[LsRamAir]

Originally Posted by dRDiesel

Any Q owner posting in here from Southern California?

Right by magic mountain here... SCV

[Boringdriver]

Just installed a JB4 on my ‘18 RS400. Please check this log running on map 5. Gas: 93 octane.

Side note, all the standard gauges work except for the gear, is that normal?

[Terry @ BMS]

Originally Posted by Boringdriver

Just installed a JB4 on my ‘18 RS400. Please check this log running on map 5. Gas: 93 octane.

Side note, all the standard gauges work except for the gear, is that normal?

Looks strong to me. Gear is not programmed yet, but road speed is.

[jrobohm]

Terry - Would there be any advantage for the JB4 to integrate with the wastegate on the VR30 engine as there is on the BMS engine platforms?

[Terry @ BMS]

Yes there should be. We're working on it.

[Boxy]

Hey Terry@BMS,

I noticed something weird last night and got a log of it today. On the highway, when dumping the throttle in Sport+, I hear a pop from my exhaust.

I'm running E30, upgraded LPFP, L*** + 3.0" catback, intakes, and JB4 with the following Map6:

4
4
5
6
7
7
6.5
4.5
3
2
1
0

Anyway, the pop is super weird and the log is even weirder. I cut out the beginning of the log as it was a lot longer but essentially between timestamp 1251.25 and 1254.75 there is data missing and the RPM jumps from 3962 to 5750, and then drops down to 5387??? I don't think I was spinning at 60mph, so I'm not sure what's going on.

Log is attached.

Thanks!

[Terry @ BMS]

Looks like DSC kicking in as RPM jumps down, so maybe just normal behavior that you can now hear with the exhaust.

[Boxy]

Originally Posted by Terry @ BMS

Looks like DSC kicking in as RPM jumps down, so maybe just normal behavior that you can now hear with the exhaust.

I had traction off in sport + and was going in a straight line at 60mph on the interstate... are you sure it's DSC?

[Boxy]

Also I'm still confused why there's no logging for the 3 seconds that I'm jumping 1800RPM, doesn't JB4 log mroe often than that?

[ddnspider]

stock SS with JB4 Map 2, please review logs. Thank you.

[Terry @ BMS]

Originally Posted by ddnspider

stock SS with JB4 Map 2, please review logs. Thank you.

Looks fine to me.

[Terry @ BMS]

Originally Posted by Boxy

Also I'm still confused why there's no logging for the 3 seconds that I'm jumping 1800RPM, doesn't JB4 log mroe often than that?

Logs whatever you record. By default it only logs full throttle unless starting or stopping logs manually to record part throttle.

[ddnspider]

Originally Posted by Terry @ BMS

Looks fine to me.

Thanks Terry. When I tried to graph myself in excel, I thought I was seeing some dips in timing so I wanted confirmation that it looked ok, AFR seemed to hover around 12:1. I'm not used to these direct injection motors running leaner than port injection. Avg Ign was zero so I take it that is a good thing since its not pulling timing?

[rlora]

Originally Posted by EsTee

can adapt to any intake setup, and not cause jerking like the generic 45 degree setups (see Stillen's).

I ordered a set and will test and report on my Q50 RS as I bought a used Stillen Intake.

[Terry @ BMS]

Originally Posted by ddnspider

Thanks Terry. When I tried to graph myself in excel, I thought I was seeing some dips in timing so I wanted confirmation that it looked ok, AFR seemed to hover around 12:1. I'm not used to these direct injection motors running leaner than port injection. Avg Ign was zero so I take it that is a good thing since its not pulling timing?

Use the JB4 windows interface to open and scroll along logs, much easier. Then if a question comes up you can post the log and the timestamp so I know what you're referring to.

That platform is nothing.. We run the BMWs at 14.3:1 @ peak torque and 13.5:1 @ peak HP sometimes. Direct injection is a new ball game all together.

[ddnspider]

Originally Posted by Terry @ BMS

Use the JB4 windows interface to open and scroll along logs, much easier. Then if a question comes up you can post the log and the timestamp so I know what you're referring to.

That platform is nothing.. We run the BMWs at 14.3:1 @ peak torque and 13.5:1 @ peak HP sometimes. Direct injection is a new ball game all together.

Thanks Terry good idea. I'm super curious about this DI AFR now from what you said the BMW guys run. Someone else who is highly trusted in the domestic world and OEM calibeates has said they're shotting for mid 11s AFR on their boosted DI setups. Maybe you've heard of him, Greg Banish? Onviously different platforms but it would be interesting to compare notes.

[Terry @ BMS]

I learned 10 years ago when I started with DI motors that trying to convince the old timers as to how to tune them is wasted breath. They'll have to figure it out for themselves. The actual AFR target depends largely on the engine, combustion chamber shape, etc. The risk of running too lean is generally a high EGT that leads to detonation, preignition, melting plugs and valves, etc. You'll find none of those symptoms with this platform.

[ddnspider]

Cool, good to know!

[PRQ50]

Hi Terry

Will oil pressure be eventually added to one of the parameters?

Thanks

[Terry @ BMS]

If there is enough demand we can work on it. Wasn't on my radar though. Why do you need it?

[PRQ50]

Originally Posted by Terry @ BMS

If there is enough demand we can work on it. Wasn't on my radar though. Why do you need it?

Since 0w20 oil is used on this engine, and we know viscosity lowers past the 212F standards. Just wanted to monitor it when I take my car to the track.

Thanks

[ddnspider]

Originally Posted by PRQ50

Since 0w20 oil is used on this engine, and we know viscosity lowers past the 212F standards. Just wanted to monitor it when I take my car to the track.

Thanks

I 2nd this. Also curious in any other PIDS that may be on the list to be revealed so we can log.

[QFitty]

Does anyone know how to reset the JB4 so another person can use it after its been resold?

[Boostin335]

Originally Posted by Terry @ BMS

Awesome! Always nice to see cross platform BMS customers.

You should be fine on map5 with good 93 octane on a 300hp model. Huge power gains vs stock if that is your question.

Map 5 is 5 psi?

On this dyno sheet, is it the orange one? 355/375

http://www.burgertuning.com/images/d...pump_dyno.JPEG

[Terry @ BMS]

Map5 is 6psi peak, tapering to redline.