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slow 2K2GT

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Discussion starter · #1 ·
Well after some thought I decided to take the plunge and purchase a pre-built megasquirt kit (ms1) from KFXperformance after a long debacle with my current SMT-6 and built head.

In order to retain my stock harness I opted for the Stage2+, the MS is built into a stock ECU case and the harness plugs in like normal. After downloading the tuning software from their site I investigated the base N/A tune and it seems pretty decent, nothing magical but it will get the car started so you can use the "learn" feature. It has a built in 3bar MAP, will run dual batch injection for now until I install an expansion board for sequential.

I have been in contact with KFX and they will be adjusting my fuel values for 660cc injectors as opposed to the 190s, I also made mention of my head work and the low vac at idle and they will make corrections for that as well, however the fine tuning is still up to me even after the learn feature is used.


Everyone feel free to discuss issues which may arise when switching to a full standalone system.
 
#2 · (Edited)
I got the MegaSquirt system from them as well. I already have a base tune written for the car because I have 660cc injectors as well. Also, the timing on there base tune needs to backed down a bit, which I did on my tune. I have pictures here that I uploaded, but REMEMBER this is just making the fuel tables adjusted to run bigger injectors and the timing backed enough to make it drivable. Do not worry about changing the "Fuel VE Table" under basic settings because the target A/F ratio that I have linked below will auto correct those settings when the car is warming up (be sure to have the system use a wideband sensor only to determine your a/f ratio for auto tune adjustments).

http://www.tunerconcepts.net/forum/...27-Tuning-my-Turbo-Tiburon-with-MegaSquirt-Standalone-II-System&p=7535#post7535 (Information for the tune is on the first page).

You must take this to a dyno to properly tune it. Also be aware that the ECM will NOT SUPPORT knock sense until you upgrade to a higher version firmware. The current version being used is the only version that is happy with our sensors, so until they fix the issues on the MegaSquirt 3 (which you can upgrade the board CPU and reflash the unit to support the features) you are stuck with doing a knock light or a microphone on the dyno.
 
Discussion starter · #3 ·
Thanks I will take a look at your page soon, I arrive back in Canada in Sept for a few weeks so I will do all the install then but hopefully the kinks are worked out before hand.

For KNOCK sense I have a set of 'det cans' which work really well, a DSM friend of mine introduced me to them a while back. Is there any need to install an MSD ignition for timing control or does the MS do a good enough job?
 
#5 ·
slow 2K2GT said:
Well after some thought I decided to take the plunge and purchase a pre-built megasquirt kit (ms1) from KFXperformance after a long debacle with my current SMT-6 and built head.

In order to retain my stock harness I opted for the Stage2+, the MS is built into a stock ECU case and the harness plugs in like normal. After downloading the tuning software from their site I investigated the base N/A tune and it seems pretty decent, nothing magical but it will get the car started so you can use the "learn" feature. It has a built in 3bar MAP, will run dual batch injection for now until I install an expansion board for sequential.

I have been in contact with KFX and they will be adjusting my fuel values for 660cc injectors as opposed to the 190s, I also made mention of my head work and the low vac at idle and they will make corrections for that as well, however the fine tuning is still up to me even after the learn feature is used.


Everyone feel free to discuss issues which may arise when switching to a full standalone system.
Click to expand...
Holy ****, i thought they only did older 97-2000 tiburons...... looks like im throwing my FIC in the trashcan......

Anyway, the only issue i would be worried about would be the AC kicking on and off and the motor trying to stall out. I'm not sure if the megasquirt has a compensation for idle and fuel adjustment when the engine goes under a litle more load for ac. the af ratios will change obvioulsy with slightly more load on the engine. Other than that if you can add knock sensor feature in and sequential fuel injection id say go for it. it'll get rid of the junk obd2 ecu we have and allow for an easier tuning experience and better drivability.

A guy i know has it on an old 280z with a turbo setup and he LOVES it. says its the best engine managment he's messed with to date. He said he's tried almost everything (emange, safc, few other misc ones)

Im seriously considering going this route myself. ive just installed my aem fic for the 2nd time now and still trying to get it to run right and im tired of hacking up my harness.... Im about ready to throw it in the trash and jump on the megasquirt bandwagon.
 
Discussion starter · #6 ·
They will make compensations for AC and fan control as well...however for me its not an issue because I dont have AC installed.

For the description of 'det cans' try this http://forums.neons.org/viewtopic.php?t=295450&highlight=det , you look pretty goofy wearing them while driving but you can hear individual cylinder events which is very nice.
 
#7 ·
I came across a DIY on a specific version of knock cans. I posted it here with full credit to the source:

http://www.tunerconcepts.net/forum/showthread.php?832-DIY-Audio-Knock-Kit&p=7555#post7555

Personally, I like this method better, and also I have used that item (demo purposes when selling it at my work) and it works well. Reminds me of the old fashion method of putting your ear on a screw driver and pressing it to the cylinder head to listen to your valve train.
 
#8 ·
noobs. lol.

Derek, I think the first set would look much nicer with the orange hoses. It'll match your solstice.
 
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#11 ·
ROFL....

Without the ability to sense and adjust for knock you WILL need to tune on a loaded dyno and spend hours and hours getting things safe especially with boost. My suggested would be tune at 500 rpm at a time and go through each load cell. WOT tuning is cake compared to tuning for all the various low throttle boosted conditions.
Imagine going up a long hill and you get the picture. Typically your not WOT going up a hill so you will be in low throttle cells but have boost as well. Too high of ignition timing and EGTs WILL melt your engine unless tuned properly. Oh, and I would not trust the auto tune feature until you at least get the tune close on a dyno. From that point the auto tune can fill in the blanks.
A Full Standalone ECU is not something to be taken lightly and a basemap is just that. A map that will start and drive the car, nothing more. Its meant to get the car to the dyno, that's it!!
 
Discussion starter · #12 ·
I am looking into an aftermarket knock detection unit so at least there is something. I dont exactly need the factory unit to function as long as I have a way to detect small knock before it gets ugly.
 
#14 ·
slow 2K2GT said:
I am looking into an aftermarket knock detection unit so at least there is something. I dont exactly need the factory unit to function as long as I have a way to detect small knock before it gets ugly.
Click to expand...
J&S safeguard Vampire maybe?
:3_yes:
 
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Discussion starter · #15 ·
Yepper m4rk1z thats what I was thinking too, I sent them an email for pricing, I know a guy who has used the same unit with great success.

Will see what comes from it but I dont feel totally comfortable with just a knocklite.
 
#16 ·
Well according to MegaSquirt, I found out that the hardware that has been supplied to us DOES support the use of knock (there is a DIY on how to add it on BOTH MS1 and MS2). I'm curious why the KFX guy said it will not work with the firmware version as the compatibility with most cars have increased on the later versions in terms of sensor support with most vehicles. Im wondering what version they are using?
 
#18 ·
I don't know about the Tiburon or if it would be different, but my Dad has a megasquirted 73 Opel GT (MS2) and I know it has knock support.
 
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#19 ·
You do not need an expansion board to add knock support. There's a seperate section on the breadboard for adding the ability. Simple resistor and wire connection, and just update the firmware.

A lot of people arent aware of how simple MegaSquirt is, you can even go ahead and upgrade yours to MegaSquirt 2 if you wish by simply pulling the processor, and installing the MegaSquirt 2 core, then upgrade your firmware... no expansion needed. The expansion board your mentioning is called a daughter board, which has a different purpose which is not needed for our application.
 
#20 ·
slow 2K2GT said:
Yepper m4rk1z thats what I was thinking too, I sent them an email for pricing, I know a guy who has used the same unit with great success.

Will see what comes from it but I dont feel totally comfortable with just a knocklite.
Click to expand...
Hi!

I m using it more than 3 years now, i was forced to find some solution b/c the pump gas
in my country SUX big time, so detonation was my friend :3_wink:
It is a little bit pricey but it does the job very well and i m happy with the safeguard as i can
not retarded my ignition in my smt6 software ( i m only taping my cps).

It is a good solution and i hope that you can use it together with your MS.
:3_shiny:
 
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dmdicks
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