Well I am finally going to ditch the stock ecu. I have been trying very hard to get a good tune on the stock ecu with not much luck. I am very familiar with the EMS from my previous car. So this weekend it is on. I will do a pump gas tune, and then switch to an e85 tune. Just want to work on what the evo likes. I will be sure to post my maps on the aempower forum.

Anyone have any good tuning advice for me with the evo on pump gas?

Things I am already going to do. SD, Boost Comp, setup the 2 step, and the NLTS.

Mods
Evo 9 Turbo
LICP
Ghetto Intake
FIC 2150cc injectors(switching to 1100cc fic's next week)
Stock Everything else

A question I do have, how did everyone wire up there AIT sensor? Did you just cut the plug on the maf and use some of the wires from there?

 

yes, the stock iat is in the maf. use the 2 wires to connect the aem iat, the evo basemap is already setup for this. then replace the oem map (mdp) sensor with the aem map sensor wired the same as the stock sensor.its all in the instructions bozman.

did you get a V1 or V2? on my V1 the only big problem i had with the basemap (other than it wasent even close LOL) is the injector advance map. some evo's i believe depending on cam have a flat spot around 2k rpm at light throttle. advance the injectors where it feels flat but leave the -180 at idle as it seems to idle best there. took me a while to figure that one out. the only other thing that ticks me off is the aem controlling the iac motor. you will NEVER get it to act right with the stock iac. it is a stepper type and the aem looses its "home" position.
so, sometimes it will idle perfect. sometimes low, sometimes high. it really gets annoying. i am going to swap to a ford mustang iac (pulsewidth type). i think that will work much better.

 

I personally never had an issue with the IAC on Series 1 EMS on any of the Evo's I tuned.

Series 2 I can't comment totally on yet cause my car has had so many issues in the beginning and little quirks along the way I cannot pin point everything yet but as of recent my idle drifts noticably. In the beginning it appeared to be pretty stable though so I may have yet another bad IAC motor... I am on my 3rd replacement already!

 

TheBoz why are you switching from the 2150cc injectors?

 

i never had a problem with the stock ecu, installed aem v1 and bam, never would get right. might have had a faulty iac the whole time, i doubt it though.

 

I really do not need that much injector. Even on e85 26psi, I was at about 30%dc. So I would just like some more resolution when the injector. With the 1100cc, I should be at about 50-60%dc at 400whp which still gives me plenty of overhead if I want to run a black or hta86. The 2150cc at 35psi and 678whp on E85 were only at like 72%dc. I just ran out of fuel pump on my galant, the 044 could not pump enough . I am also 100% self tuned. I gave up on dyno tuners a long time ago. I found that most are not worth a ****.

http://www.youtube.com/watch?v=t5b43tWnP4w

Also this is a series 1 ems. They are available for such an awesome price used these days, I dont know why more people dont make the switch.

 

So I got the car started last night. I still need to get it to idle right and set the base timing. Outside of that I should be good to start boosting. I was really a super easy process.

#1 hook up map sensor, AEM 5bar just solder it in
#2 hook up AIT sensor, GM AIT just solder it in
#3 hook up WB02 to the ECU just solder it in
#4 configure the sensors, injectors, and change the fuel map a little.

Bam car fired on the first shot. Idle needs a lot of work and a lot of tweaking required to the fuel map. But all in all super pleased with results.

Just ordered my 1100cc's from MAPerformance, they should be here sometime next week. I figured I would toss in some GSC no tick liters while I was at it. So big thanks to the guys at MAP they always get me taken care of.

I will let everyone know how the progress is going. I should have a pretty decent map by the end of the weekend.

 

TheBoz, what are you going to ask for them 2150's? I have a friend that will be looking for a set for his Evo any day now...

 

I already sold them. Just waiting for the payment to clear and then they are in the mail.

 

So I just finished up some generic tuning over the weekend. Nothing special, the car still needs some more timing. However I am not sure how much knock is safe on the stock block. So I am just playing with what the car likes for now. I also have my new injectors showing up this week, So I am not spending to much time. But if anyone is looking for a cal with 2150cc injectors it is up there now.

http://forum.aempower.com/forum/inde...msg142298.html

The idle still hunts around, and I had to add a lot of fuel at idle to keep the car some what stable. So enjoy and feel free to leave comments. After I have the new injectors I will do a little more on CA91 and then it is E85 time.

Also car is only running 20.5psi right now.

 

im for sure switching to the PW IAC.

 

How are you switching? Do you have one that fits factory location or are you running an aftermarket throttle body?

 

i have a boomba 75mm TB. it uses an adapter plate to run the stock iac. but if you remove the adapter its a totally flat flange which is perfect as the ford iac uses a flat flange with a paper gasket. only problem is the bolt pattern is not the same so im going to make a adapter/spacer plate that will bolt to the TB and then mount the ford iac.

Even the AEM instructions say that the stepper type iac is not as good because the ems cannot be sure of the current iac position as it does not have a position sensor. so it uses the "park" feature to try to remember its position. BUT, if i use a PW iac then it should be alot more consistant. 50% duty cycle is exactly that VS where did the iac park? noone knows.... LOL like i said before i have ALWAYS had this issue since the AEM V1 install.

 

WOW, I just put in the 1100cc injectors and I am very impressed. My idle holds solid at 900rpm. They are just fantastic. I have just started to tune on them and so far I am very impressed. They work so well. As soon as I have a full tune on the car I will put up a new map. But overall I am very impressed.

 

I never have a real idle issue either... Maybe u have a bad iacv