Any one want a cheap 75mm throttle body

[David]

So to the follow on, is there more power to be gained from the extra air without a remap, does the ECU detect more air going in and add more fuel? Is there a noticeable benefit (with or without a rolling road)?

I suppose the answer to both is yes, otherwise why bother?. :-)

No proof of extra hp, but certainly FEELS like it has. Also feels much smoother running, better pick-up and eager in acceleration, particularly 500-2500 range. Ever so slightly better consumption figures (?). No down side?

That is extra important on an auto like mine of course, since it influences the shift point logic of the ECU in a positive way, but most ZT260 owners are satisfied too, I believe.

Like I say, low cost, no re-map, P&P DIY job. Just don't expect it to feel like a Dreadnought or Roush equipped car as a result!

David