89IROKCONVERT

knowing gm it should be possible does anyone know where i can get info on this

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Maverick H1L

The answer is yes, but you have to replace the entire engine wiring harness, ECM, and add VATS or find a way to duplicate the signal running to the late model ECM. And that's the easy stuff before you have to repin a couple of large connectors.

I think some on here have been able to get away with replacing just the ECM, but I wanted a complete change, so that's the way I did it with my 3.1.

__________________
Dan V.

Project is on hold...
The H1L-2 Raven:
1987 Pontiac Firebird, T-top
Bone Stock Except for the Following:
1991 VIN T engine, harness and ECM. Yes, I have VATS! ('730 harness is out for inspections due to problems, running on stock '302 system for now )
1984 Base Taillights
Overhead console from an 86 Berlinetta
90-92 Z/28 rear deck spoiler with HMSL delete
Eclipse CD-5435 MP3/WMA Headunit, 50Wx4 with iPC-106 iPod controller
Sony 4x6" 120W Front Speakers
Clarion 220W 3-way 6x9 Rear Speakers
Distinct (Crossfire) DVC 12" subs with Distinct 700W amp in prefab 82-92 F-body hatch box, 130+ dB (when working right)
Factory 700R4 replaced with 85 T-5 5-Speed manual trans, .76:1 OD.
Engine: 3.1L LH0 with off-the shelf air intake and a Cherry Bomb 2.25" Muffler.

BigBadLou

Dan is right, it is not a trivial change.
I would suggest searching the TPI board, many here have done it before, you should be able to find plenty of advice.

You will need good wiring diagrams and connector pinouts (especially C100, C207 and the ECM) so here: http://www.austinthirdgen.org/index.php?pid=19

Hope this helps.
Lou

__________________
'91 Z28 convertible w/305TPI WC T5 (no more auto)
"Nothing screams more of poor craftsmanship than wrinkles in your duct tape!"

89IROKCONVERT

ok i thought it would be an easy change over if i changed it over and id be saving some money and updating my car but if this is true ill just blow the money on a new maf sensor and be done with it thanks for the info