[LoGav14]

Originally Posted by TypeOne

DM me if you want to sell the JB4.

Since I'm new here, I can not use the PM feature for 7 days and "several post" and replies. I could IG you.

[DKNICK]

Originally Posted by LoGav14

Hi everyone, This is my first post... New to here but not new to modding cars. I have had the JB4 for 3 months. I would say it is noticeable but not life changing. So...

As I type this I'm getting the Pure800 installed, DEM Unlocked, and JB4 to BM3 with a custom dyno tune. So I will have a JB4 for sale hopefully next week.

Interested in this. DanielKnick81@gmail.com

[LoGav14]

Originally Posted by DKNICK

Interested in this. DanielKnick81@gmail.com

I just emailed you.

[Brittster]

Originally Posted by LoGav14

Hi everyone, This is my first post... New to here but not new to modding cars. I have had the JB4 for 3 months. I would say it is noticeable but not life changing. So...

As I type this I'm getting the Pure800 installed, DEM Unlocked, and JB4 to BM3 with a custom dyno tune. So I will have a JB4 for sale hopefully next week.

So what were the results of the pure800 and BM3 ??????

[BMWb58]

bump**

[Bavar-ian]

On the rollers with JB4.
FTP chargepipes.
Armaspeed intake.
MP exhaust.
2 port WMI.
Making nice power on custome tune once the IATs drops below 40degC on hot GMT+8 days like now.

[hitter07]

Originally Posted by gtenedio

jb4 installed on 40i

noticeable difference- low end power is much better, but nothing crazy. the acceleration on this truck is quite numb tbh. coming from an f90 so my foot is still adapting to the new normal.

i've gone up to e30 on map 3, pulling strong. planning on testing some absolute maps this week with e30/e40.

Is anything else done to your x5 or just chip? just bought an x5 and the chip, looking to see if anything else needs to be done to it.

[hitter07]

Does the OBD need to stay connected?

[weinerbarn]

Originally Posted by hitter07

Does the OBD need to stay connected?

Not required but beneficial if you do. The JB4 monitors sensor feedback realtime via OBD so if things get unsafe with knock or fuel mixture, the JB4 reverts back to stock settings so as not to cause damage. It's a great feature.

[hitter07]

Originally Posted by weinerbarn

Not required but beneficial if you do. The JB4 monitors sensor feedback realtime via OBD so if things get unsafe with knock or fuel mixture, the JB4 reverts back to stock settings so as not to cause damage. It's a great feature.

Thanks, any advice on which map to run safely stock? and can i run str8 e95 fuel?

[akoni210]

what is the jb4?

[hitter07]

Originally Posted by jpolabam

I've just had the JB4 and a AA catted 400 cell downpipe fitted yesterday.

Running map 2 on 98, coming onto boost is a lot more noticeable and it pulls to redline harder.

It's not a kick in the back so to speak but I feel like it has livened up the engine. The auto shop that installed it recommended I dont use map 3 unless I add in octane booster.

You can see cables on the passenger side (Left) as the unit is tucked under the grill below the windscreen.

Where did they run the obd cable ?

[weinerbarn]

Originally Posted by hitter07

Thanks, any advice on which map to run safely stock? and can i run str8 e95 fuel?

Sorry just noticed this. Map 1 is the safest and can be run on 91. Map 2 is still safe but you need 93 which isn't available in all areas ... or you can add a few gallons of e85 to 91 to get the octane up.

BTW - Those are AKI (US numbers) not RON (Europe) octane numbers.

You can run the cable up by the hood cowl and tuck it between the fender and door, then feed it along the rubber trim down to the OBD port by the trunk release area if you don't want to fish it through the firewall and under the dash. That's what a lot of people do.

[hitter07]

Originally Posted by weinerbarn

Sorry just noticed this. Map 1 is the safest and can be run on 91. Map 2 is still safe but you need 93 which isn't available in all areas ... or you can add a few gallons of e85 to 91 to get the octane up.

BTW - Those are AKI (US numbers) not RON (Europe) octane numbers.

You can run the cable up by the hood cowl and tuck it between the fender and door, then feed it along the rubber trim down to the OBD port by the trunk release area if you don't want to fish it through the firewall and under the dash. That's what a lot of people do.

Thxs i use 93 so ill run 1 most of the time and try 2 out every now and then. Thanks for the help

[cobramite]

Originally Posted by akoni210

what is the jb4?

Google that one. There is a wealth of info out there concerning the JB4, Racechip, and other piggy back tuners.
You will be better able to understand this stuff after some reading about how these devices actually work as well as what they can or cannot do.

[mike@x-ph.com]

Originally Posted by akoni210

what is the jb4?

It's a piggyback that increases boost and makes significant power.

Its also got a lot more features but its impossible to explain it all in one post.

[cobramite]

^^^^^^This.

[DKNICK]

I’ve got one for sale right now