aem ems + ?

[twincam187]

hey im doing the 2j swap into my mk3 and i have the aem ems pnp unit...

question is do i need a map sensor or wideband o2 sensor to run with the unit?

thanks jeff

[SirLoki]

the stock map sensor is good to 18 psi on the aem. the wideband will definitely help you tune the aem on the street and on the dyno.

[twincam187]

awesome man thx.

can you recommend a good wideband to run with the aem or are they all pretty much the same

[foreverpsycotic]

ide go with an aem wideband.

[tissimo]

they're all pretty decent.. If you're planning to run race gas a lot, I would look into a wideband that can use the NTK sensor as it last 100x longer with leaded vs the bosch unit most use.

[Boostage]

the stock map sensor is good to 18 psi on the aem. the wideband will definitely help you tune the aem on the street and on the dyno.

Thought stock MAP was good to 14.7psi

[drewgo]

Thought stock MAP was good to 14.7psi
1j -14.7psi (1 bar)
2j -17.64psi (1.2 bar)

[Nopaint]

what about a GM 3bar map? Could he use that?

[tissimo]

with aem, yea.. you can use any map sensor

[twincam187]

rite on guys, i would probably need to upgrade my injectors before i hit the 17 psi on my 2j correct?

[tissimo]

no.. 440s (assume what you have) should be fine on the stock twins @ 17 psi.. You'll be up there in duty (85-90%) but will be enough..

[twincam187]

engine is from japan.

so would it have the 550?

[OneJoeZee]

engine is from japan.

so would it have the 550?
Not unless someone put them there.

[twincam187]

440 it iss haha

[tissimo]

actually, you might need to upgrade..

I remember my duty being ~ 80-82% on my 550s @ 18 psi (usdm twins and cams though) which is 440 (80%).. so your injectors will be maxed. It would be wise to upgrade. I was running a little fat though (11.0-10.8 a/f)

[SirLoki]

awesome man thx.

can you recommend a good wideband to run with the aem or are they all pretty much the same

i am running all the AEM sensors and havent had any problems. the aem wideband is a bosch type sensor.

justin from tuning concepts recommends fjo sensor.... but i just decided to stay with aem so there is no compatibility issues.

[twincam187]

when you say ALL of the aem sensors what does that entail

this is my first standalone build so im slowly learning all of this.

what other sensors does aem offer for use with the ems?

[SirLoki]

when you say ALL of the aem sensors what does that entail

this is my first standalone build so im slowly learning all of this.

what other sensors does aem offer for use with the ems?

3.5 bar map sensor, intake air temp sensor, boost control solenoid and the wideband.

some people dont like the aem boost control solenoid because it will not allow you to change boost "on the fly" rather you would have to make cal adjustments to the map via the laptop.... stick with a separate boost controller if you still wish to adjust boost separately (HKS EVC or Greddy Profec)

[twincam187]

I have the hks evc 7 :)