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Go make a 40-100 mph pull with the performance timer and tell us what you get. Stock cars seem to run low 6's on a good day with good DA's. Bolt on cars in the 5's. If you have the freak of all LT1's with 500 rwtq, you would be in the mid 5's. LT1 E85 has a long post about his bolt on's, E85, and many many 40-100 mph pulls... My guess is you will be dissappointed like I was in the beginning and mid 6's...
Your car an auto or M7?
How exactly is this test done?
I start accelerating when I'm at 40 MPH.?
Or do I accelerate before 40mph so that when I reach 40mph it is already at maximum power? (If so, my car always does 5.6 and 5.7) same road in both directions. is z51 I have downpipe, mid pipe and tune. Alright ?
I guess if it is automatic in auto mode it will be fine.