GT2554r Dyno Sheet
 

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.

http://farm3.static.flickr.com/2571/...39f4eca6_b.jpg

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.