decision time!! carb or efi
Originally Posted by muythaibxr
I'd like to jump in and say the megasquirt is a good option... the megasquirt itself, w/o the stimulator, is only about $140 for a kit, or $300ish pre-built. Setup is well documented, and the tuning instructions on the megasquirt site are written as if the person reading has never tuned anything before... so if you've never done this before, there is nothing to worry about.
I'm helping my friend (Tofuball) megasquirt his 13b 6port (s5). We're using the msns-extra firmware on the megasquirt, and a techedge wideband. We're using AFR tables, letting the megasquirt control ignition (right now with a hack-job GM HEI ignitor and the stock leading coil, but after tomorrow, we'll be using a stock CAS, and stock leading coil, with trailing coming in a few weeks), megasquirt controls the aux ports, and VDI as well. We're also using the staged-injection code to handle engaging the secondary injectors... ALL of it works great, so far... and we've revved up to 9000 rpms at full throttle with no problems (well, the HEI module fried but that's the HEI modules fault, not the megasquirt's, and we won't have to worry about that once we move to a fully stock ignition).
Anyway, my point is that several people have the megasquirt running their 13b's without problems.
I'm helping my friend (Tofuball) megasquirt his 13b 6port (s5). We're using the msns-extra firmware on the megasquirt, and a techedge wideband. We're using AFR tables, letting the megasquirt control ignition (right now with a hack-job GM HEI ignitor and the stock leading coil, but after tomorrow, we'll be using a stock CAS, and stock leading coil, with trailing coming in a few weeks), megasquirt controls the aux ports, and VDI as well. We're also using the staged-injection code to handle engaging the secondary injectors... ALL of it works great, so far... and we've revved up to 9000 rpms at full throttle with no problems (well, the HEI module fried but that's the HEI modules fault, not the megasquirt's, and we won't have to worry about that once we move to a fully stock ignition).
Anyway, my point is that several people have the megasquirt running their 13b's without problems.
Joined: Dec 1999
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From: Behind a workbench, repairing FC Electronics.
Originally Posted by muythaibxr
I'd like to jump in and say the megasquirt is a good option... the megasquirt itself, w/o the stimulator, is only about $140 for a kit, or $300ish pre-built. Setup is well documented, and the tuning instructions on the megasquirt site are written as if the person reading has never tuned anything before... so if you've never done this before, there is nothing to worry about.
I'm helping my friend (Tofuball) megasquirt his 13b 6port (s5). We're using the msns-extra firmware on the megasquirt, and a techedge wideband. We're using AFR tables, letting the megasquirt control ignition (right now with a hack-job GM HEI ignitor and the stock leading coil, but after tomorrow, we'll be using a stock CAS, and stock leading coil, with trailing coming in a few weeks), megasquirt controls the aux ports, and VDI as well. We're also using the staged-injection code to handle engaging the secondary injectors... ALL of it works great, so far... and we've revved up to 9000 rpms at full throttle with no problems (well, the HEI module fried but that's the HEI modules fault, not the megasquirt's, and we won't have to worry about that once we move to a fully stock ignition).
Anyway, my point is that several people have the megasquirt running their 13b's without problems.
I'm helping my friend (Tofuball) megasquirt his 13b 6port (s5). We're using the msns-extra firmware on the megasquirt, and a techedge wideband. We're using AFR tables, letting the megasquirt control ignition (right now with a hack-job GM HEI ignitor and the stock leading coil, but after tomorrow, we'll be using a stock CAS, and stock leading coil, with trailing coming in a few weeks), megasquirt controls the aux ports, and VDI as well. We're also using the staged-injection code to handle engaging the secondary injectors... ALL of it works great, so far... and we've revved up to 9000 rpms at full throttle with no problems (well, the HEI module fried but that's the HEI modules fault, not the megasquirt's, and we won't have to worry about that once we move to a fully stock ignition).
Anyway, my point is that several people have the megasquirt running their 13b's without problems.
I might see it this weekend if he brings it to the meet.
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Originally Posted by GTRay7
the EFI pump is simply the high pressure fuel pump for the EFI system. also, make sure you get an EFI fuel pressure gauge so you can accurately set the pressure of the system.
i would advise against building in the air vent into the surge tank. an air vent is going to allow fuel vapors to escape the system - you don't want this to happen, especially mounted under the hood. any air in the system will be returned to the fuel tank via the return line. if the tank is constructed properly then there will no worries of airation.
in this case i would reccomend building your tank to slightly larger than the specs on that site. the extra capacity will come in handy when the accelleration loads of the 13B outstrip the fuel flow capacity of the stock fuel pump that was designed for a carbed 12A.
before you order any parts do me a favor and give me a complete catalogue of parts that you already have and that you plan to acquire. the last thing you want to do is buy parts that you don't need or can't use.
Ray
i would advise against building in the air vent into the surge tank. an air vent is going to allow fuel vapors to escape the system - you don't want this to happen, especially mounted under the hood. any air in the system will be returned to the fuel tank via the return line. if the tank is constructed properly then there will no worries of airation.
in this case i would reccomend building your tank to slightly larger than the specs on that site. the extra capacity will come in handy when the accelleration loads of the 13B outstrip the fuel flow capacity of the stock fuel pump that was designed for a carbed 12A.
before you order any parts do me a favor and give me a complete catalogue of parts that you already have and that you plan to acquire. the last thing you want to do is buy parts that you don't need or can't use.
Ray
thanks for all your help Ray.
so i will need 2 fuel pumps? one to supply the tank and one to feed the injectors? Thats what I should have asked about the efi pump. I knew it was a fuel pump I just wasn't sure if its another pump all on its own.
As for the parts that I have at the moment.. i'll get back to on what I have Saturday, when I return from the bone yard.
things on my list.. i dought i will find any of these.
interior harness -se
gas tank -se
rear end -se
in the garage i got a 13b with the wireing harness. When I go EFI I don't plan on leaveing the fuel system stock. I know if I just toss the 13b in there and take out the 12A without adding to the fuel system the car would really die of fuel starvation. I just wish I had for time to work on this then what I currently have, 4hrs @ week.
Last edited by drunkclever; May 13, 2005 at 10:44 PM.
Originally Posted by Pele
I've seen this man's rig. As it was just in testing phase, it wasn't pretty, but it idled nicely after a little tuning.
I might see it this weekend if he brings it to the meet.
I might see it this weekend if he brings it to the meet.
Hey Pele,
Remember we talked about the motor trade barter system. Do you want me to bring the motor to the meeting tomorrow or pick it up later when doing the install and whatnot?
-Greg
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Jeff20B
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