nhromyak

How does fueling continue after there has been a DELTA MAP and a DELTA TPS in the 7730?

For instance, I hit the gas, (40% TPS) DELTA TPS adds a multiplier to AE. GREAT THROTTLE RESPONSE.
To continue this (for a little while anyway) is the DELTA MAP AE, and as MAP changes, I continue to get fueling but NOW

there is not much DELTA MAP (if anything it goes from 80 to 70 kpa), and my TPS stays at 40% while I continue to climb RPMs, what (where) should be changed in the 7730 to continue fueling as the RPMs are still climbing in AE?

Thanks.

funstick

there isd a decay table. this will change the duration of the AE event. after youve run out of AE event timming then make sure the PE mode enables picup in time.

nhromyak

I saw the decay table, I keep thinking there is another MAP table , or something, that I am missing.

The decay table seems correct for most of my driving, it's just that "a little more aggressive" than full throttle driving that I want to go after. I keep thinking it's in my Timing.

MikeH

iTrader: (10)

Are you running openloop? Maybe you need more fuel in the mid/upper rpms, in the ve tables? For me its been a back and forth thing between the ve tables, AE, and pe enables. You can get more fuel in the ve tables, so all the extra ae isnt needed.

Like Funstick mentioned when the AE runs out thats probably a good time for pe to kick in. Maybe try lowering the enable if its to high.

nhromyak

I am running closed loop.

More than likely it is LEAN, but if the computer is COMMANDING 14.71, my VE tables shouldn't really do much... right?

Because the BLMs would simply change to compensate for the 14.71 AFR (Commanding) at these RPMs and AE - CORRECT?

That was the answer, or how I understood the reply that I got just two weeks here: https://www.thirdgen.org/techbb2/sho...hreadid=271824

the thirteenth and my 14th post.

It's so confusing.

MikeH

iTrader: (10)

MY car did the same thing in closed loop. For me the less the computer can screw with the tuneup the better.

Why not do an openloop chip? And set the afr to what the motor likes. Not what the cat likes!

HaulnA$$

This is why others are suggesting you change your PE entry threshold. When you enter PE, the ECM is no longer commanding 14.7 to 1 AFR rather it is commanding an AFR from the PE AFR modifiers. HTH

nhromyak

OpenLoop seemed more problematic for me. I blackened my oil doing this. I had good power, but drivability was still just as bad. I still think it is in my timing tables.

Additionally, I have no way of knowing what the AFR is, because according to that thread URL above, the computer is only COMMANDING that AFR, that's not what the computer THINKS the AFR is by the O2. Even though that seemed to be better.

Actually, I have tried setting the AFR to 14.0 in closed loop, this too seemed problematic. IIRC Grumpy, RBob or Traxion, I forget who, said this won't make the AFR 14.0 though, because the O2 will still only be able to go back to 14.7 along with the computer.

Haulin -
Yes, I will bring down my PE (probably down to 50%), it is at 70% right now.

Thank you!

MikeH

iTrader: (10)

I thought oil turned dark from normal wear?

If you had good power and bad drivability in openloop. You might have to much fuel in the lower rpms from 20-80 kpa.

Set it for openloop if adding fuel helps then you know its lean. If not its rich lean it out. Dont get to caught up in the numbers just what makes the car pull. Start with a small rpm kpa band. Your probaly gonna be lean on topend. The sweet spots will start to stand out. Look at the ve table graph and keep that curve going with the higher and lower kpa. and just keep smothing it out. should get you pretty close.

If your running 70% pe then i would lower it. Thats pretty high.

nhromyak

Not in my 140K mile daily driver... with over 3500 miles on the oil (conventional oil even, not synthetic).

But it did turn black in my rebuilt BBC with Sealed power Rings when I ran open loop for just 200 miles. When I ran closed loop, oil looked good for the first 1000 miles. It could have opened up, but the oil has actually looked better now that it is, or since it has, been running closed loop.

So something is STILL wrong.. I just can't figure it out.

MikeH

iTrader: (10)

uh...Ive ran Moblie one and dyno in my truck. Starting at 300 miles, when the truck was new.. and both turned black. After long periods between oil changes.

nhromyak

I don't know... *shrug*

How does the oil turn black???

Too hot? Or somehow, the combustion enters into the oil (bad rings, bad valve stem seals, blow-by) could be my limited knowledged answer.

Grumpy

While kind of an extreme since I can get into boost, rather easy, I have mine at 33%. I forget the exact number on the truck but it's just higher then what a high speed cruise with a fully weight trailer. 45% rings a bell, thou.

nhromyak

OOG, now it pings when I hit PE (50%).

I already took some timing out of the MAIN spark.

Perhaps I will take timing out of the PE spark adders (table - I am pretty sure I saw it somewhere).
It doesn't really seem to matter whether it's in PE or not, the power from AE and PE doesn't seem to change. Or is this the idea?

When I did take out timing from the main spark, NOW I spin the tires at very low RPMs (of course it's wet here). The torque and smoother accerlation is back. My VEs are still all over the place, mostly in the 118s at anything above idle. At idle it's at 128.

More VE work.

Of course, I fubar'd my ALDL cable again... I pulled on it when it was attached to the laptop.

vernw

iTrader: (2)

This is proof that the upper VE tables are TOO LEAN!

nhromyak

That's interesting that you say that, I have been pulling VE all over the place because my BLMs have been down to 114 at the upper rpms. Although I am not sure at what KPA, pretty much all of the upper RPMs have BLMs in the 114 - 120 area. Hence, I have been pulling VE out.

At least for now, I have moved my PE back to 70% at the lower RPM ranges. I still have 50% at the upper rpms (3200 and 220 IIRC).

Everything just feels better (more power) with the PE at 70% though.

With the lower spark, it is MUCH smoother. I seem to be in the pedal less during AE. I am not sure if this less pedal is true though, as my ALDL cable, and/or laptop is not doing so well. It may be the Moates old software, or my software on my laptop in general. The engine is TORQUEY now, but it doesn't seem tosping up as fast (loss horsepower).


More logging and fine tuning my VEs, upper spark on my RPMs (I seem to lose power now at 3800). And figure out PE.