Hi all, my father installed a Stage 3 BB ecu (16psi) in his 89 Shelby Daytona. I installed a Stage 4 BB ecu (18psi) in my 88 Daytona Shelby Z...along with the injectors and 3.0 bar map sensors.

We just did it last middle of last week and have driven cars a few times and they are still hitting boost cutout. I have meth/water inj. so it doesn't matter too much if it overboosts, but my dad just has the +20's and we don't want to damage the engine. Obviously we both let off as soon as it overboosts.

I understand from Cindy that it takes some time for ecu to calibrate, but how long exactly and can any type of driving help it?

Also, do we need that small restrictor in the wastegate turbo vacuum line with these ecu's?


2nd questions: Where does the bov vacuum line go? Is it wrong to put it on the big left side vacuum nipple?