rx74evers

iTrader: (6)

ok guys here is my current map that I have been street tuning and have taking to the track. I just tune for safety for now cause I havent had a chance to dyno for power yet. And my mods are Stock Engine, Stock twins, Greddy intakes, Greddy SMIC, full downpipe, gutted cat, and Apex GT cat back. I have been using spreed sheets to smooth out the base map but not sure how the Fuel Injection Correction map should be. Also I have not yet tinkle with the Inj VS AirTemp yet. Should I be? Well overall I just wanna throw this out to see what you guys think... Oh also I currently use the LC1 to tune and log AFR with Datalogit. I have matched AFR voltages to the datalogit so when I compare it with the LC1 software they are identical readings. I log both LC1 and Datalogit logs to make sure there are very little errors.

cewrx7r1

iTrader: (2)

First run a RE-Calc exept for the idle/cruise area (below N10 and below P8).
Fuel adjustmets for higher boost at higher rpms are maxed out if you do not do the re-calc.

Clean up timing split.

Lower your Fan vs Water Temps to 86.

Turn off Ign vs Water T Cool.

Set Sec Transistion ms to .100.

To really learn, contact ARGHX about the private tuning notes and group.

rx74evers

iTrader: (6)

If I run a recal with the current inj map it adds those values onto the base and runs the car really rich. I had the impression that the injection map are correction values and use them as a target alternative. How bad is my ignition split? Please I welcome any suggestions.

cewrx7r1

iTrader: (2)

The PFC always takes the "injection map correction values" and applies them to the base map when the car runs.
Except for the idle/cruise area where it can go in and out of closed loop operation depending on the change value in relation to base value, O2 FB Value, and if the O2 FB switch is on or off.

Split should be consistant in small areas but change over large areas.
See special tune split example below. See how it flows and area are consistant and do not jump around up and down within a small area. Now go look at yours.

You need to understand the basics, that is why you should PM arghx.

tom94RX-7

iTrader: (5)

Recalc only changes the numbers you see, it doesn't change the tune. The pfc goes off base x inj correction which doesn't change after doing a recalc.

arghx

iTrader: (3)

This part isn't always true. When you select the Recalc option the FC Edit software will perform some kind of smoothing process that actually does change the underlying Base x INJ values. Using the compare function I found that if you take the default Apex'i map found on all but the earliest production units (BaseMod map as we call it) and use recalc function, it will change the Base x INJ slightly in many cells:



The changes are widespread but basically negligible in this case. I have noticed on heavily modified single turbo type of maps it can really throw things off though. If you recalc a map, then start making a bunch of changes in the INJ map, then try to recalc again your tune could be messed up.

I have devised a workaround to prevent this and done a full writeup for the tuning group. It's basically some careful multi-step copy-and-paste stuff. The technique can also be used to allow use of O2 feedback on engines without a cat and airpump.

tom94RX-7

iTrader: (5)

Ya I noticed this too, but since they are off by only .00x which I assumed was because of the math because you are multiplying a inj. correct number of 1.xxx (3 decimal places) for example times a base map number of 25.xx for example(with 2 decimal places), then the final number will be off by .00x , if you know what I'm trying to say just because of the math. I didn't think that would make a real noticeable difference in the tune or the AFRs. It takes alot more than .01 of a change in a cell the base map to make a difference in the tune, in my experience tuning my car.

arghx

iTrader: (3)

And you are right. Some times it is just a matter of .03 or .04 or some other negligible change that you could chalk up to arithmetic or rounding type of issues. But sometimes clicking the "recalc" option really screws up your map. It just depends on the situation. Single turbo maps tend to run into it more. Since you are on stock turbos it doesn't surprise me that it hasn't been a problem for you so far.

tom94RX-7

iTrader: (5)

I see. Well I am about to pull the plug on the stock turbos and buy a T04R kit