I didn't mean literally that is the number that tuners are sticking with throughout the entire rev range and under any boost condition. My biggest complaints have been about driveability at low rpm range where not much boost is being made. At 3,000 rpm my car, under boost is making 30 lb/ft torque
less than stock and it's running 11.1:1 there. If it was leaned out in the midrange, it would act civil, make more power and get better mileage and be closer to emissions targets.
My car does make 422 whp at 7,500 rpm. That part is ok. I'm not suggesting they lean it out at redline. It's under 5,000 rpm where the tweaking with Stillen's tuning needs to occur. If you look at their press release, they are getting 340 lb/ft or torque in the midrange, where my car is only making 280 lb/ft.
Quote:
Originally Posted by Kastley85891
Are there people tuning FI Z's at 12:5.1 at WOT? on pump gas?  or was the comment in bold based of the timing advance thoughts?.
I agree the timing would make a difference to drivability where able to add it in, but 5 degs on pump gas with a lean mixture would generally cause problems, even as boost builds.
Personally Id be happy on E85 to add in 5 degs and run 12:5.1 flat
Not knocking any of your post but a little surprised.
Any one got some logs yet of these cars they could email me so I could graph them up, Id be interested to see the timing curves and fuel targets etc, I can post up data in seperate thread if anyone is interested in seing it. |