I know what you mean by failure problems, but with my setup, i'm not worried about that at all. If the meth or alky injection setup fails on me, that sucks...I just won't have the power I want. It'll just pull back the timing and establish in itself a tune for the gas I have in the tank all in a matter of 3-5 pulls or a few miles of driving.

So in my case, the 'failures' aren't really an issue. It's the setup that would be a 'pain' so to speak, but it doesn't seem like any more of a pain than switching everything over to E85. In fact, I have a complete Active Autowerke Supercharger/Alky injection setup, so the change to meth won't be too much of an issue....much easier than going with E85 at least.

 

Similar yes. It isnt like running a methanol fueled car, but there is some washing. I change my oil often enough that this shouldnt be much of an issue. I plan to have a few of my oil samples analyzed as I would like to see the ethanol content of them after my standard change.

 

I guess the kicker will be if the ecu notices knock quick enough when and if a failure occurs. 3-5 pulls later and your pistons could be melting.

Dsmlink has a knock sensor feature, where if the timing is pulled more than X amount that I set, the check engine light flashes at me, and I pull off the gas. It has been known though that this is a delayed process as by that time it could be to late considering how fast everything happens during a pull.

Dsmlink pulls timing the same way when it see's knock, just like your system. The problem is the lean condition during that pull. The ecu only see's timing retard, not lean conditions. Staying into the throttle will just make it pull more and more timing because there is obviously something wrong.

My point is, I could be just as naive and say, "I've got an ecu that pulls timing, I don't need to worry much about failures because the ecu will retune itself." Have other precautions or viewable gauges to warn you so you can let off the throttle, not just assume the ecu "is taking care of it" and the car is running a tad slower tonight.

 

gas prices ftl

 

The problem I see is that you only go WOT every once in a while. If the ECU must learn then it will take a few pulls before it will ultimately tune itself, and then whos to say things dont change from there. Weather conditions, humidity, elevation, your alky system cutting off, etc, all could change from one day to the next or even one pull to the next. Therefore if the ECU is supposed to be pushing the envelope of knock threshold to begin with, how is it going to nail the perfect safe tune 100% of the time, I just don't see how that will happen.

 

I have no idea how all the electronics, or the science of it works, but i've been told it is the or one of the most advanced systems of timing/tuning out in most any car.

We really don't have anything to worry about, it all controls itself apparently. That's where there's no need for A/F gauges, EGT gauges, etc. We just need a boost gauge and that's it. In the Turbo E46 M3s they have boost and A/F gauges, that's it. The turbo kits for those cars are $40k, so they better damn well be safe and do the trick. Most of them are putting down 800-850whp on 91 craptane w/ meth @ 23 psi I believe. That's it.

If I were to run a 75-100 shot then a lot of the variables would change...the car can't control all that, unless I sent it to Active Autowerke in Miami and had them put on the nitrous file, then things wouldn't be as bad.

Again,
I dont know everything there is to know about tuning; I dont really know much at all. But after reading up on the DME stuff with the E46 M3's computer, I was pretty impressed. The timing system is extremely sensitive, and when say sensitive and intricate I mean its $5k to replace if it goes bad. It better do it's job. As far as lean conditions go, i'm not sure how all that is controlled, but I do know that after reading on the board some, meth/alky injection setups don't have people worried much on there due to the layout of this machine. Why? I dont know, maybe they're just idiots haha, good possibility. But I have yet to come across any threads in the past year where someone's motor has blown due to a failure in the system, I hope that counts for something.