Jpr5690

iTrader: (13)

http://www.racetronix.com/621031.html

HERES A LINK TO A VENDOR.... BUT HOW CAN I TURN THIS INFO INTO A IFR TABLE

01'WS6

Copy this IFR table into your tune and work with this. I'm sure that your fuel pressure varies from idle to WOT but WOT pressure is going to be more important than idle so thats what i went with assuming it is 58 psi at WOT. Hope this helps. Keep us updated!

48.83314694 49.13748993 49.43995947 49.74058975 50.03941391 50.33646413 50.63177161 50.92536669 51.21727881 51.50753658 51.79616782 52.08319956 52.36865812 52.65256906 52.93495731 53.21584708 53.49526201

Jpr5690

iTrader: (13)

Wow, How'd You Get That?

Also Im Assuming I Have Sufficent Wot Pressure With The Racetronix Setup, I Tested It Before The Setup And My Fuel Pressure Was Still Good

01'WS6

Using a excel spreadsheet.

Jpr5690

iTrader: (13)

Ok I Spoke With New Era Performance (the Vendor)

They Said Just Use The Stock Table X 1.68 .. Havent Tried It Yet But Just Wanted To Get Your Take On This Idea

01'WS6

That would get it close but the chart i created was a bit more in depth than just multiplying the stock table by 1.68.

Jpr5690

iTrader: (13)

Ok Ill Use Your #'s

Eagle02

iTrader: (20)

01'WS6-

I just got done installing my Lucas injectors. They were a flow matched set which did 46.4lb/min @ 3bar. I tried using an excel sheet I found @ HPT forums, but I wasn't sure if the #'s I got were dead nuts. So I queried a bit more in the forums there and got EC to answer me, along with some additional info on pulse widths and such.

How critical is it that the IFR table is "correct"? Is there any way u know of to calibrate it, or verify that the #'s there are right?

I'm battling with tuning my MAF using a wideband(which is what brought me to this thread). Now I read here that I need to disable VE's to capture correct data for MAF tuning... is that right? Also, I seem to be unable to find a .cfg file that supports MAF error % using wideband data. I understand I'm probably just blind... but if you might have one handy, I'd really appreciate it.

I'm spraying my car, and the PE tables are proving to be HARD to get right with my MAF error so far off after the 42# Lucas injectors. The car is running leaner than commanded at WOT, (low to mid 13s on the spray, which is bad) so I need to get this fixed!

Any help is greatly appreciated. My apologies to the OP, but I think this all follows the same line of questioning!

Thx
-Eagle

01'WS6

Here is the IFR table that you need to start with.

53.57904985 53.91297074 54.24483612 54.57468348 54.9025492 55.22846856 55.55247583 55.87460427 56.19488619 56.51335298 56.83003516 57.1449624 57.45816355 57.76966669 58.07949915 58.38768751 58.69425767

It's 2:00 in the morning and i just got home so let me get some rest and ill finish up the rest of your questions in the morning.

Jpr5690

iTrader: (13)

Ok Now Im Kind Of Stuck Here ... Were Both Using #42 Lucas Injectors But We Have Different Ifr Tables?

01'WS6

Yours are advertised at 42.29lbs @ 3 bar and his are flow matched to 46.4lbs @ 3 bar. Therefore you will have 2 different tables.

01'WS6

Ok here is a config. to tune your maf. Click on the second file in the attached files in this HPTuners post. WB Config.

When tuning your maf u want to be in open loop (i just turn open loop off with the VCM controls in the scanner) with the VE's disabled. To do this you need to set your engine, airflow, dynamic airflow, High RPM Disable to a value below idle. This disables VE table lookup and will ensure that all readings are coming from the MAF. Then make sure you special paste by % to your maf table from the scanner. Finally make sure you go back and renable your ve lookup after your done and make sure u turn off LTFT and reset your fuel trims before tuning.

Jpr5690

iTrader: (13)

THESE INSTRUCTIONS PERTAIN TO ME TOO RIGHT?


ALSO AFTER UPDATEING MY IFR AND SETTING MY PE TO A FLAT AFR OF 12.2
MY CAR SEEMS TO BE RUNNING A 12.8 TO A 13.5 AFR

IM ASSUMING THAT THIS MEANS MY MAF IS UNDER REPORTING THE AIRFLOW AND ACCORDINGLY WILL LOG THE AFR ERROR % AND APPLY THIS TO MY MAF CALIBRATION

(I HAVENT YET HOOKED UP MY WB TO BE LOGGED OS IM GONNA HAVE TO TACKLE THIS FIRST AND THOSE WB READINGS WERE GOING FROM 4K RPMS UP TO 7K SO IM GUESSING THEY WERE ONLY MAF FUELING

(WHEN I GO TO ACTUALLY LOG MAF ERROR I WILL GO INTO THE PCM AND LOWER THE "DYNAMIC AIRFLOW HIGH RPM DISABLE" TO 3000? AS SO TO PROVIDE SOME OVERLAP BETWEEN MAF AND VE TUNES)

Eagle02

iTrader: (20)

I got the closed loop disable part, but I lost u on setting engine, airflow, dyn. airflow, high RPM stuff...

Sorry my noob is showing...

01'WS6

Yes your maf is off is thats what its reading. U will want to set your RPM disable to 0 so there is not conflict what so ever through out the RPM range. And make sure to reset the fuel trims and disable them as well as disabling closed loop.

Follow those exact steps through the tabs on your HPTuners editor and set the disable to "0". For example find the engine tab at the top of the editor when u first open it, then go to the airflow tab, etc.

Viper

iTrader: (6)

This part has me confused:

" When tuning your maf u want to be in open loop (i just turn open loop off with the VCM controls in the scanner)"

Don't you mean 'closed loop off' in the VCM controls?

01'WS6

Yes exactly! Turn CLOSED loop off! Thanks for catching that!

Jpr5690

iTrader: (13)

Ok Just To Hit On This One More Time...

In The Vcm Editor: Disable Ve Lookup Function By Setting The Dynamic Air High Rpm Threshold To Zero

Then...

Once Your Scanning The Car Load Up The Scanner Controlls (the Little "on \off" Tab)

And Turn The Furl Trims And Closed Loop To The Off Position
Also At This Time Hit The Rest Fuel Trims Button


Log: (commanded Afr Vs Actual Afr) Error Vs Maf Freq
Apply This Error % To The Maf Table In The Editor
Re-enable The Ve Lookup Threshold To 4000rpms
Re Flash The Pcm

Load The Scanner And Reset Fuel Trims (and Check To Make Sure Cloosed Loop And Fuel Trim Learn Are Not Still Off)


I Think I Got It...

Viper

iTrader: (6)

You may have to do this several times:

" Log: (commanded Afr Vs Actual Afr) Error Vs Maf Freq
Apply This Error % To The Maf Table In The Editor
Reflash PCM"

before doing this:

"Re-enable The Ve Lookup Threshold To 4000rpms"

But yeah, you have it!

01'WS6

Perfect! I usually filter my histo to at least 50 hits per cell though.

P.S.-Thanks for coming in and throwing me a bone here Viper!