1G Leaning out over 3k RPMs

[dalawoi]

okay, so long story short the car has been tuned with ECMLink and SD for roughly 6 months on 15lbs. Out of nowhere i noticed my car was leaning out under load (anytime i got on it), it slowly got worse to where i'm at now. Leans out at anything over 3k RPM's. I have a Walbro 450 pump, FIC 1450s, fuel lab -6an line from tank to fuel lab filter to rail to fuel lab fpr. All has been in great working condition. Did a boost leak test and found a small leak out one of my couplers, fixed that and still doing the same thing. Any one have any ideas? I want to check my fuel pressure while driving but haven't really figured out the easiest way of going about that.

 

[oneslowwdsm]

Pump or E85? Check engine light on? Could be the knock sensor going out.

 

[dalawoi]

E85, No CEL

 

[oneslowwdsm]

I would try a different E85 station if possible.

http://www.streettunedmotorsports.com/parts/e85_tester.htm

Something like that could be of use to you.

 

[dalawoi]

i initially thought it might be the gas and filled up at a different station and still the same thing.

 

[DSMrightontime]

Any luck here? I'm having similar issue on a 2g...