Note that many of these sensors need a 10K resistor inline with the wire to pin 24 to avoid having the crank signal break up at high RPM. We sell a separate kit with an IAT sensor, mounting bung, and pins that can be stabbed into the air flow meter connector to wire it up.
Yes, you just need the IGN-6, the IGN-6's connector, a QuadSpark, and suitable spark plug wires. The MSPNP is shipped configured for the stock single coil.
Tune it for less. Build the ECU up to trigger from the VR Input. We currently do not sell a TPS - a lot of E30 owners have adapted one for an E36.
You'd also need the later engine's crank trigger as well. I have an 86’ 635csi with the 059 Ecu is this model compatible with my car? Level of control: Full Standalone EMS– Fuel and Ignition Control. ), Tachout if using MS3X tach output to run a CDI box, Set up the ECU up to trigger from the VR Input. The free version included on the USB Stick can access all the features and tables of the MegaSquirtPNP. EFI Analytics sells a Bluetooth dongle that plugs into the MSPNP's communications port.
All three wire-in MS3Pro versions use the same wiring and settings for this engine. – optional. A typical rule of thumb is to back off the dwell until you can just barely detect a misfire under lean cruising conditions, then add 0.2 ms of dwell time.
The car was an Improved Touring build with minor bolt ons, so the base tune should be considered an approximate starting point rather than a final map to run.
The DIYPNP connectors are not the exact same version as used in the BMW ECUs, but are a slightly narrower variant to fit in the DIYPNP case. We recommend using D14 for the spark output.
If you wish to purchase one without the connector anyway, please contact us directly. We'll get this figured out.
The stock crank trigger can support distributorless ignition without any changes. Average install time is under 1 hour! The instant fuel mileage gauge is one of the few things we were not able to keep working. Run this wire from IGBTIN to the top of R26 (for a V3.0 board).
You’ll want to take a 330 ohm resistor, solder it to a length of wire, and wrap the resistor with heat shrink. You can use PWM Out 1 to open the valve and PWM Out 2 to close it (pins 14 and 29 of the white connector, respectively).
We recommend installing the stepper IAC outputs for use for tach output and other functions, but these cars should use an, Build the ECU up to trigger from the VR Input. If it's on the right port and right speed, it will give you the version of the Megasquirt firmware that's on the Megasquirt.
). You will need to change the trigger wheel setting to Dual Wheel with Missing Teeth.
You can usually ignore these unless you're doing certain specific tests.
12×12 Air Fuel Ratio Target Tables for use with wide band O2 sensor for precise tuning and table trim. Tune it right. I would recommend adding the following. Note that you may need to add 360 degrees to the Tooth #1 Angle setting if adding a cam sensor. We promise not to spam you to death and you can unsubscribe at any time. It is possible to repurpose them for other sensors, but difficult. How to MegaSquirt Your BMW E30 325i and Other M20/M30 Applications, section 5.3.1.2 of the MS2 V3.57 hardware manual, The crankshaft position sensor will wire to CKP+ and CKP- (pins 6 and 15 on the white connector). Application(s): This article covers the 1987 through 1992 E30 chassis BMW 325i with the M20B25 motor. If you don't have a copy, download it here: http://www.diyautotune.com/downloads/tuning_software/portCheck.zip Power up the Megasquirt and connect it to your PC. If your car has an ECU driven tach, connect the tach to pin 25 and set the tach output to IAC1. The IAC valve uses a 3-wire design. What's the deal with the MAP sensor? There have been several ways to install MegaSquirt on these engines. Yes. Change fuel and spark maps on the fly for different fuels, nitrous activation, etc.
Here are the main application specific wiring details to keep in mind. Also, this MSPNP may not work with automatic transmissions on the E34 or E32 chassis, which rely on the fuel consumption signal for the transmission computer. This ECU is for the later 55 pin wiring harness; the stock wiring harness in 1986 would have used a 35 pin connector that does not physically fit. You just need to run a vacuum hose from the port on the MSPNP to the intake manifold. Using this on the earlier 325e eta motor (M20B27) or other early M20, M30, or S38 versions with flywheel speed sensors will require swapping in the crank trigger assembly from the later engines. Jumper TachSelect to VRIN and TSEL to VROUT.
On the MSPNP, the MS2's two spare analog inputs are being used for knock input and barometric correction. The IAC valve is a 3 wire IAC design.
Connect the coil negative terminal to main board pin 36 (unless using the MS3X tach output to drive an MSD box, in which case you will wire the MS3X tach output to the MSD white wire). For everything else, the E30 stopped after 1991.) M20 base maps is pre-loaded to help your engine start on the first turn of the key (other model base maps included on CD), Real time tuning and data logging with a laptop connection, Supports most aftermarket wideband sensors, 16×16 Fuel Tables allow high resolution tuning, Multiple Acceleration enrichment strategies, Bank to bank fuel control with stock wiring, or 3 channel semi-sequential fueling with minor wiring changes.
Tune it Yourself. Here are the main application specific wiring details to keep in mind. It runs off the factory crank trigger; no extra sensors are required. Internet connectivity is not required, but you may need to use a USB thumb drive if we need to share files over email for support reasons. The tach is sometimes ECU driven – this seems to depend on production year. Mostly, you’ll use the wiring diagrams in section 4 of the manual for your specific ECU. We promise not to spam you to death and you can unsubscribe at any time. These engines use a pulse width modulated (PWM) idle air control motor. You can use FIDLE to open the valve (pin 7) and connect the closing coil to ground through a 30 ohm 50 watt resistor. Headphone output for knock sensor – listen for knock while you tune!
Additionally, some European 325i models for the 1987 year used an ECU with a part number of 0 261 200 073 or 0 261 200 081; this ECU is not compatible with the stock wiring on these cars. Table switching input.
BMW E30/325i/E32/E34 1987-1993 MSPNP Gen2 Plug and Play ECU, QuadSpark Four Channel Ignition Module – optional, USB to Serial Adapter - Trouble Free!!
Adding an E36 TPS is not required, but it does give additional options for tuning boost control and acceleration enrichment. Get the latest news on our products, see who's winning with MegaSquirt & more! See section 6.9.8 of the MS3 Hardware Manual for details.
You can upgrade to later firmware if you wish. We typically use 93 octane for tuning unless we specifically wanted to tune the engine on something else (the 4.8 LS base map was tuned on 87 octane, but that's the only one I am aware of where we used a different fuel).
The air conditioning operates separately from the ECU. The MSPNP Gen 2 has its own documentation: It uses a MicroSquirt Module at its core, with the other boards being unique to the MSPNP Gen 2 and not related to the V3.0 or V3.57.
Let's start with an alternate communications test. Built-in 2-step rev limiter / launch control with flat shift, Internal 4-bar MAP sensor reads up to 44PSI of boost, Knock sensor input with adjustable sensitivity. The stock sensors on an E30 do not support sequential injection, but you could modify the distributor to add a 1 tooth cam trigger to add this feature when using MS3. is the base tune for 91 or 93 octane fuel? MSPNP2 Standalone Plug and Play B8793 ECU, MSPNP RS232 serial tuning cable, 6′ (USB adapter sold separately, if needed), Tuning Software and Documentation USB Stick, 6′ Vacuum Hose for MAP Signal and ‘T’ fitting, 0 261 200 150 – 1986-1988 E24 635CSi with M30B35 engine, 0 261 200 152 – 1987-1991 E30 320i with M20B20 engine, 0 261 200 153 – 1987-1991 E30 325i/is/iX with M20B25 engine, 0 261 200 154 – 01/1987-09/1987 E30 325es with M20B27 engine, 0 261 200 172 – European 1987-1991 E30 320i with M20B20 engine, 0 261 200 173 – 1987-1991 E30 325i/is/iX with M20B25 engine + 1987-1990 E34 525i with M20B25 engine, 0 261 200 179 – 1989-1992 E34 535i with M30B35 engine, 0 261 200 350 – 1988-1995 E34 M5 with S38B36 engine, 0 261 200 351 – 1987-1991 E30 325i/is/iX with M20B25 engine, 0 261 200 380 – 1987-1991 E30 325i/is/iX with M20B25 engine, 0 261 200 382 – 1987-1991 E30 325i/is/iX with M20B25 engine, 0 261 200 524 – 1987-1991 E30 325i/is/iX with M20B25 engine + 1987-1990 E34 525i with M20B25 engine, 0 261 200 525 – 1987-1991 E30 325i/is/iX with M20B25 engine, 0 261 200 526 – 1987-1991 E30 325i/is/iX with M20B25 engine, This product is assembled in Suwanee, Georgia, USA, The only other potential must-have is that if your laptop doesn’t have a 9 pin serial port, you will need our, This unit can function as a boost controller if you add our, If you are removing the mass air flow meter, use our, If you want to change your ignition from a distributor to a coil pack, use our.
Trying to connect the ecu to tuner studio. It will not plug into an M106 wiring harness; the connectors are different. The easiest way without special cables is to use alligator clips - the 55 pin connector has pretty wide pin spacing, so it's not too hard to get test leads on it.
This electronic boost control solenoid can be used with the MS3-Pro/MSPNP as well as any DIY Style MegaSquirt EMS (with the appropriate mods), or with other electronic boost controllers to control boost by adjusting the pressure to a turbo wastegate. We have several full time tech support people who support this ECU by email and over the phone. Set the following under Ignition Options / Wheel Decoder. The MSPNP does not have an upgrade path - it trades flexibility for being pre configured for its application, and the processor is not removable. Note that many of these sensors need a 10K resistor inline with the wire to pin 24 to avoid having the crank signal break up at high RPM. Yes, it works with an M30B35 for the years listed - we include an approximate startup map for this motor on the USB thumb drive. To do this check, you'll need the program portcheck.exe.
Support Articles » Technical Articles » Installation Articles » BMW » How to MegaSquirt Your BMW E30 325i and Other M20/M30 Applications. See the MSPNP2-B8793 installation directions for how to install this kit.
The tach is sometimes ECU driven – this seems to depend on production year. Set JP1 to the 1-2 position, and J1 to the 3-4 position.
Use our PWM idle control mod kit to control this valve. If you get a port where it replies with "S" or something else that doesn't look like a firmware version, this port is probably a mouse port or other port that echoes back everything that's typed. We have some of the stock BMW connectors in our wiring components catalog, but not all of them. Tune it right. hi,im Matias and i got a while on the forum (r3vlimited/e30tech) and always ive got the idea of... Is this compatible with a m30b35 by any chance? If you run into this issue, go to Basic Setup -> Tacho Output Pin, and make sure the tach output is enabled and the output pin set to Tachout. The DIYPNP is temporarily unavailable until we can resolve the problem with the connector shortage.
Driving the factory coil will require a BIP373 transistor, sold separately.
GM type IAT sensor, for bypassing the air flow meter. If using the tach output to drive an MSD box, wire the tach to the MSD tach output instead.
Connect JS10 to IGBTIN (if there are any wires connected to JS10, remove them. If you have any further information, contributions, or questions about this article, please contact us. If you need a lot of I/O, an MS3 may be a better option, although this is not plug and play. The tach is sometimes ECU driven – this seems to depend on production year.
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