Ozzie831 Posted December 7, 2014 Share Posted December 7, 2014 Hey everyone, i got my car kinda running today yay! It runs like crap, but it's running. I dont know what to look for to make it run better, im not a tuner by any means. It wont Idle but if I keep giving it gas then it will stay alive. It sounds like its running well at the higher RPMs versus the lower and mid ranges. The car is a 77 280z, MS2 V3.57. Im hoping to hear some suggestions to make the tune better. Thank you for the help. Feel free to ask any questions. Tune.rar Quote Link to comment Share on other sites More sharing options...
skirkland1980 Posted December 8, 2014 Share Posted December 8, 2014 Check your ignition timing first. Quote Link to comment Share on other sites More sharing options...
dexter72 Posted December 8, 2014 Share Posted December 8, 2014 Look for peoples tunes that are close to how your engine is set up, copy them and compare the settings and tables to yours. I wouldn't do anything else until you can get the engine to idle well and on its own. Look on youtube for Cygnus megasquirt settings, he posted a video of his settings there, download that video. If you don't have a wideband get yourself one asap. If you have a wideband remove the sensor until you can get the engine idling and running smooth at idle. You can ruin the senor if you don't. What is your setup??. Stock engine and injectors, Turbo, with which c.c. injectors, non-turbo, fuel only, and so on. Quote Link to comment Share on other sites More sharing options...
winstonusmc Posted December 8, 2014 Share Posted December 8, 2014 You can definitely tune the idle afr by ear. Use many carb methods to tune the idle. Just lean it till it stumble then richen it till smooth. Of course, make sure you time it correctly first. I got my L28ET around 13.5 that way without a wide band. Quote Link to comment Share on other sites More sharing options...
Ozzie831 Posted December 8, 2014 Author Share Posted December 8, 2014 1977 Datsun 280z 4 speed 2.8L (Turbo-ed) MS2 V3.57 Upgraded alternator to a mid 80s Nissan Altima (90amp). MSD 6AL MSD Blaster 2 Coil Generic Megasquirt Wiring Harness 280zx Turbo Distributor Electric Fans 55lb Sieman Deka Injectors Innovate Wideband O2 3" Intercooler Pipes I have looked through one guys tune. Thats how I got it to finally start running. I made a hybrid between that one and the tune that I had from my MS1. Quote Link to comment Share on other sites More sharing options...
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