Twin screw and TMAP ~ HELP - 2003-04 Mach 1 Registry Owners Club

Mister L · 08-22-2008, 07:27 PM

To the Whipple/Kenne Bell folks...I have the IAT connected to the TMAP. Do I need to connect the MAP wires on the TMAP to the computer/harness and if so can you tell me what pin/s or wires in the harness? This is on a Whippled Mach. I already have a base tune loaded from LaSota Racing, car is running but has not been driven yet and needs to go to the dyno but I don't want to get there and someone tell me "oh, you need to wire in the MAP circuit!"

It would seem to me that without wiring in the MAP the computer won't know I have a blower. Am I wrong in my thinking"

Thanks for any input guys. This mod has taken forever..........but that's been my fault. I'm SLOOOOOOOOOOWWWWW!!!!!!!!!!!!

lxh89 · 08-22-2008, 08:51 PM

Im running 03 Cobra wiring + 03 Cobra ECU so no direct experience regarding the mach ECU/Wiring harness...

However, I can say the mach ECU will be more concerned with pressure drop across injector measurement from the FRPS in terms of determining fueling needs. It really doesnt need to know manifold absolute pressure, it just needs to know if desired pressure drop is 39psi and current fuel pump duty cycle isn't acheiving that, it will up the fuel pump duty cycle to compensate.

Tony

Mister L · 08-22-2008, 10:43 PM

Thanks...........you would have thought I would have investigated this earlier than now. Hopefully someone will chime in. I'm wanting to take it to the dyno soon and having someone else wire it up is just another delay. I'm running the Mach FRPS but have the GT superpumps and modified FPDM from Lethal with 60 pound injectors.

08-22-2008, 07:27 PM	#1
Mister L Don't squeeze the Charmin Join Date: Sep 2003 Location: OKC, OK Posts: 1,036	Twin screw and TMAP ~ HELP To the Whipple/Kenne Bell folks...I have the IAT connected to the TMAP. Do I need to connect the MAP wires on the TMAP to the computer/harness and if so can you tell me what pin/s or wires in the harness? This is on a Whippled Mach. I already have a base tune loaded from LaSota Racing, car is running but has not been driven yet and needs to go to the dyno but I don't want to get there and someone tell me "oh, you need to wire in the MAP circuit!" It would seem to me that without wiring in the MAP the computer won't know I have a blower. Am I wrong in my thinking" Thanks for any input guys. This mod has taken forever..........but that's been my fault. I'm SLOOOOOOOOOOWWWWW!!!!!!!!!!!! __________________ Mister L 03 Black 6-speed

08-22-2008, 08:51 PM	#2
lxh89 Registered User Join Date: Jan 2003 Location: Houston, Tx Posts: 1,530	Re: Twin screw and TMAP ~ HELP Im running 03 Cobra wiring + 03 Cobra ECU so no direct experience regarding the mach ECU/Wiring harness... However, I can say the mach ECU will be more concerned with pressure drop across injector measurement from the FRPS in terms of determining fueling needs. It really doesnt need to know manifold absolute pressure, it just needs to know if desired pressure drop is 39psi and current fuel pump duty cycle isn't acheiving that, it will up the fuel pump duty cycle to compensate. Tony __________________ 2015 Ruby Red Mustang GT Premium Bone Stock 03 Oxford White Mach 1 - SOLD 1.72 60',10.932@131.60MPH, 3800# Raceweight

08-22-2008, 10:43 PM	#3
Mister L Don't squeeze the Charmin Join Date: Sep 2003 Location: OKC, OK Posts: 1,036	Re: Twin screw and TMAP ~ HELP Thanks...........you would have thought I would have investigated this earlier than now. Hopefully someone will chime in. I'm wanting to take it to the dyno soon and having someone else wire it up is just another delay. I'm running the Mach FRPS but have the GT superpumps and modified FPDM from Lethal with 60 pound injectors. __________________ Mister L 03 Black 6-speed

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