Quote:
Originally Posted by bling5tatus
Timing advance is at which point the ecu decides it's a good time to fire the spark plug.... if you're boosting 7psi and your timing is all conservative and crappy like it most likely is (from the factory ecu)... then it is actually not advanced enough to where all the combustion is happening in a CLOSED cylinder... and some of the flame front is coming out of the exhaust valves.... thus causing heat in the manifold/turbo.
I am not a 420a expert but it's not like it's a motor that is unconventional. A motor is a motor and EFI is EFI.
Most stock ecus run really wimpy timing maps... and I imagine a nt ecu is no exception.
Also, that turbo seems to have a really good pressure source that is capped off with a nipple right on the compressor cover... I would use that for the boost controller's boost source.
Right now, I am suspecting that the boost controller is not connected properly on top of whatever issue you're having that is heating your turbo up so much.
|
Our motors stock make their power from timing advance basically, Which is one of the reasons we can put down 275hp at 9psi, But we cant boost any higher than 15 before we have to start RETARDING timing. Thats why i highly doubt it is a timing problem, That and the fact that there is many turbo 420's on here and i have never heard this be related to timing.