fair play to you but surely you would be better of spending time/money improving the setup of the car so it can use all of its 400 horses, rather than giving it more power i assume its not gonna be able to handle until its doing 60/70mph. i think if you could get it launching harder off the line you could get your 10s, and that giving it another 100bhp might not be the best way to get the times you want.

either way, thats just my opinion, its your car, so cant really knock whatever you decide to do with it!

whats the score with the 170 head btw? having a big discussion on xrtwo.com about these engines/heads. whats involved in running one on a silver top bottom end? theyre suposed to be faarrrr better than the std zetec heads, and better than alot of so called performace heads you can buy off the shelf from engine builders?