i have an 03 f 7 with a black magic whoop ass kit in it & my buddy has an 03 viper with some bender racing work done to it. What do you think the out come will be?

Depends how much work is done to the viper,, unless it has triple pipes and motor work you'll likely be safe.....R2R

Depends also on how good of a set up the whoop-ass kit is and if was set up correctly (ie; dialed in correctly, not just using the base settings),, i've seen some BM kits run like shit in the past as well do to un-knowledgeable installation/tuning

Stock vrs stock there not even close. You put a kit in yours and he does also he would have to do way more than pipes and some slight mods to even come close.

I agree, I do know triple pipes on a viper and working well gives it a huge kick in the ass,, there's one here ...haven't seen a BM kit in action so I can't say..... R2R

don't be so sure,, I've run one with triple pipes and they work in the right hands.....R2R

all in the right hands and distance and conditions play the usual role

The distance was no problem ,,viper went 111mph on GPS....

the viper does have triple pipes & v force reeds & trail porting . also a heelclicker clutch. my f7 is set up to bm specs with the whoop ass kit. i have not played with the weights or springns. he gets me in 500 ft by one sled but i walk him hard on top end, not even close. need help off the line.

vipers are fast in 500 in the right hands i would say play with the clutch settings like spring and weights to try to get a better start