[Boxy]

Originally Posted by Terry @ BMS

Looks OK so far but try a longer run when it's safe to do so.

Hey Terry @ BMS,

Finally got a chance to do some good clean logs last night. Well, as clean as can be. You can see traction kicking in with the ECU psi going up and down, but JB4 seems to be doing its job.

I took two logs back to back, one with fuel control enabled and one without. Both were a run from 40mph in 4th gear (to minimize traction control interference, otherwise would have done it in 2nd or 3rd).

Ambient temp was 59.

I'm thinking I can probably push more boost in the higher RPM range, but not sure. Let me know what you think.

I've also got a few more logs I can post if you'd like.

Thanks!

[Jasonviper]

Originally Posted by Terry @ BMS

Yes you'll trigger codes if firmware fails and ign power is cycled. Just clear all codes now.

Thanks Terry. Since I don’t have fuel wires connected yet should I change any settings in JB4?

[Swamp801]

Terry @ BMS

Can you check my log with fuel wire?

The passenger side was a pain to install. How do I know it was installed correctly and it is working?

[Terry @ BMS]

Originally Posted by Swamp801

Terry @ BMS

Can you check my log with fuel wire?

The passenger side was a pain to install. How do I know it was installed correctly and it is working?

They are disabled with your FUD setting.

[ddnspider]

Originally Posted by Swamp801

Terry @ BMS
.....How do I know it was installed correctly and it is working?

If you turned on bit 0, your AFR should sit at ~12.5 for most of the pull once the turbos are spooled up.

[monsta121]

Terry @ BMS,

Can you please review my log? I did a full 3rd gear pull partially into 4th. This is with the fuel wires connected and turned on. Does it look like I can increase the anywhere in the rev range or is this pretty much maxed out? Thanks!

2019 Q50 SS w/ Stillen Intakes. 93 fuel.

[Terry @ BMS]

Fuel wires look ok.

Why are you limiting more boost in 2nd gear than 1st?

[monsta121]

Originally Posted by Terry @ BMS

Fuel wires look ok.

Why are you limiting more boost in 2nd gear than 1st?

Not sure if you are referring to me but I was not aware that boost was being limited in 2nd more than 1st. Where can I adjust that? I've attached screenshots of my current settings.

[Boxy]

Hey Terry @ BMS,

Couple questions:

Did you get a chance to take a look at my logs above?

Also, for boost by gear in v5 you noted:

"1) Adjusted boost by gear to allow targeting of less than the factory (or flashed) boost target. For example a 1st gear setting of 6psi will reduce boost in 1st gear by 6psi regardless of the JB4 boost target. Very useful for those using JB4 in conjunction with flash maps that have higher boost targets."

Does this mean that if my JB4 is targeting let's say +6, and I set boost in 1st to 6, it'll even out and I'll run stock PSI, or will it reduce 6 from stock?

Thanks!

[Payam @ BMS]

Originally Posted by monsta121

Not sure if you are referring to me but I was not aware that boost was being limited in 2nd more than 1st. Where can I adjust that? I've attached screenshots of my current settings.

Where it says
Max boost 1st you have 3
Max boost 2nd you have 4

Those values are minus stock. So in second gear you're requesting -4psi from stock.
You'd want to values the other way around

[Terry @ BMS]

Originally Posted by Boxy

Does this mean that if my JB4 is targeting let's say +6, and I set boost in 1st to 6, it'll even out and I'll run stock PSI, or will it reduce 6 from stock?

Thanks!

If the JB4 is targeting +6psi and 1st gear is -6psi, you'll make 0psi over stock. If JB4 was targeting 2psi and 1st gear is -6psi, you'd make 4psi less than stock.

[Terry @ BMS]

Originally Posted by Boxy

I took two logs back to back, one with fuel control enabled and one without. Both were a run from 40mph in 4th gear (to minimize traction control interference, otherwise would have done it in 2nd or 3rd).

Ambient temp was 59.

I'm thinking I can probably push more boost in the higher RPM range, but not sure. Let me know what you think.

I've also got a few more logs I can post if you'd like.

Thanks!

Nice logs, thanks. Seems to be working as it should be although I expected fuel trims when enabled to be a bit lower relative to without fuel control. Shift the shift points are difference, boost is different, so that might be eating up the difference I'm looking for. You're sure the fuel wires themselves are making a solid connection?

[Boxy]

Originally Posted by Terry @ BMS

If the JB4 is targeting +6psi and 1st gear is -6psi, you'll make 0psi over stock. If JB4 was targeting 2psi and 1st gear is -6psi, you'd make 4psi less than stock.

Perfect, thanks for the clarification!

Originally Posted by Terry @ BMS

Nice logs, thanks. Seems to be working as it should be although I expected fuel trims when enabled to be a bit lower relative to without fuel control. Shift the shift points are difference, boost is different, so that might be eating up the difference I'm looking for. You're sure the fuel wires themselves are making a solid connection?

No prob! I'm taking it to the dyno on Saturday, so I can get more logs to share without VDC kicking in, haha.

I'll double check the fuel wires tonight. Both these logs were taken from 4th gear in a 40 roll, so it should be pretty identical for most of the log. Boost difference may be traction control intervening more since I'm probably making more power with fuel control on.

The trims is odd, agreed. Not sure what's going on there. I'll double check and maybe try and take another good log before I take it to the dyno in case there's something we need to revise.

Thanks, Terry!

[ddnspider]

@Boxy, whats your map 6 look like? Your making quite a bit more boost than I am and I thought we had close map 6's.

[RandyNester]

Terry can you take a look at my log? Just installed the fuel wires. Running Map 6.

[19_Q50RS]

Will the fuel wires help those with turbo back exhaust?

[ddnspider]

Terry, have you seen mods like down ***** and exhaust increase the boost levels on a stock tune? I wanted to do a comparison of map 6 vs map 0 on my 3.0t premium. Map 0 logged about 11 psi and I thought they were supposed to be about 8.

[Swamp801]

Terry @ BMS

Can you check my log with the fuel wire installed and enabled.

[Terry @ BMS]

Originally Posted by Swamp801

Terry @ BMS

Can you check my log with the fuel wire installed and enabled.

Seems active to me!

[RandyNester]

Originally Posted by Terry @ BMS

Seems active to me!

Notice any area when it can be improved?

[Terry @ BMS]

There is always room for improvement. For now it's doing what we want.

[monsta121]

Originally Posted by ddnspider

Terry, I got my firmware updated and fuel wires added and bit 0 turned on. I noticed something odd. When coasting it looks like the AFR readings flash back and forth on decel. Previously they would basically go to 0 since the car is pulling all fuel. Are these inputs to the PIC high impedance? Seems wierd. See attached log.

I have noticed the same issue. When coasting with fuel control turned off the AFR reading would be at 0. With the fuel control turned on it goes back and forth between 0 and 20.xx.
Terry @ BMS Is this something we should be worried about?

[monsta121]

Originally Posted by Payam @ BMS

Where it says
Max boost 1st you have 3
Max boost 2nd you have 4

Those values are minus stock. So in second gear you're requesting -4psi from stock.
You'd want to values the other way around

Ohhh, I see. Didn't realize it was even set or thats the way it worked lol.

[Terry @ BMS]

Originally Posted by monsta121

I have noticed the same issue. When coasting with fuel control turned off the AFR reading would be at 0. With the fuel control turned on it goes back and forth between 0 and 20.xx.
Terry @ BMS Is this something we should be worried about?

No just a logging glitch we'll have to look at.

[joshperez305]

Are the Fuel wires up for sale already?