Figuring out where to take my first boost map
#1
Figuring out where to take my first boost map
Hey guys,
I just got my turbo together a little while ago and I have a really shitty low boost map written up after bit of reading on here just to keep my daily driver going. It's just some basic alterations to my N/A map, and I know it has a lot of issues (running rich in boost, barely starting etc). Anyway, I'm reaching out to try and get some help with making this tune usable and reliable. I need help figuring out my AFRs in particular right now!
I'm still a big n00b and trying to learn while balancing school and work so any recommendations are appreciated.
Car specs: 2000 BP4W with full Flyin Miata voodoo 2, Gt2560R (on 6psi right now), FM stage 2 clutch, deatschwerk 770cc injectors, MSPNP2.
I just got my turbo together a little while ago and I have a really shitty low boost map written up after bit of reading on here just to keep my daily driver going. It's just some basic alterations to my N/A map, and I know it has a lot of issues (running rich in boost, barely starting etc). Anyway, I'm reaching out to try and get some help with making this tune usable and reliable. I need help figuring out my AFRs in particular right now!
I'm still a big n00b and trying to learn while balancing school and work so any recommendations are appreciated.
Car specs: 2000 BP4W with full Flyin Miata voodoo 2, Gt2560R (on 6psi right now), FM stage 2 clutch, deatschwerk 770cc injectors, MSPNP2.
Last edited by DairyPerry; 09-28-2020 at 12:48 AM.
#2
Change your AFR Target table from 10.7-10.2 in boost to something around 11, you are gonna wash your cylinder walls at 155kpa with those numbers.
Would also recommend changing your injector deadtime if they haven't been changed per your injector model.
Your overboost is at 140KPA so it will kick in at 5.8 PSI, change it to 180 or something.
Your rev limit is at 5000.
Consider running semi sequential fuel injection as well, unsure what is required for that on an MS2, may be a simple settings flip on an NB1.
Also, you running a 2.0L engine?
Would also recommend changing your injector deadtime if they haven't been changed per your injector model.
Your overboost is at 140KPA so it will kick in at 5.8 PSI, change it to 180 or something.
Your rev limit is at 5000.
Consider running semi sequential fuel injection as well, unsure what is required for that on an MS2, may be a simple settings flip on an NB1.
Also, you running a 2.0L engine?
Last edited by HowPrayGame; 09-28-2020 at 12:00 AM.
#3
Great call on the displacement - I remember setting my req fuel so I'm not sure when I changed that hmm
Also, I'm an idiot with shitty file management and I uploaded an outdated tune, so I was a bit confused why you were seeing my values in boost as so rich. I edited my original post with my current (and renamed for better clarity) tune, also attached.
Also, I'm an idiot with shitty file management and I uploaded an outdated tune, so I was a bit confused why you were seeing my values in boost as so rich. I edited my original post with my current (and renamed for better clarity) tune, also attached.
Last edited by DairyPerry; 09-28-2020 at 12:24 AM.
#4
Fixed up your AFR Target Table a bit to be more aesthetically pleasing in boost, had some weird values in there. Sufficiently rich though.
You should be safe to up the rev limiter from 6k to 7k at least. Definitely look into semi sequential injection, its a vast improvement from untimed injection, will help your idle quality immensely and fuel economy.
You should be safe to up the rev limiter from 6k to 7k at least. Definitely look into semi sequential injection, its a vast improvement from untimed injection, will help your idle quality immensely and fuel economy.
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