Rb25 Wont Idle

[Frosty]

I have to disagree with that. I can't see how the turbo that's not bring driven enough by the exhaust would have any effect at idle. If you pulled the afm off a nice running car and took apart turbo system then put afm onto throttle body I bet it would idle fine.

ok so from what you are saying a t28 and a t51 will flow the same air flow on idle at the same revs?

[Ben C34]

ok so from what you are saying a t28 and a t51 will flow the same air flow on idle at the same revs?

yep

[ido09s]

its actually got nothing to do with the turbo until you start to make boost.

An engine will ingest the same amount of air regardless of if it has a 10 inch intake or a 3 inch intake so the turbo size wont reatly matter

It may however cause issues with an AFM if it causes some sort of turbulence within the AFM which may be the case here, if its still running one of course

[grothie]

Yeah a tune would definitely help. But running stock sensors and ecu it should idle correctly I'd think. Unless there is a vac leak I can't see somewhere which would make sense