retarded noob here... need help with fuel map - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


MSPNP MSPNP specific Megasquirt related discussion.

Reply
 
 
 
LinkBack Thread Tools
Old 03-17-2011, 06:04 PM   #1
Elite Member
Thread Starter
iTrader: (4)
 
Pen2_the_penguin's Avatar
 
Join Date: Dec 2009
Location: Reno, NV
Posts: 3,690
Total Cats: 97
Default retarded noob here... need help with fuel map

I dont know what exactly im looking at, but I dropped my boost down to 8psi just to be safe.


I recently installed my MSPNP for my 94', but I am ECU retarded to the max!

I read the instructions carefully and got the car running, but my AFRs seem rich at 9.4 @ 8psi, at deceleration I get a full 22.4 AFR and I dont want to waste fuel from being unburned...

Can someone direct me to a good configuration for 11psi w/ 460's?
I also have a AFPR, but I bumped it down to the stock pressure of 35-40psi, if that helps, also my afr target map is almost same as default in his DIYPNP instructions...
Pen2_the_penguin is offline   Reply With Quote
Old 03-17-2011, 06:10 PM   #2
Junior Member
 
Join Date: Jan 2007
Location: EXTREME Southern Illinois
Posts: 281
Total Cats: 0
Default

Quote:
Originally Posted by Pen2_the_penguin View Post
I dont know what exactly im looking at, but I dropped my boost down to 8psi just to be safe.

I read the instructions carefully and got the car running, but my AFRs seem rich at 9.4 @ 8psi, at deceleration I get a full 22.4 AFR and I dont want to waste fuel from being unburned...

Aim for 11.5:1 under full boost, scale it down to ~13.5:1 at 100kpa, then 14.7:1 below that. The 22.4:1 under decel is probably as lean as the sensor will read and the injectors should be on overrun shutdown.

EDIT: Just to be clear, don't make abrupt changes on the map, smooth it out. And for the lower part of the map the goal is to have it 14.7:1 in all the cells you would normally cruise in.
DammitBeavis is offline   Reply With Quote
Old 03-17-2011, 06:36 PM   #3
Elite Member
Thread Starter
iTrader: (4)
 
Pen2_the_penguin's Avatar
 
Join Date: Dec 2009
Location: Reno, NV
Posts: 3,690
Total Cats: 97
Default

Name:  fueltable.jpg
Views: 27
Size:  58.9 KB
Name:  AFRtargets.jpg
Views: 22
Size:  33.6 KB

Are these correct in anyway?
Pen2_the_penguin is offline   Reply With Quote
Old 03-17-2011, 06:47 PM   #4
Elite Member
iTrader: (11)
 
chicksdigmiatas's Avatar
 
Join Date: Apr 2008
Location: Texas, 'Murica
Posts: 2,505
Total Cats: 7
Default

The AFR's look fine, is the Wideband hooked up to the MS? If so get tuner studio and win.
chicksdigmiatas is offline   Reply With Quote
Old 03-17-2011, 07:44 PM   #5
Elite Member
Thread Starter
iTrader: (4)
 
Pen2_the_penguin's Avatar
 
Join Date: Dec 2009
Location: Reno, NV
Posts: 3,690
Total Cats: 97
Default

Just realized under megatune's basic settings, I never changed EGO sensor type from narrowband to wideband... would this cause open loop to be retarded like me?
Pen2_the_penguin is offline   Reply With Quote
Old 03-17-2011, 08:30 PM   #6
Junior Member
 
Join Date: Jan 2007
Location: EXTREME Southern Illinois
Posts: 281
Total Cats: 0
Default

That would cause your readings to be wrong, but shouldn't change reality unless you've been tuning based on the readings.
DammitBeavis is offline   Reply With Quote
Old 03-17-2011, 10:13 PM   #7
Senior Member
iTrader: (5)
 
Join Date: Jan 2008
Location: Central, TX / Bay area, CA
Posts: 1,272
Total Cats: 3
Default

Get TS I think its simpler to use and the auto tune function works quite well.
Gotpsi? is offline   Reply With Quote
Old 03-18-2011, 04:33 AM   #8
Elite Member
Thread Starter
iTrader: (4)
 
Pen2_the_penguin's Avatar
 
Join Date: Dec 2009
Location: Reno, NV
Posts: 3,690
Total Cats: 97
Default

Just a quick question, what should my AFR setting be in the required fuel calculator for 460s and a stock motor? I thought I had it set for 14.7...

I will get TS soon... you can count on that.
Pen2_the_penguin is offline   Reply With Quote
Old 03-22-2011, 09:47 PM   #9
Elite Member
Thread Starter
iTrader: (4)
 
Pen2_the_penguin's Avatar
 
Join Date: Dec 2009
Location: Reno, NV
Posts: 3,690
Total Cats: 97
Default

its still being retarded, im retarded, and I dont know what to do anymore...


Is it possible and not too much trouble for someone to send me a .msq to run?

I think my map is so screwed up right now I have to start over.
Pen2_the_penguin is offline   Reply With Quote
Old 03-22-2011, 09:52 PM   #10
I'm Miserable!
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,869
Total Cats: 3
Default

did you check out diyautotunes startup maps they have for 460cc injectors?
I started with those and they worked good, of course I had to tune them to my setup but overall worked well to get going.
Techsalvager is offline   Reply With Quote
Old 03-23-2011, 01:10 AM   #11
Elite Member
Thread Starter
iTrader: (4)
 
Pen2_the_penguin's Avatar
 
Join Date: Dec 2009
Location: Reno, NV
Posts: 3,690
Total Cats: 97
Default

I was unaware they had start up maps according to injector size... where can I find these?


The only maps I have is the start-up map that came with the MSPNP disk and my last tuned for 5psi before it got stupid.
Pen2_the_penguin is offline   Reply With Quote
Old 03-23-2011, 01:46 AM   #12
I'm Miserable!
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,869
Total Cats: 3
Default

oh sorry didn't realize you were on mspnp which is ms1 iirc, they do have them for diypnp which is ms2.

do you have a log of your current stuff and your msq?
Techsalvager is offline   Reply With Quote
Old 03-23-2011, 03:22 AM   #13
Elite Member
Thread Starter
iTrader: (4)
 
Pen2_the_penguin's Avatar
 
Join Date: Dec 2009
Location: Reno, NV
Posts: 3,690
Total Cats: 97
Default

Here we go, this is what worked for my 5-6psi, but gets stupid around 8+ psi
Attached Files
File Type: msq megasquirt201103222319.msq (35.1 KB, 74 views)
Pen2_the_penguin is offline   Reply With Quote
Old 03-23-2011, 04:11 AM   #14
Junior Member
iTrader: (2)
 
rbluemx6's Avatar
 
Join Date: Apr 2009
Location: San Antonio, TX
Posts: 179
Total Cats: 0
Default

Try a reqfuel of 5.2ms. That's what I have on my diypnp from brain for rx7 460s.
rbluemx6 is offline   Reply With Quote
Old 03-23-2011, 04:27 AM   #15
Elite Member
Thread Starter
iTrader: (4)
 
Pen2_the_penguin's Avatar
 
Join Date: Dec 2009
Location: Reno, NV
Posts: 3,690
Total Cats: 97
Default

Quote:
Originally Posted by rbluemx6 View Post
Try a reqfuel of 5.2ms. That's what I have on my diypnp from brain for rx7 460s.
you didnt use the calculator, just manually did that? Hey im willing to try anything... to an extent.
Pen2_the_penguin is offline   Reply With Quote
Old 03-23-2011, 09:22 AM   #16
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,892
Total Cats: 1,792
Default

the Req_fuel value isn't going to make or break you. It simply rescales the values you enter in the VE table. So you don't go below 0, or above 255.
Braineack is offline   Reply With Quote
Old 03-23-2011, 09:34 AM   #17
I'm Miserable!
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,869
Total Cats: 3
Default

hmmm use 6.2ms instead of 6.7ms to scale it down a tad and datalog next time to show us log of whats happening
Techsalvager is offline   Reply With Quote
Old 03-23-2011, 11:42 AM   #18
I'm Miserable!
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,869
Total Cats: 3
Default

just noticed overboost protection is set at 152kpa which is around 7.25psi
Techsalvager is offline   Reply With Quote
Old 03-23-2011, 05:28 PM   #19
Elite Member
Thread Starter
iTrader: (4)
 
Pen2_the_penguin's Avatar
 
Join Date: Dec 2009
Location: Reno, NV
Posts: 3,690
Total Cats: 97
Default

Quote:
Originally Posted by Techsalvager View Post
just noticed overboost protection is set at 152kpa which is around 7.25psi
oh snap! i hope thats the issue


Because thats seems to be whats happening, it super retards and goes uber rich when I hit around 7-8psi... we will see.

As for fuel, I only know a small amount of what im doing, but I am learning...
hell I grew up around muscle cars, without computers... thus why I got a mspnp in the first place and taking auto tech classes


Also, how do I make a log?


Also a question about the internal map sensor, I came a crossed a warning in megatune that the sensor needs to be calibrated or something.... or the Kpa could be off. How do I calibrate it or do I need to calibrate it, at idle it reads around 30 or so kpa.

So it seems my fuel tables are alright from what I understand, so if this boost protection is my problem, after that its autotune and tuner studio?


If I had a better understanding I could take advantage of my MTX wideband software to make fuel maps too... but that **** confuses me as well.
Pen2_the_penguin is offline   Reply With Quote
Old 03-23-2011, 09:32 PM   #20
I'm Miserable!
 
Join Date: Jun 2009
Location: albany, ga
Posts: 1,869
Total Cats: 3
Default

stop using megatune
Download tunerstudio instead and use it

http://www.efianalytics.com/TunerStudio/

Once TS is installed, let it autodetect the ECU by creating a new project if it doesn't show you a dialog box before hand.
Also make sure you select proper wideband if the wideband is hooked into the MSPNP and proper map sensor

After so go up to datalogging and click that, click start logging, click stop logging when you want to stop that logging session or done driving the car.

Make sure one log is done without tuning durning the log session, perferable a before and after log.
Techsalvager is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 Yesterday 09:00 PM
Someone help me with AE ihiryu MEGAsquirt 33 10-08-2015 05:56 PM
Walbro 255lph Fuel Pump $50 lsc224 Miata parts for sale/trade 2 10-01-2015 10:17 AM
"Chimney Ethanol" E100 MiataGarage Engine Performance 5 09-30-2015 12:04 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 05:30 AM.