RJM02GTDrag

I installed chrome BBk long tube headers after removing my second pro chamber that fell apart, and a BBK off road x pipe replaced the pro chamber. My 1/4 mile time went from 13.61 @ 101.18 down to 13.55 @ 101.67. I am dissapointed, expected alot more from headers.What do you guys think, track and conditions were the same, 60 foot a little worse. (1.80 before to 1.87 after)

mdvaldosta

How do you know the track conditions were the same? What was your corrected for DA on those days? I woulda expected about a .2 drop

RJM02GTDrag

Well it was the same track at the same time and the same temperature, actually a little cooler,not sure about pressure or humidity, I guess I will have to look up that adjusted for sea level formula again.

mdvaldosta

It can make a big difference. I just ran .12 faster last night than I did a few weeks ago, the DA was 1300 instead of 1900 and both days felt about the same to me.