I doubt it. If no other work has been done to the engine, I don't expect the exhaust/manifold/induction kit to add that much. I'd say you'd be looking at nearer 5bhp- if anything at all. I'm no expert on this but for one, the original intake/exhaust system on the 205 GTi is known to be pretty good - there isn't really much room for improvement unless you're fitting bigger valves & throttle bodies, long duration cams, etc. Still, that set up will probably give you room for more improvement should you modify the engine. Beware, however, that some systems might even lose you BHP.
See Dave Baker's tuning article for more info, at
The only way you're gonna have any idea about this is to stick it on the rolling road. Bear in mind that even if you have 145bhp at the flywheel (and I seriously doubt it), that's not what you have at the driven wheels.
No way. What the hell does 'estimated' mean anyway? I guess, to a certain extent, it depends on what gearbox is fitted, but if it has either the 1.6 or 1.9 GTi 'box, I wouldn't expect much more than 120mph out of it. Maybe if you rag it to pieces down a hill you might hit 135mph - of course maybe it HAS been ragged to pieces down a hill.
Roughly 8 seconds.
Sounds like a nice car if you want it a bit rude - don't expect it to be any faster than a standard 1.9 though. Probably not what you want to hear but, well, that's how I see it. Could be a fun car on track days with the suspension set up correctly and if you *properly* modified the engine, it could be pretty fast.
Chris.