Im about to get my 98 pcm reflashed to a 99 so that it will be possible to get the s/c reflash on there. I know I will lose some gauges, but I was wondering if I the low imp style injectors would function the same or if I'd need to add a few resistors. Anyone have experience doing this?
Blew it up, build numbers coming soon
You 98 PCM is a completely different P/N than the 99 PCM. The only reason the GM 00-02 LD9 reflash works on the 99's is because it is the same PCM.......
99's already have the skinny High impedance injectors, and the smaller starter motor......
I do not think the 98 PCM can run the 99 program.....
Edited 1 time(s). Last edited Sunday, March 14, 2010 11:35 AM
PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO
Well I just swapped over to the 99+ 2 wire knock sensor, and I'm pretty sure according to this post that all I have to now do is reflash to a 99 auto. (sweetness and several others did it)
http://www.j-body.org/forums/read.php?f=40&t=59055&a=1
All I was asking was if my stock low imp style will work or i'll have to do something such as add a few resistors
Blew it up, build numbers coming soon
Yes, but Chris is using a 99 PCM....not a re-flashed 98 PCM.
SunfighterGT wrote:
The benifit to this is that now I have a '98 and '99 knock sensor on my car, so when I switch my PCM from the '98 to the '99, the change should be seamless as the only change to the harness that was made was no EGR and a 2 wire knock sensor.
-Chris-
PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO
Talk to Gary(John317) he has low imp injectors on his pre 2000.
~2014 New Z under the knife, same heart different body~
______________________
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2012 numbers - 4SPD AUTOMATIC!!
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Thanks Dave, and Chris is most certainly running a reflashed 98 pcm, it's right in the post.
Blew it up, build numbers coming soon
I know on my 99 Auto that it will run a 00-02 GM relfash, but it will not run a 97 auto Z file.
To clarify.....
Your 98 PCM my run the 99 Program, but I do not think a 99 PCM will run a 96-98 Z Tune.
Edited 1 time(s). Last edited Monday, March 15, 2010 1:31 PM
PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO
Thanks Dave, I pm'd Gary, but he's also running a Tec, not hpt so I 'm not really sure his situation relates.
Blew it up, build numbers coming soon
just run the style injectors that came with the ecm (OEM)..... the reflash is just a program, it changes nothing with hardware inside the ECM that controls current and voltage.
SPD RCR Z -
'02 Z24 420whp
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'04 GTO 305whp
W41 BOI -
'78 Buick Opel Isuzu W41 Swap
