Long story short:

I got the car tuned after my turbo install. I had a perfect AF curve and was at 11.8 - 12.0 at WOT. After some time, the car started hitting 10 on the AF gauge (probably even lower but the gauge shows 10 the lowest) Within this time period, (between the tune and when I started running rich) I had a crack on my manifold but got it fixed.

Then I got the car street tuned, leaned it out a little bit, it was never like how it was on the dyno. I was hitting 11.0's at WOT. My tuner said he wouldn't lean it out more without a dyno.

What would be the reason that the car is getting richer after a period of time?? I can post screenshots of the map if anyone is interested.


PS: What I also realized is that when I connect the AEM to the computer, AEMPro shows 5.x - 6.x for AF whereas the gauge reads 13-14.

 

wideband sensors go bad after time... replace the one you have and see if its fixed...make sure a injector isnt staying open

 

Weather, fouled plugs?

 

what do you mean by "make sure a injector isnt staying open"

 

well the weather is always the same in FL. also none of my friends had any problem like this. plugs are fine too

 

there is a good possiblity the car is hitting different load sites now, and the fuel map wasnt scaled properly. or the temperature corrections may be off.

there could be lots of various factors involved.

but be thankful its gone richer instead of leaner....thats the good news atleast.

 

boost leak? I think thats an issue on MAF cars, and not on MAP based systems though.

 

UPDATE:

We found out that the VTEC is not kicking in. That's why it's dumping all that fuel without needing it. Will change the VTEC solenoid and see what happens

 

Good to hear you solved your problem.

 

Who made your manifold?