coop, I highly suggest PFC for your application.

If you were to go single turbo and take a lot of time to learn about EMS (for the first time), I would recommend Haltech.

I've PM'd you the rest of my thoughts since I don't want to deviate from the topic.

J

 

What is the big learning curve? Fuel is fuel, you either need more, or need less, and the AEM tells you where it is, and with wideband input it tells you how much you have. With any system you have to be able to do this. Same thing with timing. The rest of the stuff is all accessory, you don't have to adjust any of it if you don't want to.

Mine will be done in the next week or so, I am still waiting on a few parts. The software seems pretty straight forward to me.

 

What are your mods Damon1? I would love to see your configuration file when you are done.

 

Ok Damon1,

Tell me how to move the staging signal for the fuel injectors. DO you use the bleed method or set-up your own rpm/load trigger point for the secondary injectors? If so, how much delay do you use and percentage if using larger injectors like 1600cc?

For the cold weather that just arrived, how do you adjust the coolant fuel correction for both driving and starting in the morning?

Is somebody tuning it for you right now?

I'm not trying to put you on the spot, but these are some things to take into account with this EMS. It is quite different from Haltech since IMHO the E6K is A LOT more straight forward about it than the AEM.

Here's another question, how do you change the Y axis on the maps, not just parameter window while you datalog?

J

RatedR1,
I took a glance at your config file. It's the same initial one I used. THe off throttle around 1.5krpm is off just like mine. You can smooth out some ignition and fuel in the low rpm low load region. I'm working on mine right now since I re-did the entire map. At the same time, I need to make sure my temperature correction is up to par since I was running very lean last night on the wideband. I can email you a copy of my config file when I get the temperature correction nailed.

J

 

I find the manual a bit incomplete in some of the stuff I've been asking, like staged injection.

However, their support team is pretty good at explaning this stuff.

J

 

btw, there is some good information for gain compensation if you have a FJO wideband controller.

If you have a UEGO wideband controller, it may differ depending on who designed the controller (I think there are several vendors). Once I get more of the driveability stuff ironed out (and finish my new motor w/ fuel rail and O2 bung welded to downpipe), I'll try to figure out the compensation for my UEGO controller.

J

 

I think any system used will require a steep learning curve if you've never used one.
Sometimes I think the learning curve is tougher for those who are used to one particular system and then have the switch to another. It is harder for me to get the methods and especially the terminology strait when switching from one system to another.

If your serious about taking control of you engine management then look at the features and support that is available for your application then get a system and start learning it. No system you purchase will be a "Hook it up and it will tune itself for max power and the best drivability" type deal.

Even if you have someone do the initial tune-up for you, you will need to learn the system and be able to make changes yourself, otherwise you will never get the full potential of the system.

I use the AEM because it is designed, supported and owned by a US company, the support has been very good (Their forum is a big help), the documentation has been a bit minimal, but they are improving it constantly, which for a relatively new company is not bad, but most importantly the amount of features for the dollar spent is hard to beat.

 

Thanks for taking a look at that for me. Yes please e-mail your config file. Spyfish007 (Carson fischer) is helping me out with this thing. He is pretty good at tuning but he is also learning the system. If you do not mind could you e-mail your phone number so we can talk in real time. I am not in a big hurry but I really don't need a $1400 paper weight either! Thanks again for your help.

--Tyler

 

Also, Does anyone know the hours of AEM's tech support? I hear they are great but I can never get through.

 

RatedR1,

I think they operate during normal business hours (8am - 5pm).
Try calling them around the middle of your day and consider the time difference (PST vs. EST). I got a hold of a tech around noon CST.

J

 

Try calling Damon1.
Obviously he's the AEM man since it's all straight forward and intuitive for him.

RatedR1,
Sorry for being slow, but I'm working on it. The change in weather has really showed a weakness in the temperatur compensation map. I would hate to send you a map that would risk damaging your engine.
The map I'm tuning has conservative ignition across the rpm and load range. The fuel needs work as I'm trying to figure out how to define the staging configuration.
It should be enough to start the car. Oh yeah, my starting still takes a few cranks to turn over which I haven't been able to reduce yet. It's much better than the initial map posted on the AEM forum.

btw, are you only seeing idle problems?

 

There doesn't happen to be a simulator for the desktop PC to test what different variables in the AEM software change? I.E. a rx7 simulator where you can pic different mods (cat back, intake, types of turbos...etc) and it simulator can use some sort of general characteristics modification for the car (obviously nothing that would be totally accurate for any car). And then someone could adjust the different characteristis on the AEM software and see how the car responds (idle, accel, boost, temps...etc).
A way to practice tuning without popping an engine...
Just a thought...

 

Oh no. It is definitely not just idle problem. I cannot rev my car at all. I couldn't even drive it down my driveway.

 

I use the Secondary diff map for my 1600cc injectors which has the offset of -60 in secondary option. I set my secondary injectors to come on above 4psi of boost at all rpm points at 50% meaning it will divide the fuel map 50% to primary and the other 50% to the secondary injectors. DONE, That's it.

Cold start, just use the warm up enrichment table since according to the manual it applies fuel everywhere as long at the temperature is at the reading in the table.

Changing the Y axis on the map is easy, click on the site you want to change and change it, or you can go to the load table and change it there.

As for the Haltech, sorry it's a pile, I gave mine away.

 

I just read the provided manual, and what I didn't see, or understand I got from the manual updates section on the AEM forums, or read it elsewhere in the forums.

 

Heheh pile
It's not a pile, but certainly not as capable as the AEM unit.

I still haven't seen anything in the manual and I had to use the forum to figure out the staged injection.

I'm waiting for the next update with more staged stuff in it.

J

 

What specifically are you waiting for, I haven't heard of any changes in the staged injection, and I don't know what they would change, pretty much anything you want to do staged wise appears to be in there and working fine.

 

The Manual update for Staged Injection will be in a new User Guide release.
You mentioned the Manual Update section (which I totally missed) and got some useful info.
JS had also posted the same info in the Mazda section.

I enabled the diff map without changing the Duty MX value. So, I need to change the value and see what works best for my set-up.
Also, I thought 100% was max duty cycle on the fuel map so the diff map didn't seem useful until I noticed you can set the duty cycle above 200% (both primaries and secondaries can flow 100% -- not that I would do it). Now it makes sense.

Car runs much better after modifying the fuel map as well. The deceleration needs to be smoothed out.


J

 

RatedR1,
You may need to play around with the throttle mod map. It helped out when I started with the base map.

What happens at idle? Does it stutter or surge?

J

 

Damon1,

Does your car start fairly quickly (a couple of cranks)?

Mine will start after 10 rotations or so.
I raised the min. cranking to 150rpm and it helped a little.

J

 

I can't remember about the idle if it was surging or stuttering. Actually I think it might have been doing both. I need to play with it some more. I had to swap the stock ECU back in for now.

 

The crank min just tells the EMS when to start the injection and spark process. You probably need more fuel. If you open the throttle a bit does that help or hurt? If it helps, this means you are too rich because you are adding air with the throttle, not fuel. If it hurts, you are too lean. Adjust the crank fuel only for this. Just make sure the car is warmed up.

My car starts in about 2 to 4 revs. The way I did mine, was get the car started, let it warm up, and then shut it off. Make sure there is no warm up fuel, then adjust the crank fuel only until it fires with no throttle input. Let the car cool down, then adjust the warm up only until it starts cold with no throttle input. Worked pretty well for me.

 

Just remember, the throttle mod map applies that correction all of the time. I believe this should be left for last. You might want to double check with the AEM guys though.

 

I've added more fuel and it helped with the amount of cranking. It's a whole lot better when it's warm and that's how I've been adjusting it.

From cold, it takes a lot of revolutions. I don't have the map near me right now, but I believe at 10C and below, the percentage on the enrichment table is about 90%.

Hopefully, I'll get it within a couple cranks by this weekend.

Damon1,
How's your tuning coming along?

J

 

90% sounds incredibly high! I am at like 35%.

The tuning is going quite well, I hope to get on the dyno soon.