2.0TFSI MAP NAMES AND CALCULATE PRESSURE HELP

**kuba94** · 7th April, 2020, 08:08 PM

VW GOLF 5 GTI 2.0TFSI
Please help me understand the maps. I am not asking for chip tuning but for help in understanding because I want to do it in my car

1: want to know how to calculate boost presure in bar or psi from what is on the map. What is the boost presure in the map and how did you calculate it
2. there are two boost presure maps what is the difference between them?
3. there are two fuel maps limiter of lambda a and limiter of lambda b. What is the difference between these 2 maps? I know that the smaller the lambda ratio, the more
fuel but can it also be somehow converted or does it feel good? what is the difference between them?
4. What is the requested engine load map for? what is i optional engine torque?

I put all maps with names to preview and to help calculate boost presure.
THANK YOU VERY MUCH FOR THIS HELP
turbo pressure 1.JPG pressure 2.JPG lambda a.JPG lambda b.JPG

**aem** · 7th April, 2020, 08:19 PM

if u want to remap petrol with ecm.....forget it

**kuba94** · 7th April, 2020, 08:31 PM

ECM uses as help. If you can help me with my questions, then do it, if not, studded posts without sense

**aem** · 7th April, 2020, 08:46 PM

I allready help you with what i say...but if u are idiot and dont understand try sing on other table.

**kuba94** · 7th April, 2020, 08:56 PM

You have explained me really, I already know everything. You had to at least support your answer. If you're going to insult me, you better not write anything anymore. I have the original file and stage1 compares the differences. I can upload the same photos from winols. My questions don't have much relation what program I use especially 1

**Act Tuning** · 7th April, 2020, 09:17 PM

With the maps you posted you will not have more boos, regard to fuel you posted lamfa protection and requast lamfa, but few are missing like lamda correction etc.. regard to boost the name of the map in ecm is wrong, and raise boost in the car you have more map related that ecu see as "load", on dv_req is in % 180% load, if na engine is 100% air in the cylnder, this is very general . you need to read much more on petrol how to, protection lamfa 0.90 is danger for very high egt and quick damage. i recommend you to learn much more before changing this map without deeper knowledge.

**chrisimerk** · 7th April, 2020, 09:20 PM

The boost pressure is measured in pascals so your maximum boost request is 1.539 pascals which is 22.3psi or 15.3bar

The second boost map is a boost limiter which is 1.641 pascals which is 16.4 bar and 23.8psi

but even in winols its measured in pascals.

but dont use ecm to tune petrol obviously much more is missing as just raising these 2 maps wont increase boost there are other things coming into factor
but i know what you meant and that your not using ecm to tune them

hope this helps

**Act Tuning** · 7th April, 2020, 09:26 PM

Originally Posted by chrisimerk

The boost pressure is measured in pascals so your maximum boost request is 1.539 pascals which is 22.3psi or 15.3bar

The second boost map is a boost limiter which is 1.641 pascals which is 16.4 bar and 23.8psi

but even in winols its measured in pascals.

but dont use ecm to tune petrol obviously much more is missing
but i know what you meant and that your not using ecm to tune them

hope this helps

15 bar for boost pressure little high no ?!! and ecu calculat via load in % no pas and no units, you can open fr and learn this

**Lambda1** · 7th April, 2020, 09:27 PM

22.3psi or 15.3bar

The second boost map is a boost limiter which is 1.641 pascals which is 16.4 bar and 23.8psi

litte correction : divided his "bar" by 10 and got bar

... so 22.3psi is 1.53bar and 23.8psi is 1.64bar

**Act Tuning** · 7th April, 2020, 09:33 PM

in this ecu you dont have 1.53 request in file, max peak request is around 1.3bar in tq_req , and also need to correct in this maps define in load % no unints

**chrisimerk** · 7th April, 2020, 09:41 PM

ah lambda you are correct mb damn those full stops

**kuba94** · 7th April, 2020, 09:54 PM

How did you calculate that the max is 1.3 bar? this is important information for me

**raceshadow** · 8th April, 2020, 07:13 AM

MED9.jpg

Originally Posted by kuba94

How did you calculate that the max is 1.3 bar? this is important information for me

200x10 = 2000
2000+300 = 2300
2300-1000 = 1300

**kuba94** · 8th April, 2020, 09:06 AM

thank you very much, could you just explain where these numbers come from?
200 - we know
x10 - known because it must be in thousandths
2000 + 300 - where did these 300 come from?
2300-1000 we know we subtract atmospheric pressure

**raceshadow** · 8th April, 2020, 09:46 AM

Originally Posted by kuba94

thank you very much, could you just explain where these numbers come from?
200 - we know
x10 - known because it must be in thousandths
2000 + 300 - where did these 300 come from?
2300-1000 we know we subtract atmospheric pressure

It's just a formula. 10 x LDRXN + 300mbar - 1000mbar atmospheric. Is always added 300 for the boost calculation.