[AndyR83]

I've heard that map 5 on the JB4 "adapts" to your mods and "learns" what's there. I'm curious if this is actually what it's described as. I just bought all the requisite boltons for my car, and am waiting to have them installed. I have been running map 1 since installing the JB4, since my car is otherwise stock. Once I have my dci, dp's, fmic, chargepipe, and bov installed I assume I'll want to push it up to another map. Do I have to do anything other than set it to map 5? Will it really "learn" what's there and adapt? Will this yield better performance than just using map 2 or something?

I run 93 octane 100% of the time and have no access to higher octane fuels. I also have no real interest in running meth.

[ichi_ban]

No, yes, and IDK

I run map 5 all the time. I have DCI, DPs and custom exhaust with E85 shit runs like a beast.

[Randomaccess335]

And meth is awesome
E85 is good
It adapts to cooling higher oct = more ponies

Nike....... Just Do It

[AndyR83]

I don't really have anywhere I can go to get it when I run out though. Modding/performance cars are pretty rare around here, and there's no E85 or similar to be had.

[Randomaccess335]

E85 with map 5 I have read same as meth and 93 oct.

I run meth all the time..... Love the power increase

When I go to the drag strip I run 100 % meth 50/50 e85/93 and up meth additive to 75
Had some fuel codes..... best was a 12.0
All codes issues sorted out I'll see 11's next specially with cold weather

[spool twice]

IIRC any ethanol content measured due to feedback from LAMBDA sensor's results in adjustments, similar to modern Flex-Fueled Vehicles built after 2006 (according to DOE, a reputable agency), but not as complex, and completely different than using ancient technology such as a Flex-Fuel Sensor to measure ethanol content, like on vehicles built before 2006.

In the JB4 "Open Loop" fueling is auto-adjusted to try to keep A/F close to 12.1 as possible (it tries, it may or may not be perfect. I target, and also hover around 12.1). The reason I quoted "Open Loop" is because our fuel system is typically in a closed-loop mode unless otherwise triggered due to a failure of some parts. IIRC "Open Loop" is really more of upping base fuel pressure a certain percentage, which in effect, apparently increases closed loop fuel pressures.

I could be wrong though, so please don't quote me

As for auto-adjusting boost, The JB4 basically tries to make sure it's targeted boost doesn't trigger a DME timing correction, as the JB4 can't compensate for "knock" and uses the OEM DME for such tasks. If the knows the DME just retarded timing, boost is reduced to a safe level until you go into "auto-adjust" mode the next time (3-4 gears, WOT after 3,500rpm)

[Randomaccess335]

Op knows more than me.... Him = research/knowledge

Me = Beer is good