Map63Vette
Well-Known Member
As was mentioned in a separate thread I would like to try to get a new source going for anyone who would like to share and help out others to get their engines up and running and tuned to run like they are really capable of. Uhcoog1 has generously offered to host tuning files for the time being, so once that gets set up and he gets the files we can start posting links. For the time being though I'll try to get the ball rolling. If you can, please list whatever details you can about your build to help others in determining if your tune is something that would be beneficial for them to use as a starting point or not.
WARNING: THESE FILES MAY WORK FOR WHOEVER POSTED THEM, BUT THAT IS NO GUARANTEE THAT YOU CAN JUST LOAD THEM INTO YOUR ENGINE COMPUTER AND GO. PLEASE CHECK EVERYTHING OVER AND VERIFY SETTINGS BEFORE ATTEMPTING TO USE THESE FILES.
They are provided as a source to study and use to help determine what may work best for you. I HOLD NO RESPONSIBILITY FOR SOMEONE DAMAGING THEIR ENGINE BECAUSE THEY USED MY TUNE OR ANYONE ELSES. I know for a fact that I have some goofy settings in my Megasquirt file because I only use it to run the fuel injection. There are settings for ignition that are dummy values that have no bearing on how my engine runs.
Engine details:
5.7 Hemi block and internals, standard displacement, rotating assembly, cam, and heads, stock 06+ coils
Indy Mod Man intake with 4bbl top plate
TTI headers
Accel DFI 1200 cfm 4bbl throttle body with GM TPS sensor and IAC motor
GM coolant and MAT/IAT sensor
Innovative LC-1 wideband O2 sensor and controller
MSD 6-Hemi ingition system running on stock crank, cam, and MAP sensors
Megasquirt 2 computer running MS 2/Extra firmware (will update with exact build when I check it later) (for those that don't know, the Megasquirt system comes with a built in MAP sensor that just requires a vacuum line from the manifold to run, so I actually have two MAP sensors in my system, the stock one for MSD and the built in one for the Megasquirt)
Injectors are stock 5.7 Hemi and the fuel pressure in the system is set at 60 psi using a vacuum reference regulator (60 psi at ambient)
Megasquirt setup:
Alternating batch fire injection (fire one rail at a time alternating)
IAC used only for warmup similar to a choke (not used to maintain idle speed at temperature, yet at least)
O2 feedback enabled for closed loop running
Electronic fan control set for 200 on 190 off (I think, pretty sure it's wired on the FIdle circuit as well)
WARNING: MY IGNITION IS SET UP TO RUN A DISTRIBUTOR STYLE IGNITION IN THE SOFTWARE. THIS IS ONLY USED TO RUN THE TACHOMETER AND NOTHING ELSE. The timing values in the timing table are based on my MSD timing values for the fun of it, but they do not control anything. I put them in that way so that I had a rough idea what the timing was without having to hook my computer up to my MSD box, but that does not mean that they are the same as what the MSD is actually doing.
MSD Timing file: http://3gduster.com/tuning/Map63VetteMSD.IGN
Megasquirt tune file: http://3gduster.com/tuning/Map63VetteMSQ.msq
Screenshots of timing and fuel curves:http://3gduster.com/tuning.html
WARNING: THESE FILES MAY WORK FOR WHOEVER POSTED THEM, BUT THAT IS NO GUARANTEE THAT YOU CAN JUST LOAD THEM INTO YOUR ENGINE COMPUTER AND GO. PLEASE CHECK EVERYTHING OVER AND VERIFY SETTINGS BEFORE ATTEMPTING TO USE THESE FILES.
They are provided as a source to study and use to help determine what may work best for you. I HOLD NO RESPONSIBILITY FOR SOMEONE DAMAGING THEIR ENGINE BECAUSE THEY USED MY TUNE OR ANYONE ELSES. I know for a fact that I have some goofy settings in my Megasquirt file because I only use it to run the fuel injection. There are settings for ignition that are dummy values that have no bearing on how my engine runs.
Engine details:
5.7 Hemi block and internals, standard displacement, rotating assembly, cam, and heads, stock 06+ coils
Indy Mod Man intake with 4bbl top plate
TTI headers
Accel DFI 1200 cfm 4bbl throttle body with GM TPS sensor and IAC motor
GM coolant and MAT/IAT sensor
Innovative LC-1 wideband O2 sensor and controller
MSD 6-Hemi ingition system running on stock crank, cam, and MAP sensors
Megasquirt 2 computer running MS 2/Extra firmware (will update with exact build when I check it later) (for those that don't know, the Megasquirt system comes with a built in MAP sensor that just requires a vacuum line from the manifold to run, so I actually have two MAP sensors in my system, the stock one for MSD and the built in one for the Megasquirt)
Injectors are stock 5.7 Hemi and the fuel pressure in the system is set at 60 psi using a vacuum reference regulator (60 psi at ambient)
Megasquirt setup:
Alternating batch fire injection (fire one rail at a time alternating)
IAC used only for warmup similar to a choke (not used to maintain idle speed at temperature, yet at least)
O2 feedback enabled for closed loop running
Electronic fan control set for 200 on 190 off (I think, pretty sure it's wired on the FIdle circuit as well)
WARNING: MY IGNITION IS SET UP TO RUN A DISTRIBUTOR STYLE IGNITION IN THE SOFTWARE. THIS IS ONLY USED TO RUN THE TACHOMETER AND NOTHING ELSE. The timing values in the timing table are based on my MSD timing values for the fun of it, but they do not control anything. I put them in that way so that I had a rough idea what the timing was without having to hook my computer up to my MSD box, but that does not mean that they are the same as what the MSD is actually doing.
MSD Timing file: http://3gduster.com/tuning/Map63VetteMSD.IGN
Megasquirt tune file: http://3gduster.com/tuning/Map63VetteMSQ.msq
Screenshots of timing and fuel curves:http://3gduster.com/tuning.html
I'd like to continue to use the factory wire colors, but considering a lot of the colors are blue with a green and gold stripe getting the wire in the same configuration might be tough.
