420A 2gNT Megasquirt?

[dsm9]

Complete 420A Megasquirt EMS Kit - SymTech Laboratories

if i purchased this kit, would it have everything i needed to run it as a standalone unit and get rid of my stock ecu??? also i see it has an option for the wideband sensors, but i already have one. do you have to put wideband sensors in the stock sensor's place? for fuel im gonna be running an sfmu, will i have to change that? im sure ill have more questions, thanks for any input/ advice.

BM

 

[VelocitàPaola]

if i purchased this kit, would it have everything i needed to run it as a standalone unit and get rid of my stock ecu???

Yes.

also i see it has an option for the wideband sensors, but i already have one. do you have to put wideband sensors in the stock sensor's place?

You don't have to, but you can install your wideband oxygen sensor there if you're going to remove the stock ECU altogether.

for fuel im gonna be running an sfmu, will i have to change that?

You could technically do that, but most Megasquirt users use a 1:1 AFPR (Aeromotive makes a good one). An S-FMU will make tuning much more difficult, plus you won't have the benefit of using other users' MSQ files to help you get started.

 

[dsm9]

thanks for your input sir, you are a very wise man.
how hard is it to tune the afpr? what about the sensor post-cat? and i have seen some sensors from symtech that are for megasquirt would i have to purchase those?
thanks

 

[VelocitàPaola]

how hard is it to tune the afpr?

It's not difficult. You simply set the base fuel pressure and then leave it alone.

what about the sensor post-cat?

Leave it disconnected or plug the hole.

and i have seen some sensors from symtech that are for megasquirt would i have to purchase those?

The MS-II based ECU's in those kits can interface with all of the stock sensors; no additional sensors required.

 

[dsm9]

ok so basically with megasquirt your just making your own ecu that will accomadate boost? thats cool. and what yould happen if i did leave the oxygen sensor post cat in because i just spent $80 on it.

 

[VelocitàPaola]

You could leave it installed, but Megasquirt won't be using it.

 

[bagged420a]

Would there be any reasons not to run megasquirt as a standalone?

 

[VelocitàPaola]

There are a few... installing the Megasquirt ECU in parallel with the stock ECU is easier. Just giving Megasquirt control over the fuel injectors (and not spark) is also easier to tune. Most users who are new to tuning begin learning this way, then add spark control later.

 

[bagged420a]

So, by adding spark the megasquirt becomes standalone?

 

[VelocitàPaola]

No, but it's one step.

 

[bagged420a]

Just checking. I'm with portfueler now, but my head is at the machine shop and my mind keeps drifting to the megasquirt

 

[dsm9]

i know this is a really old thread, but im finally about to buy the symtechlabs 420a kit. Complete 420A/Neon MegaSquirt EMS Kit - SymTech Laboratories
im also going to buy a aeromotive afpr kit EXTREME PSI : Your #1 Source for In Stock Performance Parts and would like to know how to install it and uninstall/disable my stock fpr. also, if anyone in my area ,Virginia Beach, VA, knows how to tune MSnS or any reputable dyno tuning shops i could take my car after i install MSnS

 

[sek_phok]

No, but it's one step.

What else is needed to make it a standalone?

 

[KazooGS-T]

What else is needed to make it a standalone?

Remove the stock ecu.

 

[VelocitàPaola]

What else is needed to make it a standalone?

At least a tachometer output and relay control circuit inside the MS ECU. The stepper IAC circuit isn't a bad idea if you're going for a factory-like idle.

You need to wire the fuel pump and ASD relays in such a way that they're both controlled by the fuel pump relay control wire. You'll also need an alternator voltage regulator.

 

[96TurboGS]

if anyone in my area ,Virginia Beach, VA, knows how to tune MSnS or any reputable dyno tuning shops i could take my car after i install MSnS

You can try pftuning, it’s based in VA Beach. Peter Florence is experienced with tuning (dyno) and repairing MS on just about any car. You can contact him @ pftuning.com and on msextra.com user name Peter Florence.