I was noticing a slight hesitation around 2000 - 2500 rpm under light throttle in 1st through 4th gears. The hesitation was sporadic and happening once about every other day and the check engine light has not come on. So, I decided to remove my XEDE to see if that was the problem. I removed it yesterday and went for a test drive. I immediately noticed an extremely more responsive throttle and boost came on much stronger and sooner.

I don't think the hesitation will repeat with the XEDE removed, but it's only been one day so the jury is still out on that.

But, the improved acceleration, throttle response, and stronger boost makes me question my XEDE. I am running V3.2 and have only a turbo back so V330+ is installed with 93 octane.

I already sent in the XEDE and wiring harness for a checkup to Vishnu for the hesitation and after reinstallation it is still there.


Two things:
1) I want to move up to the V390 package, but I need to find the reason for the hesitation before that can happen.
2) Why the increased throttle response after XEDE removal?

Any ideas?

 

Try this: Zero out your fuel and timing maps. This will make the XEDE essentially pass-thru. Make sure it drives just like stock. It certainly should. This would suggest that whatever hesitation you felt is caused by a mapping issue. Could be car-dependant depending on your mods, gas, etc,. What mods do you have?

-shiv

 

I'll try that this weekend.

My only mod is 3" turbo back exhaust (RnR) with cat.

 

i was just gonna say what shiv said before i read that. i had a similar problem with the v330+ 93 octane map. i believe it to be a combo of two things. one a map/xede issue and one a mechanical issue. the mechanical would be weak motor mounts which cause the motor to "jiggle" a bit. the xede issue seems to be the fuel map. i think that the low load, low rpm cells are probably a little rich and when you get on and off the throttle in that range, it causes some fuel overloading.

i'm not positive on this cause i have my plx hooked up but haven't had time to drop my downpipe to weld a bung so i never datalogged it to double check. plus i upgraded to a v390 93oct and really haven't had that issue to much afterwards. but it is a possibliliy that its a combo of the two. just a thought.

 

I have one of those zero maps, but I was wondering what to do about knock protection. On my 91 octane Xede map I have a box that reads 20 in all of the hexs. In the zero pass through map there isn't a knock protection box with 20 in the hexs. Does that mean that there is no knock protection?

 

IIRC you are supposed to leave the knock protection at 20 at all times - at least that was the case with V2 firmware...

l8r)

 

I know that, but the Zero map that comes with the Xmap does NOT have the knock protection hex box with the number 20 in it. So I am asking do I need one if I am using the Xede as a pass through with a zero map?

 

it wont matter either way. Run it which ever way is easier for you.

 

yea and if still runs crappy check your ground wire for the Xede. I had a very similar problem when I had an Xede, was just a loose ground wire.

 

OK, I just reinstalled my XEDE and before zeroing out the fuel and timing, I decided to reload the 93octane nonsmart. After loading, I then "download and show maps on XEDE. I then received an error message:

"XMap and XEDE data does not match."

What does that mean?

 

It's a bug in the software.

 

OK. I zeroed out the fuel timing and went for a test drive.

1) The car does not drive like stock and still feels sluggish on throttle response and boost.
2) The slight hesitation under partial throttle now just happened on full boost in 2nd gear and scared the crap out of me. The sudden loss of power was nearly instantaneous and lasted for a split second and then power came back. When it happened, the car took a nose dive as if I slammed on the brakes.

I checked my ground and it's good. After the incident I wiggled the XEDE wires with my hand and could not repeat the incident.

I'm at a loss. Any help?

Is it something mechanical?

 

It sounds like you hit boost cut. Remember, with the XEDE controlling boost, you can (depending on your boost map) see more boost than stock. And sometimes (especially on 03-04 Evos) run into boost cut at round 23psi. Do you have a boost gauge?

Shiv

 

...OR, it is the boost wire wiggling loose. This will cause the car to misfire, and sputter as it momentarily makes contact. Make sure you have that secure.

 

Have you double checked to make sure the green boost wire is
not connected to the green idle wire. It's very easy to invert the plug
and make that mistake.

I know it's a shot in the dark, just trying to help.

I've had the (V3.2 SMART-Disabled Maps) V330+ 93 Octane for
a few months now and I love it.

I hope that you get it working right, because it's worth it.













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