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Howzit?

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Old 07-14-2017, 05:30 PM   #1
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Join Date: Nov 2011
Posts: 3

Howzit?

Old school, carb-guy fussing around with all this new fan-dangled computer stuff...ECM/PCM, sensors, etc. etc. My brain needs some help and advice. I live in Waipahu, on Oahu, and do most of my car stuff at the Navy Auto Hobby shop.

Currently, my project is a '92 Chevy 4x4 S10 that I've been restoring and modifying the drive train. The restoration phase is mostly complete and now I want to focus on making it run better. The motor is a slightly modified 4.3L which has been bored .020 over with flat-top pistons, running a marine version cam with roller rockers, '96 Vortec heads, Edelbrock 2114 square-bore intake (with 1-inch carb-to-TBI adapter), and shortie headers. I opted for this engine build after researching it on the S10forum.

The sum of these changes is a quirky running motor. While I don't know for certain, one of the main issues maybe the absence of the EGR. I wasn't able to install an EGR because the intake has no place to accommodate one. The original ECM is a 16144288 with BCC BARL. Like I said, it runs quirky...starts, runs fine in CLOSED loop but once it switches to OPEN loop it struggles to stay running.

My ultimate plan is to swapout the ECM with a 16168625 PCM and take advantage of the 8162 baud processing. Thus far, I have fashioned an adapter which would have allowed me to switch back and forth between the ECM and PCM in the event I mess up while tuning.

In a nutshell, that is my story.

All assistance welcomed! Mahalo!
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Old 12-25-2017, 02:30 AM   #2
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Join Date: Sep 2002
Location: honolulu
Posts: 80
Car: '86MCSS
Engine: 396 .030"
Transmission: M20


Re: Howzit?

Almost exact setup with slightly bigger cam... https://www.thirdgen.org/forums/diy-...tuning-am.html
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