had the saleen dynoed last satuday. it put down 472 rwhp 411 rw torque. built up the bottom end new cams (comp cams) port and polish the heads. paxton novi 2000 stock pulley.
on my 01 i had that problem it never moved, it freaked me out when one time it did, thats the only time it did. they are bsin you. go get some autometer gauges. i have a pair of those and they work sweet.
more potential. more power. a fully forged motor with a kenne belle autoror blower can make upwards of 500/500 to the wheel. have not heard of any "E" cars making anywhere near those numbers with the series IV.