vane air limits

[jet1]

say a 1988 2.3 turbo tbird
with roller rockers, big cam, ported everything, 2 255 fuel pumps 2 extra injectors, e 85 turbo, with all the air flow mods how would the stock vane air flow sensor handle this at say 20 psi. Where would it be limited to with driveability and keeping up with timing. The reason i ask is that i have done the mass air about 2 years ago before all the mods and was wondering at what point do you really need to convert?

[Stinger]

On a stock 2.3T, the vam will peg by 5k rpm and read no more air after that. On a setup like you listed above, you could expect the vam to peg wide open by 3500-4000 and be unable to read additional air after that. The timing would follow the top line of the timing map (2.60 load) and still increase with rpm. Fuel would do the same, to a lesser extent.

Does your mass air swap use a tuning "box" that has adjustment screws to tune the system? Should say PRO-M on it possibly? That's the only other means of doing a mass air swap besides the common (and more effective) ecu chip method.

[jet1]

yes, But i am haveing problems with it. Do you think it is smarter to go back to vane air Until i can do the ecu chip method?

[Stinger]

Sell the current maf setup to fund the chip stuff. You can go back to vam if you turn the boost down.