Charlescrown wrote:And make big changes to the tune because it will be running super lean because of the lower voltage going back to the ECU. I don't know if the resolution is a big problem because of interpolating between the cells.
Voltage may be different, but setting the flags for a 3 bar will sort all that out.
The resolution drop isn't going to cause any major issues.
Thanks for all the replies, hopefully fixing the brake booster gets rid of the error code. Just don't want to spend money on a original MAP sensor when it will be boosted in future anyway.
Why do you have to wait for the brake booster to be returned? Can't you just plug the port on the manifold? You shouldn't need to drive it to test this issue.
I had the whole braking system rebuilt (except for the booster) as the car had been sitting for 10 years or so. so it just went back to them to work out why the brakes were acting up.