Mark's 1G Winter Projects

[URV8SUX]

Originally Posted by Mark Leasure

No tune changes, I would need to download the log to see actual IDC since I have up to 15% of compensation of fuel in closed loop feedback, with a target AFR of something like 11.8. So it never went lean.

Awesome looking forward to seeing what it picks up at the track!

[Mark Leasure]

Originally Posted by URV8SUX

Awesome looking forward to seeing what it picks up at the track!

I’m going to dyno it to after I get my Magnus V3 Cast intake on the car. I did check the IDC @ 35 PSI, on a set of 2150’s it is 83% @ 9krpm, with an AFR of 11.6. I’m using a base fuel pressure of 44.5psi. I don’t have a comparison to that from the old setup. I would need to turn the boost up to the mid 40 psi range to even start to compare.

In the power department I changed a lot of things this year:
Map stage 5 head (The head that was on the car was a factory cast head!), bumped compression by a point, billet 76mm compressor wheel on the 42R, 3.5 aluminized steel to 4” aluminum exhaust, and to wrap it up I’m waiting on the new cast Magnus intake manifold.

I also figure that I removed 125 lbs from the car, even with adding carpet and door panels.

This year should be good, hoping to get deeper in the 9’s, a trap speed of 160+ would be nice too.