I know, just a typo lol

I know there are 2 camps when in comes to the head gasket debate.
I dont wanna lower the boost, so I figured id try the 3mm route this time. I know a lot of the NY/NJ guys have had success with it.

Im open to suggestions though

 

u dont need to lower the boost. i think the issue might have had something to do with the re-tune you just had done?

 

possibly, ill talk to the guy about it.. maybe the cruising AF was too lean
Are you running meth w/ your setup?

 

^^Where was the AF set on cruise? Mine is anywhere from 14.8 to 15.2 and I hadnt had any problems. Being that there really isnt a huge load on the engine, 14.7 to even 15.8 AF at cruise shouldnt hurt anything.

 

cruise was btwn 15 -16.5... the 16.5 on downhills sometimes

 

oh well when you're off the gas, it should go to full lean. my wideband stops reading at 21:1 or something around there and when i'm off the gas it goes all the way lean.

 

Agreed, A/F ratio of 16.5:1 at no throttle is completely normal, in fact it was leaner than that, but your gauge probably doesn't read leaner than that.

Regardless, your partial throttle A/F ratio is most likely irrelevant in your case. What was your A/F under boost (and at what PSI/RPM)? Timing?

 

don't forget bad gas as a possibility? could have beat on it a few times, boost spiked a psi or two, and it would slowly get worse from there.

 

If the motors out of an early AP1 upgrade the oil jet bolts too.

 

It's certainly a possibility, but unlikely. Fuel is held to pretty stringent standards, and unless you go to your local bodega with one rusty old pump for gas for your turbo S2000...well, you get the picture.