what causes

poping throught the rpm band on n20...

i have hsw lt1 wet kit 100 shot, bottle pressure about 900(jets rated at 1050)
ive pulled 4 5.5 and 6 degrees it seems to get a lil better each time i decrease timing and the car slows down but i think thats not the problem...ive read the plugs and they look like they are a little rich, my tr6 are gapped to .33
is it most likely that im blowing out the spark?

I think the kits are jetted to be rich with fuel. Try a smaller fuel jet to get less fuel and lean it up a little. Im sure Matt from harris will give you his advice on this too. But thats what I would try

Jetting was revised a while back for RWHP, so if your jets are stainless steel run the jetting that is included with the card, and it's based off of a 950 psi bottle pressure. Didn't you have an issue before with a fuel injector not being pluged back in or something along those lines? Has that been cleared up?

Thanks,
Matt

yes i fixed that but that was causing it to pop on motor...i fixed all the motor issues...now its doing it on n20...

I would suggest trying a new set of spark plugs and gapping them tight.

Matt

alright...ill try to do that this week and test them out...the other night i went out when it was dark and saw a slight arcing comming from plug number 2....possibly from 4 also.. seemed to be comming from the base of the plug to the head????????

.so they might not be getting a great spark, what would cause it?

I would say either your wires are not on all the way or the porcelain on the plug is cracked, but you should not be seeing any arcing.

Matt

stock fuel pump?

i was going through the same issues a while back. popping/backfiring/surging on nitrous. then as time went by it started to do it on motor!!
first i replaced the fuel pump, that fixed some of the backfiring/popping. then i did the opti and that fixed the surging.