Got a blog about MEGASQUIRT - hope you like.
I think it can help people that are trying to start tuning.
I don't know all about tuning and I believe I have a few mistakes there, so I would love to get some input about it. Thanks ! Mega Miata Go easy on me... |
This is looking great! I've started a Wiki thing myself to chronicle and fill with my tuning adventures, and seeing as how I'm going down the same path as you, I'll keep an eye on this. Thanks for putting in the time/effort to writing this stuff down!
|
Originally Posted by elior77
(Post 1185852)
I think it can help people that are trying to start tuning.
I don't know all about tuning and I believe I have a few mistakes there, so I would love to get some input about it. Thanks ! Mega Miata Go easy on me... |
Not that I'll ever be able to find it when I need it, but it looks good to me as far as explaining the units and what the setting mean.
Props for the effort. |
Bookmarked.
|
Well done Elior!
Bookmarked |
Nice work, subscribing to this fer sher.
|
That blog is very well written and extremely easy to understand. Props and taking the time to create this. I'm sure many will find it useful.
|
Great job!
I need to read this several times before I start tuning. Much easier to understand. Thanks for the hard work. Question, how do you calibbrate the thermistors?
|
Thank you guys for the comments, I will update more info soon. :)
|
High resolution AFR table The AFR table is serving two main purposes: 1. Autotune 2. EGO If we take into consideration that we want EGO to be limited to 100kpa (upper limit) then we only need to decide if we want to use autotune for boost (above 100kpa) or not. I would advice against it, tune boost manually, it is easy and safer. If you will tune boost VE manually then you will have only EGO that is using the AFR table, and EGO is limited to 100kpa, so why not use the whole AFR map upto 100kpa ? That will give you a high resolution AFR table ! HD AFR table ?... |
Can you be more specific ?
|
the AFR table doesn't need to be HD nor should it stop at 100kPa.
|
If you limit EGO to 100kpa why would you want AFR cells above 100kpa ?
You can use them for a higher res AFR table (some tuners do that FYI) |
if you dont limit ego to 100kPa why would you want cells to stop there?
I will agree, if you do, for some odd reason, limit your EGO tables to 100kPa but still happen to hit areas above them, you wouldn't need your AFR table, or any table, to go above those rows. |
I didn't understand sorry.
If you hit cells above 100kpa - naturally because we are talking boosted cars, you need your VE and spark at full scale, AFR can go up EGO limit. Looks good to me... |
All I'm saying is that I use EGO in boost.
|
Originally Posted by Braineack
(Post 1186799)
All I'm saying is that I use EGO in boost.
|
Originally Posted by jjking52
(Post 1186937)
So if you tune manually above 100 kpa you can play it safer by being more consevative but, not using EGO above 100 your leaving power on the table?
|
I think that you wouldn't want EGO (or it is not effective) in boost.
I haven't had problems with AFR in boost that needed correction - sometime getting in and out of boost happen to fast for EGO to even react. The AFR areas where EGO is most needed (as I see it) are idle and cruise. |
Originally Posted by elior77
(Post 1186963)
I think that you wouldn't want EGO (or it is not effective) in boost.
I haven't had problems with AFR in boost that needed correction - sometime getting in and out of boost happen to fast for EGO to even react. The AFR areas where EGO is most needed (as I see it) are idle and cruise. Let me fix the one sentence: I haven't had problems with AFR in boost that needed correction that I have noticed yet - sometime getting in and out of boost happen to fast for EGO to even react, but I will risk my engine by not putting any kind of safeguard on the boosted cells, where it being off can cause the most harm to the motor. |
let me be clear:
But I dont run closed loop at WOT either. There's plenty of cruising situations that you get into a little boost. There's no reason to go into open loop the instant you make boost. |
Thank you for the input - I will change/add EGO in boost.
|
and even then you just need one/two rows for boost.
one for your low boost slightly leaner AFR target and then your target for 11.8:1. all boost above that row would target the same. and also remember MS interpolates between cells. you really dont need THAT much resolution in the AFR table if youre pretty much just targeting 15.0:1 throughout the entire map. a 1x1 table would be sufficient. I'd also like to see people start using "include AFR table" in the fueling algorithm. |
|
your adaptive timing curve should have positive and negative values.
and you should be clear about how the curve works: if the idle strays from your idle target by the amount in the curve, it adjusts the timing to get it back instead of opening/closing the idle valve. so if the idle is ever above your target, you're not using timing to slow it back down. you can tune it by turning on/off headlights and a/c without idle up active. |
Thanks Braineack
Next update I will add that. Can I take it as a compliment that only my EGO and Idle advance need an update ? |
|
All times are GMT -4. The time now is 04:27 AM. |
© 2024 MH Sub I, LLC dba Internet Brands