ITRCA

I just bought a ITR and it has one in it. The previous owner had it basically glued to the dash. I am making a piece to go under the Ash tray. It is almost finished then I will post some pics.
Did anyone else do anything creative with theirs? I would be interested to see it.

I have mine mounted where my ashtray was.... I will take some pics.

Here are some pics:

I had mine (when I was running it) on the dash board too...but I did something with it that I never seen done. I ran the wire throw the A/C vent so there was no wires hangging all down and in the way. VERY clean looking and I wouldnt have it any other way. I'll try and dig up some old ass pictures for u

AFCs don't belogn on ITRs

neo_ wrote:AFCs don't belogn on ITRs

who was talking about an AFC?

Erik95LS wrote:

neo_ wrote:AFCs don't belogn on ITRs

who was talking about an AFC?

This thread.

neo_ wrote:

Erik95LS wrote:

neo_ wrote:AFCs don't belogn on ITRs

who was talking about an AFC?

This thread.

thought you were refering specifically to the AFC as opposed to the VAFC

Erik95LS wrote:

neo_ wrote:

Erik95LS wrote:

neo_ wrote:AFCs don't belogn on ITRs

who was talking about an AFC?

This thread.

thought you were refering specifically to the AFC as opposed to the VAFC

I used it as a general term.

why not? You can't leave us hanging like that. Some people believe turbos don't belong on ITRs either.

soulassassin13 wrote:why not? You can't leave us hanging like that. Some people believe turbos don't belong on ITRs either.

Piggy Back controllers, a VAFC being one allow stock ECUs to do things that they normally can't do, like run larger injectors or deal with boost. Remember that piggyback controllers work by altering sensor signals before they get to the ECU.

Most of the time, the primary signal being messed with is the Map Sensor. This is critically important in a Speed Density car. The Map Sensor is used by the ECU to guess how much air is going into the car, and therefore how much fuel to supply in order to match airflow. When you "lean" out a car with an AFC, you are simply decreasing the Map Sensor signal - the ECU responds to the decrease in manifold pressure by supplying less fuel. When you "richen" a car with an AFC, you are simply increasing the Map Sensor signal - the ECU responds to the increase in manifold pressure by supplying more fuel.

The change in fueling happens for a reason: if you look at a fuel table, Map Sensor values correspond with columns. When you increase or decrease the signal from the Map Sensor, you are simply making the ECU use a different column than it originally would have used. (see Understanding Maps if you need some help understanding reading Fuel and Ign tables)

But wait, isn't the Map Sensor used for determining ignition requirements too? When you "lean" out a car with a Piggy Back, you also in all likelyhood advanced timing. When you "richen" a car with a Piggy Back, you also in all likelyhood retarded timing. Look at trends horizontally (as MAP changes) in an ignition table, and you will see why this happens. This helps explain why so many boosted cars running on the "AFC hack" have issues due to excessive ignition advance.

The bottom line: Piggy Back Controllers suck because you cannot independently adjust fuel and ignition. Any changes to fueling will produce a change in ignition too, and often this is undesirable.

soulassassin13 wrote:why not? You can't leave us hanging like that. Some people believe turbos don't belong on ITRs either.

and those people are right in my book