been play with some setups. mostly thing some timming setting. so far it like 28* the best. took it to bailyton last week. In 2wd it will spin the whole track and still went 8.20. I did a soft 4wd launch (10psi) and ran 8.80. the wastgate was set at 45psi and when it hit that it would start to pop. So as soon as i hit lock up, the wastgate would start to shuder bad. II has sent me a new gate to try and so far it will hold @ 68psi. i think i am going to go to bailyton next wed night to some more testing. come on over there. if brad not working he will come. just go 278 east to holly pond, turn right at 91, go 4 or 5 miles then turn right at the sign. track is 1 mile on the right.