Red and green turbo lights on my bundera's dash

[Syzygy]

have wondered what they are since the day i got the car...

hopefully the red light doesn't mean anything bad. It comes on when the engine is under high load at revs.

[phippsy]

On my mates one, the green meant it was on boost, red meant overboost and it stopped the flow of fuel so it didn't keep accelerating/boosting.

[I.M.P.O.S.E]

My green one was on 99.99% of the time

Always tried to get the red one to come on but no matter how hard I tried never saw it.

[toaddog]

The red one is a fault one. The book sez get the car to a dealer if it comes on..........

[BundyMonkey]

On my Bundy the red one used t ocome in around 3100 rpm now since ive put the intercooler on it doesnt come on at all. However it does need a tune as now Ive got the cooler on I should be able to get a bit more boost into it

[Skip]

Yeah my orange one came on at high revs.

When I put my 1JZ i hooked the sensor pressure line to my manifold and the green light still worked when i came on boost, the orange one doesnt work at all. Now ive ripped the sensors out of my engine bay, obviously the green one doesnt work but the orange stays on all the time, obviously to tell you something is not right.

[Syzygy]

On my mates one, the green meant it was on boost, red meant overboost and it stopped the flow of fuel so it didn't keep accelerating/boosting.

That sounds pretty right... Its got no more go left in it once the the orange light comes on.

[phippsy]

On my mates one, the green meant it was on boost, red meant overboost and it stopped the flow of fuel so it didn't keep accelerating/boosting.

That sounds pretty right... Its got no more go left in it once the the orange light comes on.

If the red light is on it's running over 7-8 pound boost. Too much boost and its stops the fuel to the motor, wind the boost back to 6 or so psi and it will run a heap better.

[MY45]

On my mates one, the green meant it was on boost, red meant overboost and it stopped the flow of fuel so it didn't keep accelerating/boosting.

That sounds pretty right... Its got no more go left in it once the the orange light comes on.

If the red light is on it's running over 7-8 pound boost. Too much boost and its stops the fuel to the motor, wind the boost back to 6 or so psi and it will run a heap better.

Ok i'll ask it...How do you wind the boost back, is it an easy job or a pain in the arse?

[dumbdunce]

On my mates one, the green meant it was on boost, red meant overboost and it stopped the flow of fuel so it didn't keep accelerating/boosting.

That sounds pretty right... Its got no more go left in it once the the orange light comes on.

If the red light is on it's running over 7-8 pound boost. Too much boost and its stops the fuel to the motor, wind the boost back to 6 or so psi and it will run a heap better.

Ok i'll ask it...How do you wind the boost back, is it an easy job or a pain in the arse?

it's pretty easy, you just need to adjust the preload on the wastegate actuator.

now to actually answer the question; the green light is triggered by a 2psi pressure switch attached to the inlet. the orange light is triggered by a 10 psi pressure switch on the inlet. there is no mystical fuel cutout on the mechanically injected engines (up to 1990).