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09-27-2021, 01:07 PM | #90 | |||
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DSC, you say? Never heard of it
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09-27-2021, 01:46 PM | #91 |
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I'm running a BM3 CS+ tune and don't really get any squirm anymore. I had tons of squirm on stock tires (MPSS * spec) with stock tune. I'm running euro MDM/traction (way less than US intervention) with 295 PS4S.
The 285/30/20's have a 9.9" tread width, the 295/30/20's PS4S's I'm running have a 11.1" tread with. It makes such a huge difference it's a joke, this is the minimum size to run if you want to put the power down IMO. BMW I feel wanted to highlight the hooligan-ness. Also, changing to the GTS rear-diff settings makes a tremendous difference, lockup is progressive, rather than instantaneous (again preventing the hooligan-ness, prioritizing putting power down/drivability). Powering out of corners is now linear and extremely controllable even with ample power. Running this with the standard fronts but in MP4S, I only get rear squirt if I'm at some angle or I have bad traction due to environmental conditions. I get very little squirm full power in a straight line. |
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09-27-2021, 02:18 PM | #92 |
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It depends what you mean by LSD. IMO it can NOT operate like a standard mechanical LSD since the only way to lock up the axle is through the electrical stepper motor.
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09-27-2021, 02:57 PM | #93 | |
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DSC, you say? Never heard of it
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09-27-2021, 07:05 PM | #94 |
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On a related note, has anyone got a code for temp out of the norm from the rear diff temp sensor? I did a rear diff service and that came up and I cannot clear or delete it. It says seek immediate attention, however, there are no check engine lights or any other indicators, other than showing up during a scan!
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09-28-2021, 08:13 PM | #95 | |
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09-28-2021, 08:28 PM | #96 | ||
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GTS everything with CS EDC The problem is that I'm running full E85 so all of the flaws are coming out due to the additional power
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09-28-2021, 10:19 PM | #97 |
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Take a look at my post above, try running the 295's if you're on 285's, 305's would be better for your power level. E85 usually has a lot of added timing with a lot of that able to come in strong at low RPM's. Even with larger tires you probably need to taper below 3k.
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09-28-2021, 11:17 PM | #98 | |
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I'd vote on the poly diff bushing + brace as the next step in that case. Some G80 spec PS4S tyres would do some good too, if you have the wheels for it (they fit CS wheel sizes, maybe ZCP too?), just for the extra traction. I'm sure those tyres are a big reason for the traction and sharp turn-in that the new model is praised for. |
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09-28-2021, 11:29 PM | #99 | ||
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Tyre Reviews seemed to like them:
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09-29-2021, 07:20 AM | #100 |
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To the OP, I love the 04 cobra. I'm just curious what you think of the power in your cobra to the m4? Which would win in a race? I don't know if your cobra is modified.. I've been in some amazing kenne bell cobras that were just sick!
I recently bought a '18 m4 zcp and am in the same boat as you still trying to learn how to drive it. I'm tuned on bm3 stage 2 . I'm thinking of reducing torque in 1-2nd gears so I can utilize them more. At 50 mph the car breaks loose the tires on some of the old slicker roads where I live. But I absolutely love this car! Amazes me everyday!
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10-16-2021, 08:53 PM | #101 |
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Just picked up a new 2020 M4 Heritage edition stock MPSS. Only time I slip is when it's cold and wet. However I never drove any other M4 -
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10-16-2021, 09:11 PM | #102 |
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All I can say is get used to applying a smooth throttle. Get used to how much intervention the car applies to your driving. Once you get used to that try the MDM, M seting.
I wouldn’t not go full non-nanny unless you are really experienced. I had a Corvette C7-Z06, I damned near recked that car burning the rear tires off on the way to get new tires.
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