850rpm idle with the AC on is knock city for the Miata. Hence why the factory made the car idle around 1200rpm. Hence, incidentally, why i want mine to do the same.

For now i'll just go back to the stock AC-Idle up less code and set it to not come on at idle.

 

your broken *** miata might idle up to 1200RPM, but that's not the norm.

and no, you're not going to knock at 850rpm with the a/c on.


I do agree something is happening that shouldnt with your firmware, and it's worth figuring out what.

Also, your clt temps shouldn't be dancing around so rapidly like that, that suggests a grounding problem. What lag factor is CLT/AIT set to?

 

Ok. So, my car is borked. Sure. whatever you say. So you are telling me a stock 90 running the stock ecu does not go into high idle when the AC is on, but rather stays at 850rpm?

I'd rotfl, but i don't find it that funny.

 

it raises from 850 to around 950. the stock ECU adds exactly 12% duty cycle to the valve when it engages the compressor.


your car still wont knock at 850RPM with the a/c engaged.

 

In the log you've sent Status4 never climbs above zero (0) so as far as I'm concerned you're either not turning the AC on or not using my mod.

Can't help you if you won't help you....

G

 

My car does, hence the high idle for AC. Hell it knocks if i put the hi-beams on. Though now i come to think of it, only with the diypnp.

So. assuming all other things being equal. I guess i have a broken *** tune around idle. Odd though that the v5 version of this mod worked so well for me.

 

I'm in Chicago. It's kinda cold here for AC. The log was of a drive home and was posted to show that my idle PID doesn't generally do crazy ****. I already said i'll provide another log later today.

So far your help has been along the lines of "not my problem buddy" so even if i provide a log showing what exactly is happening i doubt anything meaningful will come from you.

 

Hang on, you just told us before all was good in V5? There is little reason to go to V6 so what's the real story here?

 

hense why I said you have other issues to work out.

 

My 1st post was...
Nothing remotely like "not my problem buddy"

How much help you get is up to you... I can't magically know what is wrong without data.... so best you do move on.

 

There is no "story" and i'm not entirely sure why you keep trying to paint me as a bad guy. You wanted feedback. I gave you feedback, and this is the way you respond.

I went to V6 because of the graceful off feature. I like the idea of that rather than just going out of closed loop and waiting for the PID idle to take over and i have to admit the graceful off part of this code seems to work very well. It's the "on" part that is giving me trouble.

 

Disregard. I'm stupid.

 

#1 I'm not Greg G.

#2 I'm also not the only person in the thread who is trying to help you but your attitude is getting in the way.

#3 My question regarding the story is that most of what you've posted here is vague at best, contradicting, and you are incredibly argumentative.

How about we start this again with a simple request - please post your MSQ and MSL with the firmware v6 and a clear description of the problem so that I (the person who wrote this mod) can appreciate your problem.

If you don't do that, I'll happily ignore your posts.

G

 

How exactly did you think gslender and Greg G were the same? Was it the g? So I made the firmware, then thanked myself for making it?

And please do not attribute fake quotes to me! The second quote, I never said anything to you in that tone! And the first quote where I suggested you make a separate thread for your specific issues...looks like I was right eh?

Edit: oh I get it gslender said that 2nd quote...so how did the quote button put my name there

 

If you're knocking when you increase load at idle you have a problem with those cells. From your video you look a little lean and your timing looks a little high around idle. Get things running right and you shouldn't have knock ANYWHERE on the load/rpm spectrum.

 

D doesn't react to duty dropping. It reacts to RPM dropping or rising.

 

Ok,

Attached are the logs from two short runs. First with the V5 code. The second with the V6 code. The tune is the same as the one posted earlier.

I also took video of the runs, so you can see what is happening.

First, V5.



Next, V6.

 

Agreed, and i'm working on them, one at a time.

Thank you. That is most helpful.

My apologies. To both of you. I wasn't concentrating.

My intention is not to be argumentative. I'm intending to figure out how to get my car to idle correctly under all conditions. I'm frustrated and if that comes across as argumentative i apologize.

That sounds perfect. See my post above.

 

OK. I'm back.

Everyone said my tune sucked.. so based on the comment above from bearda i revisited the idle section. Reduced the timing down to 10 (from 17 (which was what i was advised to set it to somewhere else...) and adjusted the idle bypass screw some more. Now i have a steady(ish) 800rpm idle.

I also adjusted my settings such that now the V6 code works.

Short datalog and the msq file attached. I still see some oscillation when in AC idle which i need to tune out (pointers appreciated) but the code does indeed work. Apologies all round for jumping the gun. I'll take my tuning questions to a different thread.

 

Well done. Glad you sorted that out.

I've got some improvements for v7 that should improve decel dashpotadder which doubles up the AC adder, which your issue was showing. You were actually jumping from pid and into decel routines, which the dashpotadder code plays into, which is why it was jumping up - so whilst that is a bug, you shouldn't really have that problem and where you are heading with a stable 850 idle and 950 with AC is the go.

Cheers,
G