fuel pressure, TPS setting, and timing for supercharger

gramsch · 05-05-2001, 02:14 PM

Just installed a supercharger on my car and I am trying to tune it. What is a good start for the TPS, Fuel Pressure, and Timing settings?

------------------
Michael "Deke" Gramsch
87'GT - Oxford White (soon to be vermillion red)
Powerdyne 9 PSI Supercharger, 30# fuel injectors, Pro-M 77mm
MSD 6AL ignition and coil, 65mm FMS throttle body, K&N filter, Accel Pro Billet Distributor, Fluidyne Radiator and Blue Hose Kit, Long Tube Headers, Off Road H-Pipe, Flowmaster American Thunder Exhaust, MAC Shifter, Weld Draglites, 190 LPH Fuel Pump, ADJ Fuel Pressure Regulator & Fuel Pressure Gauge, and some other odds & ends.

DaveR_GT · 05-06-2001, 03:04 PM

2 hours and you've got it all hooked up already!?

------------------
'92 GT conv.
TFS heads, GT40, Powerdyne 9#, AOD, 3.73...

gramsch · 05-07-2001, 12:42 AM

Quote:

Originally posted by DaveR_GT:
2 hours and you've got it all hooked up already!?

You know, I was just thinking into the future, had to mow the lawn yesterday anyway.

Mach 1 · 05-07-2001, 01:35 AM

Dont waste your time messing with the TPS, and just experiment with fuel pressure and timing. Start rich and conservative on timing, then increase timing if it doesnt detonate, and increase fuel if it makes more power and runs better that way. Maybe someone with a charger can give detailed advice, but common sense should prevail.

------------------
1993 GT/AOD
'93 Mustang GT

05-07-2001, 01:44 AM

TPS--Don't worry bout it

Fuel Pressure--Are you using a FMU(Fuel Management Unit)? I'm assuming that you are.Fuel pressure,usually most people start around 40psi at idle,the FMU raises it as boost increases.

Timing--Timing should be at 10 degrees BTDC,thats what alotta manufacturer's suggest in their kits(including mine)

------------------

Paxton Blown 87GT
ICQ#112698436

302man · 05-07-2001, 12:16 PM

30lbers should be big enough with out a FMU. Do you have a chip or anything else ? MSD Boost retard box or PMS ect. ? But, basicly, to run a supercharger you need a big fuel pump, big injectors or a FMU to compensate for small injectors. MAS air is to be calabrated for a supercharger.Fuel pressure 45lbs, TPS setting the same as usual. Sometimes a small hole in the TB blade will help if you have some surging. Timing, pump gas= about 18 degrees, race gas 24-30 , depends on how brave you are. I run mine straight race gas and 112 octain and 24 degrees. (full boost) but I do know others who run all around in timing, like a A trim with 10lbs and 30 degrees straight out , unchanged. E-mail me if you need more help.

------------------
302,vortech s trim @18-20lbs showing,edelbrock performer heads-o ringed,gt 40 upper&lower, mac 1 5/8"long tubes, sub frame connectors,50/50 rear, 70/30 front, manual rack,3:55 gears, c4 , best time 10.13@135mph

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05-05-2001, 02:14 PM	#1
gramsch Registered Member Join Date: Apr 2000 Location: Little Rock, Arkansas Posts: 64	fuel pressure, TPS setting, and timing for supercharger Just installed a supercharger on my car and I am trying to tune it. What is a good start for the TPS, Fuel Pressure, and Timing settings? ------------------ Michael "Deke" Gramsch 87'GT - Oxford White (soon to be vermillion red) Powerdyne 9 PSI Supercharger, 30# fuel injectors, Pro-M 77mm MSD 6AL ignition and coil, 65mm FMS throttle body, K&N filter, Accel Pro Billet Distributor, Fluidyne Radiator and Blue Hose Kit, Long Tube Headers, Off Road H-Pipe, Flowmaster American Thunder Exhaust, MAC Shifter, Weld Draglites, 190 LPH Fuel Pump, ADJ Fuel Pressure Regulator & Fuel Pressure Gauge, and some other odds & ends.

05-06-2001, 03:04 PM	#2
DaveR_GT Registered Member Join Date: Apr 2001 Location: W. Springfield, PA Posts: 65	2 hours and you've got it all hooked up already!? ------------------ '92 GT conv. TFS heads, GT40, Powerdyne 9#, AOD, 3.73...

05-07-2001, 01:35 AM	#4
Mach 1 Registered Member Join Date: May 1999 Location: Georgia Posts: 3,866	Dont waste your time messing with the TPS, and just experiment with fuel pressure and timing. Start rich and conservative on timing, then increase timing if it doesnt detonate, and increase fuel if it makes more power and runs better that way. Maybe someone with a charger can give detailed advice, but common sense should prevail. ------------------ 1993 GT/AOD '93 Mustang GT

05-07-2001, 01:44 AM	#5
Mustanguy Guest Posts: n/a	TPS--Don't worry bout it Fuel Pressure--Are you using a FMU(Fuel Management Unit)? I'm assuming that you are.Fuel pressure,usually most people start around 40psi at idle,the FMU raises it as boost increases. Timing--Timing should be at 10 degrees BTDC,thats what alotta manufacturer's suggest in their kits(including mine) ------------------ Paxton Blown 87GT ICQ#112698436

05-07-2001, 12:16 PM	#6
302man Registered Member Join Date: Jul 1999 Location: INDIANAPOLIS Posts: 404	30lbers should be big enough with out a FMU. Do you have a chip or anything else ? MSD Boost retard box or PMS ect. ? But, basicly, to run a supercharger you need a big fuel pump, big injectors or a FMU to compensate for small injectors. MAS air is to be calabrated for a supercharger.Fuel pressure 45lbs, TPS setting the same as usual. Sometimes a small hole in the TB blade will help if you have some surging. Timing, pump gas= about 18 degrees, race gas 24-30 , depends on how brave you are. I run mine straight race gas and 112 octain and 24 degrees. (full boost) but I do know others who run all around in timing, like a A trim with 10lbs and 30 degrees straight out , unchanged. E-mail me if you need more help. ------------------ 302,vortech s trim @18-20lbs showing,edelbrock performer heads-o ringed,gt 40 upper&lower, mac 1 5/8"long tubes, sub frame connectors,50/50 rear, 70/30 front, manual rack,3:55 gears, c4 , best time 10.13@135mph