MSefi.com read only forum (Jan.15,2018)

Thanks Matt! I was not getting my subscriptions so it took a little while for me to realize you had responded (okay a LONG while...) :(

Okay I am missing something basic here (other than just sleep :lol: ). ...
What did me in? Well pin 2 on the module is the ground. And internally it is connected ...

So I am dealing with a simular project in a few ways. Not to go into that here, but I have done simular now, and in the past.

So for these Lucas ECU replacements ALL you want is fuel control? I would suggjest a little bit of ectra effort and brainstorming making it a simple extra step up to full ...

Can anyone explain in detail the differances electricaly in operation and what occurs in MegaSquirt between inverted and non inverted control?

I am still trying to wrap my brain around this and figure out how this module functions in its stock configuration.

Okay I am missing something basic here (other than just sleep :lol: ). Posted up another thread about converting a 139 Ignition module to a 124 style. But anyways now that I have this module gutted and open, I see something that crashes my brain. And I realize I am likely missing something basic in ...

Also while everyone usally checks over grounds really well, take a really good look at the power distribution side of things. I have spent more time than I would care to admit to tracign down random issues like this to find a bad power cable on the battery.

I remeber once staring at battery ...

This may not be relevant here, but I have seen almost this exact set of described problems a few times before. The first time it stumped the heck out of me. On installs that have been in service for many, many miles, the DB 37 plug pins can get fatigued. The culprit usally seems to be the fuel pump ...

For many years I have personally run, and installed many more Bosch Ignition modules. These babies are damn near bulletproof. I can not say I have ever seen one that has failed. If so, infrequent enough that I do not remember replacing any... :shock:

But they do have a weakness. It is pretty much ...

I Posted a thread on my questions here: viewtopic.php?f=89&t=41391

I finally got my Megasquirt up and running on my Jeep CJ7's 258 last night....

Would you be willing to share details of your ignition interface and setup? I am new to Jeeps (Sparkin a buddies) and for the life of me I can't find ANY solid information out there on the ignition system in this CJ7 ...

If you go look on the site, it seems it is functioning now for MS2, and MS2 extra now also.

There is a really good book out there called Performance Fuel Injection. It has some really good information in it on building your own harnesses. You can find it here: http://www.DIYAutoTune.com/catalog/performance-fuel-injection-systems-hp-books-p-436.html In fact the guys over there at ...

A dual processor board was made a while back by Emtech Motorsports and sold by Glen's Garage. http://www.glensgarage.com/catalog/msexp-dual-processor-expansion-board-p-89.html

I am not completely sure if it is what your after as it almost sounds like you want to just "swap processors" without ...

Mike_Robert wrote:What was the failure mode of the open-element sensors? Hopefully not pieces falling out of them!

-Mike

I think one of those aircooled VW engines could vibrate ANYTHING apart....

The people talking advantage of VW sensors do so only from a perspective of cost. As for the place holder, one of the VW block off plugs can EASILY be drilled out and tapped for the GM sensors.

Harness? Well more than 90% of my installs use all new plugs and wiring.... The cost of using old plugs ...

Not sure what car that sensor is off of.... As I posted in another thread the Bosch sensors are junk. Calibrating them is near impossible and if you ever change the sensor you very well may have to recalibrate it. The Bosch temp sensor tolorances litterly are that bad!

Want the simple answer? Run ...

Been doing installs for a while now. If you can run the GM stuff, they are a LOT BETTER than the Bosch temp sensors. The bosch sensors suprisingly are not built to the tolerances the GM ones are. And I am a diehard Euro cars guy too. I run GM sensors in all my cars and most of my installs.

Put the water injection nozzle before the IAT. I try to have it 6-8 inches before too so it gets a better picture of the temp drop introduced by the water injection. I have not seen an increase in IAT failures on any of the water injected cars I have owned or played with. If your still concerned ...

I am not an expert on hot air systems... But I did a lot of research when looking for my station. Hot air systems are more geared towards reworking and repair of surface mount boards. I don't think one would WANT to spend 5hrs listening to a noisy hot airsystem. You use it for the neccisary job and ...

...My lap top has wireless and It is how I use it to do everything so I know this would work for megasquirt programing.

Its not that easy or everyone would be doing it. Simply put there is NO wireless solution thats perfect for this. Less expensive solutions have questionable links. Better links ...

First off you DO NOT want the ECU under the hood. Descicant isn't going to cut it. The issue is heat, moisture and vibration. Not all the components in the ECU are rated for the heat and the extra vibration isn't good either.

If you absolutly had to have it under the hood, then you need to make ...