87.5 and up are high impedence which are not peak and hold.

 

I injestor about a mouthfull at a time

 

Okay, I am aware of this. My statement was a supposition. The point I was trying to make was, that there must be some padding in there (I.E. at stock levels the ECU isnt near 100%).

 

I know it was a supposition, but it was still wrong. There's no point in saying, "what if it was 40%" when we know it isn't from other info available. I'm just trying to dispel all the myths about this, not add more.

 

Well, technically, no myth has been dispelled. There is still no number of what the ECU is running at stock levels.

 

As I said before, on a stock stock engine injector duty cycle peaks about 55-60%.

 

If there's no duty cycle max, then whats the reasoning behind the Rtec7 chip?


Increase primary injector duty cycle cap by ~5%:

Raising the cap allows a little bit more out of the primary injectors. This works in conjunction with the lower Secondary Injection RPM to smooth out air/fuel ratio and get rid of the lean spot.

 

annnd then....?

 

Waitning for NZC to pick up on this one...

 

and THEN!?!?

 

^^^ That wasn't me btw, that was Maynard5000, I was logged in on his computer and forgot to log out

 

I didn't write it so I don't know what the makers of the chip meant. You'll need to ask them.

 

***** Also, what AFM percentages are you seeing at WOT? *******

So? J-RAT. What are the percentage that you see at wide open throttle???

And am I missing something here? Do not one of the folk that have written on this thread not have a meter with the Duty Cycle feature on it??? It seems that way....but that can't be. So what is the max duty cycle that you, whoever you are, are seeing at wide open throttle and what is the max pulse width in ms that your seeing? What I see does not correspond to some of what I see here......therefore my meter must be wrong or I can't read the meter.

 

Here's a 87TurboII, virtual stock car, meter set to DutyCycle, Percent, car in forth gear and not even all the way wound out. Had to hit the Hold Button because the Min/Max will lose it's memory when I let off the throttle and the injectors go to.....zero percent. Done shut down on me.

 

Pretty picture... My AFM percentages only see around 74% Thats percentage of opening as recorded on the SAFC.

NOW, on to the questions for HAILERS. That was a max hold reading, so at some point or another, it hit 80% duty cycle. Was it BEFORE the 3800 transition? AFTER the 3800 Transition? Primary? Secondary?

Lets not loose sight of the fact that the ECU cuts duty cycle after the magical 3800 rpm point.

 

NO. This sucker had passed the 3800 rpm mark long ago and was well on it's way to 90percent. I had the meter originally set on Duty Cycle and had pressed the Min/Max button to capture the MAX Duty Cycle percent, but alas it does not work out that way in real life. I mean the meter was capturing the Min/Max/Avg, but the problem was that when I let off the throttle .....the injectors shut off and the meter went to zero. For some reason I lose the Max/Avg/Min when the injectors go to zero.

So on the next opportunity I just held the meter in my hand and when my eye caught the thing going up towards eighty I hit the HOLD button. That button does not seem to care if the injectors go to zero or the meter leads are taken to put the meter on a scanner.

Again.....long past the crossover where the secondary injectors come online.

Maybe tomorrow I can capture a low nintey percent for you ........at seven grand and above.

 

DAMN! low 90's on the PRIMARIES? Might as well just shove a continuous 12v on the injectors and see what we can get out of the car!LOL

 

Actually, thats good to see, I assume thats an S5 car? I would assume that there will be slight differences in injector duty cycles between the two.

Dont get me wrong, I am not here trying to backup some 60% theory, I want the facts. I want to believe that the ECU is capable of those kinds of numbers. Of course HAILERS is giving me what I want, concrete proof.

 

I don't have a series five. I have three series four.

The good series.

I was going to send a jpg of a graph with the primarys at 3.75volts.....but alas, the site keeps saying my 504 is timed out all the time...so no graph

Maybe tomorrow I'll HOLD the injectors and show the Pulse in MS at about the same throttle.

 

That's not just the primaries. Hailers was over 3800rpm, so all four injectors were pulsing together. It means he's at the absolute safe limit of his injectors...