I don't have much experience with the e-manage so I can't give much of a comparison. All I can say is that the EVO version of our XEDE has been designed specifically for the EVO. This means that we have addressed much, if not all, of the unique traits that the EVO ECU possess. From it's stepped spark timing ramp-up rate, lack of acceleration enrichments, etc,. and developed software-based features to accomodate/improve upon these traits. For example, even our newest version of boost control (which we are testing right now) controlls boost by making offsets to the factory boost map. In other words, the XEDE intercepts the PWM signal from the ECU and modifies it before it goes out ot the boost controll solenoid. I don't think this has ever been done before in a commercially available boost control system. The user will be able to put in x bar/psi offsets as a function of RPM and Load in the XEDE boost table. This will allow the user to dial in any boost curve shape they want without loosing the over-temp and knock-triggered boost level reductions that are unique to the stock EVO engine control system. Combine this with active knock signal attenuation, realtime map switching and intelligent water spray control (also in testing) and the XEDE represents a uniquely effectively and flexible approach to EVO engine management. Add to that new software features/refinements that are constantly in the works and I don't see how a one-size-fits-all piggy-back/boost controll combo from GReddy is going to be comparable. I guess only time will tell.

Compared to the WRX ECU, the EVO ECU is much easier to understand and associated problems are much easier to solve. It does not possess the same knock learning matrix that sent us back to the drawing board so often during early stages of development/tuning. As with the WRX, being able to read some of the relevant factory ecu tables has helped us to get from point A to point B pretty quickly.

Just my 2c,
shiv

 

Hi there,

The idea behind our kits is to have them operate off of thoroughly tested base maps. This is why I'm travelling all across the US to tune EVOs with different octanes/altitudes/conditions/etc,. Custom-tuning will likely provide the absolute best results but, in the end, I suspect we're only talking about the 2-3% of output. If that is required, come out to Altered Atmosphere this weeked. I'll be there tuning some EVOs on a dyno. I'll be bringing a couple extra kits with me in case any folks like what the see and want the same. Just drop KK (evolutionm admin) a PM if you're interested and he can give you details.

Cheers,
shiv

 

this is an excellent thread - here is my free bump to keep it at the top and active. having multiple knowledgeable vendors out there is a great thing for the Evo community - thanks to those of you that shed light on the inner workings of the Evo. This weekend wrench-turner surely appreciates it!

 

Excellent! You are whittling away at any doubts I may have had about the XEDE unit. Suffice to say that I will be seeing you at the dyno at Matrix Engineering here in Portland. Looking forward.

 

Hey shiv, Since you can add stuff to the XEDE how about a switchable anti-lag? That and a promise of the system being optimized for high altitude would guarantee my order!! Thanks again

 

hey bigd, i just had the XEDE installed last week and I can definitely feel the difference. Need to get to a dyno and get hard numbers still. Vishnu tuning and the staff have been helpful and i recommend the XEDE to anyone looking for a nice gain in power while still maintaining drivability and safety margin.

 

Can you make it down for the dyno day at Matrix Engineering? Shiv will be tuning, they might be able to get you on the dyno. I will be getting the XEDE and some Shiv dyno time.

http://matrixengineering.cc

 

man, my head hurts after all that...

 

shiv,

you've just sold me... I now believe that you're probably the best ECU tuner in the United States. I was worried initially with regards to piggybacks because my friend's WRX was using the TurboXS Unichip and it didn't work very well. He had to make so many trips from New York City to Maryland for a retune it's scary. Later he changed the unit to a Link, which costs a lot more but it worked better but the car had rough idle... I was then thinking about the Works ECU, but david or whoever the dude is doesnt seem to know as much.

I just have one last question before I order the XEDE from you. Is it possible to not have rough idle with let's say a car with an equilavent of a Stage 3 Evo? for example upgraded injectors, turbo upgrade etc.

 

Oh man! Well, I am the marketing guy at WORKS, not the ECU programmer. I know a fair bit, but obviously not everything. If you have technical questions -- and this goes for everybody -- don't hesitate to send an email or give us a call (415) 902-7791. If I can't answer your questions, one of our engineers most definitely can.

The engineers behind WORKS' ECU program would love to spend as much time on the board as myself or Shiv, but they're off developing ECU maps. Occasionally they'll spend a free minute or two on the board, but it's much better to catch them by email or phone.

All you had to do was ask!

-- DavidV

 

The XEDE does not induce any drivability issues as it is usually mapped to only make fuel/timing changes above a certain load. Below that, it's essentially pass-through. We have not yet experimented with larger injectors for the EVO but it should be no problem to achieve stock-like drivability since a simple MAF offset is all it takes to compensate for the higher fuel flow rates. At least that has been the case with every other car (WRX included) we've tuned with the XEDE.

I'm currently in DC on a EVO tuning trip. I tuned a few XEDEs yesterday on the dyno at Altered Atmosphere. These represent the first out-of-state XEDE applications. So far so good with respect to drivabilty and performance

Best Regards,
Shiv

 

Hello, Im new to the website. I just picked up my evo yesterday. I am absolutely amazed at the cars performance so far, I never would have expected this. ( I call it a 4 door Ferrari) After reading this thread I realize some of these custom tuning piggy backs etc or any other mod should be dyno tested first....anyone in south florida work with Vishnu? Id like to get the piggy back or a computer BUT....Ive been down this road with my T Type with the Red Armstrong chips that always ended up giving me detonation and i was never really able to get the car "right". I also have an 01 Lightning, and a local shop here, Razor's Edge, modified my truck with all the mods and nitrous and dialed it all in on their Mustang Dyno...so I felt comfortable and it runs like a scalded cat....I would buy the vishnu stage 0 or even stage 1 when it comes out, but my concerns are dialing it in properly and I wouldnt risk dialing it in myself...anyone is South Florida familiar with vishnu product with a dyno to dial in an AWD car?

 

For those interested in seeing some of the XEDE results and hear from owners that attended our dyno day, visit:
https://www.evolutionm.net/forums/sh...threadid=24551

Mark

 

Hey SHiv--
Just an idea.

Why not setup and email list to keep us all up to date on release dates, products and new development??

I think there would be alot of us interested in this since this seems like the way to go for the evo.


I was thinking abou the S-AFC but I have been looking for a system like yours that will do all.

 

Just for the record. The improvements to overall drivabiity with the XEDE are incredible. You can check out the thread KK posted above for numbers but those are only measurements. The real test is driving the car and you cannot feel the improvements by reading the graph. I am totally impressed and fully satisfied with the results.

I have not heard one negative comment from anyone who has installed the XEDE.

My understanding is that we can soon expect to see the addition of a boost control function added to the XEDE.

The XMAP User Tuning Software offered for the XEDE provides the means to install newly developed MAP you can download from Vishnu's website. It will also allow you to tune your car to the ragged edge if you are so inclined. Just don't expect Vishnu to provide that kind of setup for public consumption in the form of a mass market MAP download for user installation. Can you say manufacturer liability concerns?

I have not seen anything short of a complete Engine Management System, costing significantly more money and requiring extensive invasive installation procedures, that will offer the tuning capabilities that XEDE offers. And unlike a fully independent system, your stock ECU hardware and software remain installed and intact allowing removal of the XEDE in a matter of seconds.