Okay, I have a built NA motor installed with 11:1 compression, and a few other goodies. I thought that I could install an air fuel controller to get more fuel to the motor and optimize performance. I just found out though that the AFC will only control either the MAF or MAP sensor (I can't remember which one) Does anyone have any EMS suggestions other than a full standalone. I have read that most boosted applications use a Unichip but I don't think it will work for me. Are there any NA experts out there that can help me? I read something about a Protuner? Does anyone know anything about this? Any help is appreciated.
Ems Help!
- Thread starter p5_jeff
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Maxx Mazda
Contributor
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- Stock P5
You can use the DSM AFC. It's setup to come "alive" at 1psi of boost, but you can change it to 20" of vac or whatever, basically giving you standalone fuel control. To get more power with your setup, I'd ge the MP3 ECU (timing is advanced as hell, and the power delivery is nice and linear) and then get the AFC.
WRCprotege
Member
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- 03 Protege5 91 miata
11:1 compression pistons...where did you get those and cost???i want some, and do you have to have engine management to run those???
Maxx Mazda
Contributor
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- Stock P5
Maxx Mazda
Contributor
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- Stock P5
Jeph said:
I disagree. I would think that the stock ECU would be able to compensate.
engine should WORK with higher comp pistons - but it wouldn't be advisable.
I'd certainly want to be controlling the timing etc.
you've built an NA motor, you've got high comp pistons, you've probably spent big dollars elsewhere - why skrimp at the last minute?
Best way to safe guard your investment is to get a piggy back or standalone.
Maxx Mazda: not sure how the stock ecu would be able to compensate - last time i checked they don't have compression sensors... knock sensor yes - but there will be limitations to how far the ecu can retard or advance timing.
as far as the stock ecu is concerned, nothing has changed and it will continue doing things as it has been doing things....
I'd certainly want to be controlling the timing etc.
you've built an NA motor, you've got high comp pistons, you've probably spent big dollars elsewhere - why skrimp at the last minute?
Best way to safe guard your investment is to get a piggy back or standalone.
Maxx Mazda: not sure how the stock ecu would be able to compensate - last time i checked they don't have compression sensors... knock sensor yes - but there will be limitations to how far the ecu can retard or advance timing.
as far as the stock ecu is concerned, nothing has changed and it will continue doing things as it has been doing things....
I think the consensis is you don't "have to"RBD402 said:
but you most definantly SHOULD so you can get your timing and fuel right for your new internals....like i said before, you spend a bomb rebuilding the motor, why skimp at the last minute by getting sub par engine management?
emanage is a piggy back not stand alone.
megasquirt is probably going to give you a headache as they are sort of a DIY ECU...
Unichip i have no experience with.
I run a Microtech LT10S with X4 ignition module and bosch individual coil packs on my NA protege - works a treat.....heavilly recommended
WRCprotege
Member
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- 03 Protege5 91 miata
how big was the improvement with the pistions.. i have and MP3 ecu now, but a rod just started knocken in my 2ND motor, so i plan to rebuild the first motor and swap soon.. thinking of getting the j-spec pistions,, 10.4:1 i think..if it only went up 5 hp or so i might skip it, but if thers 10-15hp to be found..MP3 ecu,headers,midpipe,and full exhaust,and underdrive pully are on the car now.. thanks
WRCprotege
Member
- :
- 03 Protege5 91 miata
more info about the piggy back, please
