My JB4 guys

[NFamous60]

So got mine installed I like it alot honestly. From those still using it what gains are you seeing from it with what mods? I'm on map 3, but it's kinda hard to see which mods support which maps. I brought 2 tunes from Jesse today so I'll get that going soon. Kinda wanted some other perspectives on using it. Cause the member market is now flooding with them for sale.

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[Avarela99]

Downpipe on map 2 on 93 is what i used personally and i really liked it. Map 3 was choppy tbh custom map from Jesse is the way to go

 

[zrk]

500ish HP from Jesse on E40 + Meth.

 

[Spiguyver]

Yeah like @zrk said, around 500 is what you can get. I just moved and spent the last 3 weeks driving in Map 2 on 93. The car was still fun, but it lacked something. This past weekend I finally got to an e85 station and got back to about an e50 blend and topped off my Methanol then changed it back to Map 6. Oh man, that was what I was missing! So much better! I've been running tunes with Jesse for quite a while. I have several YouTube videos on the subject. If you've got any questions, fire away!

 

[Pito]

So got mine installed I like it alot honestly. From those still using it what gains are you seeing from it with what mods? I'm on map 3, but it's kinda hard to see which mods support which maps. I brought 2 tunes from Jesse today so I'll get that going soon. Kinda wanted some other perspectives on using it. Cause the member market is now flooding with them for sale.

I'd hop off map 3 and back to map 2. Some have had problems. Even to the point of blowing turbos. Stick to map 2 until Jesse dials you in. His tune is enough for me to wait it out until cloning becomes a bit less expensive and time consuming.

 

[kaj]

How are you guys running more than 25-30% ethanol? What are your injector duty cycles?

 

[Spiguyver]

How are you guys running more than 25-30% ethanol? What are your injector duty cycles?

The addition of methanol injection is the key.

 

[romanLegion9574]

I'd hop off map 3 and back to map 2. Some have had problems. Even to the point of blowing turbos. Stick to map 2 until Jesse dials you in. His tune is enough for me to wait it out until cloning becomes a bit less expensive and time consuming.

Seconded here -- plenty of folks on the bimmer forums with blown turbos on map3. Especially since WA is 92 octane. You probably want to get a 91 tune from Jesse for pump gas.

 

[razorlab]

How are you guys running more than 25-30% ethanol? What are your injector duty cycles?

Since these are DI, you need to look at fuel pressure as the HPFP has a hard time keeping up on higher levels of ethanol, which will drop the fuel pressure.

 

[NFamous60]

Def

500ish HP from Jesse on E40 + Meth.

What I'm looking for e50 would be easier for me to keep up with but did buy a e analyzer

 

[NFamous60]

Yeah like @zrk said, around 500 is what you can get. I just moved and spent the last 3 weeks driving in Map 2 on 93. The car was still fun, but it lacked something. This past weekend I finally got to an e85 station and got back to about an e50 blend and topped off my Methanol then changed it back to Map 6. Oh man, that was what I was missing! So much better! I've been running tunes with Jesse for quite a while. I have several YouTube videos on the subject. If you've got any questions, fire away!

Think I follow ur YouTube channel car looks familiar, Map 3 seems choppy, sometimes it's easy on throttle response other times requires alot of pedal input to get going then its abrupt.,

 

[NFamous60]

I'd hop off map 3 and back to map 2. Some have had problems. Even to the point of blowing turbos. Stick to map 2 until Jesse dials you in. His tune is enough for me to wait it out until cloning becomes a bit less expensive and time consuming.

Thank you for that switching now

 

[zrk]

Def

What I'm looking for e50 would be easier for me to keep up with but did buy a e analyzer

You won't be able to keep the car running safely on E50. You'll run way lean.

 

[NFamous60]

Since these are DI, you need to look at fuel pressure as the HPFP has a hard time keeping up on higher levels of ethanol, which will drop the fuel pressure.

Even at these power levels?

 

[NFamous60]

You won't be able to keep the car running safely on E50. You'll run way lean.

Ok gotcha so e40 would be pushing it, and e30 is safer then that?

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