[JustinHEMI]

     Featured on BIMMERPOST.com

Another cool video by Jackie Ding.

I liked seeing his drive mode settings and how they changed over the sessions as he works to find the best mix of settings.

[bernard1414]

Interesting to see him running the engine in "Efficient" mode. Most likely to smooth out the throttle response due to cold track temps and lack of grip?

Also, do only the cars with the carbon trim option get carbon paddles? I thought all auto M2s get the carbon paddles.

[babym_gen]

It would be interesting to see what mods the other cars are running.
Because he is relatively competitive but still has a lot of things he can modify.
Suspension, tires, aero, more weight loss (sound foam, airbags, rear seats, ...), engine and zf8 tunes, ...

[JustinHEMI]

Yeah he's barely touched the car. Can't wait to see it develop.

[Squidget]

Originally Posted by bernard1414

Also, do only the cars with the carbon trim option get carbon paddles? I thought all auto M2s get the carbon paddles.

Just with the carbon trim. You can see the difference if you go in the online configurator.

[PLF69]

Originally Posted by bernard1414

Interesting to see him running the engine in "Efficient" mode. Most likely to smooth out the throttle response due to cold track temps and lack of grip?

Also, do only the cars with the carbon trim option get carbon paddles? I thought all auto M2s get the carbon paddles.

I tried em all and you get the most performance in Sport+ but you have to modulate more with your throttle inputs, Efficient I found too laggy and Sport in some situations it's very good but at other times there is a significant delay vs Sport+. And then you have the turbo engine variances of air density, temperature, humidity, elevation etc. Wich have some effect on response.

Your better up picking Sport or Sport+, getting used to it and mastering it.

[Game]

Originally Posted by bernard1414

Interesting to see him running the engine in "Efficient" mode. Most likely to smooth out the throttle response due to cold track temps and lack of grip?

Also, do only the cars with the carbon trim option get carbon paddles? I thought all auto M2s get the carbon paddles.

I'm seeing him in "Sport".

[///M TOWN]

Originally Posted by JustinHEMI

Another cool video by Jackie Ding.

I liked seeing his drive mode settings and how they changed over the sessions as he works to find the best mix of settings.

Finally worthwhile front page news

I seriously love the passion you have

[SexyRoger]

Originally Posted by JustinHEMI

Another cool video by Jackie Ding.

I liked seeing his drive mode settings and how they changed over the sessions as he works to find the best mix of settings.

again w the understeer. Man that is so annoying. The other M2 had the same thing, why can't they fix this. It's very annoying, M3, seems to have this better controlled.

[bernard1414]

Originally Posted by Game

I'm seeing him in "Sport".

Started the day in sport, but ran the rest of it in efficient.

[Hit_Apex]

Better throttle range/control.

[G30 B58]

This is a leased vehicle, right?

[JackiePhD]

Thanks guys! I'll keep updating my original build thread too. It's been a while.

The understeer, turned out to be a really isolated issue. For whatever reason, the Cup 2 Star spec made the car incredibly understeer-y. As soon as I threw the OEM PS4S* back on the car the following weekend, the M2 suddenly had way less understeer and actually turned a faster lap time than this video. It was a startling revelation and I'm currently under the opinion that the Cup2* is a waste of money and time for us M2 guys. Haha.

And yea, having tested all the modes, Efficient on engine mode gave us the best throttle modulation needed. Sport is already fairly aggressive and it feels like Sport+ was even worse.

[babym_gen]

Originally Posted by SexyRoger

again w the understeer. Man that is so annoying. The other M2 had the same thing, why can't they fix this. It's very annoying, M3, seems to have this better controlled.

Show me one production car that doesn't have understeer from the factory... it's not a bug, it's a feature. Manufacturers are concerned with liability, and a little bit of understeer is safer than oversteer.

If you want to shift the balance toward more oversteer, it's up to you to do it knowing the risks. You can increase front negative camber, make the rear stiffer, bigger front tires, more rake, ...

[frostyrwd]

Originally Posted by babym_gen

Show me one production car that doesn't have understeer from the factory... it's not a bug, it's a feature. Manufacturers are concerned with liability, and a little bit of understeer is safer than oversteer.

If you want to shift the balance toward more oversteer, it's up to you to do it knowing the risks. You can increase front negative camber, make the rear stiffer, bigger front tires, more rake, ...

My stock GR86 base with Michelin Primacy tires has mad oversteer and it’s fun as hell!

[BrendanZ0402]

Originally Posted by JackiePhD

Thanks guys! I'll keep updating my original build thread too. It's been a while.

The understeer, turned out to be a really isolated issue. For whatever reason, the Cup 2 Star spec made the car incredibly understeer-y. As soon as I threw the OEM PS4S* back on the car the following weekend, the M2 suddenly had way less understeer and actually turned a faster lap time than this video. It was a startling revelation and I'm currently under the opinion that the Cup2* is a waste of money and time for us M2 guys. Haha.

And yea, having tested all the modes, Efficient on engine mode gave us the best throttle modulation needed. Sport is already fairly aggressive and it feels like Sport+ was even worse.

Hey Jackie! Great to see you here. I just have a question regarding the brake pads that you’re running now. You are running the CSG C1 front and factory pad rear right? I don’t have a G87 but I do have a G80, which pretty much has the same braking system. CSG’s system is front C1 rear CE1, progressive pad front and digressive pad rear. But I’m not sure the reason they want to shift brake bias mid braking event, since everywhere else I’ve heard it’s best to keep the same compound front and rear to keep the factory brake bias. Any inputs?

[Blader]

Cup 2s have a narrow operating pressure window on the track. They work well even in cold ambient after you get some heat into them. What were your hot tyre pressures as your came off the track at the end of the session?

[babym_gen]

Originally Posted by Blader

Cup 2s have a narrow operating pressure window on the track. They work well even in cold ambient after you get some heat into them. What were your hot tyre pressures as your came off the track at the end of the session?

You can see the temperatures on the digital dashboard.
Assuming they are somewhat precise, they were way too low (100, 120, 150 at most). Ideal temperature I think is around 194F.

Maybe they were overinflated. (edit: so from the dashboard, it doesn't seem to be the case, if anything they are underinflated)

Fun fact, in asseto corsa, I always struggled to get heat in semislicks in non-areo street legal cars. I had to drop the tire pressure a lot.