I wonder if the BARO reading being a little off may have something to do with it.. The MAP sensor gives the ECU the barometric pressure reading at key up, then MAP after ignition, so I wonder if possibly the Zchip alters this initial baro-read at key-up? I have tried turning the MBC up & down a little to no avail.

 

It wouldn't be "totatlly false", that would mean you're speaking on behalf of eeeeeveryone that has a reflash.....it would however be a bad assumption I might agree. This coming from guys that say they've never experienced an ASC light problem from just mods, well it just so happens that one of your customers whom i've talked with a little says that he HAS received the ASC light after putting mods only on his car. I just think it's easier to say it hasn't happend than to say it has, especially if you're a biased vendor from any side.... TTP included.

 

Dude ive already quoted the dyno sheets and results twice already Search!!

 

No the baro reading is not altered at key up.

 

Interest read....subscribing

 

I would agree with this dude sort of. I mean isn't this 'chip' just another little map sensor signal modifier with a 'programmable map' (list of substitute values and/or a multiplier) for modifying the map sensor signal along with a 'map' to incorporate rpm data? I would imagine that if one would scan these problem vehicles with a proper OEM compatible scanner ( I don't think a modis would cover it, mine didn't, maybe something like a launch or something like that ) they would find some type of throttle body data mismatch code (map sensor load not jiving with commanded throttle position or whatever) and the traction control system popping an error as a result. Of course you could just pony up an hour's labor and take it to the evil dealer and let them tell you what non obdII errors you have going on. These little piggyback map sensor deals would work pretty well sometimes with old honda speed density systems even though they had the side effect of changing one's timing for the worse usually but now with drive-by-wire throttlebodies and all the constant error checking that's going on it going to be a lot more challenging to get them to work error free.

 

We'll be analyzing some non ASC customer mapping compared basemap mapping tommorrow to see if we find anything that can contribute to reducing or eliminating the anomaly.

 

My bad i didn't place your name till i read it over. TTP Second Zchip car.

 

...

 

That should be interesting.. If you by chance DO find an anomaly in the mapping, hopefully I can make the map adjustment here. Just need to find one of those DB9 or serial cables...

On an unrelated note, while tweaking boost to see if I could get ASC to go away last night, I finally threw an SES lamp. I'm sure it's for overboost.

 

Quick update after getting a few minutes with an ASC compatible CAN scanner.

ASC:

U1417- Implausible coding data from engine
C121c - Torque reduction request signal rejected

Engine:
P1235 - Mass Aiflow Sensor Plausibility ---Note, I had tweaked boost levels higher before this code set, so it may not pertain to the ASC issue.



The two ASC codes were pulled after driving and getting the warning lamps, not during the free rev test from before.

Also, on that note- if the warnings are going off on *certain* people during a free rev, then there is probably something wrong with the car. I have worked on cars a long time, and NO car, high performance or not-even including the Evo 9, sets a warning off during a free rev. This condition doesn't occur on my car when it is stock.

 

You may have simply stumbled on a defect that someone else stumbled on during a free rev test. If you read that thread, there are a few folks complaining about "ASC Off" during free rev and while driving. All without the ZChip obviously. Mystery continues! ZChip may just be exaserbating a preexisting problem with some X's.



https://www.evolutionm.net/forums/sh...4&postcount=65

 

...maybe so. The ASC system is wwwaaaayyyy too sensitive to hp/light mods.

 

A while back, someone got their car replace for that free rev issue and could not find the problem. And the replacement car did the same. He said Mitsubishi sent engineers from Japan to try and fix it too, but could not make it go away so he got his car replaced.

 

Perhaps. Implications - the ZChip may very well be innocent. The fact that not one but TWO stock X got a torque reduction refusal is pretty disturbing. Bad for the X. Bad for all modding. Mystery continues