annoying boost problems!

[pastures16]

sorry to hijack the thread but what should a standard aby be boosting im getting about 13psi

[AndyP]

I stand corrected on that, according to S2 Central both the 3B and the ABY make 0.83bar ( 12psi ) boost, but the ABY has overboost to 1.15bar ( 16.6psi )

[pastures16]

cheers for that andy looked on s2central but must be blind
the aby has over boost for what reason protection???

[AndyP]

Quote from S2 Central:-

"The ECU of the ABY engine has one other fundamental difference compared to the 3B in that it has a special 'overboost' mode which allows boost pressure up to a maximum of 1.15bar in short bursts to allow increased torque to be generated when needed e.g overtaking. Outside of the 'overboost' mode the ABY generates the same 0.83bar of boost as the 3B in normal circumstances. The overboost mode is limited by the factory ECU to bursts of no more than fifteen seconds."

Not 100% certain what triggers this but I thinks it's when you put your foot flat to the floor quickly in 3rd/4th/5th & 6th gears, as if you are going for an overtake.

[pastures16]

cheers that makes sense

[Welleh]

could possibly be! bought the car as a non runner, ecu was minced bought another one with a piggyback in it! so that would say why, i'll try reading the codes on the mtm ecu ive burrowed!