Issues ? Only one I can think of is inability to tune for different gears . But I've seen that with all cars using protuner. Could be a PT thing .....

 

Brettus, I was meaning to ask you ... how exactly did you test to find out that your PCM is only using one set of tables for all of the gears? Did you just flatline your AFRs to something stupid rich in one of them and watch your guage?

 

Aah. The lower cell thing might just be an AP/ECUEdit/Harrison thing, then.
I could see how that might be just how a particular package handles the bits.

 

put in some stupid rich numbers low in rpm range for each chart till I found the one that actually did something .

Spent the first month or so floundering around till I realised what was going on ....

 

Did you disconnect your front O2 sensor first?

 

/\ no..... why ?

that is how I figured out which chart worked - from the o2 sensor readout ....

 

Because it is the only reliable way to force open-loop at all RPMs.

 

/\ i went WOT - pretty sure that will force OL at all rpm ......

 

A) No it wont; and
b) You aren't really testing much of the fuel table that way.

 

Cant you just set the Exit close loop RPM and or load to force it?

 

And we both ride equally high egotistical horses ....

We each have acquired some unique knowledge, but we've both posted equally fubar statements over the years. We live, we learn, and more importantly we grow from the experience and knowledge we gain as we go.


.

 

don't really need to test much of the table - just enough to say- yep that did something in that table for all 6 gears but did nothing in any of the other tables .

 

Hey stink, did you take MM's web seminar? Or are you wingin' it?

 

as a matter of fact I did ... and I highly recommend it to anyone

before I sent my cobb out, i did drive around quite extensively just keeping an eye on my afrs ... I am pretty spot on at 13.3 - 13.7 ... so I am not sure how much improvement I will be able to get with fueling ...

I am a bit too wary to touch my ignition timing...... I will have to do a lot more reading/ research before I feel brave enough to go there ... but I wanna do it myself

Sooo... if you guys could offer me guidance, that would be great!

 

Not necessarily ... I've seen times when I was at WOT and still in closed loop for a second or two ... I gotta dig up the datalogs ... was your STFT 0?

 

That won't cut it.
I'm just sayin'...

 

That's what life is all about .... TeamRX8, I gotta admit ... at first I thought you were just 100% dick ... now I think you are only 20% dick, 50% decent/ informative, and like 30% good guy

Could any of you fine gents suggest some good resources I should read on ignition timing/ dwell etc? I need some airplane reading material for my 10 hour trip to the motherland this weekend ... and I have my Engineering University's library at my disposal (Lehigh University, if any of you are curious)

 

It's only that big in my dreams ....

 

lol

 

maybe a second or two - I'm not trying to argue that point because I have not really studied it in enough detail . Thing is the tests I did proved to me that only one map worked and nothing that is done on the other two maps does anything .
Seen the same thing 4-5 times with other PT users - seems to be a fault with the software .

 

Very strange.
I'd like to see that resolved.

 

Not as much as I would . PIA not being able to tune for the different aux. port opening rpms in each gear + 1st and 2nd always end up leaner than I would like.

However - Mark has gone AWOL so not going to see any updates in the forseeable future .

 

So it is time I provide an update .... The car does not appear to be running poorly ... but its pig rich in the upper RPM (see attached file ... 3rd gear WOT pull starting from cell 233). Note: I was stupid and did not include STFT ... so I am going to assume I am in open loop


Now, how do I go about about fixing this ... here are the options that I am looking at
1. I scale the top of my MAF back down ... but I don't think the MAF is wrong because there is not a severe jump in the reading to correspond with the severe jump in AFR....
2. I scale my third injectors since they should be turning on right around there correct?
3. I smooth out my entire higher rpm power curve to say 11.5 afr and scale my MAF and injectors from there ... but this is too time consuming as it will probably take an entire day that I do not have until this weekend
4. Go out and get another WOT pull with STFT included to make sure I am def in open loop.

What do you guys think I should do?

Also as an aside ... I will be turbo by the new year and I am going to do my best to have MAF+ injectors dialed in soon ... is there anything else you guys think I should do to be ready (tunningwise)?

 

[quote=stinksause;3710439]The car is running good ... but its pig rich in the upper RPM{/quote]

These two statements are mutually exclusive.
What you meant to say is that the car doesn't feel like it is running poorly.
But it is.

Bad assumption.


What did we do in the seminar?

You will be starting over completely from scratch, so it doesn't matter. None of your current scaling will still apply.

 

I agree that I would have to rescale the MAF ... but why would I need to rescale my injectors?

Also, my cobb gives me an injector % duty cycle ... does that just apply to the primaries or is it referring to all of the injectors in total that are on at that point in time?

So MM, your opinion would be that I go out and get another log to make sure I am in OL and then scale my P3's since I will be starting from scratch soon enough anyway?