Helping out someone I know...
This is a 1999 Firebird M6. Has ~112K miles if memory serves correct. The car seems to be very weak on the the top end. When it is under a load (WOT or part throttle) it seems to be missing. Occasionally the car will seem to cut out for a split second and then straighten up, then cut out again. The tune appears to be stock. I have attached the tune, and 3 scans. Some of you guys have alot of experience looking at this stuff, and I was hoping that you could take a look and tell me what you think. Thanks in advance.
Additional info...the owner has been filling up at a grocery store using premium fuel. I suggested that he start filling up at a Top Tier station (Chevron or the like). And I think that plugs and wires should be checked. What do you guys see?
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