[Terry @ BMS]

This is going to be the central point of contact or our Stage1 tuner for the MINI Cooper B38, B46, and B48 engines.

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Note this thread is for general discussion only. Technical support and problem reports will be deleted without being read. If you need technical assistance post the details in the support forum or email in to BMS technical support.

Map Guide:

Map 0: Fully disables tuner
Map 1: Pump gas performance map

Install Guide: Install Guide

JB4 Interface: Latest Interface Download.

If you need directions on how to connect a laptop to your JB4 to update firmware or how to datalog Click here.

Flex fuel connector:

The add on connector wires in to the DB25 connector. Unplug the negative battery cable before working with any wiring. Insert the male pin in to spot #21 on the DB25, and the female pin in to spot #20. The connector then installs on the fuel rail sensor.

[FatF56S]

Hey Terry I'm wanting to start doing a little more aggressive tuning on my F56 Mini. How do I get my hand on the flex fuel connector for our cars?

[Terry @ BMS]

You'll just grab the FF connecter off the N55 page on our site. Include a comment to attach a DSUB pin to the second wire so it can attach to the B48 harness.

[FatF56S]

Thanks orders in.

[hcorrea]

Terry. this would be a first update of the firmeware stage1? something new?

[FatF56S]

[FatF56S]

What are the changes in the new firmware update Terry?

[hcorrea]

today installed stage1 firmware update. I realized that excessive pressure variation was almost imperceptible. I do not know if it was the software of the ff connector or something else that made the most stable acceleration. may be able to increase boost without gearbox emergency.

[FatF56S]

Have you done any logs on the new firmware before altering it?

[hcorrea]

has no way to make logs. I'm using a mini ipad to monitor some parameters. use the DashCmd connected via OBD2. today already checked the lambda and fuel trim. fully within the limits that Terry signaled. My big problem is the limit that the gearbox requires. in your case can not be this limiter.

[Terry @ BMS]

I would caution against pushing Stage 1 too far. We'll need a JB4 to really maximize the platform IMHO.

[FatF56S]

Let's get this JB4 action going then I'm fairly certain they would sell out mini guys love to push the envelope

[FatF56S]

Originally Posted by Terry @ BMS

I would caution against pushing Stage 1 too far. We'll need a JB4 to really maximize the platform IMHO.

1. So to alter the boost on our Stage1 we use the boost failsafe box and map 3? 2. Do the boxes to the left next to the RPM's do anything for us?
3. Connecting the Flexfuel adapter do we also use pin position 21?
4. When running the Flexfuel adapter what settings should I Adjust?

Thanks in advance.

[hcorrea]

Map 0: Fully disables tuner
Map 1: Pump gas performance map


for the FF there are two wires. One going to the male pin and one to the female. Plug the male pin in to spot #21 on the DB25. Plug the female pin in to spot #20. Then connect the sensor to the fuel rail.

Ajustments
Boost failsafe 6.5psi
Wastegate 2
Fuel open loop 50

40% ethanol
60% gas

[FatF56S]

Do we use map 3

[hcorrea]

Originally Posted by FatF56S

Do we use map 3

Mr. Terry! Help...

[FatF56S]

This is all that I can find about using different maps with BMS Stage1
Map guide for newer G3_V2 Stage1 systems: Map 0: Bypass map, system completely disabled Map 1: Normal performance map. Adds +4psi over stock regardless of "Boost Failsafe PSI" setting under user adjustment. Map 2: Not currently used. Map 3: User adjustable map. Adds a user defined amount of boost over stock. That boost level is defined under the "Boost Failsafe PSI" box under user adjustment. For example a setting of 3.0 will result in approximately 3psi peak over stock.

[FatF56S]

Terry, Please look these over and tell me what you think


map3 6psi 20-100.csv
Map3 6psi intown.csv
map3 7psi 15-90 pull.csv

[FatF56S]

Can we just get a JB4

[hcorrea]

Walked about 100 miles on the road. I noticed that the fuel trim, compared to that seen previously, showed much lower values. Before I saw the peaks of + 30 ~ 40%, added the long and short trim values. Now no more than 10%. As previously reported, disappeared pressure hesitation at the start of acceleration. Lambda, still very lean, but as the OEM, close to 13.3 at WOT. The improvement was impressive. congratulations.

I'll take to the Dyno this coming week. I want to check if there was any loss of power and torque. I believe the Stage1 still accept a slight pressure increase and would use a small addition of ethanol. E50 maybe!

[FatF56S]

That sounds awesome. I can't wait to see the Dyno numbers. Does the Stage1 still do its thing as far as what BMS intended it to do if we alter the BOOST levels in the failsafe?

[FatF56S]

Terry, there's money's to be spent I need upgrades!

[FatF56S]

10-13 over the base I mean. But more boost means earlier detonation right? I'm a carbureted jeep guy so I need things spelled out, sorry....

[thisthat42]

Has there been any testing with the Stage 1 on a B46 with the JCW Tuning Kit? I'm also curious now much concern there would be doing that with the sport auto transmission.

[Terry @ BMS]

Originally Posted by FatF56S

Terry, Please look these over and tell me what you think

Boost looks OK but the Stage1 can't log timing or AFR, which we'd want to determine if those higher settings are actually safe. It's probably fine, though.