Scud Ing E-Diff bypass review

How is this different than just completely turning off CST (remember, there's regular CST off and then completely CST off by holding the manetino for a couple of seconds).

 

How do you do that? There is nothing in the manual about holding it ... only CST off mode where it deactivates it.

Also, I read about scuding swiss bypass that it still keeps the stability and traction control enabled ; how is that possible with the e-diff disabled, I thought e-diff is doing all that ?

Quote:

" Even if the E-DIFF is disabled, the F430 retains all brake & traction control systems such as CST (ASR / VDC), ABS, ESP and EBD."

 

I ordered it too but have yet to install it. I got the permanent off version with the bypass plugs...

 

I am curious too! I will possibly make a post about it once I try it next week hopefully.

 

I still don’t understand why anyone would want to disable the ediff as you will have an open diff.

a friend installed the bypass which resulted in his 430 becoming a “one-legger” out of corners on track which severely impacted drive out of the corner.

 

The question I have is why would anyone tracking a car install a ediff bypass. I'd never do that

 

ediff warning lights and car going into limp mode. Needed the bypass to salvage the track event.

 

I agree. I only got it because it seems I may be having e diff issues from my aftermarket 20" wheel/tire setup. But I will confirm this soon.

As for tracking a car, I personally would not want an open diff on the track either, so I would not want to use the bypass on the track IMO.

 

Yes, it feels more playful on the street at slow corners because the diff is not locking up in the corners reducing the amount of under steer. But I’m sure you’ll experience the one leg situation coming out of corners in the street depending on how aggressive you are on the throttle.

When installing a clutch type LSD on my other sport cars I noticed a reduction in playfulness as well but was rewarded with increased corner exit grip exiting under heavy throttle and a stable rear end under hard braking applications.

but as you said, if you’re happy with it that’s all that matters.

 

Try it coming out of a corner…

I’ve had a few emails back and forth with Stefan about the bypass and there is some inherent amount of lock still available with the bypass, but he was unable to quantify how much. But for sure the amount of lock in the bypass diff will be significantly less than a fully functioning ediff.

 

Nothing a little opposite lock and throttle can’t fix

 

Which version do you have? I have the smart e-diff bypass version and you can enable/disable the e-diff via a keychain remote. You can also program it to disable the e-diff in certain manettino settings. I guess I’m in the minority in that I’m not a fan of e-diff on the track.

As you correctly noted when the e-diff is disabled you have a standard limited slip rear end. Like you said, think positraction in a 60s muscle car. It’s not an open differential as others have suggested.


Sent from my iPad using FerrariChat.com mobile app

 

The following statement was directly from Stef when I inquired about whether the disabling the ediff will function as an open diff.

“The SEB ECU will allow you to disable the E-DIFF and your differential will become a mechanical LSD but with limited lock ratio, less than a 100% mechanical LSD. It's very difficult to evaluate exactly how much and when the differential will lock”

will you still have some lock with the disabled ediff? Yes, but the amount is unknown. But from the experience of other 430 owners who track their car running in the fast group with R compound tires, the disabled ediff functions more like an open diff.

To me, this makes sense given the ediff uses a hydraulic actuator to engage the friction discs,clutch plates to lock the diff rather than a mechanical mechanism (e.g., a spring) in a mechanical lsd. Disabling the ediff causes the e diff solenoid valve to stay closed so no hydraulic fluid flows through the e diff. Without the flow of hydraulic fluid how can the hydraulic actuator lock the diff?

 

his picture shows he has the permanent disabled version.

 

Although I won't disagree. I am wondering how many of the guys saying it feels like an open diff on the track are just comparing it to what they were used to feeling with a fully functional e diff. Maybe it's just a different feel than they were used to? No doubt this diff was designed to work with the e diff of course. To the OP who said he laid down some rubber, how much was it? was it a few inches? or were we talking a few feet? if it was a few feet, not many open diffs would be able to do that.