I've been reading up a lot since I bought the kit from justin. It's like reading a physics book. Just wondering if you guys have any constant values that worked well, like the pwm %. The car runs, but I dont have my new fans, so I can't drive it. I'm going to lower the timing a lot with tunercats, then I'm going to wire up the MS.

 

is it MS 2? i know you can enter values, and do an "auto correction" and it'll make changes for you that are optimal As far as values, i havent messed with MS in a while, i'd have to see the layout again

 

I think there is a messageboard for megasquirt somewhere. Someone there will give you a free baseline tune.

http://www.msefi.com/

 

No, but I can convert it to ms2. I'm only running fuel with it, so I dont really need the ms2 for timing.

 

Yea I checked on there, not too many lt1s though. Just wondering if anyone had used it on here.

 

The book really isn't that bad - by the time you are done you will have read it 10+ times

I figure 20-30 hours worth of build time and reading is still far cheaper than the other aftermarket setups.

What injectors are you running? PWM is just for low imp ones. Thats one area I can't help with much, I am running 60# high imp. But there is good info in the book on pwm.

 

I am looking at ordering mine as well, and using the stock comp. to control the tranny (for now). What PCB is it? 3 or 3.57?

 

Gonna be working on mine in the next few months. Gonna run emspro in a few months. Not going to be ltx based anymore though.

 

Well I was going to run my 42lb high imps off the stock pcm while I'm on 5psi, then when I got the 83s I was going to switch to ms. Now I think I'm going to switch over on the 42s and learn it, then switch to the 83s. I actually read it again and I set all my constants, ve tables, and other little stuff. I figured I'm in pharmacy school, this ms stuff cant be THAT hard. I just manned up and got through it, just been studying so much lately, it's hard for me to focus on other material.


It's the 2.2 I believe, with 8x8 ve tables. Just going to use it for fuel, stock pcm for timing.

 

Forgot to ask this before, do you have to splice into the stock harness? I want to buy all new injector plugs, coolant sensor and plug, and IAT + plug. I bought this harness a couple years ago b/c the PO cut and spliced mine and I had miss problems that could not be solved. The new harness cost me 1200 from GM, but it fixed my problems. I REALLY dont want to cut it up.

 

For you guys just running MS for fuel. In the stock pcm do you just leave the timing stock up until 100kpa, then put the timing you want to run on boost in the 100kpa cells?

 

I would do the 95 and 100kpa but ya that will work. You might find better spool times with less timing though. I suppose you could build a MS harness completely seperate, depending on where MS gets its input from.

You would need an extra iat and coolant sensor, just run ms with the wideband. What are you going to use to trigger MS with though? (for batch fuel injection could you just trigger off the negative side of the coil?)

 

You really think it will spool faster with less timing down low? I figured it would be peppy down low and spool faster with the added timing. Yea I'm going to get an extra IAT and coolant sensor. I forgot about the trigger thing, guess it needs to know when to fire the injectors huh

 

Every motor is different, but I know a lot of the import guys get better spool time with less timing,,, I guess less energy is tranfered in the power and more is wasted into the exhaust. Usually a bad thing, but since there is a turbo to spool.

Really there shouldn't be an issue with a 383 spooling a 76 though.

Play with it and see what works, less timing is safer. If it makes power and comes in faster all the better.

 

Yea I figure that's what I'm going to have to do anyways, just trying to get a decent starting point. Where are you getting your trigger from?