Quote from: EDNY on February 11, 2017, 10:12:39 PMQuote from: 62131 on February 11, 2017, 09:59:57 PMQuote from: EDNY on February 11, 2017, 09:37:09 PMAttached the instructions for your EFI setup....looks like the blue wire Pin C is the wire you need to (switch) before it gets to the fuel pump.Are you going to use the EFI to turn on cooling fans? I wasn't planning on it, currently I have it on a temperature switch in the intake controlling the fan relay, also it's wired to come on when I turn on the a/c You should be fine that way..on my 94 Chevy truck with TPI I have a manual fan and don't even have an electric fan. Don't know if you have the 8 or 10 pin EFI but to have the fan come on via the ECM you would just need to remove the current intake switch wire and hook it up to the Pin C wire on the 10 pin connector - it (ECM) would then supply the ground the current relay you must already have. That's something you can consider once the car is up and running. I assume you have a single speed electric fan.Yes it's Spal 16" single speed fan
Quote from: 62131 on February 11, 2017, 09:59:57 PMQuote from: EDNY on February 11, 2017, 09:37:09 PMAttached the instructions for your EFI setup....looks like the blue wire Pin C is the wire you need to (switch) before it gets to the fuel pump.Are you going to use the EFI to turn on cooling fans? I wasn't planning on it, currently I have it on a temperature switch in the intake controlling the fan relay, also it's wired to come on when I turn on the a/c You should be fine that way..on my 94 Chevy truck with TPI I have a manual fan and don't even have an electric fan. Don't know if you have the 8 or 10 pin EFI but to have the fan come on via the ECM you would just need to remove the current intake switch wire and hook it up to the Pin C wire on the 10 pin connector - it (ECM) would then supply the ground the current relay you must already have. That's something you can consider once the car is up and running. I assume you have a single speed electric fan.
Quote from: EDNY on February 11, 2017, 09:37:09 PMAttached the instructions for your EFI setup....looks like the blue wire Pin C is the wire you need to (switch) before it gets to the fuel pump.Are you going to use the EFI to turn on cooling fans? I wasn't planning on it, currently I have it on a temperature switch in the intake controlling the fan relay, also it's wired to come on when I turn on the a/c
Attached the instructions for your EFI setup....looks like the blue wire Pin C is the wire you need to (switch) before it gets to the fuel pump.Are you going to use the EFI to turn on cooling fans?
I was planning on using the port on the passage side head to install that sending unit.
Looking at the diagram..you'll need to install their temp sending unit to control the ecm (open/closed loop). If you decide to keep your existing fan setup...you'll need to install their supplied sending unit also.
QuoteLooking at the diagram..you'll need to install their temp sending unit to control the ecm (open/closed loop). If you decide to keep your existing fan setup...you'll need to install their supplied sending unit also.Ed , I'm assuming that Holley is using a heated wide band 02 sensor which should signal the ECM to go into closed loop well before the coolant sensor would. I wonder why they use the coolant sensor for this input.
From instructions looks like the self learning (air fuel ratio) doesn't kick in until the engine hits 160 degrees F.
QuoteFrom instructions looks like the self learning (air fuel ratio) doesn't kick in until the engine hits 160 degrees F. I guess because system isn't concerned about catalytic converter performance the PCM is controlling injector pulse width in open loop based on the criteria that is pre programmed into the system when you run the setup procedure based on you engine and installed components such as displacement, camshaft ect. Once the coolant reaches the temp that you mentioned the system goes into closed loop and monitors real time data from the such as 02 sensor voltage, tps ,RPM and manifold vacuum to control fuel delivery rates with engine performance being the goal rather than the controlling emissions which are lowest at the stoichiometric ruel ratio of 14.7 to 1. A richer mixture will give better performance and run cooler so is a win/win on a performance engine. I never really looked at the Holley system in much detail before but it looks like a pretty simple and effective system. Now you’ve got my wheels turning….I wonder how the 32 would like a transplant.
Ed...Can't you get your prom re-burned to possibly work better with your application?
Had to cut my new tank and install a flat recessed area on the top of the tank so that the fuel pump flange would set flat. The way the top of the tank is made there's not enough of a flat area to mount the pump flange flat. Hope to get it tig welded tomorrow. I'll post pictures soon.
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