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Title: Replacing the fuel pres regulator to 4 bar Post by: elerium on June 30, 2016, 03:08:27 AM Hi, everybody.
I am, replaced my oem regulator to 4 bar regulator, injectors stock - 317cc, fuel pump from audi tt, i change value in KRKTE to 0,08938. Will i need to do some changes in ECU? Title: Re: Replacing the fuel pres regulator to 4 bar Post by: elerium on June 30, 2016, 11:47:28 AM Right krkte factor 0.000111?
Title: Re: Replacing the fuel pres regulator to 4 bar Post by: vwaudiguy on June 30, 2016, 03:23:55 PM What car/engine? What ecu ID? Why do you want to change from 3 to 4 bar? You're not giving us anything here. In short, you will want to lower krkte when you add larger injectors, or a higher rated fpr.
Title: Re: Replacing the fuel pres regulator to 4 bar Post by: elerium on June 30, 2016, 10:44:09 PM golf mk4, 1.8t AUM 032HJ ECU. I change 3 to 4 bar because i dont want to change the injectors, but i want a little more boost.
I set my KRKTE from 0,1xxxx to 0,08938, but car dont working properly - afr is unstable. Title: Re: Replacing the fuel pres regulator to 4 bar Post by: vwaudiguy on July 01, 2016, 08:34:30 AM Are you still using the stock turbo? Describe your boost profile as it is now. Do you have any logs? How do you know you need more fuel? What are your fuel trims with the 3 bar? What are they with the 4 bar with no changes to the tune?
Title: Re: Replacing the fuel pres regulator to 4 bar Post by: elerium on July 01, 2016, 01:11:21 PM Yes, i use a stock turbo. Boost profile:(http://s002.radikal.ru/i198/1607/22/a8350ac285b1.png)
Log addet. My old fuel pump cant work properly, and i will change them and fpr for the next stage of tuning. Title: Re: Replacing the fuel pres regulator to 4 bar Post by: adam- on July 01, 2016, 01:51:44 PM Log with ME7Logger; VCDS sucks ass. Your logs don't contain enough data either. Also your fuelling is fine, you don't need a 4 bar nor is your boost profile high enough to warrant one.
Title: Re: Replacing the fuel pres regulator to 4 bar Post by: elerium on July 01, 2016, 02:29:52 PM Thanks, i will try ME7logger, what kind of data needs to log? Fuelling not fine in first run mixture at 5000 rpm was - 0,9, and at second run - 0,75.
4 bar fpr i also installed, now i want to make the car work Title: Re: Replacing the fuel pres regulator to 4 bar Post by: adam- on July 04, 2016, 02:37:17 AM Why do you think you need a 4 bar?
Title: Re: Replacing the fuel pres regulator to 4 bar Post by: elerium on July 04, 2016, 02:52:10 AM I put him in the future for further tuning
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