mobythevan

Thanks for the comparison. I don't have any info on the kits like that so it is good to see what you get. Of course it is more fun to get your order straight from digikey in one big bag and have to locate everything manually, drill your own endplates, and mess with the map sensor connection.

I don't know what Prox spent on his 82-83 type dizzy, but it was easy to install and I would just suggest anyone make that change if they install MSnS.

I'm afraid mine falls in the same category, Ryan can testify to that.

BTW, the video looks good. When you get it turned up to 12 psi you'll have to come back down and race with me. I want to ride it if you come down again to do tuning. Looks like boost comes on good.

OMG, SleeperZ is back. I thought you disappeared. I thought about emailing you a couple times to see if you were still around. I've made some changes to my setup since I talked to last time about the oil cooler stuff. Welcome back.

Some of the details: Had to weld a bung into the intake pipe right before the TB for intake air temp sensor. Would like to put this in the intake manifold but it would have ment pulling the intake and we didn't have time. Add extra fittings at the thermostat housing to install the GM coolant temp sensor. I use the CHTS on my 83 turbo engine, but since Ryan's is NA he didn't have that. Broke out the fuel pump wire and injector power wire at the relay center by the battery and connected them to the MS relay board so that MS relays now take the place of the factory fuel injector relay and fuel pump relay. Pulled battery power for MS from same area. Pulled ignition switched power for MS from B/W wire that runs all over the datsun cars. MS ground to intake manifold. His 240sx TPS ended up being bad, so swapped mine in. Wired up 4 pin GM HEI module like my install guide shows. Used his NA coil for now because I didn't know the pinout of the 300zx coil he had. Wired the injectors straight from the old ECU connector. His car [78] already has dropping resistors installed. Ryan already had the Supra injector connectors installed. Run vacuum line for MAP sensor in from the intake. It literally took like 5 minutes to time the distributor because we got a little lucky and that was it. Fired up on the first try. Ended up leaving the original two wires connected to the coil. One was B/W on +, the other was Blue on the - side and the blue one keeps the stock tach working Also kept the condenser for filtering off noise and connected the black wire side back to the base of the dizzy. Of course we removed the AFM and ECU. It was tough to do in one day, no one should expect it to go that quick. We prepared fairly well for it and still had at least 5 things come up that were unexpected because I didn't see the car until the day of the install and Ryan didn't know exactly what to expect. It is awesome that the car is finally running good and I stil can't believe he left and drove home in the dark after having everything apart. We still need to tune his car with the wideband and hook up another relay so MSnS will control his cooling fan operation. And now he has 440cc injetors so plenty of overhead for NOS, water injection, etc, heh heh

And before you start put the engine at TDC on number 1 Note the position of the rotor Time the new oil pump shaft to give the same position with the new turbo rotor

When Ryan told me he wanted to install megasquirt in one day I knew it would be interesting. We got scared doing the swap from NA dizzy to 82 type turbo dizzy when it didn't fit up top. Then realized you have to pull the aluminum spacer. With just a 15 minute test run on the setup, he drove it back home about 70 miles at 11PM. It was a good test of megasquirt and I'm glad his car is running better finally. Still need to do some tuning with wideband and get his cooling fan controlled be megasquirt, but he came a long way in one day.

I confirmed this with Ryan's install. Red - 12v Black - GND White - ECU trigger Green - 360 degree trigger, not used for megasquirt.

Here are some various notes from the TPI install. Let me know if anything critical is missing. Files can be found by going to http://www.msefi.com then following the link at the MSnS_Extra forum. TPI install notes: MegaSquirt v2.2 hardware with relay board MSnS_Extra_024s9 code MegaTune v225b417 (be careful to follow megatune setup procedures and copy msns_extra.ini file or you won't get all of the new feature tabs) TPI was from a 1987 305, 19# injectors, small cap distributor with 8 pin HEI module and external coil. The idle air controller on the bottom of the thorottle body was left disconnected and idle was adjusted with the throttle plate. You can remove the cap over the throttle plate adjuster screw easily with a punch. 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. 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. 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. Or else end up with air bypassing the throttle plate, high idle you can't get rid of. MSnS_Extra will NOT support control of the TPI IAC valve. The recommended GM air temp and coolant temp senors were used. The TPI manifold already had places to install them. The stock TPS, FPR, injectors, TB, small cap ditributor, 8 pin HEI module, etc were all used. Familiarize yourself with all the settings available in MSnS_Extra024s9 code. Go through all of the tabs and all of the settings and make sure everything is either disabled or set correctly for your system. Go to the "code config" tab, then go to the "codebase outputs and function" tab Turn off "This Cyl (MSnS)" Select GM 7 pin HEI under "HEI ignition" Set "LED17 function" to spark output Set "LED19 function" to spark output B Go to the "spark" tab and the go to "dwell settings" select dwell control cranking dwell = 6 running dwell = 2.5 minimum discharge =1.5 Go to the "spark" tab and the go to "spark settings" Set "trigger angle" to 10 trigger angle addition 0 "cranking TIming" to "time based" "crank angle" 10 "hold ignition" 0 "Spark output inverted" NO "Fixed Angle" -10 "Trim Angle" 0 For 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. 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. They both function the same) Remove D5,D8,R10 Remove jumper between XG1-XG2 Fit wire between XG1 and right side of D5(non band) Fit 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) Fit 1.3K resistor in place of D8 (1k-2k ok) Add 1k resistor from (-) of D17 to the right (5v) side of R23 Run a length of wire from D17 (-) to X11 Add 1k resistor from (-) of D19 to the right (5v) side of R27 Run a length of wire from D19 (-) to X12 Connect the relay board in the normal manner. Hook up injectors, IAT, CLT, TPS, O2, fuel pump etc. (I did not use fast idle) Connect pin R of the 8 pin HEI module to TACH input of relay board. Connect pin B of the 8 pin HEI module to X12 (S2 connection on relay board) Connect pin E of the 8 pin HEI module to X11 (S1 connection on relay board) Connect pin G of the 8 pin HEI module to ground Assuming that your not trying anything fancy you will already have the coil wiring in place for the stock GM coil. I suggest cranking the engine with the injectors disconnected and a timing light hooked up. Set the cranking timing to about 10 degrees BTDC. When the engine fires up check the timing at the crank matches the timing from your spark table. That is about it. I have one problem left with the setup that I haven't had time to work on. More than 32 degrees timing causes the spark to jump to the wrong post in the small cap distributor. For now I limitied the max timing to 32 degrees until I get back to that.

It doesn't look like many people will use it for turbo setups because the MSnS_Extra code offers more features than MSII. MSII seems to be a great fit for NA checy TPI setups because it can contol the idle air controller. MSnS_Extra cannot do that. There are no real plans to move MSnS_Extra code to the MSII processor because the extra memory availbable seems to be used already. It doesn't look there is a push to make MSII have all the features of MSII.

Nothing was tapped into for wiring. We had the TPI manifold on the car and megasquirt on the side and built a complete wiring harness from every sensor/injector to the megasquirt. So if your looking for a wiring diagram from original harness to megasquirt I can't help. I'll put up the info and see if its any help to anyone, but it might not be.

I could probably put something together. It is an easier install than the 280zx turbo I think. If I have time today I'll put up a small writeup.

Here are pictures of the S&W 8 point installed in a 73 240z. This works fine for me, but I'm not picky. I'll just put up the pics so you have more info for your own decision.

In the logs my air temps rise slow and steady. My sensor is still located right in front of the TB.

This wasn't 1/4 mile but I was doing 3rd and 4th gear pulls then let off, so similar. This was with the old saab IC. I haven't measured again since the NPR went on. 1st measurement: No intercooler, just j-pipe Ambient air = 55 Boost = 10psi (in manifold) air temp under no boost (cruising) = 100-110 air temp under boost = 170-190 2nd measurement: saab 9000 IC installed Ambient air = 62 (got a little warmer before I could get back out) Boost = 10psi (in manifold) air temp under no boost (cruising) = 70-78 air temp under boost = 80-90

If you know how to wire up relays then I would say skip the relay board. You will have a cleaner setup if you wire your own relays. If you don't like the sound of doing your own then your better to stick with the relay board. the install won't be as clean looking with the extra board and wiring, but it is easy to hook up. Hope that helps

I haven't done any work with OBDI or II. That is part of the reason to go with megasquirt is to avoid the OEM computer altogether. Maybe try the same question in the chevy V8 section. Sorry.

http://www.megasquirt.info/PWC/

Will need some more info from you to help you out. Does the unit work on the stim board? Have you checked the output of the ignition trigger from MS that fires the ignition module? Also, did you compare your coil wiring to what is described in the install guide? let us know.

What do expect to get as a built harness? I believe they just cut the wire and put a connector on one end. You still have to connect the other end to all of your sensors, injectors, etc. If that is what you expect then the pre-built systems should work for you. I don't think anyone makes a pre-built harness for the 280zx turbo yet. It would be a good seller I'm sure.

I didn't think the 280zx turbo wastgate housing would bolt onto the z31 turbo. I have both in my garage, or so I thought. Let me know if that does bolt together.

Not on any of the GM trucks/suvs that me, my family, friends have owned from 96-99. I haven't seen one make it over 80K. That is with fuel filter replacements and other babysitting. GM's fuel pump problems have been a huge scam. My 96 will be ready for another one in about 20k.

This has come up before because the wires leave the distributor then go to a round 4 plug connector. From there they apparently change wire color. Someone will have to verify the colors depending on where in the harness you tap in. I don't remember where in the harness my colors came from since it has been so ong since the install. My car is at home so I couldn't check until tonight.

MSnS_extra code will control spark and control dwell, but that code requires a little more research up front than regalur MSnS. It has a lot more settings and potential for mistakes because it gives you a lot more things to control. Do everyhting a step at a time. So setup fuel only, then when it works good move on to spark. A gm module is only $13 so maybe set up with GM module for a couple days and when it works good then try using dwell control and stock module(removing GM module from the setup). Once you jump in and do the fuel only setup you will learn a lot more about megasquirt in general.