Here is a more recent MSQ from my track car. Modified from the previous version to use BDC's timing map, a 30 us spark latency, and corrected trailing.

S5 engine, intake, exhaust
MS1 v2.2 with Error*s daughtercard
MSnSExtra, 029Y4 code, Fuel and Ignition

 

Here's what I am running in my GSL-SE engined RX-7. Using all of the stock sensors except for the IAT (GM wire type), no injector resistors or flyback *board*, no EGO correction, nice and lean under cruise, no fast idle. Basically the minimum install to get a GSL-SE engine up and running.

This should be useful to someone who is not interested in quad staged injectors or ignition control. Injectors are both run off of INJ1.

There is a text file included in the ZIP as well.

 

i need something for big over lap engine Pref port and turbo to 20psi and 9500 RPM

could some one plot me one with my spec's ?

750 primarys and 1600 secondarys these are low imp injectors

running wide band lc-1, 60mm wastegate, turbo is GT32r wif 1.02 rear

running dual vr conditioners blah blah MS1 V3.0 Board

 

sorry rx3_pp cant help you with a map for that... might just take some trial and error.

I finally have an MSQ almost worthy of publishing...

Engine: 13B Extend Port N/A
MS Version: MS2
Firmware Version: MS2 Extra 1.0.2
Ignition Setup: CAS with VR Conditioner Circuit built in proto area of v3 board and FC coils, as per guide: http://stuff.pw.cx/Megasquirt%20MS2%...azda%20CAS.pdf

Idle at 700rpm
4x550cc injectors
Injection perfection/IDA type throttle body

Under cold start I still need to use the throttle to keep it running, but once the temp passes about 80C it seems to idle ok. This is probably because my idle is set so low Once its warm though its fine.

The fuel map was originally based on what my engine builder had tuned to, but since then I have logged 2 drives and adjusted the fuel map based on the wideband o2 sensor logs and megalogviewer analyse function.

The MSQ: http://stuff.pw.cx/megasquirt200803122137wed_night.msq





When I first was reading the forums I was hoping that I could just load in an MSQ from someone else and all would be well, but as I have read many times you really need to tune to your own specific car setup as there are so many variables!!

The biggest help was having the wideband o2 sensor - once I got that i was on the express route to success!!! Within 20 minutes I had tuned my voltage drop compensation (was on 0.1, now 0.35) and suddenly i was no longer stalling randomly

So anyone out there who really wants to get their car running right, i cant recommend enough that you should get a wideband sensor and controller and wire it into the megasquirt...

Other peoples MSQ's can provide a good base to start on but you will definitely need to tune some more to suit your car exactly

Good luck! I will post an update next time I feel I have made some big steps forward

Paul.

 

Ok im new with megasqurt. I need a map but im unsure which one to use. I have a halfbridge turbo. 550cc primaries and 1600cc secondaries. Using gm iat and coolant temp. Built the second vr circuit, and both flyback circuits. I have msII3.0
And megatune2.8. Thanks

 

Lets keep this going. This could be very useful for all of us.

 

Make your own file. 3ms fuel will idle it fine. Bodge that up and feel it out its really not that hard. Noone elses map is gonna work for your particular ports.

 

It'd be sweet to see an MSQ for an S4 TII running a MSII V3....

 

Engine : 13b rew street port
Ms version: ms2 v3.0
firmware:msextra 2.1.0
Ignition setup: stock rew crank trigger with dual vr sensor

feul: 4x850cc with 1600cc of meth so the map would be useless to most. But I will post it anyways
Boost was running higher then ms could read lol.

 

I finally got mine after all this time to hold a steady idle, accelerate properly even when cold (and slow parking lot style maneuvers), and cruise with a decent AFR. There's still more tinkering to be done, and it burns pretty rich for right now, but this one definitely works well.

The 2 things I've found that are super important to getting a proper tune:

1) Install a 0.1uF capacitor on the boot jumper. This filters out a bunch of noise that the alternator will make. Even if you have a large battery like I do, the MS will still see a bunch of unnecessary noise for some reason. The 0.1uF cap will take care of that easily.

2) The map sensor will pick up every little pulse in the intake. The MS is fast, so it tries to account for that and will make holding an idle nearly impossible. Thanks to forum member RotaryMike, I installed a small inline carburetor fuel filter in the vacuum line going to the map sensor and the engine was finally, after all this time, able to hold an idle. I could even lean the idle portion of the map out SIGNIFICANTLY afterwards. I was able to take out over 30% in the idle area after installing a $10 fuel filter in the map sensing line!

Also, the ECU is wired as such:
http://i307.photobucket.com/albums/n..._schematic.gif

I'm running MS2 v3, firmware version 3.1.1
550cc primaries, 720cc secondaries, stock turbo, stock ports, walbro 255, 3" exhaust.

 

I've never actually needed this.

We've also changed the MAP sampling algorithm in later alpha/beta firmware on MS2 and MS3 and that has resulted in a much improved MAP signal without any special fuel filters or anything like that. Even with the current algorithm, you can usually get a stable MAP signal by adjusting the MAP sample angle.

Ken

 

I noticed on a datalog one day that I was seeing some pretty significant swings in voltage for some reason. After installing the filtering cap, I was able to actually read the datalogs. There was a ton of noise that just made it nearly impossible to figure out what the input/output values were supposed to really be! However, I think this was all really a band-aid to fix the real issue at hand here, which is explained in #2. The fuel filter fixed 90% of all my issues.

After reading your post, I went back to read the MS2Extra manual, but I didn't find anything there about the MAP angle setting. Only when looking at the MS3extra manual did I find what you were talking about. This is an issue I run into a lot. While I understand the software is constantly changing, I just really wish the manual would reflect the changes. Most times I end up fooling with settings I don't understand and can't figure out really what it's supposed to do in the end anyways. I get the idea behind the map sampling algorithm; it only samples the map at a certain angle, as specified by the CAS. I just wish that I knew what it did earlier! If the tuning manual was laid out with explanations of what everything did and how to adjust it, it'd be much more effective. For the most part, I find myself flipping between MS2 and MS3 tuning manuals, filtering out things that are ONLY for MS3 and using what I hope is applicable to MS2.

 

I've got a Megasquirt not yet installed in the car that has passed bench testing performed so far.

The engine is an FC, TII S5 variant, stock inlet with 4 injectors. I want to use the BAC for idle control and a wideband O2 for closed loop fuel. MS3 PCB 3.0 and MS3X, Firmware 1.2.0, FC CAS (two VRs), 4 ignition coils (LS2), and full sequential injection

If anybody might have a similar setup it would be much appreciated if you could post the MSQ.

I have a thread over on Ausrotary with some pics and info on the build so far:
AusRotary.com • View topic - Megasquirt 3, PCB 3 and MS3X expander to run a 13B turbo


Thanks!

 

This tune is for a s4 rx7 NA 6 port secondary bridgeport 13b, dyno tuned but only to about 6500rpm as the owner didn't have much gas when he turned up to get it tuned so they left it at that, stock intake, 460cc primary, 550 secondarys 201hp @ wheels at 6500rpm
I changed the file extention to .zip so I could post it you will need to change it to .msq to use it

 

Sorry I forgot the important bit its ms1/extra 029y3

 

Hi All

Here is a program that people can use. Follow Aaron’s video for the install and testing your wiring.

I am using the latest firmware 1.2.11 off the DIY Tune disc an operating a MS3-Pro unit.
This is on 1986 Mazda RX7 13B NA with resistor pack injectors 460 Primary and 600 secondary (MS3-Pro runs both type of injectors), stock CAS, stock coils, LC-1 Lambda sensor, GM TSP, Water Temp Sensor, Air Temp Sensor, 3bar Vacuum Sensor (DIY Tune).
Engine modification is large street port equal to SCCA EP regulations through header and 3” exhaust.

This set up is for getting you started and driving with slow to medium throttle response. I have not spent a lot of time with it but it has a good idle. Good cold start (Temp starts at 50 Deg.) and drives with out major lean spots but may be fat here and there. No work has been done on acceleration pump system. All so the set up is set for timing off the map not for setting your timing.
Take note if you are working on a stock engine then try to go leaner on the after fuel set up on cold start and lighter on the fuel table (Try 20% just a guess). If you operating bigger porting run richer to have it start up and drive better.
I had the satisfaction of using a MS1 unit on a V3 board so with my experience going to this was a bit of a test but not too bad. Good news it looks like I will be racing two weeks from now in Oregon in Grass Valley.

Good Luck with your set up and tune