tunes.

3-5 RWHP gain with a stand-alone CAI

20-25 RWHP gain with a CAI & good custom tune

And NO, you can't use your friends tune.

tombstone80

I was told it didn't need a tune before I installed it, but now I know better. I did run it a little hard this morning. Have I already damaged my engine? I'll put the stock back on when I get home from work this evening until I can get it tuned.

C&L sells a tuner pre-loaded with their tunes. Are there better options?

Mine is a GT.

Nuke

No damage. It would take awhile. The impact is due to running lean over a certain time period, more like months than days.

tombstone80

Thanks for the feedback

Nuke

No problem. We're all here to ask for help or to offer help.