MS2 rpm output

klh6686 · Post by **klh6686** » Sat Apr 22, 2006 11:11 pm

Hello all, i'm currently in the research and plan stages regarding the engine management of my latest project and i am trying to get an idea for everything. I'm HIGHLY considering the MS2 to control my motor, however i haven't been able to find any answers regarding a couple of things.

First, the motor is going to be a nissan rb25det straight 6. the chassis is a 89 nissan 240sx coupe. basically my first question is if i were to use the ford edis system, would the ms2 be able to send a modified tach signal to the stock 240sx cluster since the engine is a 6 cyl and the cluster is made for a 4 cyl?

Also, i know that the ms2 is open source and highly customizable, is there any way to control boost using a cheap solenoid?

Another thing i wanted to find out about was how do most of you handle the ignition side of things regarding knock/detonation. is there a 3rd party knock sensor kinda like a wideband 02 sensor, or do you do things using a stock knock sensor? basically i would want the ms2 to pull back timing if experiencing knock.

Right now this is all i can thing of as its 3:10 am and im about researched out for the night. i appreciate all replys and hopefully i won't get flamed too bad, i know im a newbie and all but man is it hard to find a straight answer. Thanks in advance

jsmcortina · Post by **jsmcortina** » Sun Apr 23, 2006 4:55 am

At present there is no way for the MS2 to output a modified tach signal, although the code could be modified to do so.

James

KrautFed · Post by **KrautFed** » Tue May 09, 2006 8:26 am

I would like more info on modifying the code

jsmcortina · Post by **jsmcortina** » Tue May 09, 2006 8:35 am

Start with
http://www.megasquirt.info/ms2
and then choose Embedded code on the left hand pane. From there you can download the entire source code and there are links to compilers and development environments.

James

wes kiser · Post by **wes kiser** » Tue May 09, 2006 8:38 am

I think you can just build the tach driver circuit like is shown on the EDIS page, but only install it on 2 of the 3 coil packs. The only problem I can see with this is it will be somewhat of an uneven signal, but I would think it would still work depending on the damping in the factory tach circuit.