93 l67 3800 sc ecu Q's - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-03-2007, 06:47 PM   #11
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you could try the pcm and harness from a 95 park ave maybe????
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Old 09-03-2007, 07:52 PM   #12
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he fixed the trans issue. but its runnin a little lean so i have to send it back to him so he can adjust the fuel curve. but the only downfall of the regal ecu is that it cannot control the boost solenoid. so i had to bypass it.

i got a full eng harness from a 93 bonne, but was the L eng. so i need a prom if i want to use it. still debating if the boost bypass is worth the trouble of switching the harness and ecu.

and i couldnt use the 95 p/a ultra ecu b.c they had a linear egr, and i have the digital. thanks for the suggestion tho
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Old 09-03-2007, 09:30 PM   #13
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Your engine will not last without boost control.

The PCM can't dump boost in critical situations to prevent damage.
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Old 09-03-2007, 10:33 PM   #14
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If the boost solenoid is bypassed correctly it will work off vaccuum. Now if it totally disabled-

Its been over a year since I've done my last swap the details of it leave me at the moment.
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Old 09-03-2007, 11:28 PM   #15
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i did a few searches on the bcs by-pass, and all i could find was people sayin how it was more responsive. i wish ida known it could be harmful. but ive only got like 10 min of driving time with it by-passed. so it will be fine.

any info on controlling it with just eng vacuum.

if i hook the bcv straight to mfld vac, it pulls the plunger in. which is full bypass. so if i step on it and lower the vac pressure, the valve will open up as i accelerate. will that be functional? as far as a temp solution any way.

but what im gonna have to do is wire up the bonne ecu and harness. that sux doin **** for a third time now. oh well. live and learn.

Anyone happened to have a prom chip for a 93 bonne, park ave or olds that had a L67
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