naviathan Posted July 10, 2007 Share Posted July 10, 2007 Ok, I'm taking a week off work to do my head gasket and install MS on my DD. Since I already have a new cam and header I'm going to put those in while I'm at it. Matt and HizAndHerz are already working the VR dist issue. Once I'm wired in, which I'm sure I can handle easily enough, I want to make sure I have an .msq to jump off with and run. I've been playing with one at work with no ECU connected, but I think I might have it. Can someone look this over and tell me if I'm in the ball park or if I'm WAAAYYYY out? I'll be using stock injectors, GM IAC, GM Temp and IAT. Help me out. EDIT: Nevermind.... Quote Link to comment Share on other sites More sharing options...
naviathan Posted July 12, 2007 Author Share Posted July 12, 2007 Ok after plugging everything in, I can see that starting an msq without MS connected doesn't work. I'm still working with it as much as possible. Here's what I've got: MSA Stage 2 cam (btw does anyone know what the cold specs are, I seem to have misplaced my cam card) Pacesetter 3-into-2 header GM coolant and IAT sensors GM IAC stepper motor locked NA VR dizzy (as soon as I get the locking part straight) Everything else is a stock 81ZX N/A Can I get some suggestions for what I need to use as far as constants and enrichments and such. I think I have it figured out, but I'm not real sure. 14.8 is stoich right? I've read some people didn't get it to idle right without going down to 13.8 or so. Quote Link to comment Share on other sites More sharing options...
cygnusx1 Posted July 12, 2007 Share Posted July 12, 2007 Right. It idles well between 12.5 and 13.5. Idle advance on my turbo motor works well at 25btdc. Quote Link to comment Share on other sites More sharing options...
naviathan Posted July 12, 2007 Author Share Posted July 12, 2007 Wow, 25? I must be missing something here because doesn't the factory manual call for somewhere around 8 degrees? Quote Link to comment Share on other sites More sharing options...
naviathan Posted July 12, 2007 Author Share Posted July 12, 2007 Here's what I've got so far. Just incase someone would be gracious enough to look at my settings.... Of course my target AFR is set at 14.8 on a narrow band O2. How do you get the AFR tables to be selectable. I read some on the AFR tables, but they're grayed out for me. megasquirt200707112120.zip Quote Link to comment Share on other sites More sharing options...
naviathan Posted July 12, 2007 Author Share Posted July 12, 2007 Just bought the Clewett Engineering Bosch to GM IAC Adapter Body. This thing looks promising. They designed it for the Porsche which uses the same type of AAR that we do. Here's a pic of it: It's $96 which isn't bad when you consider what some of the IAC bodies are going for. Quote Link to comment Share on other sites More sharing options...
naviathan Posted July 13, 2007 Author Share Posted July 13, 2007 I just received my 240SX TPS. Had to order one from Advance, but it was cheap, only $25. I assume that the top connector can be ignored and the Red is power, black ground and white TPS correct? Quote Link to comment Share on other sites More sharing options...
naviathan Posted July 15, 2007 Author Share Posted July 15, 2007 Wow, the EFI harness is extremely easy to pull out. It took all of 15 minutes to completely remove the harness and have it on the ground. One question though, my 81 looks like it had dropping resistors in place. Will I need these when I put MS in? Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted July 15, 2007 Share Posted July 15, 2007 If you have the resistors I'd run them so that you don't have to mess with PWM settings, unless you have a flyback board add-on or the high current driver circuit in the v3 board. Mario Quote Link to comment Share on other sites More sharing options...
naviathan Posted July 15, 2007 Author Share Posted July 15, 2007 I have both the flyback circuits and the high current driver in my board. Although the high current driver I thought was for ignition, not fuel. In the tuning manual it says for low impedance injectors just to change the PWM % from 75 to 30. Seems pretty cut and dry to me. Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted July 15, 2007 Share Posted July 15, 2007 Ah yes sorry, for some reason I thought it was called something different in the v3 board. But yea, if you have the flyback board installed you don't need the resistors. Mario Quote Link to comment Share on other sites More sharing options...
naviathan Posted July 15, 2007 Author Share Posted July 15, 2007 Sweet, thanks so much Mario. The help is greatly appreciated. Quote Link to comment Share on other sites More sharing options...
naviathan Posted July 19, 2007 Author Share Posted July 19, 2007 Well, after a few bumps in the road the engine is back together. I'll have lots of pics to come. Still not real sure on my MSQ but the wiring is coming along nicely. I have to make a quick trip to the junk yard tomorrow for an IAC, but I have everything else I need I think. Funny I noticed on the injector connectors from DIY the red wire is actually on the ground side of the injector. Has anyone else noticed this? Anyhow, not a big deal, just glad I was looking for which side was hot. I have my MSA stage II cam in, PaceSetter header, which BTW, they chose a screwed up place to put the O2 bung. I don't have rack and pinion and the O2 hits the steering box. No biggie, it barely squeezed in there. I'll know tomorrow how things are going to run. Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted July 19, 2007 Share Posted July 19, 2007 WFunny I noticed on the injector connectors from DIY the red wire is actually on the ground side of the injector. Has anyone else noticed this? Anyhow, not a big deal, just glad I was looking for which side was hot. Actually, most injectors don't have any polarity at all and will work either way. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.