AEM Ultimate Resource Thread>>>>

[mehlosTT]

Originally Posted by sugarbear7979

i just got my aem ems installed today as well and installed the ait, map, oil pressure, and wide band uego into it. Only thing i havnt done is figure out where i want to put the power wire on the wideband. Anyone have any ideas as to why aem doesnt want you to put the ground to the chassis, and only to the battery????

Note: i also just grounded all the sensors (map, oil, and ait) to pin 72 i believe, which according to aem's pinout is sensor ground, and its an output. I checked resistance through this pin and its actually the same black wire that runs to the maf harness. 111 for oil, and 53 i think, cant remember, for map (91-93 model car)

-Im about to try and load a map on tonight to see what happens...anything i should know about it before hand, im using 780cc pte injectors...anyone have some rough sketch maps would be awesome. Also running single t66 turbo

Dave,
Take my workmap's Fuel Map and minus the whole Fuel map by 5% and change the Micro Sec/Bit value to what my workmap has. I think it is at 30.
If everything is well grounded, at Key On ( car not running) the MAP should show about -0.02 or so for Load. AFRs should show a reading of near 20 AFR. TPS should read as zero if calibrated correctly with the TPS Wizard. If the Wizard says TPS at off is a voltage of say .62,then change it to a bit higher , say .66 to even .70 volts so it equates as zero TPS . Can explain why that works later.

[kmartens]

Anyone have an answer to my question on post #1112? I could really use the help.

[Kaddo]

What are people running for timing on pump gas while tuning AF? I was thinking PEEK 15*?

[mjannusch]

Originally Posted by Kaddo

What are people running for timing on pump gas while tuning AF? I was thinking PEEK 15*?

Depends on load and rpm. Very low load, in the 40's. Around 20 psi maybe low teens until you get the A/F dialed in and then increase until you see knock and then back it down a degree or two.

[Kaddo]

Yeh my low load areas are ~35*, timing ill keep to low teens while tuning AF.

[mehlosTT]

Originally Posted by mh3kgt

this may be a little off topic, but i searched around a little bit and wasn't able to come up with a definate answer to this myself. So my question is...i have some idle surge in my 92 vr4 and i've already replaced the iac, ecu caps and still have the idle surge. On a cold start my car jumps up to 3k and holds then slowly drops, after putting it in gear the rpm's are fine, but after putting the clutch in to shift/into neutral my idle surges usually between 2-2.5k. Ok, so my question is that if i get the AEM EMS, will the idle control be able to fix my idle and make it steady, or will the surge still exist? I may have some vac leaks as i hear a hissing from near the intake mani. Gonna check that out tomorrow. I just wanted to know ahead of time so i can get all mechanical issues fixed before purchasing the EMS and it not solving my problem. Thanks in advance for any info.

The AEM ems system at over $2000 with all needed sensors is not the answer here...just correct the vacuum leaks and then see if it fixed the surge. The fact that she idles up when cold probably rules out any FAIV issues within the Throttle body. Moning cold starts should be about a 1600-2000 or so RPM idle till she is warmed up; i.e.coolant has reached near normal temps.
You might want to move your post to a new topic area, so not to highjack the original.

[krazi]

hey guys can i get a map from some one. i need a good map want to compare it to my current map i believe mine is off. email it to
mitsu3000gt_vr4_tt@yahoo.com i appreciate it, any thing else you need to know just pm me.
thanks
ryan
mods
big 16g's
fmic
pte 680 inj
93 oct
aem speed density
5 bar map
40 base pressure on rising regulator

[markoverclock]

might have a good map for ya. i joined the aem team too now. so give me a call i should have them by next week.

Originally Posted by krazi

hey guys can i get a map from some one. i need a good map want to compare it to my current map i believe mine is off. email it to
mitsu3000gt_vr4_tt@yahoo.com i appreciate it, any thing else you need to know just pm me.
thanks
ryan
mods
big 16g's
fmic
pte 680 inj
93 oct
aem speed density
5 bar map
40 base pressure on rising regulator

[Buckeye Stealth]

OK, so I bought this VR4 and it has AEM EMS and all the supporting engine mods to make it worthwhile. Since everything is in place, I have but no choice than to learn the system and how it works. The car has an AEM UEGO wideband o2 sensor, EGT sensor, AEM 3.5 bar map sensor and I'm not sure of the IAT sensor, what does it look like and where would it be located? I have A FMIC with one large hard pipe to the throttle body w/ a TiAL BOV on it and there is one sensor in a bung about 9" ahead of the TB.

• First, what is the best recommended reading to get up to speed, or at least headed in the right direction?
• Is it possible for an AEM EMS newbie to do a decent tune without detrimental results? (keeping in mind that a balls to the wall tune is NOT the objective)
• What is a good laptop to recommend for a dedicated tuner PC? ie speed, memory, etc
• Would it be better to take it to a place like IPS for a full tune rather than try myself and then just learn and maintain what IPS installs?
• Thanks to the learned for the guidance and help

**NOTE: The car currently has a tune that as far as I know is a base level tune. It has not been run at over 7 psi of boost since the engine rebuild, I was peretty much told to leave the boost controller turned down where it is untill tuned differently. (Boost controller is GReddy Profec B-Spec II)

John

[markoverclock]

Originally Posted by Buckeye Stealth

OK, so I bought this VR4 and it has AEM EMS and all the supporting engine mods to make it worthwhile. Since everything is in place, I have but no choice than to learn the system and how it works. The car has an AEM UEGO wideband o2 sensor, EGT sensor, AEM 3.5 bar map sensor and I'm not sure of the IAT sensor, what does it look like and where would it be located? I have A FMIC with one large hard pipe to the throttle body w/ a TiAL BOV on it and there is one sensor in a bung about 9" ahead of the TB.

• First, what is the best recommended reading to get up to speed, or at least headed in the right direction?
• Is it possible for an AEM EMS newbie to do a decent tune without detrimental results? (keeping in mind that a balls to the wall tune is NOT the objective)
• What is a good laptop to recommend for a dedicated tuner PC? ie speed, memory, etc
• Would it be better to take it to a place like IPS for a full tune rather than try myself and then just learn and maintain what IPS installs?
• Thanks to the learned for the guidance and help

**NOTE: The car currently has a tune that as far as I know is a base level tune. It has not been run at over 7 psi of boost since the engine rebuild, I was peretty much told to leave the boost controller turned down where it is untill tuned differently. (Boost controller is GReddy Profec B-Spec II)

John

its ok when you know what does what. does the car drive ok? you can do the base fuel map yourself and then take it to a tuner shop to dyno-tune it. but yes new motor you dont want to go over stock boost right now.