I believe Kraftwerks is looking into a solution for this issue. Not sure what progress they've made so far.

 

yes, i read all the post here and seems im the only one with several broken bolts.... i dont understund why you are saying you have several times hit the rev limiter... and below when you say your limiter is fairly soft you RARELYhit it.... ????


hope with the stronger bolt whe are doing custom dont have problem. i will upload pictures when i have all ready

 

this.
i don't understand what soft rev limit means too.

i am getting my kit here soon hope u can explain further, so i can have evans do me a soft rev limiter too. lol

 

It's not anything special or specific that he did. It's just that when I do hit the limiter, it isn't a very hard, abrupt cut. It lets off kind of softly. I think it has to do with cutting fuel and not ignition, but I'm far from an expert on these things.

Some guys in the past spoke of their hard limiter, I guess on the flashpro, or just how it is setup. I'm really not certain, but it is worth getting some more data on.

 

Why even risk hitting the limiter seriously. If your max rpm is 8500 then set limiter at 8600. If you have an ap1 then set it at 9400 if you want to absolutely push the maximum revs. Mine is set at 8600 but honestly if I want to push it I will go to 4 blinks 8400 and shift. It's just not worth risking damaging the blower bouncing off the rev limiter IMO. We have been told that the rotrex blowers don't like it.

 

this.
i don't understand what soft rev limit means too.

i am getting my kit here soon hope u can explain further, so i can have evans do me a soft rev limiter too. lol
[/quote]

I posted a question regarding this in another thread, and I also thought about whether a softer rev limiter would "reduce the damage."

I'm not familiar with Flashpro, but with AEM series 2, you can independently configure fuel & ignition cut based on an initial cut value (%) and a multiplier based on the amount of speed overshoot (%/50rpm). And the percentage represents the fuel & ignition duty cycle that's being cut. In the AEM setup wizard, there are 4 pre-configured options to choose from: soft, medium, hard, and full. A full cut is defined as 100% initial cut at the rev limiter, such that any speed overshoot would purely be a result of inertia. A soft cut is defined by 25% initial cut, and then an additional cut of 9.375% per 50rpm of overshoot. If you do the math, the engine will be at 100% cut at 400rpm overshoot.

I've played with these settings, and you can definitely feel the difference. A softer cut has less of a jolt, and gives you a chance to lift off or shift before the engine is fully cut. However, to me, the trade-off is that because there is allowable overshoot, you should really set the rev limiter at a lower value, which means you may be missing out on some top end power...

 

this.
i don't understand what soft rev limit means too.

i am getting my kit here soon hope u can explain further, so i can have evans do me a soft rev limiter too. lol
[/quote]

I posted a question regarding this in another thread, and I also thought about whether a softer rev limiter would "reduce the damage."

I'm not familiar with Flashpro, but with AEM series 2, you can independently configure fuel & ignition cut based on an initial cut value (%) and a multiplier based on the amount of speed overshoot (%/50rpm). And the percentage represents the fuel & ignition duty cycle that's being cut. In the AEM setup wizard, there are 4 pre-configured options to choose from: soft, medium, hard, and full. A full cut is defined as 100% initial cut at the rev limiter, such that any speed overshoot would purely be a result of inertia. A soft cut is defined by 25% initial cut, and then an additional cut of 9.375% per 50rpm of overshoot. If you do the math, the engine will be at 100% cut at 400rpm overshoot.

I've played with these settings, and you can definitely feel the difference. A softer cut has less of a jolt, and gives you a chance to lift off or shift before the engine is fully cut. However, to me, the trade-off is that because there is allowable overshoot, you should really set the rev limiter at a lower value, which means you may be missing out on some top end power...
[/quote]

Do you have any idea how to see if this is activated, and at what setting?

My setup (Ap2) has fuel cut at 8400, and ign cut at 8500. In the 2step section (which the wizard says you'll have to set values), it doesn't have any sensible values (4600 rpm), so it must not be used, I think.

Learning as I go - I found some additional options on this. My initial fuel cut at 8400 rpm is 25%, with +10.2% per 50rpm.

Ignition cut at 8500rpm, 25% duty, +10.2% gain per 50rpm.

(under Options - Fuel Cut C, Fuel Cut M, Ignition Cut C, Ignition Cut M)

 

Can we get a show of hands from the broken bolts guys what EMS you are using, and your limiter settings (if you can pull them)?

 

Mostly agree. I try not to ever hit the limiter, but sometimes with the music loud I get caught off guard in 1st, or sometimes during a slide it gets a touch away from me.

But hitting the limiter it is a very soft, gradual intrusion. So much so it can be difficult to notice at first.

 

Yes, those are the options that you're looking for. Based on that info, you have the soft cut option for your main limiter.

The 2-step is used as a way to implement launch control. You'll find 2 options: 2step input & 2step max VSS. Basically, you can set the 2step input to "switch is always on" and 2step max VSS to something like 10 mph. With that setup, when your vehicle speed is below 10 mph, your rev limiter will be set to the 4600 rpm that you see (you can also set different values for fuel & ign). Basically you will be able to go WOT and bounce off of that limiter from a dead stop. You can also configure your 2step limiter to be soft, medium, etc.