Hi Guys,

Eventually made it to a rolling road and managed 221.5bhp at the wheels. Quite happy with that on a 2554.

Here's a scan of the rolling road graph.

 

That is good for a 2554, no correction factor?

 

Not sure what that means? Excuse my ignorance.

 

how much boost

 

Almost 2 hours later, the big question still stands:
HOW MUCH BOOST?

 

Around 13psi, tailing off to 11.x psi at the redline.

 

Nice numbers, but holy torque drop Batman!
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Do you think the torque drop off could be fixed by just trying to run 13psi to the redline?

 

would sure help a lot mate

 

I'm pretty sure if I run 13psi to the red line I'm going to get knock. I keep it at bay with octane booster at the moment. Maybe I'd be best to increase the boost to a flat line and pull some timing if I'm encountering more knock.

 

Then again, if you were going to run more boost near redline, then why not increase it lower too and enjoy a fatter midrange?

WI is always an option to help deal with knock.