Tuning: AEM FIC Fuel Map Steps!

A grateful reader has commented on the closed loop tuning post and asked about putting down my tune to help visualise the map better with numbers.

I really don't want to screen shot my tune as it's super tempting to just plug the numbers in and although it would probably work, it will certainly be different to what you need because my setup will be different!

So as a compromise, how about we go through the steps of setting up a base fuel map! That way you can set it up yourself and adjust it according to your setup as well as being able to visualise how the numbers go in the cells!

Let's have a look!

Tuning: Re-tuning with a Temporary MAP Sensor - Part 2

So after rewiring the AEM FIC and adjusted the maps, it's time to test the map.

Tuning: Re-tuning with a Temporary MAP Sensor - Part 1

Alright! Now that the wiring is complete and the signal from the Boost sender was successfully identified, now comes tuning.

Tuning: Fuel Trims!

Following on from Closed Loop Tuning, here's a bit of a spill about fuel trims! Modern factory computers are pretty clever and can automatically adjust the motor's tune in response to an array of environmental variables. There are a number of articles out on the interwebs about fuel trims but I'll have a whack at explaining it!

Let's have a closer look at fuel trims, what affects it and what can you do to help smooth it out on your tune!

Modification: Re-wiring a Temporary MAP Sensor

Well, as the inbuilt MAP sensor in the AEM FIC decided it would go and eat some cookies, I'll need a new reference load to tune the FIC.

Tuning: Closed Loop Tuning with O2 Maps

Oh the bane of piggybacks.... Closed loop tuning using the O2 map. The most finicky of settings! I can't promise to solve all your problems, but hopefully give you some insight and some 'gambatte' with regards to this challenging issue.

Tuning: Piggy Back Tuning Issues, MAF vs. Fuel Map

Last time we talked about setting up the MAF map and adjusting it so that the MAF sensor plays nice with the AEM FIC. The way the AEM FIC works, and how most piggy backs work, is by fudging the signals to and from the factory computer to make the motor run in the way you want it. The reprocussion of this is that you will pretty much never get an accurate tune (when compared with going full standalone) and a good example of this is fuel adjustment via the MAF and Fuel Map.

So let's have a look as this little dilemma.

Tuning: AEM FIC MAF Clamp

Happy New Year everyone! Let's get back into the little problem with the MAF map! Earlier I found out that the original MAF map that I made up wasn't working because of the increased intake diameter. Here's the steps I took to correct it!

Tuning: Charting the Map!

After some teething issues I finally found out why the car wouldn't start! It was because of the increased size of the intake that the MAF sensor was now mounted on.

So before we go and adjust the MAF map, let's have a look at plotting a tuning course by checking out some basic maps!

Project-T: Teething issue...

Wow, Boostworx was busy when I put the little monster in... After about a week or so I got a call that the team had put together the last bits! But a slight teething issue... The car won't start..!

Tuning: AEM FIC Calibration

 
The AEM FIC is installed, software and firmware updated and I've updated the fuel map! Now onto calibration! The FIC will have all the appropriate signals from the factory computer, but it has no reference point. By calibrating the FIC, it provides confidence that at a specific signal level from the sensors provide an expected observed output (to a precise degree).

Tuning: New Injectors, Stock Motor

Now that the injectors are installed and FIC software/firmware updated, it's probably a good time to adjust the fuel map for the new injectors.

Tuning: AEM FIC Firmware and Setup

All the electricals is pretty much done, so now I wanna start setting up the FIC so I can control the new injectors!

Before we can start tuning, it's a good idea to flash (reprogram) the FIC with a fresh copy of the latest or the recommended firmware for your car. Also, look out for the latest tuning software as developers sometimes fixes bugs and update it with new features!