Taking the wing off will make a big difference for you. Above 120mph, that is producing a hell of a lot of drag. Think fast, then shift faster. You're whole time is that 60ft and 1-2 shift...like everyone pretty much said. Just keep launching!

 

For reference: stock turbo/block; weight with driver 3020 did 127.x. I am sure your car is heavier but the stock turbo power is way lower

I agree with your set-up and tires it should be around 134

 

haha speak of the devil. it's canmexican's car i was referring too

 

about how much mph by taking the wing off?

 

not bad 1.7 on a 18" wheel. best i did on a 18 was 1.6's with 18 psi

ur mph is there for a 11.0/10.9 pass , dont be scared to slam the gears.
what tire pressure were u running? are u doing a burnout before the run? what clutch are u running?

alot of work on the shifting and the right tire pressure will get u in the sub 1.6 60ft's

when im on street tires i run low 18-19 psi and slicks is 12-14 range. i like to run through the water and do a nice burn out, back up then stab it again to make sure it "hooks"

i also use the ebrak "preload" method on my triple disc. if u have



feel free to shoot me a pm anytime.

 

For reference I went from trapping 119 to a consistent 121 once I took it off. Above 120mph, the air starts getting as thick as molasses. Aero becomes just as important as the power. Drag will increase significantly as the downforce increases and the stock Evo wing produces 68lbs of downforce at 100mph - that will go up dramatically above 120, as will the drag. I think you could easily see as much as a 4mph difference if I saw a 2mph difference at 119mph. The thicker that air gets, the more noticeable the results.

 

the first launch u did was good, just need to slam 2nd as fast as u can to get a better 60ft and et.

i ought to test the wing theory back to back next season, very interesting.

 

Haha, its no theory. It's physics. That wing is a mph killer.

 

i'm gonna say if you put some seat time in the car, as it sits it will go 135.

also for the wing.. my friend was going 144 conistant with the wing (hta86, full weight, cage, etc).. he took the wing off and went 145, but it was another day with a 25mph head wind. so many variables..



the slow shifting is what killing your MPH, youll get there with practice.

 

David please correct me if im wrong but i believe you picked up 3mph with the vortex generator and facial block off plates with the wing. Hope you dont mind me posting this link to your thread, trying to help Tom out.

Link to thread im talking about: https://www.evolutionm.net/forums/ev...ing-sorts.html

David, also did some great aero testing and posted videos with tape pieces all over the car.

Tom Id be interested to see the following, front and rear undertrays, facial plates, bumper shutters, mirror block off plates, vortex generator, rear window with no wiper, and no wing. Be interested to see how much it helps.

I dont know if you did this or have one already Tom, but id say removing the wing and adding a vortex generator, and folding in the mirrors be a great start. Should help a good bit!

 

i believe yah, just was curious to see how much it really does affect a 140+mph evo.

 

Tom also needs to put the car on a diet. It's win/win, faster at the track and easier on the drivetrain.

 

Don't take the wing off, it won't make any difference if it's a factory wing. We've run the cars with and without with super consistent drivers down to low 11's and it was no difference.

If the car makes 600 whp on the VDR and Dynojet numbers, that is about 522 whp here. In a full weight EVO I'd say it should have a 138 mph run in it.

 

I was just finishing reading more of the thread and was going to comment on the vortex generator and saw this

YES! Get the Vortex generator on the car whether you have a wing or don't it works.

 

The vortex generator is a roof mounted diffuser that brakes up the boundary layer flowing over the roofline of the car. It essentially makes it more streamlined and brings the airflow down to the wing more effectively - as shown in Buschur's video. Problem is, if you have the wing on with that VG, then you are increasing the effectiveness of the wing, increasing unnecessary downforce, and thus unwanted drag. While the stock wing is going to produce far less drag than say an APR wing, it is still going to produce downforce and drag. If you are trying to run the best quarter mile possible, taking it off is the best route (not to mention you lose 8lbs off the rear of the car).

Interesting read on how a wing at 0 AOA affects downforce and drag...

Ideally, you'd want to have bumper block offs on the front, mirrors removed, front undertray diffuser, rear undertray diffuser, and a vortex generator with no factory wing or some type of trunk mounted drag diffuser.