power valve
New member
I was told that if you take 11mm out of the srx pipes you will see hp true or bull.
they make more power, at least on the grass. when i grass dragged my viper with srx pipes, the only sleds that i couldnt beet were a prostock 700 cat that run on race gas(he was way out front) and a ported 800 piped viper that was just in front of me(im sure he had alot more hp and not as good a setup)
there was a few other piped vipers and srxes there that was not even close. some of that im sure was setup.
also, the viper cylinder exaust port shape and angle of powervalve was supose to be an improvement on the srx cylinder design.
i think the pipes work great for racing because the muffler and pipes are wrapped so well that the stay hot and work as designed. for racing i use aset of manifolds that were cut 3/8 back to help the pipes effect the motor as if they were at full temp at teh start of the race, not the end.
valin, if your racing with it use the viper box, i was told it was 8deg more advance at 8600 and from swaping boxes, using temp guages, i believe it. use the srx box on the trail.