I just got home from running the new bbk header setup. I also changed to bosch p4 and msd wires, but I have lost about .5 sec. the car pulls better than ever but spins more off the line. This is confusing????

best time 13.53 101.7mph

best today 14.36 99.8mph

 

You lost .5mph and 2mph, that's not good

If the car pulled better, you'd have a higher MPH. The slipping could account for a slower ET, but the MPH wouldn't be affected that much. Something is wrong, or you changed something. Is it a stick or an auto? (I didn't check your sig).

Any vast difference in the weather (temp/humidity) since you ran last?

What is "bosch p4" ? Plugs? I'm assuming you gapped them correctly...

 

The bosch plugs are a 4 prong plugs that are pregapped. Temp was about the same .

 

You may be getting some knock retard now with the headers. Get some kind of scanning device to check. LT1 scanmaster is a invaluable tool.

 

hmmmmmmmmm... mabey long tubes would have done better for ya??? I picked up .7 and 3 mph in the 1/4 mile!!! and the car for damn sure pulled harder all around!!!! BBK...

 

Hey snakeatinz I live in plano as well... you have cats? Can you pass emissions with the longtubes?

 

That sucks man. I picked up .6 and 4 mph with my headers.