But its possible if your A/F is on the money. I'll be dynoing friday and i'll make a few pulls on pump gas then a few on race gas. After the dyno, i'm getting a Z1/Ash race chip set the A/F to 12:1 on race gas and will redyno. Let us know if you dyno during this week. If all goes well your knocking on teh door to 400, goodluck.