Im trying to trouble shoot the limp home mode on my escort cosworth and would like to try another MAP sensor. I have a spare 3 bar one, can anyone tell me if i can run this on a standard escort in place of the 2.5 bar unit, and will the car run normally or will the ecu not allow it.
Many thanks.

 

It may run but not properly.
The map sensor is just a device which sends the ecu an electrical signal.

e.g. if the scale was 0-1v
So if you 2.5MAP, 2.5bar will 1v
If u use a 3MAP , 3 bar could be at 1v

Therefore u run the risk of detonation cos your running lean.

 

it will idle and drive on part throttle ok ish, but i wouldn't want to drive it on boost

 

Thanks guys, dont think ill risk it, have to find a 2.5 to borrow (like rocking horse S@#T here in NZ) PS to those that posted the info about replacing the inverter for the dash light problem, excellent info, sorted that problem.