Well I started with a 1.4, added cams, exhaust, decat, unichip (great piece of kit, which allowed me to run nitrous too), manifold, k&n, Puma throttle body and Nitrous. That brought the 1.4 to 145bhp on the rollers.

Then the same spec on my 1.6 which I replaced the 1.4 with, roughly same power.

Now I have a Focus RS engine in my Focus. Not sure what the power output is with Nitrous, but otherwise she currentlt sits on 265bhp. GT28 and manifold will be on soon when I get the time.

But otherwise, there are aftermarket throttle bodies just been released for the 1.6 SE lump. That shows over 160bhp. But TBH I doubt that engine will be able to sustain that power very long. They ain't that strong despite being developed by Yamaha.

TBH I wouldn't change anything I did, as it was quite impressive as it was. Wiped the smiles off a few ppl. But at the end of the day it wouldn't last, coz I knew it was a small engine.

Have a look at this thread off FFOC, this guy has them fitted plus pics (throttle bodies)

http://www.ffoc.co.uk/forum/viewtopi...=96390&start=0

Pics are a bit boy racery, but you get the idea.