I followed the directions in the tech article that Pablo wrote. Everything was pretty easy and went well. I boosted my fuel press. from 12 psi to 14.5 psi. I could really use some advice on tunning. It seems to be a little slugish now. I havn't read the article on tunning with the volt meter and o2 sensor yet so I'll start there. does anyone know if the greater flow of fuel will demand or even allow for greater ignition advance? Generally speaking should I be able to safely go farther than the 6 deg of advance I'm currently running without detonation or are the two parameters somewhat unrelated to each other. Any Ideas would be appreciated. Otherwise, I'm gonna back the fuel pressure down to about 13 psi and see how it runs then.

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Black 1989 RS Convertible w/43,000 mi.
Excellent Condition
LO3 305 w/TBI
12 PSI Fuel Pressure
6* Timing Advance
Open Element 14x3 K&N
Hypertech Thermomaster
160 Degree Thermostat
Low Temp Fan Switch
Eddlebrock RPM Muffler
No Cat/No AIR Injection
B&M Stage 2 Shift Kit
17"x8.5" ATP 5 Spoke Alloys
P 245/45 Goodyear Eagle
HP Ultra Plus Tires
Lakewood Control Arms

Coming Soon:
3.73 Gears
Headmann Headers & Y Pipe
Lakewood Pan Hard Rod
MSD Wires and Coil

 

yeah generally you can run more timing with a richer mixture

going up to 14.5 is a big change.. try smaller changes

 

Thanks again for the reply Pablo. I'm going to start at 13 PSI and go from there. Once it seems to be getting the right type of mixture I'll go back and play with the timing again. Also, at these higher pressures the needle in the fp gauge seems to be bouncing around and I dont think it was at the stock setting of 12 psi. Does this suggest a problem like cloged injectors or something else perhaps. Just thinking.

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Black 1989 RS Convertible w/43,000 mi.
Excellent Condition
LO3 305 w/TBI
12 PSI Fuel Pressure
6* Timing Advance
Open Element 14x3 K&N
Hypertech Thermomaster
160 Degree Thermostat
Low Temp Fan Switch
Eddlebrock RPM Muffler
No Cat/No AIR Injection
B&M Stage 2 Shift Kit
17"x8.5" ATP 5 Spoke Alloys
P 245/45 Goodyear Eagle
HP Ultra Plus Tires
Lakewood Control Arms

Coming Soon:
3.73 Gears
Headmann Headers & Y Pipe
Lakewood Pan Hard Rod
MSD Wires and Coil