FOL is Fuel Open Loop setting and affects fuel trims. Its what drives fuel delivery when given demand. Generally, on a GTI running E-blends, the trims go high (>40) to add extra fuel to compensate for the lower fuel density of ethanol. Rail pressure also goes down and injector pulse width widens because it is trying to keep up with the fuel demand and has limitations. When these limits are critical, you get CEL and lean fuel conditions (no bueno). Raising the FOL to around 60 helps E-blend cars that are on the edge fueling-wise provide an additional cushion of headroom and helps avoid this condition. FOL is a "global" setting and applies to all maps, ie; you don't have to change it when changing maps. Hope this helps a bit.What determines the FOL setting? Default looks to be 45. Is it ok to just leave it there on Map 2 and 3?
If you're going to only use Map 1...you might as well get a Neuspeed Power Module and save yourself some money. I ran Map 1 and there wasn't a noticeable difference between the NPM and JB4. The NPM in the 7psi setting feels like it makes more torque than the JB4 in Map 2. The issue I had with the NPM is that as you move into the upper part of the RPM range...the NPM dies down big time. The JB4 in Map 2 feels like its more consistent all the way to redline. I'm in So Cal and run 91. The octane for Map 2 and 3 say "93 recommended" not absolutely needed.Sorry if this was asked many times before.
I drive a 2019 Mk7.5 GTI w/ DSG with the stock air box mod and a TCR muffler. I also live in California and don't have easy access to anything more than 91 octane gas. It looks like Map 1 is the only way to go for me? Will I need to posi tap the AFR wire if I'm only running Map 1 on the Mk7.5?
You can not run map 2 or 3 on Cali 91, barely map 1 in summer. Pretty sure plenty of Bay Area forum members run E85, worst case get some sealed jugs and go for a slight roadtrip once a month.Do you need any bolt ons to run map 2 or 3 with 91 octane?
I run map 3 daily on California 91 octane with a fmic and dpYou can not run map 2 or 3 on Cali 91, barely map 1 in summer. Pretty sure plenty of Bay Area forum members run E85, worst case get some sealed jugs and go for a slight roadtrip once a month.
So did I. The first thing you should do is clear all the values from the previous owner. I got lucky and was able to participate in a JB4 beta release test which gave me access to George. He helped me build my first Map 6. After that, some great people in this thread like Diggs, shortyb, ChrisMK77 helped me understand what each change meant to the log. I would ask someone running California 91 octane to provide starter settings, then post logs and ask for feedback.