yesterday i picked up my comptech s/c from a shop, the car runs great im making 284.2 on a dyno dynamics dyno. I drove the car arouund for a few hours and then started the car up later that day and i got a CEL, car still feels the same and im sure its just a tripped CEL maybe from my test pipe or my thermostat (both have tripped the CEL 2 or 3 times). anyways i brought the car to autozone and used their OBD reader and nothing came up, the screen got power but nothing else happened. Is this normal for a stock comptech s/c with no EMS. Any tips would help. thanks


question #2. On the dyno yesterday my a/f ratio at the higher rpm's it gets to about 13/1, even with the FPR almost maxed out. I dont have EMS but i plan on getting an 8# pulley and EMS in a few months, im wondering if i need to monitor this (more dyno testing) to make sure it dosent get any leaner overtime, or are two pulls on a dyno sufficient? i want to be sure everything is safe for the 2,3 months before i go with EMS.I have the stock exhaust still and i was thinking maybe i should throw that back on (while still keeping the test pipe on), rather than my T1R70, which might be leaning me out. any thoughts would help alot. thanks.

 

Update, cel is off, autozone's OBD tool sucks, two vacum hoses were mixed up.
QUESTION 2 still needs answer.
thanks.