Plenum throttle size

[gf350]

Any one know what the standard throttle size for a 350i. I'm taking the measurement to be the intermal diamiter of the air intake where the flapper thing is and get 65mm on mine.
GF.

[Mark Adams]

You are right, and your measurement is right

[gf350]

Thanks Mark,
I'm just trying to figure out what has been done to mine as it has a bosch performance test in the history with an estimated 205bhp, I assume it should be 190bhp if its totally standard.
GF.

[Mark Adams]

You can see 205BHP on a healthy standard one - especially if it has had a little fuel pressure regulator "therapy"!

[gf350]

Thanks Mark.
What do you get out of a 350 after you have worked your magic?
Gareth.