The title basically says it all. 2012 mazdaspeed 3 very well maintained with no maintenance or repair issues. Fully stock for now.
Started with the 91us octane base map and it was great having the car function like it was supposed to from the factory, so I tried adding crackles and pops briefly, but decided that I wanted to stick with purely performance related changes AND that I didn't want to make an addition like that without taking the time to record some logs first and ensure that everything is running within spec and that I'm not at risk of hurting anything.
So then I flashed the 93 us octane base map and figured might as well do the high load as I liked the regular base map quite a lot and I am actually fairly easy on the car most of the time anyways.
Flashed the 93 us octane base high load map and really loved how it transformed the car. It just runs so much better than factory, and now it's got a really decent boost in torque and power, and it also delivers that power so much smoother and has no interruption of that power if the wheels are not going straight ahead.
I did include smooth shifting with each map I flashed also by the way, though I'm not exactly sure on what this accomplishes nor do I know the general methodology used to do it (info would be cool about this option).
Then I wanted to see what the crackles and pops sound like, how prevalent they are, and just generally see if I liked them in any way. Being that this car is kind of my own little mid life crisis vehicle lol (I'm not rich, cut me a break!), I wanted to drive it for a day or two and get a feel for if it's something I wanted, and I also wanted to see how embarrassed my teenage daughter gets when I drive her and her friends places LMAO
But I ran into a very obvious and annoying issue. Both times I tried adding in the crackles and pops option, the car became very jumpy and jerky at very low accelerator pedal inputs. Basically it became impossible to keep the car at steady state speed while driving on a long straight flat, or even within a parking lot. It felt like, as soon as the pedal input dropped to 9% or below, even from 10%, the car was somehow experiencing a sharp reduction in power, I but as soon as the pedal went back up to 10% or above the car began to accelerate noticeably.
When I really really took my time and really focused on precision control of the pedal, I could sometimes reduce the effect slightly, but it was very very hard to do that and didn't seem perfectly repeatable; just as often as the problem seemed to become reduced, it presented with the results I had started to expect with this map.
Any ideas on what could be causing this, and how I could fix it? I'm really looking to learn as much as I can, so any technical explanation or even hypothesis would be great.
P.s. I did have logging running, though I'm not sure if I had PIDs that would actually be needed to troubleshoot the issue. I would be more than happy to flash either map back and take some logs as well as take logs from the current 93us octane high load NO crackles and pops map, if needed. Just let me know the variables to monitor and any other log settings that should be modified
Thanks all! I really really appreciate any help or guidance anyone can offer!!
Very poor pedal modulation with 93 base high load with crackles, good without crackles
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Re: Very poor pedal modulation with 93 base high load with crackles, good without crackles
Need a copy of the tune and possibly a log to look at.. It might be as simple as cutting out a few cells where you've got the timing reduced for the crackle..
Re: Very poor pedal modulation with 93 base high load with crackles, good without crackles
What you feel at low speeds/loads is most likely the fact that with the pops&crackles tunes the fuel is not cut and as an effect the car is sometimes weird to maneuver because it constantly wants to go and not stop.
I have my own implementation of pops&cracks which doesn't do that, I posted a few tunes here on the forum.
I have my own implementation of pops&cracks which doesn't do that, I posted a few tunes here on the forum.
2008 Cosmic Blue Mazda 3MPS
Built engine + WMI + GTX3071 gen2, ~550BHP @35PSI
2008 Icy Blue Mazda CX7
Built engine and stock exhaust (YES!!), JBR3" + GTX2867 gen2 + Autotech HPFP, self-tuned to 360-ish BHP
Built engine + WMI + GTX3071 gen2, ~550BHP @35PSI
2008 Icy Blue Mazda CX7
Built engine and stock exhaust (YES!!), JBR3" + GTX2867 gen2 + Autotech HPFP, self-tuned to 360-ish BHP