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Old 08-09-2018, 06:35 PM   #1
cgg17
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1995 SL2
1999 SL2
Default Computer fitment

Hello all,
I found a 95 sl1 manual computer. Will this run my manual swapped 1995 Sl2? The only side effects I can think of are lower rev limiters and speed limiters. Any other side effects? Both have manual windows, but mine has power door locks.

...
1994 Sl2 5spd: 56,576 (Totaled 1/10/2018)
1995 Sl2 5spd Manual Swap: 150,062
1999 Sl2 4spd: 98,8xx

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Old 08-09-2018, 09:39 PM   #2
OldNuc
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1998 SC2
Default Re: Computer fitment

Yes but you will be happier with a DOHC 95 computer as the SOHC will initially try to run lean.

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Old 08-09-2018, 10:52 PM   #3
cgg17
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1999 SL2
Default Re: Computer fitment

Quote:
Originally Posted by OldNuc View Post
Yes but you will be happier with a DOHC 95 computer as the SOHC will initially try to run lean.
Running lean will damage my engine? Any way to adjust it manually? I dont plan on spending much, maybe $20 for it, so is it worth a shot? Or will it ruin my engine?

...
1994 Sl2 5spd: 56,576 (Totaled 1/10/2018)
1995 Sl2 5spd Manual Swap: 150,062
1999 Sl2 4spd: 98,8xx

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Old 08-10-2018, 12:51 AM   #4
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1995 SC2
Default Re: Computer fitment

Quote:
Originally Posted by cgg17 View Post
Running lean will damage my engine? Any way to adjust it manually? I dont plan on spending much, maybe $20 for it, so is it worth a shot? Or will it ruin my engine?
Running lean will burn the pistons and valves, over time, and cause power loses in addition to high NOx emissions. Get the correct PCM for a DOHC/Manual out of a 1995 Saturn S-Series.

OBD-I is NOT programmed like OBD-II systems of the 1996-2002 Saturn S-Series. And you can NOT manually reprogram OBD-I systems nearly as easily as an OBD-II PCM.

You'll spend about $300 on the software to hack the SOHC PCM, or you can snag a used PCM from a local wrecking yard.

1995 will only fit 1995, because of the digital EGR programming.

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Old 08-10-2018, 06:08 PM   #5
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Default Re: Computer fitment

Thanks! Ill have to find a decent 95 dohc one.

...
1994 Sl2 5spd: 56,576 (Totaled 1/10/2018)
1995 Sl2 5spd Manual Swap: 150,062
1999 Sl2 4spd: 98,8xx

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Old 11-09-2018, 10:00 AM   #6
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Default Re: Computer fitment

Quote:
Originally Posted by Saturn Night View Post
1995 will only fit 1995, because of the digital EGR programming.
Using that logic, the '94 PCM from California Emission equipped car's would be the same. Not sure if anyone's tried it, might be worth testing if someone's bored and has spare parts that won't be much of a bother if they fry. I suspect the pinout or signal value change's from the mini size 1st gen gauge cluster to the normal size 2nd gen gauge cluster to be a far bigger issue.

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Old 11-09-2018, 11:29 AM   #7
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Default Re: Computer fitment

The CA pcm is rather rare and it is incompatible with most of the 95 wiring except maybe the EGR. The EGR module would work though but the PCM pinout is probably different.

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Old 11-09-2018, 04:43 PM   #8
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Default Re: Computer fitment

It didn't work, the car would crank but not fire. I bought a 1995 Manual PCM for $40 on ebay two months ago for it (old thread). So, I can confirm that it does not work properly.

...
1994 Sl2 5spd: 56,576 (Totaled 1/10/2018)
1995 Sl2 5spd Manual Swap: 150,062
1999 Sl2 4spd: 98,8xx

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