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JB4 Logging, stacking and Map 6 Discussion

K

Ketheptis

New member
Location
Chicago
Diggs24 said:
Yes, that is psi over stock. Additive is better than absolute, no tweaking for changes in IATs. Run it year round.
Click to expand...


Yeah, 2016 GTI with a catted DP as the only power adding mod. Was looking at a small tweak in the mid range RPM's, just to make it feel even more punchy for around town driving, and passing acceleration.

Fuel Open Loop: 50 All fuel Bias set to: 100

1500 0
2000 2
2500 3
3000 3.5
3500 4
4000 4.5
4500 5.2
5000 5.5
5500 6
6000 6
6500 6
7000 6
 
shortyb

shortyb

Autocross Newbie
Location
Upstate SC
Car(s)
Felon Taxi,Dad Wagon
logs.png
 
shortyb

shortyb

Autocross Newbie
Location
Upstate SC
Car(s)
Felon Taxi,Dad Wagon
Ketheptis said:
So Map 6 loads as absolute values. Is that why I'm changing FOB from 45 to 50?
Click to expand...

You can do either. Values less than 10 are seen as additive to the JB4. Over 10 are seen as absolute. Additive is preferable, as stated, to the set and forget crowd as they regulate boost overall regardless of temps, wherein you should raise and lower absolute values based on temp.

Raising FOL adjusts fuel trim to supply a bit more fuel. As temps/boost go up, ECU demands more fuel in an attempt to cool the combustion charge.
 
Last edited:
Andrewbens

Andrewbens

Go Kart Champion
Location
Modesto
Car(s)
2019 GTi S 6 Speed
Ketheptis said:
Yeah, 2016 GTI with a catted DP as the only power adding mod. Was looking at a small tweak in the mid range RPM's, just to make it feel even more punchy for around town driving, and passing acceleration.

Fuel Open Loop: 50 All fuel Bias set to: 100

1500 0
2000 2
2500 3
3000 3.5
3500 4
4000 4.5
4500 5.2
5000 5.5
5500 6
6000 6
6500 6
7000 6
Click to expand...

Thanks this is great to compare to my map 6 E30 setup that AJ helped me with or pretty much did all the work.
 

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shortyb

shortyb

Autocross Newbie
Location
Upstate SC
Car(s)
Felon Taxi,Dad Wagon
Andrewbens said:
Thanks this is great to compare to my map 6 E30 setup that AJ helped me with or pretty much did all the work.
Click to expand...

Pretty stout there @5K up, interested in what happens to fuel and if you'll get the same kind of advance as before.
 
TheMechanicDude

TheMechanicDude

Drag Racing Champion
Location
Fl
Car(s)
17 GTI Sport
Diggs24 said:
Looks good. It's hot.
Click to expand...
ya tell me about it. Ridiculously hot and they still haven't opened our pool.

Too hot to keep Map 3? Headed on a road trip and was going to fill up with maybe another gallon of E and the rest 93. At just under 1/2 now.
 
E

El_bigote_AJ

Autocross Champion
Location
Las Vegas
Car(s)
2019 GTI bunny
Last edited:
E

El_bigote_AJ

Autocross Champion
Location
Las Vegas
Car(s)
2019 GTI bunny
ChrisMk77 said:
Get that turbo a real tune already, sure it makes more power per psi compared to a is20 but mine boosts 1-6psi more and have 8-10 degrees more timing through the rpm range on E40.
Click to expand...
That’s not my log, that’s Andrews log above, With the setting he showed on his screen shot - is20.

mine with the jb4 and meth is doing 25-26 at peak and tapering 22/23 at 6800.

now funny you say that for me... my AP is showing up on the 8th 😃 and I’m putting in the 305 lpfp this weekend in preparations.
 
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