they said it couldn't be done, ha...
#31
So there's nothing for my 96 car that would bypass the immobilizer? I hate the immobilizer. Lets just say without being too specific, that for the last 3 years of ownership it has been the bane of my 993 ownership experience. I'd love to bypass it if there's a way.
This chip you found won't work on my 96, right?
Thanks,
Steve
This chip you found won't work on my 96, right?
Thanks,
Steve
#32
So there's nothing for my 96 car that would bypass the immobilizer? I hate the immobilizer. Lets just say without being too specific, that for the last 3 years of ownership it has been the bane of my 993 ownership experience. I'd love to bypass it if there's a way.
This chip you found won't work on my 96, right?
Thanks,
Steve
This chip you found won't work on my 96, right?
Thanks,
Steve
#33
"1 chip that does not expect an immobilizer signal"
Right, this has been posted before here on Rennlist, i.e. Just use the
non-immobilizer option DME ECM chip. No relay change is needed,
as posted, just a jumper from pins 30 to 87 which eliminates the
immobilizer control of the #50 from the ignition switch to the starter.
Given all the Porsche DME ECM chip copying being done by the
'performance' chip marketers, a non-immobilizer chip should be
readily available.
"For the life of me I don't understand why this hasn't been common knowledge."
It has been here on Rennlist, not over on the 'Dark Side' where knowledge is
lacking and mis-information is abundant.
Right, this has been posted before here on Rennlist, i.e. Just use the
non-immobilizer option DME ECM chip. No relay change is needed,
as posted, just a jumper from pins 30 to 87 which eliminates the
immobilizer control of the #50 from the ignition switch to the starter.
Given all the Porsche DME ECM chip copying being done by the
'performance' chip marketers, a non-immobilizer chip should be
readily available.
"For the life of me I don't understand why this hasn't been common knowledge."
It has been here on Rennlist, not over on the 'Dark Side' where knowledge is
lacking and mis-information is abundant.
#34
Thanks everyone for the cryptic, super intelligent, overly technical, non-layman like recommendations how to bypass the immobilizer. I don't understand most of what you wrote but will hand it off to someone that will.
#35
I'm not sure what any of this means but I will bring your posts and advice to my indie and see if he can do what you're saying. I will not keep my car much longer if I can't get the immobilizer fixed/replaced/disable/removed/something/whatever. Long story... but it is what it is.
Thanks everyone for the cryptic, super intelligent, overly technical, non-layman like recommendations how to bypass the immobilizer. I don't understand most of what you wrote but will hand it off to someone that will.
Thanks everyone for the cryptic, super intelligent, overly technical, non-layman like recommendations how to bypass the immobilizer. I don't understand most of what you wrote but will hand it off to someone that will.
'97 & 98 do as well, though of a different design unless you have Row car.
'96 does not(unless it's a normally aspirated RoW version), so if you have a '96 the entire ECU would need to be changed to have the luxury of being able to replace the chip. I have heard that the '96 can be reflashed(reprogrammed) but have no experience or knowledge of that.
#36
'95 993 has a user replaceable chip
'97 & 98 do as well, though of a different design unless you have Row car.
'96 does not(unless it's a normally aspirated RoW version), so if you have a '96 the entire ECU would need to be changed to have the luxury of being able to replace the chip. I have heard that the '96 can be reflashed(reprogrammed) but have no experience or knowledge of that.
'97 & 98 do as well, though of a different design unless you have Row car.
'96 does not(unless it's a normally aspirated RoW version), so if you have a '96 the entire ECU would need to be changed to have the luxury of being able to replace the chip. I have heard that the '96 can be reflashed(reprogrammed) but have no experience or knowledge of that.
sr
#37
1. "'95 993 has a user replaceable chip
'97 & 98 do as well, though of a different design unless you have Row car."
2. "'96 does not(unless it's a normally aspirated RoW version), so if you have a '96 the entire ECU would need to be changed to have the luxury of being able to replace the chip."
Hopefully, the above mis-information wasn't found from over on the
'Dark Side' or is repeated hyperbole generally found on the internet
and now mis-informing the Rennlist members?
The '97/'98 993 DME does NOT have a chip like the '95 993.
It must be reflashed which in many cases has resulted in the
ECM no longer functioning properly when scanned by the Porsche
testers and additionally may have problems at a emissions test
because of a problematic OBDII functionality.
Again, all the information on this topic has been posted before
here on Rennlist. One just needs to do a good search!
Bottom line: Please, let's not mis-inform Rennlist members as occurs
over on the 'Dark Side' on an on-going basis, i.e. one poster repeats
hyperbole of another poster! This leads to members here wasting both
time & money in hope of a fix.
'97 & 98 do as well, though of a different design unless you have Row car."
2. "'96 does not(unless it's a normally aspirated RoW version), so if you have a '96 the entire ECU would need to be changed to have the luxury of being able to replace the chip."
Hopefully, the above mis-information wasn't found from over on the
'Dark Side' or is repeated hyperbole generally found on the internet
and now mis-informing the Rennlist members?
The '97/'98 993 DME does NOT have a chip like the '95 993.
It must be reflashed which in many cases has resulted in the
ECM no longer functioning properly when scanned by the Porsche
testers and additionally may have problems at a emissions test
because of a problematic OBDII functionality.
Again, all the information on this topic has been posted before
here on Rennlist. One just needs to do a good search!
Bottom line: Please, let's not mis-inform Rennlist members as occurs
over on the 'Dark Side' on an on-going basis, i.e. one poster repeats
hyperbole of another poster! This leads to members here wasting both
time & money in hope of a fix.
#38
1. "'95 993 has a user replaceable chip
'97 & 98 do as well, though of a different design unless you have Row car."
2. "'96 does not(unless it's a normally aspirated RoW version), so if you have a '96 the entire ECU would need to be changed to have the luxury of being able to replace the chip."
Hopefully, the above mis-information wasn't found from over on the
'Dark Side' or is repeated hyperbole generally found on the internet
and now mis-informing the Rennlist members?
The '97/'98 993 DME does NOT have a chip like the '95 993.
It must be reflashed which in many cases has resulted in the
ECM no longer functioning properly when scanned by the Porsche
testers and additionally may have problems at a emissions test
because of a problematic OBDII functionality.
Again, all the information on this topic has been posted before
here on Rennlist. One just needs to do a good search!
Bottom line: Please, let's not mis-inform Rennlist members as occurs
over on the 'Dark Side' on an on-going basis, i.e. one poster repeats
hyperbole of another poster! This leads to members here wasting both
time & money in hope of a fix.
'97 & 98 do as well, though of a different design unless you have Row car."
2. "'96 does not(unless it's a normally aspirated RoW version), so if you have a '96 the entire ECU would need to be changed to have the luxury of being able to replace the chip."
Hopefully, the above mis-information wasn't found from over on the
'Dark Side' or is repeated hyperbole generally found on the internet
and now mis-informing the Rennlist members?
The '97/'98 993 DME does NOT have a chip like the '95 993.
It must be reflashed which in many cases has resulted in the
ECM no longer functioning properly when scanned by the Porsche
testers and additionally may have problems at a emissions test
because of a problematic OBDII functionality.
Again, all the information on this topic has been posted before
here on Rennlist. One just needs to do a good search!
Bottom line: Please, let's not mis-inform Rennlist members as occurs
over on the 'Dark Side' on an on-going basis, i.e. one poster repeats
hyperbole of another poster! This leads to members here wasting both
time & money in hope of a fix.
Loren, take it up w/ Steve Weiner,
Look here to see the original discussion, post #5
.....
You haven't found a "chip" for your 96's DME because there isn't such a thing. Starting with '96, the "chip" is integral to the ECU. So, instead of installing a chip, you must have performance software installed. That is, a talented programmer/tuner modifies the code in your ECU. And, thus, why the 96+ performance upgrade (software) for a 96+ model is so much more expensive than older models.</strong><hr></blockquote>
A clarification might be needed for these '96-on' ECU's.
These do indeed have a chip inside there,.... LOL, its a PSOP device that is soldered in and epoxied in place unlike the earlier cars which used a 28 pin DIP device that resided in a socket.
Typically these EPROMS and are removed, reflashed, reinstalled and then tested.
The '96 ECU's are very different from the '97 and later ones as this one year used a proprietary Bosch 2-chip set that was replaced, not reflashed. Since these special chips are NLA, these ECU's have not been modifiable. A solution is in the works to aleviate this and enable these ECU's to be reprogrammed and other options for multiple chips with different programs will be available.
For now, all '96's need the later, 97-98 ECU to do any chip enhancement.
All '97-on 993's, and all 996's (cable & DBW) can be done by R&R'ing the EPROM and reprogramming it.
Robert,...I have new, USA-spec ECU's here on the shelf at all times.
Hope this helps,.......
You haven't found a "chip" for your 96's DME because there isn't such a thing. Starting with '96, the "chip" is integral to the ECU. So, instead of installing a chip, you must have performance software installed. That is, a talented programmer/tuner modifies the code in your ECU. And, thus, why the 96+ performance upgrade (software) for a 96+ model is so much more expensive than older models.</strong><hr></blockquote>
A clarification might be needed for these '96-on' ECU's.
These do indeed have a chip inside there,.... LOL, its a PSOP device that is soldered in and epoxied in place unlike the earlier cars which used a 28 pin DIP device that resided in a socket.
Typically these EPROMS and are removed, reflashed, reinstalled and then tested.
The '96 ECU's are very different from the '97 and later ones as this one year used a proprietary Bosch 2-chip set that was replaced, not reflashed. Since these special chips are NLA, these ECU's have not been modifiable. A solution is in the works to aleviate this and enable these ECU's to be reprogrammed and other options for multiple chips with different programs will be available.
For now, all '96's need the later, 97-98 ECU to do any chip enhancement.
All '97-on 993's, and all 996's (cable & DBW) can be done by R&R'ing the EPROM and reprogramming it.
Robert,...I have new, USA-spec ECU's here on the shelf at all times.
Hope this helps,.......
#39
Bottom line: Please, let's not mis-inform Rennlist members as occurs over on the 'Dark Side' on an on-going basis, i.e. one poster repeats hyperbole of another poster! This leads to members here wasting both time & money in hope of a fix.
Immoblizer issues can be addressed on the OBD-II cars without causing communications problems, IF,...... IF its done correctly. '97-'98 cars are not too difficult, however the '96 cars require the later ECU to be able to re-program these things.
There is a technology that can be used on the '96 cars involving a secondary circuit board containing an EPROM getting soldered onto the '96 ECU motherboard, however its not very robust over time and we've had too many problems with this to use it any more.
#40
'There is a technology that can be used on the '96 cars involving a secondary circuit board containing an EPROM getting soldered onto the '96 ECU motherboard, however its not very robust over time and we've had too many problems with this to use it any more.'
Right, total Mickey Mouse! Had one last week that my customer sent me
from his 993 customer that was having running/no-start problems.
Have been asked a number of times to repair/rebuild those Mickey Mouse
units, for which I just return them and suggest the owner buy another
DME ECM.
I have here four '97-'98 DME ECM which were re-flashed and fail to
communicate with the factory Porsche tester. Try and have a Porsche
dealer or re-seller acquire one of these re-flashed 993s and the value
declines immediately.
Right, total Mickey Mouse! Had one last week that my customer sent me
from his 993 customer that was having running/no-start problems.
Have been asked a number of times to repair/rebuild those Mickey Mouse
units, for which I just return them and suggest the owner buy another
DME ECM.
I have here four '97-'98 DME ECM which were re-flashed and fail to
communicate with the factory Porsche tester. Try and have a Porsche
dealer or re-seller acquire one of these re-flashed 993s and the value
declines immediately.
#41
The first image is of a '96 993 DME. It has three microprocessors (u-p),
the larger on the left being the master. The one the far right is the one that
contains the maps and immobilizer code. That u-p has a mask ROM memory
'hard' coded which does not allow changes from outside the DME ECM.
In the Mickey Mouse mod, that far right u-p is removed and a daughter
board is added with a new u-p and required flash memory.
The other image is of a '97/'98 DME ECM which has a flash-able u-p located
on the far right. This DME ECM is basically the same as used in the early
996 vehicles.
On neither of these ECMs is there a single memory chip that can be removed
and replaced as was the case for the '95 DME ECM.
the larger on the left being the master. The one the far right is the one that
contains the maps and immobilizer code. That u-p has a mask ROM memory
'hard' coded which does not allow changes from outside the DME ECM.
In the Mickey Mouse mod, that far right u-p is removed and a daughter
board is added with a new u-p and required flash memory.
The other image is of a '97/'98 DME ECM which has a flash-able u-p located
on the far right. This DME ECM is basically the same as used in the early
996 vehicles.
On neither of these ECMs is there a single memory chip that can be removed
and replaced as was the case for the '95 DME ECM.
#42
"Immoblizer issues can be addressed on the OBD-II cars without causing communications problems, IF,...... IF its done correctly."
A very BIG IF!!
With all the problems experienced by late 993 owners with getting the
readiness codes set for an emissions test, i.e. Just do a search and
read all the headaches many owners have with that, why would any
owner with a late 993 want to further potentially cause emission
testing problems, notwithstanding the marginal at best 'performance'
change with a re-flash?
A very BIG IF!!
With all the problems experienced by late 993 owners with getting the
readiness codes set for an emissions test, i.e. Just do a search and
read all the headaches many owners have with that, why would any
owner with a late 993 want to further potentially cause emission
testing problems, notwithstanding the marginal at best 'performance'
change with a re-flash?
#43
"Immoblizer issues can be addressed on the OBD-II cars without causing communications problems, IF,...... IF its done correctly."
A very BIG IF!!
With all the problems experienced by late 993 owners with getting the
readiness codes set for an emissions test, i.e. Just do a search and
read all the headaches many owners have with that, why would any
owner with a late 993 want to further potentially cause emission
testing problems, notwithstanding the marginal at best 'performance'
change with a re-flash?
A very BIG IF!!
With all the problems experienced by late 993 owners with getting the
readiness codes set for an emissions test, i.e. Just do a search and
read all the headaches many owners have with that, why would any
owner with a late 993 want to further potentially cause emission
testing problems, notwithstanding the marginal at best 'performance'
change with a re-flash?
Been doing just that rather successfully for 14+ years with no issues; now,.....I cannot speak for anyone else and I'd caution against "tarring everyone with the same brush".
#44
#45