Need to know about map ecu 1

[Turb0wned]

I keep reading mixed reviews about it. Does it or does it not work well with karman vortex cars? I contacted mapecu directly and they say that it does work well.

[98mkiv]

KV is a difficult proposition, not for the hardware but for the installer. It uses a frequency type output. Because of this it is not easily measured. You need to understand the output of the meter in HZ and be able to tune to that. It's a little more complex than the newer (obd2) 0-5v type meters.

It's designed to work with either, but the ultimately the installer is the one who makes it work by setting it up properly.

Mark

[dejacky]

I keep reading mixed reviews about it. Does it or does it not work well with karman vortex cars? I contacted mapecu directly and they say that it does work well. I'm speaking from experience when I say the following:

Map-ecu 1 work okay with karmen vortex 2jz-ge na-t cars up to about 440cc injector size. Once, you use a larger injector size than that, it's gets more and more difficult to have decent driveability because you have a very limited numerical range of values within each tuning cell. I had 550cc injectors with map-ecu 1 and it never ran properly and I tried everything...this is just my $0.02.

[Turb0wned]

Hummm... Can anyone else comfirm this?

[98mkiv]

I tend to agree with Dejacky, though I have had good luck with it, tuning a KV car is difficult, the logic with the frequency type meters is not as easy to understand as a 0-5v meter. It's also difficult to troubleshoot without a scope and some decent electronics knowledge.

[UF-Supra]

I'm speaking from experience when I say the following:

Map-ecu 1 work okay with karmen vortex 2jz-ge na-t cars up to about 440cc injector size. Once, you use a larger injector size than that, it's gets more and more difficult to have decent driveability because you have a very limited numerical range of values within each tuning cell. I had 550cc injectors with map-ecu 1 and it never ran properly and I tried everything...this is just my $0.02.


I'm pretty much in agreement here.

I deluded myself for a long time about the Map-Ecu, thinking it was just my tune and given enough time I would fix it. I've been running the Map-Ecu for about 1.5 years now and have come to the conclusion that it is just not a good match for our KV based systems.

WOT tuning (>3500 rpm) has never been a problem and stays very consistent for me. However its like everyone else says, it has some pretty big issues for daily driving. Just around town I've seen lower average rpm A:F's swing in excess of +-1.5 for NO apparent reason. Yes you can learn to drive around them as I have, but you shouldn't have to. I no longer recommend this setup to anyone with a KV based car. I actually have my sights set on the mega squirt now...:thumbup:

[Turb0wned]

Would you guys recomend then (besides AEM, this is something i wont be doing till the end of this year) that i can use to get rid of my maf, and help with my stall problem (stalls even without a bov).

[98mkiv]

to get rid of the maf there are few choices: emanage ultimate, mapecu 1 or 2 and AEM FI/C (only for OBD2 0-5v maf cars).

OH and of course, MEGASQUIRT.... (please do this one, please.... I want to see this implemented, it's cheap)

Mark

[Turb0wned]

Dont you have to build a MEGASQUIRT? Im not familiar with it. Do they sell already assembled kits?

[98mkiv]

you can buy them prebuilt (check ebay)

[Turb0wned]

So for example.. This one would work fine on my car?....

http://cgi.ebay.com/MEGASQUIRT-PCB3-Standalone-EFI-System-turbo-na-ECU_W0QQitemZ230217127349QQihZ013QQcategoryZ33596Q QssPageNameZWDVWQQrdZ1QQcmdZViewItem

[Turb0wned]

Anyone??????

[Bean]

Check the megasquirt website, they have a list of good vendors at the top of the main page. They've had reports of people getting scammed on ebay.

[98mkiv]

the link you posted is for a guy with > 1300FB, and 99%+ he is safe to go with.

[Turb0wned]

Well i just wanted to know if something like that would work for when i start looking to buy one. Sorry about all the questions but im new to megasquirt, lets say i were to get that pre assembled kit, what else would i need???? Im confused with this. First time hearing about megasquirt.

[98mkiv]

mainly you will need time and lots of connector pins or solder/shrinkwrap. If you are keeping the distributor (and why not?) you should not need much more. I have not tried it myself so take this a 'uninformed' advice

Mark

[Bean]

The 2jz distributor puts out the same signal the 7M CPS does and its been decoded to work with both the MS1 and MS2 but both require the -Extra code (MSnS-Extra or MS2-Extra). http://www.msextra.com I think is the website.

Two signals are coming from the distributor so a second VR circuit has to be built on the MS unit.
http://www.msextra.com/ms2extra/MS2-Extra_Nippon.htm

Its very indepth and requires soldering skills.

[ZSC3]

got a newbie question, what is karmen vortex, i will be running 550cc injectors with the map ecu1.

[Gunnar]

Karman Vortex is the kind of MAF that the OBD1 cars have.

[jessupra]

do jdm na run karman vortex.

[chopstickz]

no