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post #1 of 5 (permalink) Old 01-14-2013, 03:25 AM Thread Starter
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lt1 computer abrv mean.

I have a jet programmer and wanting to learn this if possible. Just dont know the which sections to change without knowing the meanings of them. I've rebuilt my lt1 myself while working at my local performance store. Bore 0.30 over, larger cam, port polished intake and heads.
1996 Lt1 need adjusted idle, fuel, timing is possible with opti-spark. and what ever you all think of next.
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post #2 of 5 (permalink) Old 01-14-2013, 09:08 AM
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My advice would be to read everything you can on pcm tuning. Sticky threads of pcm section has a write up, as well as LT1 PCM Tuning - Welcome! do a google search and you'll find more info. If the tuning forum at Monodax Homepage - TunerCat OBDII Scanner and Data Logger - MXScan Info- is back up and running, you can download other peoples tunes and see what they have changed, and ask members there to make suggestions. I commend you on not just jumping in and changing settings, you can mess up the engine if you don't know what your changing.

Learn as much as you can before you make any changes.
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post #3 of 5 (permalink) Old 01-14-2013, 11:04 AM
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"tuning" is something I leave to the companies, (Fastchip, PCM4LESS).

don't know if you have the "Performance GM Programmer" or the "Dynamic Tuning" JET product. The Programmer one, IIRC, just has simple yes/no features as presets you select from.

The Dynamic one appears to be software where you can specifically adjust various things like AF, timng, idle, etc.

The JET product is not widely used so hopefully someone who has experience with it can advise.

On Dyno tuning is best but for basic performance tuning for motors with known head/cam packages is pretty good and can be "mail ordered" and installed yourself or you can send in your PCM and have it flashed.
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post #4 of 5 (permalink) Old 01-15-2013, 03:16 AM Thread Starter
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Thanks for the Info any thing I get at this point is great. Did not think about the out come when I built the motor. With help ill get it. Can we post pics, is i have some.

Answer to tuner-Its a Jet Dynamic Spectrum Tuner part # 1400
Engine Specs- Full Roller System now
Comp Cam07-502-8.....Lt1 1R269HR-12 INT EXH
Adv Dur .269 .276
Dur @ .050 .218 .224
Valve Lift .495 .503
Lobe Sep 112.0
Bored .030 Decked .010
Line honed. Crank/Rods/Pistons balanced
Molly rings....Port Polished Heads and Intake...Heavier Valve springs.
ARP-Studded Heads and rods.
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post #5 of 5 (permalink) Old 01-15-2013, 09:11 AM
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It would be a bit much to try to describe every single adjustable parameter in any tuning software. I would read as much as you can as suggested, then if you have a question about a specific table or two, we could give you some direction.

FYI, this thread is also better suited in the PCM diagnostics and tuning section.

1995 Firehawk #528 resto-mod underway

Planned 383 rebuild: 195cc competition LT4 AFR heads, custom cam grind (still debating specs), 6" or 5.85" rods, forged internals

Upgraded T56: Viper mainshaft and 2nd gear, steel 3/4 shift fork, Billet keys 1-4, bronze shifter cup, internals Cryo'd and REM'd
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