Malbec 56 Beast wrote: ↑Sun Sep 24, 2017 1:55 pm
DFW, what modifications have you made to your car to do this?
Andy
Uprev tuning makes the VVEL adjustment possible.
After a couple of weeks of playing with these new settings.
I have found you can make the engine idle like it has big cams. Off-idle throttle response is touchy and it has a low rpm surge if you do. It starts up like normal and as the VVEL system comes on line it starts loping like crazy.
I discovered by setting the minimum angle tables to a higher value than stock I can get much better throttle response and better off-idle torque. The throttle plates respond faster than the VVEL. VVEL minimum angle from the factory is about 4°. I have played with as much as 40° at idle and 40° lopes like crazy. I ended up finding a sweet spot around 20°. The car has a very noticeable, MEAN sounding idle but is still smooth. With the VVEL minimum angle at 20° the annoying engine breaking is cut down to a minimum. The car coasts much better when you are off the throttle. I find myself downshifting or stepping on the brakes much more often because the car wants to keep on going when traffic starts to slow down. My fuel mileage has had a 3-4 mpg jump in daily driving. I am pulling a steady 23-24 mpg on my daily commute and I am not light on the go pedal by any means. By adjusting the maximum angle table to allow for more lift/duration and increased cam overlap at lower rpms I have found a very noticeable low-midrange torque increase. 20-30 mph roll in 2nd gear brakes the P275/40R20s loose with relative ease. I have found the torque increase so substantial that I am rarely running the engine past 3,500 rpm even when I am wanting to get up and go. The engine just pushes the car around so much more easily than it did before. The torque difference is night and day different. Finally I raised the maximum angle from 68° to 75° from 6,000 rpm to 7,000 rpm and the top-end pull is also noticeably stronger. In Drive the car has a habit of wanting to peg the 7,000 rpm rev-limit before it will upshift out of 1st or 2nd gear. You can feel the throttle plate shut during the shifts to keep the engine from over-reving during the shift. I have raced a couple of newer 5.0 Mustangs, a kid I work withs moded Ecoboost Mustang running a tune, intake, exhaust, alot of boost and a blow-off valve and a new 5.7 R/T Challenger all from a dig and none were even close.
With traction controll off ALL of 1st gear is useless above 1/2 throttle and at WOT it spins about half way through second before it finally hooks up around 50 mph.