Vishnu ECU Reflash update
#1
Evolved Member
Thread Starter
iTrader: (20)
Join Date: Mar 2003
Location: Danville/Blackhawk, California
Posts: 4,941
Likes: 0
Received 0 Likes
on
0 Posts
Vishnu ECU Reflash update
Hi guys,
Many people have been calling and email us regarding the status of our Lancer EVO ECU remapping services/products. We are sad to announce that its release is currently on hold. And it will be so for the ndefinate future.
We've been holding back on disclosing the following info until our initial findings were verified by Technosquare (the US distributor who sells the Techtom reflashing system that just about everyone uses to reflash the EVO ECUs).
Here's what Technosquare found: On a approx 30% of all the reflashed ECUs tested by Tadashi at Technosquare, there was an issue with bad ROM information being written to the ECU. This resulted in unusually high ignition advance numbers at low rpm/low load conditions.
Those who have been following the evolutionm.net forum might remember us discovering this problem months ago on one such remapped ECUs that we tested (and OBD-II logged) on our dyno. We didn't not want to jump to conclusions with regards to this not being an isolated problem or not until this problem was reproduced by Tadashi at his facilities in Southern Calif. As of last week, it was indeed reproduced.
Currently, Technosquare and Techtom Japan are trying to figure out why this problem is occuring with some US EVO ECUs. They have even discovered that flashing an EVO ECU with what is supposed to be a stock EVO ECU ROM file, has resulted in this problem. In other words, what is being written into the ECU, in some cases, is bad information. We suspect another register has been added or subtracted from the ROM code in some of the ECUs, resulting in abberent computations/output.
As it stands, Techtom is is no longer selling the US EVO 8 reflashing system until this problem is solved. They will also be notifying the current Reflashed ECU distributors of the problem and advising them take the necessary steps to isolating the issues.
We will continue to work with Tadashi and Techtom on getting this problem resolved. Once resolved, we will be happy to offer reflashed EVO ECUs to our customers. But until then, back to your regularly schedule programming...
Best Regards,
Shiv
PS. This info only pertains to US EVO reflashed ECUs. It has absolutely nothing to do with any of our WRX remapped ECU offerings.
Many people have been calling and email us regarding the status of our Lancer EVO ECU remapping services/products. We are sad to announce that its release is currently on hold. And it will be so for the ndefinate future.
We've been holding back on disclosing the following info until our initial findings were verified by Technosquare (the US distributor who sells the Techtom reflashing system that just about everyone uses to reflash the EVO ECUs).
Here's what Technosquare found: On a approx 30% of all the reflashed ECUs tested by Tadashi at Technosquare, there was an issue with bad ROM information being written to the ECU. This resulted in unusually high ignition advance numbers at low rpm/low load conditions.
Those who have been following the evolutionm.net forum might remember us discovering this problem months ago on one such remapped ECUs that we tested (and OBD-II logged) on our dyno. We didn't not want to jump to conclusions with regards to this not being an isolated problem or not until this problem was reproduced by Tadashi at his facilities in Southern Calif. As of last week, it was indeed reproduced.
Currently, Technosquare and Techtom Japan are trying to figure out why this problem is occuring with some US EVO ECUs. They have even discovered that flashing an EVO ECU with what is supposed to be a stock EVO ECU ROM file, has resulted in this problem. In other words, what is being written into the ECU, in some cases, is bad information. We suspect another register has been added or subtracted from the ROM code in some of the ECUs, resulting in abberent computations/output.
As it stands, Techtom is is no longer selling the US EVO 8 reflashing system until this problem is solved. They will also be notifying the current Reflashed ECU distributors of the problem and advising them take the necessary steps to isolating the issues.
We will continue to work with Tadashi and Techtom on getting this problem resolved. Once resolved, we will be happy to offer reflashed EVO ECUs to our customers. But until then, back to your regularly schedule programming...
Best Regards,
Shiv
PS. This info only pertains to US EVO reflashed ECUs. It has absolutely nothing to do with any of our WRX remapped ECU offerings.
Last edited by shiv@vishnu; Aug 23, 2003 at 10:24 AM.
#3
Evolved Member
Thread Starter
iTrader: (20)
Join Date: Mar 2003
Location: Danville/Blackhawk, California
Posts: 4,941
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by hotrod2448
Has anyone in the U.K. or Japan flashed their ECU's and , if so are they running into the same problem?
Has anyone in the U.K. or Japan flashed their ECU's and , if so are they running into the same problem?
Shiv
#5
Re: Vishnu ECU Reflash update
Originally posted by shiv@vishnu
Those who have been following the evolutionm.net forum might remember us discovering this problem months ago on one such remapped ECUs that we tested (and OBD-II logged) on our dyno. We didn't not want to jump to conclusions with regards to this not being an isolated problem or not until this problem was reproduced by Tedashi at his facilities in Southern Calif. As of last week, it was indeed reproduced.
Those who have been following the evolutionm.net forum might remember us discovering this problem months ago on one such remapped ECUs that we tested (and OBD-II logged) on our dyno. We didn't not want to jump to conclusions with regards to this not being an isolated problem or not until this problem was reproduced by Tedashi at his facilities in Southern Calif. As of last week, it was indeed reproduced.
https://www.evolutionm.net/forums/sh...threadid=29914
Trending Topics
#8
Evolved Member
iTrader: (13)
Join Date: Nov 2001
Location: Maryland
Posts: 847
Likes: 0
Received 0 Likes
on
0 Posts
I hope they get this problems solved soon. Even if they do get it fixed, the XEDE (or the UTEC when released) is the way to go in the long and the short term! I Just wish the price would go down a little!
#9
Re: ECU Reflash update
Originally posted by shiv@vishnu
We've been holding back on disclosing the following info until our initial findings were verified by Technosquare (the US distributor who sells the Techtom reflashing system that just about everyone uses to reflash the EVO ECUs).
We've been holding back on disclosing the following info until our initial findings were verified by Technosquare (the US distributor who sells the Techtom reflashing system that just about everyone uses to reflash the EVO ECUs).
Last edited by Señor Info; Aug 22, 2003 at 05:42 PM.
#10
Evolved Member
iTrader: (3)
Join Date: May 2003
Location: Scottsdale AZ
Posts: 574
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by ez76
So roughly 70% of WORKS customers have purchased the Brain flash, and 30% have purchased the Brain Damage flash?
So roughly 70% of WORKS customers have purchased the Brain flash, and 30% have purchased the Brain Damage flash?
Honestly, this revelation does not affect the WORKS ECUs, right? I just sent mine today.
#11
Evolved Member
iTrader: (5)
Join Date: Sep 2001
Location: SF Valley, So.Cal
Posts: 581
Likes: 0
Received 0 Likes
on
0 Posts
how it sounds technicaly this will effect any company using..
Technosquare (the US distributor who sells the Techtom reflashing system that just about everyone uses to reflash the EVO ECUs).
so you will have to ask works if they are using technosquare to reflash the system. if so then problems do apply
Technosquare (the US distributor who sells the Techtom reflashing system that just about everyone uses to reflash the EVO ECUs).
so you will have to ask works if they are using technosquare to reflash the system. if so then problems do apply
#13
Evolved Member
Thread Starter
iTrader: (20)
Join Date: Mar 2003
Location: Danville/Blackhawk, California
Posts: 4,941
Likes: 0
Received 0 Likes
on
0 Posts
FWIW, the problem manifests itself as excessive ignition advance at low rpm, low load conditions. We isolated the problem to occur as low as 2000RPM where ignition advance numbers (at light load) were 45+ degrees BTDC. These conditions are not seen during a dyno pulls and would go otherwise unnoticed.
That said, the only easy way to properly detect it is to use a OBD-II scan tool and actively monitor ignition advance. Det cans will may also reveal minor rattling during such low load conditions. FWIW, a standard unflashed EVOs we've tested have shown max advance of 32-36 degrees BTDC under said conditions.
Regards,
Shiv
That said, the only easy way to properly detect it is to use a OBD-II scan tool and actively monitor ignition advance. Det cans will may also reveal minor rattling during such low load conditions. FWIW, a standard unflashed EVOs we've tested have shown max advance of 32-36 degrees BTDC under said conditions.
Regards,
Shiv
#14
Evolved Member
iTrader: (2)
Join Date: Feb 2003
Location: San Francisco, CA
Posts: 577
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by BadBoyBeltran
This does not have anything to do with the WORKS reflash program, right?
This does not have anything to do with the WORKS reflash program, right?
-- DavidV
Last edited by DavidV@WORKS; Aug 22, 2003 at 10:39 PM.
#15
Evolved Member
Thread Starter
iTrader: (20)
Join Date: Mar 2003
Location: Danville/Blackhawk, California
Posts: 4,941
Likes: 0
Received 0 Likes
on
0 Posts
Anyone with a reflashed ECU should check their max ignition advance numbers with a OBD-II logger to see if their ECU is generating abberant advance behavior. Especially since the majority of the reflashed EVO ECUs on the road have been reflashed by the Techtom reflashing system.
my 2c,
Shiv
my 2c,
Shiv
Last edited by shiv@vishnu; Aug 22, 2003 at 11:33 PM.