SAFCII Dyno-Choon!!!, but I dunno how to read it... Options

[SiKBOY]

I finally got my car on a dyno and the guy tuned my SAFCII. He said that it was running really rich and he was suprised at the gains that my car got after the tune
Can someone try and explain what this chart means?

Also a question to anyone who has an SAFC... I was playing around with it after the tune and in the AIRFLOW section under *REV-*, I cant get the *bouncy ball* going. It just stays flat on the bottom of the graph. I dont know if this is normal or the sensor doesnt work. Can anyone shed some light on this? I just want to make sure that everything is running okay and that I`ve wired it up all good.

Cheers

[DG_Performance]

i could tell you how to read it but i can not see the colors of the lines and what they stand for to be able to read it. it looks like you cut them off when you scanned it. The idea is the before lines show a power curve and the after shows a different power curve. the after curve should be smoother and show more power and speed. the lines that start out almost in the same place then go into a diff curve shows the increase you should have got from b4 to after. i did not look very close at your chart but i am pretty sure one is for hp and other is torque.

[FallenHero]

I would tell you, but it's in metric

jon

[GeEkBoY]

you yanks should join the 21st century...

metric is here to stay

one of the sets of lines is your power, the other is your torque. The lower set of lines look to be your power. the upper your torque. since the x axis of the chart is in km/h, You would need to know what gear you are in to figure out the engine rpm (my guess is 2nd gear). It looks like your peak power has increased from about 60 to 80 kw (this is a big gain!!! ). For those of you who are metrically challenged, 1 hp = 745.7 W, so you went from around 80 wheel HP to 107 wheel HP. Hard to believe unless something was screwed up on your car before the tuning.

btw, do you have the 5s-fe or 3S-GE?

[SiKBOY]

Thanks DG and Geekboy, I have a 5SFE engine and the all the pulls were done in 3rd gear. Geekboy, you said that before tuning my max power was 60kw? Is that about the standard power at the wheels for a stock GT? or is it less? I can't think of anything that is screwed up when I was running before the tuning. I guess I want to find out if the car was running less that optimum before tuning so I know that there is nothing wrong with my car.

The car feels a lot better though and responds to the pedal a lot more too. It climbs to 100 considerably quicker.

[GeEkBoY]

with a closer look, it is around 63 kw. Most people on this board say a manual 5sfe pulls around 100-105 whp so around 74-78 kw. That is why I have a feeling the car was out of tune before. My guess would be that after you installed the SAFC, the fuel was too rich as the mech said. It is safer to run the engine rich over lean, so it may come shipped very rich to ensure people don't toast their engine before they get the car tuned, but ironically it would have decreased performace until tuning.

[SiKBOY]

On paper the 5SFE puts out 98KW at Im guessing 74-78 Kw at the wheels ( about a 25%loss through the drivetrain etc).

I dont know of anyone that has done a dynopull on a stock GT. On paper it is 74-78 kw but in the real world it might be different, depending on temp, age of the car etc. So I guess its safe to assume that the car is running fine and there is nothing wrong mechanically.

Thanks Geekboy