I have a TPIS stage 3 PROM. I have the timing set currently at stock 6* adv.

I also have my T.P.S. set at .54 volts. I know I could go higher, but will it put me into knock retard?

I use only premium fuel (92-94 octane).

Can I set the timing or TPS any further without slowing down?

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Mike L.

"If it feels good - stay in it "

1987 IROC Z TPI 350 A4 3.27 Borg-Warner.

Mods: 2300-2500 Stall Converter, Shift Kit(GM parts), TPI Specialties Stage 3 PROM, Modified Airbox w/ K&N's, Relocated MAT sensor, Gutted MAF, Accel 8mm Wires, bypassed TB coolant, Flowmaster 3 chamber single 3" in/out muffler, airfoil, Random Tech Hi-Flow Converter (soon to go byebye!). ALL STOCK otherwise.
http://www.MichaelLasiuta.home.att.net

**BOYCOTT LAPEER DRAGWAY**

 

you should be able to advance it to about 8 to 12* btdc, and could probably set the tps to about .60-.61

 

Aftermarket chips are notorious for having the initial advance bumped already. I would leave your base timing at 6* (set with the ESC unplugged), because once the chip comes into play, it is probably already at 12*... I would also investigate burning your own proms....for what TPIS gets for burning a prom, you could have all the equipment to do your own, and then some.

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Mike Metzler (Desert86Roc)[*] Webmaster: SpeedWorldMotorplex.com[*] Click Here For 86 IROC 305 TPI (406 build in progress) Page

ET's @ 1250 ft[*] 14.28 @ 95.461 mph (uncorrected, NOS, no headers)[*] 15.365 @ 86.785 mph (uncorrected, headers, no NOS)
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You are better off playing with your initial timing timing at the track. Start at 4* and go higher until you slow down.