Rev3 Turbo Overboosting help. *UPDATE* - DP off

[adam3442]

That's not an easy question to answer. Car was off the road for about two years as I built a house, I seem to remember it running actuator pressure but can't be sure.

Major changes since are conversion to COP as well as some mods to my Jun intake. It has a link g4+ with timing set on the dunk using crank and cam sensors and a timing light.

[SonicSW20]

That's not an easy question to answer. Car was off the road for about two years as I built a house, I seem to remember it running actuator pressure but can't be sure.

Major changes since are conversion to COP as well as some mods to my Jun intake. It has a link g4+ with timing set on the dunk using crank and cam sensors and a timing light.

Excessively retarded ignition timing can cause overboost like you're describing. If it wasn't doing this before and it is after substantial changes to the ignition system this may be a good place to look.

[adam3442]

Thanks bud, will also check that.

[adam3442]

So, car is back together, hasn't been test driven yet but timing checked and it's advanced by 5 degrees, this shouldn't be a massive issue when it comes to boost. And it hasn't been fully mapped yet.

We'll see if it still does the same on a drive.