It takes over the functions the stock ECU provides – fuel control, The MSPNP is a racing Engine Management System that completely replaces the Section One: Introduction So, what is a MegaSquirtPNP? Section Six: The Complete Warning List Read this. Section Five: Modifying your MSPNP Adapter Board Headers Wiring a potentiometer type TPS MAP Sensor Upgrades Overboost Protection Boost Control Datalogging
Megatune files to megasuqirt mods#
Section Four: Tuning Installing MegaTune Working with MSQ Files Loading Firmware Settings to Change Settings NOT to Change Settings changed for specific mods Injectors Wideband O2 Sensors Tuning for Boost Section Three: Optional Features AFM Removal Wideband Oxygen Sensor Knock Sensing Launch Control Flat Shift Boost Control Section Two: Installation Overview of connections Tools Required Installing your MSPNP For now I limitied the max timing to 32 degrees until I get back to that.Revision N, Table of Contents Section One: Introduction So, what is a MegaSquirtPNP? Everything has warning labels… More than 32 degrees timing causes the spark to jump to the wrong post in the small cap distributor. I have one problem left with the setup that I haven't had time to work on. When the engine fires up check the timing at the crank matches the timing from your spark table.
Set the cranking timing to about 10 degrees BTDC. I suggest cranking the engine with the injectors disconnected and a timing light hooked up. (I did not use fast idle)Ĭonnect pin R of the 8 pin HEI module to TACH input of relay board.Ĭonnect pin B of the 8 pin HEI module to X12 (S2 connection on relay board)Ĭonnect pin E of the 8 pin HEI module to X11 (S1 connection on relay board)Ĭonnect pin G of the 8 pin HEI module to groundĪssuming that your not trying anything fancy you will already have the coil wiring in place for the stock GM coil. Hook up injectors, IAT, CLT, TPS, O2, fuel pump etc. They both function the same)įit wire between XG1 and right side of D5(non band)įit wire between bottom of R10 and small hole above D9(this is a +5v source - you could also use the hole to the left of D4)įit 1.3K resistor in place of D8 (1k-2k ok)Īdd 1k resistor from (-) of D17 to the right (5v) side of R23Īdd 1k resistor from (-) of D19 to the right (5v) side of R27Ĭonnect the relay board in the normal manner. The following mods need to be made to your MegaSquirt hardware to run 7 or 8 pin HEI modules (some TPI distributor use a 7 pin module, some use an 8 pin module. Go to the "spark" tab and the go to "spark settings"įor all the rest of the settings in MegaTune you are on your own to decide if you use traction control, water injection, staged injection, NOS, etc etc etc. Go to the "spark" tab and the go to "dwell settings" Go to the "code config" tab, then go to the "codebase outputs and function" tab Go through all of the tabs and all of the settings and make sure everything is either disabled or set correctly for your system. The stock TPS, FPR, injectors, TB, small cap ditributor, 8 pin HEI module, etc were all used.įamiliarize yourself with all the settings available in MSnS_Extra024s9 code.
Megatune files to megasuqirt install#
The TPI manifold already had places to install them. The recommended GM air temp and coolant temp senors were used. MSnS_Extra will NOT support control of the TPI IAC valve. Or else end up with air bypassing the throttle plate, high idle you can't get rid of. Otherwise you have to figure out a way to close it or remove it and block off the air inlets to the plenum/throttle body. Mine happened to be in a closed postion, but you may find that yours is open somewhat, you can turn the motor to close it manually I think. NOTE about IAC: from what I understand the IAC valve will be in the position it was last in when the car was shut off. You can remove the cap over the throttle plate adjuster screw easily with a punch. The idle air controller on the bottom of the thorottle body was left disconnected and idle was adjusted with the throttle plate. TPI was from a 1987 305, 19# injectors, small cap distributor with 8 pin HEI module and external coil. (be careful to follow megatune setup procedures and copy msns_extra.ini file or you won't get all of the new feature tabs) MegaSquirt v2.2 hardware with relay board Files can be found by going to then following the link at the MSnS_Extra forum.
Let me know if anything critical is missing. Here are some various notes from the TPI install.