cygnusx1

Here is my plan so far: -Mount the ECU in the left kick panel. -Mount the Megaview and control buttons in a radio bezel on the center console replacing the radio. The LC1 WBO2 re-cal. button and LED will be here also. -Bolt a large bolt and welding cable to the engine block and mount a copper bus bar under the dash to handle all the returning ground lines. -The ground bus bar will be securely grounded to the engine block and battery ground via heavy cables. -Take the FI and FP relays out of the engine bay and mount them under the dash. -Mount a fuse block somewhere under the dash that will handle all hot leads, including any I/O feeds that requires a fuse. -Install a DB9 connector in the center console to connect the laptop to the ECU for programming. I am debating wether or not to make a "fuel rail" type of "power rail" for the + and - side of the injectors. This would look cleaner than running wire bundles across all the injectors. I would take a two lengths of 12g insulated copper cable and solder the six bosch connectors to them. On the ends of the 12g sections near the firewall, I would connect the injector bank leads from the ecu with either a connector or a solder joint. Any thoughts?

If you could mirror image the characters on the megaview and then mount the VFD on top of the dash. You could reflect the display off the windshield for a heads-up display!

That's called datalogging the high end of the MS tables without a dyno and without breaking the speed limit folks.

Your Injector Staging is set to "alternating" are you using two separate banks of injectors? I think, I think, I think, you should be running "simultaneous". Your setup also includes corrections for O2 sensor. Might want to add an O2 sensor or figure out how to tell MS that you are not using one. You could just raise the activation temp to like 300degrees and it will never use the O2 settings.

I'm sure it will be on Google video or Youtube soon after the airing.

Z_Dust, are you using the transistor that sits right on the turbo coil or are you directly connected to the + - on thecoil? Just curious.

Try connecting the laptop and loading your .msq file back into it then retry it. Also make sure you have spark output "going high (inverted)" in the ignition options. Also what is your max dwell set to. I think if it is higher than 4 or so you could burn the coil. http://www.megamanual.com/ms2/vb921.htm

racing now watkins glen long. rochester server. pass: zccr nope server down

What do you mean by trigger box? Are you talking about that capacitor or transistor that sits on the 280ZXT coil bracket with connectors that look like this "-|"

Everywhere I look I see aftermarket ignition coils for L28's but none for L28ET's. What gives? and why is the L28ET coil so rare or hard to get? My stock turbo one is fine but if I had to replace it or upgrade it I would be SOL unless I could find a new Nissan one. What is the difference between the N/A and Turbo coil?

Really glad you figured it out. Feels good when you finally get it right. I can't wait to get my MS into the Z.

The MegaView I have is using the VFD display which is pale blue flourescent. I am probably going to use a piece of lime color-tinted 1/8" lexan to make a mount for it where the radio goes. With the right lexan tint I can just about match the stock gauge color. You also could go to a photography supply shop and ask for "gels". They are clear color-tinted plastic sheets used for adding color tints to photography. I'll probably cut the lexan to fit the entire radio opening, mask off a window for the VFD and paint the rest of it semi-gloss black. The buttons to operate the Megaview will also mount in the lexan. The megaview can be used to do some tuning with it's buttons. The only problem to tackle now is those darn dim stock gauges!

There was....it's not on the page anymore tough? Maybe they are restocking them.

A friend of mine offered his workplace today to assemble the MegaView unit for my MS-II. He designs boards for IBM. There is no better place to work on electronic projects than an IBM research facility! Amazing stuff they work on over there. He gave me a tour of the place. They are building some SERIOUS computers there. One of them is water cooled. When I say water cooled, I mean 10" water main water cooled! The "computer" is about 75' x 45' and about 8' high. Well anyhow, he assembled the Megaview unit pretty quickly as he really knows his stuff. I wanted to use the wave soldering machine but he said the prep time would be too long. What a difference it makes when you have a $1000 soldering iron and all the RIGHT tools. It went together, we plugged it in and POOF, no-nothing. The MS-II unit shut right down and the display did nothing. We checked it all out and it was built right. We scoped it and all the components were good. Unfortunately, we had very limited web access so I couldnt get the manual online. After a while we threw in the towel and I figured before we fried something we should tell DIYAutotune about this. I emailed them and in about 10 minutes, Jerry, the owner, emailed me back and told me that with Megaview and MS-II, you need to remove pin #9 on the DB9 socket of the Megaview. I tried it and BAM, the display lit up and all the values are ticker-taping across the screen. It looks awesome. I will try to get some vids up tomorrow of the whole MS-II hooked up to the Laptop and the Megaview. I cant wait to get working on the car!

I will most likely plan a trip up to see Pete at some point this Spring. Once I learn as much as I can and get it running well enough to take a road trip. I'll head Northeast to NH. The baby is sleeping so I'm off to read MS manuals! Bedtime Story.

I am still about a month or so away from installing the injectors and the MS-II. I am still learning the systems while my Z is still ice-bound in the shed. My MS-II came pre loaded with firmware MS-II v2.6xx. It seems that some of the "fuel correction" maps were already there. It seems to be correcting VE% for IAT, CLT, and a few other things seem pre-loaded. I am wondering if I will NEED to tweak those or not to get the car working. It's all a mystery at this point. I suppose when I finally install it. All my questions will be answered....or replaced with new ones. I am learning a ton. Matt, from DIY-Autotune, if you read this, is X-Tau enabled on this MS-II v2.687? It is greyed out in the menus of my Megatune 2.25+ -Dave

Ok so the "Required Fuel" will shift the entire map up and down. I thought "Required Fuel" was a fixed number for a given engine. But you have a point. It easier to shift the whole map to get it to idle than to play with individual % values on the map. Is that your logic? Thanks for looking at my maps. -Dave

These maps are NOT loaded into the MS-II yet. In fact the MS-II is not in the car yet but I am practicing map making for my car, based on other maps, and my intuition. Those with "the force", please critique! 1983 L28ET Stock T3/TO4B 440cc injectors Stock fuel pressure 83 ignition coil/dist. 18psi boost SEE ATTACHED ZIP/WORD document. THANKS, Dave

Well, I just spent a couple of hours making pretty maps. I am going to post a new thread showing my THEORETICAL maps. I dont have anything installed in the car yet. I am just practicing and building maps from looking at other maps and my intuition.

OK so I will build tables that range from vacuum, 20kPa to boost 250kPa even though I will only use up to about 18psig. 250kPa = about 36psia (21.3psig)on the boost gauge I guess I can borrow Big Phil's tables then.

My Alfa Romeo used flexible rubber couplers between the engine and the Weber DCOE's. I don't know what you have there but a photo would help?

The check valve at the discharge of the fuel pump is probably stuck open. It's a pretty easy fix. Unscrew the check valve from the pump and clean it or replace it if you can find one. The hose actually clamp onto the check valve. It is very small and looks like part of the pump. Looks like these which are Bosch for Porsche. Not sure if they are interchangeable with our pump. http://www.maximumautoparts.com/PO_Fuel~Pump~Check~Valve_mo.html

I am building up some maps for my new MS-II. I plan on running 15-20psi boost. When I generate my tables, I can use the auto generate tool in Megatune. I have dyno data for my motor at 15psi at the wheels. Should I enter that data for HP/TQ plus about 12% to get flywheel numbers? Or should I just guesstimate HP/TQ at 20psi so my table ends up with a 20psi range instead of just a 15psi range? A bit confusing but if you've used the VE table generator in Megatune, this should make sense. -Dave PS I know the VE Table auto generator is just a rough baseline.

I believe that it can be done either way. The heating cooling RATES might be a bit different but so are everybody's MS settings so that point can be moot. I am going to use the CHT sensor first because it's there already. Bottome line is does it work for you? If it does, then it's all good. I like the idea of monitoring head temp because theoretically, that effects combustion more directly than coolant temp. Basically it's probably a 10-20 degree difference over a matter of 30-60 seconds of temperature rate lag between the two locations. Just a hunch. I finished adding the Mapdaddy boost/atmosphere sensor on the MS-II last night. I also changed the jumper wires around to be able to use the 83 distributor/coil. The stimulator should be here today. I can't wait to get the thing hooked up to my laptop!

Yes, that would have advantages. Especially when trouble shooting or watching gauges at the track.