Originally Posted by
Sp3no
TOTD are the guys you need to speak to, they know the ST170 inside out but are london based, there is Jam sport northampton or try Will Pedley Motorsport up north. All these could build you the motor you want. Not sure if Area Six is still running? Ian is the king of the Zetec engine
I wont use TOTD, they dont know as much as people think.
The St170 engine is used alot on kit cars, I'v had a few bits done by these guys. They know there stuff and its not too expensive for mapping and ecu's etc.
http://www.mtechautomotive.co.uk/engine-management/
they had a focus st which the guy had spent 3K with TOTD and it was running pants. These guys did the work to correct it and make it run better.