13b-rotary-vw

Using the stock CAS what settings does the current Tuner studio need to be in, does the CAS need any mods (tooth removal), and how does it know which trailing plug to fire ??? I have the Zeal daughter board installed and it should be in properly. I am trying to test my Mega squirt with some of the components such as the ignition coils (stock FC leading and trailing) BAC valve and any others to be sure that everything is going to work...

Please anyone with experiance on this, any info will help thanks....

rxtasy3

iTrader: (2)

u have a high enough post count to get out of the new member section. a lot of the more knowledgeable people don't bother with the new member section so check the megasquirt section of the engine management forum. https://www.rx7club.com/megasquirt-forum-153/

Aaron Cake

iTrader: (1)

Which MS version?

The CAS can be run unmodified with your Zeal card.

You'll find the appropriate settings for your ECU here:
http://www.aaroncake.net/rx-7/megasquirt

ka24det92

iTrader: (3)

Is ms good for an fd

Aaron Cake

iTrader: (1)

The Megasquirt will run damn near anything. There have been few installs on FDs, but that's because FD owners tend to stay within a narrow range of common "approved" ECUs.

lastphaseofthis

iTrader: (8)

oh my, you have a VERY nice right up, that anyone going ms should read.
i'm not even going MS and i enjoyed it so much, that i just may end up with an ms3x

psssh,, as always tho aaron .

ka24det92

iTrader: (3)

What would be the approved ecus

Aaron Cake

iTrader: (1)

Haltech and PFC mainly. Most FDs are running those ECUs.

In the FD world, trying another ECU is blasphemy. Witness the latest Megasquirt topic started in the FD forum which had to be moved to the Megasquirt forum...

13b-rotary-vw

Hey thanks Aaron,

I've been all over your page (great job by the way), but I'm just quadruple checking myself throughout this build to make sure that I'm not missing a newer way of doing things. I think I'm confusing myself by looking at so many sites...I just really wonder how the ECU knows how to fire the trailings independently with out reference, unless...the trailing is firing in wasted spark also..? which I thought could not be done.

Aaron Cake

iTrader: (1)

Not sure what reference you mean. The position of the ECU is known at all times, so it knows when to fire the trailings. Which plug is fired depends on whether the trailing select has been toggled or not. No pulse to trailing select and T1 fires. Pulse trailing select and then pulse trailing fire and T2 is fired.

Sgtblue

iTrader: (16)

I think MS isn't popular with FD owners for a reason. There are better/easier options for most of us. If you like MS, and/or don't have the money for something else, then give it a run. I haven't checked for a while, but last time I did I could only find 2 or 3 in varying stages of 'trying'.
Every time someone suggests it isn't the best option it's "hating" or insinuating some sort of snob appeal because of the pricier options. It isn't. I think most FD owners aren't tuners and don't want to be. They'd just rather install, start, get it tuned and enjoy their cars with some safety. From what I can tell from MS, it's less money, but alot more work. With no benefit in performance over other standalones.

Aaron Cake

iTrader: (1)

That's the misconception though. It seems as if the FD world looked at the Megasquirt sometime around 2005, saw the fairly primitive and major DIY state of the thing, and then since then it's been taboo in the FD world. Now up until the MS3, no one would argue that installing a Megasquirt would require a more in depth knowledge than the typical standalone install. Even though the circuit building could be basically eliminated, the ECU did require modding to support FC/FD triggers and coils. The software settings were no more arcane than those of any other common full standalone and rotary settings are well documented. They can just be plugged into the ECU and it will now trigger properly.

Over the past two years, the availability of the MS3 has made all of the previous MS installation quirks redundant. The MS3 is configured to the rotary simply by setting 2 jumpers and turning 4 pots fully counterclockwise. There are no mods required to the ECU, only the addition of one wire to the harness, and the software settings are again well documented.

Personal preference, but I've always found Megatune to be the most user friendly and straightforward tuning software of all the standalones. TunerStudio, I think everyone would agree, is easily comparable in ease of use and user friendlyness to all the popular modern ECUs.

13b-rotary-vw

I realize now that the CAS rotates 2:1 of the E-shaft, meaning that the ECU detects the pulse of the 180 degree blades as TDC. I was missing that information thinking that the CAS was 1:1.

Problem solved