I have to say the the xede has more control over the evo then ANY COMPUTER OUT right now. The AEM will be good as well as the others. I called AEM to talk about it and they even said to wait to people get it figured out. Shiv was on the ball with this car and I think he knows more about the computer then any tuner so far.

 

The computer is essentially a 2G DSM ECU with a few more extra features like the clutch input to the ECU that momentarily changes the air to fuel ratio for better emissions, the variable fuel pump voltage controller, the intercooler sprayer controller, better boost control, different timing and fuel maps, etc...

 

the problem with the EVO owners is not how we don't want to do our own work, there IS NOT A GOOD COMPUTER YET. I am talking DSMLink, AEM, Tec II, Motec, or anything else worth a crap for this car but the xede. Ya, you may hate it but it does more then anything else so far. In 6-8 months that will not be the case and AEM should be the computer to have.

 

Yep, but when the AEM comes out and you make a drag race map that runs the IC spray when the tps is over 50% and it sprays the whole run would that not rock? Or what about having a save gas map that runs say 9 pounds of boost and get 30mpg? It's there it just has to be done.

 

Are you talking about the AEM EMS here? If so you're missing a lot of features.

 

I don't have to show anyone my backgound to justify what I know. Bottom line this thread was made for a quetion and I answered it to the best of my knowlage. And Yes english is not my 1st lang so make fun of my spelling all you want. Fact of the matter is I still made very strong power with xede and cat back. I would not be able make the same power with a S-AFC and a cat back and MBC or EBC. I would be down alot and with a lean A/F compared to my tune. Just because I'm smart enough to know my limitions on tuning and can afford to have the best in the bizz do the dirty work for me does not mean I don't know anything. Just means I'm not ready to have to rebuild my brand new car with only 4000 miles on the clock, from learning the hardway.

But if I had a cheaper car I would be more gun ho about doing my owen tuning.

Eric

 

Shape the motor looks good!! Why did you not o-ring the block?
Off your link you posted.

 

There is no need. If you want to go for 600hp, sure, go ahead and O-ring. Below that, just use ARP head studs and a good head gasket (stock is good for the 400hp to 500hp range). If you blow your headgasket, chances are that if you had O-rings, you would have blown a hole in your piston instead.

A headgasket is like a fuse. It will be the first thing to go when you detonate badly. If you keep all that pressure inside the combustion chamber with an O-ring, you will blow a hole in something else.

 

No, I'm talking about the stock Evo VIII ECU. This stuff is all covered in the Evo Technical Manual.

 

Got ya!

 

I wouldn't know. I don't drive an Evo, nor do I care much about them. At least I'm on the same page now.

 

Uh, where do I start. Okay, here goes: The XEDE actually manipulate the raw knock sensor signal to prevent excessive retard under sudden transient conditions. It also delivers an acceleration enrichement during said load transients to prevent the momentary lean/dead spot often encountered with fuel-only tuning. It also offers full 3D mapping of boost which means that the boost spike that EVOs often see when their exhaust is opened up can be eliminated. Boost can also be programmed to taper just before redline to prevent the knock events that usually occur when whacking against the fuel limiter. The XEDE also acts as a MAF filter, smoothening out extraneous MAF noise which impacts subjective engine smoothness. Throw the ability to control *timing* in 3 dimenstions which is critical to making consistent power in octane limited situations (I can't believe some self proclaimed internet tuners are suggested that this isn't necessary with bolt-on parts ), realtime map switching via toggle switch, and half a dozen other features that I'd rather not disclose yet and, yes, the XEDE will outperform any AFC/EBC combo. In fact, it even out-performs the $3000 TEC3 stand-alone system I use for reference when starting application design.

Regards,
Shiv

 

So can it do everything the AEM can do? The reason I ask is because having a map that get 30mph but has less power then stock would be nice, also what about controling the IC Spray can the xede do that? I am not trying to be a *** I just do not know the power of it, I have worked with the tecIII on a turbo NSX and it works great.

 

The XEDE can not account for increased injector dead time when you upgrade to larger injectors. Accounting for injector dead time is a huge part of getting a car to run right with larger injectors. The XEDE also can not raise your rev limit. It doesn't have nitrous controls (as far as I know). The EMS also does datalogging in RAM without a laptop.

The AEM definitely has more features than an XEDE. It is also a whole lot more difficult to set up to get the car to run right in all conditions. The base AEM maps are pretty much crap. So really, I think that there is room for a product that has good on-the-fly adjustability, yet still maintains the drivability of the stock ECU.

The XEDE may fit that bill. I just think it is too expensive for a piggyback.

 

No, it cannot do everything the AEM, TEC3, or other stand-alones can do. It only has one GPO for things like water injection, NOS control, etc,. But using it for IC Spray is not a problem. There is already an output on the XEDE harness to drive a water spray pump. The software even has water spray parameters to dictate under what conditions the water spray should activate and how long it stays on once triggered. Real easy stuff. Go ahead and download the free software (XMAP v.2) and see for yourself.

Shape GSX writes..
That's only if the injector you are uprading to needs to are *much bigger* than stock, mechanically slower to respond or more susesptible to voltage fluctuations. In that case, adjusting min. injector on-time, voltage compensations, etc,. is useful. However, for simply installing drop-in 650-750cc/min injectors, the MAF trim feature in the XEDE has proven to be enough to acheive perfectly stock drivability characteristics. For those wanting to install 800+cc low impedance aftermarket injectors, a stand alone with dedicated peak and hold injector drivers is the way to go.

Regards,
shiv