And if he's two points leaner than that after the intake there's an issue.

He's 2 points richer.

This happens (in my experience) when the MAF readings get too far of a % out of "stock" either direction. The car defaults to a super rich "save your ***" tune. Same thing happened when I put on my Nismo intakes (with or without the venturi spacers that are supposed to maintain the stock metering orifice) and before the tune went on.

I thought if he was at 10:1 before the intake, and 12.5 after then he's running leaner. Maybe I misread his initial post.

You're right, I misunderstood.

If he's at 12.7:1 he's perfect and should stop worrying about it.

10:1 is way wrong.

If the 12.7 is right, he's good to go. If that 12.7 is off as much as his stock reading, he's asking for trouble especially considering how hot IATs get with short rams.

I can tell you this... my AFR targets, specified by Jared @ UpRev are 12.68:1.

So there's that. haha

I'm currently running rich (11.5's) and down significantly on power since changing exhausts and filters...which was unexpected...but that's another topic completely.

Yeah. He's either dead on or playing with fire, depending on how off his readings are. If he's off the same amount post intake as he was pre intake, that's not good. If he really is seeing 12.7, then he's good to go. A dyno run with the tailpipe sniffer in would clear up that question in a hurry.

OK I never saw 11.8 at full load, always 10 stock, even after the ecu reset the dealer did when they changed my CSC it was 10:1, I started seeing the 12.7:1 after I threw on the intakes and reset the ECU

Any chance my app isn't giving me correct data? I don't have any other way to log AFRs so I don't know if torque is giving me wrong data or not, it shouldn't since its just pulling that data off the ECU

It's very possible you're getting bad data. Find a place near you for a couple of dyno runs with their wideband in the tailpipe. You'll know for sure.

I have always seen 10.1 stock, before my ecu was reset by the dealer and after with stock intakes with drop ins.

Anyone have an android phone with torque pro and uprev to compare data?

Don't really have the money to be doing dyno runs at the moment

If its always been 10.1:1, you either have something wrong with your car or your data logging. A couple of dyno runs are ~$50-75. That's a lot cheaper than popping a motor because what you thought was 12.7 was 14.7 and you sucked up a bunch of hot air or bad gas.

Your AFR is what your ECU is seeing. Doubtful it's bad data. Also since you're not logging data you're just looking at it while driving (right?) it's probably not accurate.

Ya I'll do a 3rd gear pull to red line and look at where it is at.

Idle and everything sits @ 14.7:1. I can do a data log on my way home today though and see where exactly I sit.

Setup logging like I showed you. And ditch yo ebay intakes lol

If its causing me to run too lean then I will but if it isn't than I won't.