1998 F body computer swap to newer computer
07-11-2010, 02:34 PM
#1
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1998 F body computer swap to newer computer I would like to do this swap on my 98. I know there is alot of up's to this swap, "more options, tune on the fly, more tables, faster tuning, faster res.," I'd like to hear from some people who have done it and know what needs to be changed. Ive searched and found nothing. I know there are some pinouts to change and a gas tank/sending unit along with something with the cluster. Only downsides I see are some labor (who cares) and a lil money.
07-11-2010, 07:23 PM
#3
you do not need to swap the cluster or the fuel tank sending unit, google "chipsbyal" and you will get the pinout needed.
You can realtime tune the 98 pcm with a roadrunner.
You lose the TCS when swapping to a 99+ pcm.
I did the swap, and swapped back, no real gain that I found on my bolton car)
Ryan
You can realtime tune the 98 pcm with a roadrunner.
You lose the TCS when swapping to a 99+ pcm.
I did the swap, and swapped back, no real gain that I found on my bolton car)
Ryan
07-12-2010, 05:27 AM
#4
I think you mean you can real time tune the car, if you rewire it for the 99 and newer PCM, since Roadrunners are based off 12200411 PCM's, I have one and if definately if for 99 and newer harnesses
To the OP Unless you have a tuning reason to switch to the newer PCM, or your old 98 PCM is toast, I don't think, you'll get any gain out of doing the upgrade. I've done several for people, but I dont think any of them, where just to switch, to the newer PCM, it was because their old PCM went bad and the going price for a 98 PCM seems to be 2 to 4 times, what 99 and newer ones go for
To the OP Unless you have a tuning reason to switch to the newer PCM, or your old 98 PCM is toast, I don't think, you'll get any gain out of doing the upgrade. I've done several for people, but I dont think any of them, where just to switch, to the newer PCM, it was because their old PCM went bad and the going price for a 98 PCM seems to be 2 to 4 times, what 99 and newer ones go for
07-12-2010, 09:02 AM
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I have done searchs, thanks for that though. Search function is a joke and anything I type in just brings up unrelated bullshit. Car doesn't have TCS or ABS for that matter. The sig is somewhat of a joke as the car is H+C+I full bolt-ons with a bottle on standby. The biggest reason I was thinking of changing out the computer is 98's take about a year to load a tune. If you load 10 tunes while dailing it in, along with road testing or dyno runs, your looking at hours of investment. That alone outweighs to me tuning on the fly.
07-13-2010, 08:23 AM
#8
that is very possible, the first one I got was DOA and the second one works great. To keep this post from sounding negative, Craig was great about getting a replacement unit to me and tested it in a vehicle before it was shipped out.
Ryan
Ryan
Last edited by slow; 07-13-2010 at 08:44 AM.
07-14-2010, 10:19 PM
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[QUOTE=slow;13595721]if you have efilive to do a fuel segment swap to keep the fuel gauge working, yes that is all that is needed (and the 99+ pcm bracket to make the swap look clean (you will have to extend some of the wires to make the swap clean)
Agree with above. Take your time and have a lot of patience with the rewiring. I had to extend about 10 wires, a few I could have gotten away with but didn't like how some looked stretched. Definitely use the 99 and up bracket to finish it off. Mine took me a total of 6.5 hours, mainly cause I wanted it to look stock. Here is a pic, and I also did the wire mod a while ago before the pcm swap.
[IMG]
[/IMG]
Agree with above. Take your time and have a lot of patience with the rewiring. I had to extend about 10 wires, a few I could have gotten away with but didn't like how some looked stretched. Definitely use the 99 and up bracket to finish it off. Mine took me a total of 6.5 hours, mainly cause I wanted it to look stock. Here is a pic, and I also did the wire mod a while ago before the pcm swap.
[IMG]
[/IMG] Last edited by 1fastls1ss; 07-21-2010 at 08:23 PM.
07-20-2010, 10:48 PM
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I am thinking about this as well and having problems finding write ups with the search function. Anyone got any links, please no search ****'s as I promise I have.
07-21-2010, 10:15 AM
#16
TECH Enthusiast
Here is my rewire for my 69 conversion. I have some extra stuff in there and it is listed for a 04 GTO to 98 swap but you can just use the Green for the Red as both are the same. I have everything up and running fine with this and I am using the complete 98 harness which is why I am showing other information.
07-21-2010, 10:19 AM
#17
TECH Enthusiast
BTW there are big differences between the operating systems. The 02 has higher resolution some tables. The MAF table is larger and not limited. Guys with big cams report that the idle code is more stable and easier to tune with the 02 than the 98. For mild bolt ons most guys do not see a much change.
