Theory: MAF Sensor Placement!

One of the major contributors to abnormal and erratic fuel trims, I believe, is Mass Air Flow (MAF) Sensor placement!

So let's have a look at this interesting topic!

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.

Uh-Oh: AEM FIC MAP Sensor Died..

I decided to go for a nice drive to grab some groceries and after returning to the car with my rations it wouldn't start.

Uh-oh.

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.

Uh-Oh: Suddenly Lean!

It was a cold winter morning and surprisingly the car took a bit of time to start. After a few cranking attempts it started the car up and I went on my merry way in search for foods. After hearing the BOV whoosh a few times I started to notice something flashing in my peripheral vision... It was the AFR gauge..

Uh-Oh: Stalling on Deceleration!

 Uh oh! I swapped out the included Zage BOV with a fresh GFB Deceptor Pro BOV! But during deceleration, the little monster sometimes stalls..!

What the heck is happening here?!

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.