Im not much of a dyno number guy, more of a real world 1/4 mile slip guy so 12.78 @111 mph to 12.4@115roughly is a pretty significant change at the drag strip.

An old rule of thumb is it took 10hp to drop .1 off the 1/4 mile time so id say its pretty fair to say the car picked up about 40 hp with the headers.

Obv. other variables such as DA and 60 foot come into play, Sikky, any idea the DA on the baseline vs the after runs ?

I can look them up if you give me date and time of runs

Curious did anybody ever take Sikky's challenge to test their V2 headers to the PPE headers at their shop?? Sounded like a pretty good opportunity to get a major discount on their headers?

This died after 7/6 .......^^^^^....