You guys jinxed me. This morning on the way to work my car felt real slow, it was almost hard to pass people on the highway. So, I remebered this thread and accelerated to see what my boost would hit, though I could only get about 11.5 out of it. At the next red light I turned of the car waited a couple of seconds and restarted. When I left the light I was able to hit full boost again. I am running an older firmware I believe is ver 1.6.xxx and has a date of Sep 2003. This was the first time the XEDE has done this to me. It has a little over a day of "active time". Would the older firmware be causing this?

 

It is unlikely that any of this is a firmware issue. I suspect it is a simple grounding issue. Reterminating the ground and perhaps adding another ground strap should fix the problem.

ogvw-- what did you use for the extra ground?

Shiv

 

and all this time i thought it was my imagination !
hey shiv, is this ground problem also affecting the idle smoothness. it's been running butter smooth until the last few days. almost like the issues in portland but not as severe. it doesnt stall like before (yet).

 

On about the tenth cycle my car would only boost to about 12-13 psi (Subzero 91 octane). usually it goes between 20-22psi. I have had the EXED installed for about a week and it has performed fairly well (just a very minor idle lump compared to stock) but this happened to me for the first time today. I pulled over and swiched maps, and no difference.

P.S. Shiv - the light was flashing red (or orange couldn't really tell) and my ground is soldered (but I only have it connected to one ground source). Please advise. Thank you.

James

 

The ground has nothing to do with idle smoothness. It only has to do with boost control. In fact, if you rely on factory boost control, you can leave the ground completely unattached.

Shiv

 

Hi James,
The idle lump has been fixed with the firmware update (just updated 12 XEDEs today at the GA dyno day). I'm still looking into the power-on issue with the XEDEs that few have mentioned. Could you PM me the serial number on your XEDE unit?

Shiv

 

PM'ed you the information you where looking for. Thank you.

James

 

i'm stuck in colorado right now... Silly flight was late getting into Denver so i missed my connecting flight back to CA. So I'm off tomorrow instead and will dig around some more...

shiv

 

I seriously doubt it is a grounding issue. If that was the case, a key cycle would not make it function again. Plus, it would stop controlling the boost solonoid intermitently as the ground was loosing continuity. I have never had any problems with the Exed acting funny once a map loads. It is like every so often the map just doesn't load and the Exed is in "bypass mode". Cycle the key and it works perfectly again. To me it is not a really big deal, just an inconvinience. The Exed made such a huge difference in the way the EVO makes power, I still love it...

 

I’ve been experiencing this same problem, only much more frequently. It happens almost everyday. It was happening so frequently, I decided to drive around with my glove box off all the time in order to visually inspect the light on the XEDE. When it happens, it seems the XEDE refuses to power-up – no lights, nothing. I’ve found a temporary solution: I have to shut down the car, turn the key to the “off” position, then turn the key to the “acc” position, let it stay in the “acc” position for 20 to 30 seconds, then turn the key to the “on” position, let it stay in the “on” position for 5 or more seconds with the light flashing orange before starting the car. At times I have to cycle the key from the “off” position to the “acc” position to the “on” position several times until the lights on the XEDE are flashing orange before starting the car. At times, very seldom, even when the lights are flashing orange, the XEDE will still not load (turn the light green), after the car is started (it stays flashing orange). At this point, I have to start over – “off”, “acc” 20 to 30 seconds, “on” for 5 or more seconds, start car.

This has been a minor annoyance. I don’t mind waiting for the light to display and cycling the key. However, I would like to attach my glove box. Is there a way to mount the light on the XEDE to a remote location so I don’t have to drive around with the glove box off? I’m assuming I have the latest firmware update. My XEDE is new. I just ordered it 3-4 weeks ago. Has any progress been made in finding a solution.

BTW, I still love the XEDE. I have a Buschur 3 inch turbo back exhaust and K&N drop in filter. I’m running the stage 0+ 93-octane map. The XEDE has literally transformed the car. I can’t wait to step up to stage 1+. Please let me know if anyone finds a solution to this issue.

Thanks.

 

We need to get to the bottom of this strange problem so we get it rectified. It seems like a connection, since its more apparent in some cars than others. Since I've owned my XEDE, I've only had it happen three times ever.

 

it happened to be twice right after i had it tuned by Shiv up north, been ok since then (for the past 2 weeks)

 

Thanks Noize,

It just happened again to me today (and yesterday). After lunch, on the way back to the office, I got in the car and had to cycle the key several times in order to get the XEDE to boot. Do you think it may be a bad harness? It's weird, because once it boots, everything is fine. When this first happened, I thought it was a connection. I triple-checked everything. It's all connected properly. It seems to be worse when I have driven the car and the car is still warm. It generally doesn't happen first thing in the morning. I hope someone finds a solution soon. Weird!

 

What would be really helpful is if we can get one of these cars to Shiv's shop or at least to a dyno day. A car like yours that does it so often should be easier to nail down, as you can actually replicate the problem.

 

I posted elsewhere that the state the xede goes into when this problem occurs is an orange flashing light on the xede....could someone confirm thiers is also doing this..