SierraTR91

Hi everyone,
after I have bought me a second hand engine for my sierra I was curious about how to set my ignition timing on the standard ecu? The engine will run on lpg and a bolt-on turbo kit. My plan was to run the car as a daily due to the daily distance I make everyday.
I have heard that setting the ignition timing on the standard ecu is not possible but I am not really sure about that.
Can anybody help please?

Thanks in advance

Cheers

JFB Tech

ECU has full control of the ignition advance, there are no adjustments possible, other than by retarding it using the octane adjust plug by the coil.

oldford

The map-sensor of a standard non-turbo engine can't measure boost pressure.
So, your engine will be running very lean, once the turbo kicks in.
Also, the ignition timing is not adjusted for the boost and will be too early.
Running lean combined with a too early ignition will destroy the engine in a very short time.

serg1ortega

Sorry for the up
I am adapting a Mercedes SLK supercharger to my Sierra Dohc and I am trying to delay the ignition by taking the two octane adjustment pins to ground but I do not notice that it delays the advance, I am measuring it with a strobe lamp and I do not notice anything.
(My idea is to use an Arduino to connect those pins to ground when it goes over 0.15 bars and activate a 5th injector, more or less like turbotechniks did)
What I can be doing wrong? I am joining the two wires (brown/blue and brown/red from the 3-pin connector that are next to the coil) to each other and then to ground.
Thanks in advance! And sorry for my low level of English