JB4 G5 Dyno

[trickcruiser]

So Friday a few friends and I were able to get out of work and spend the day on the Dyno!

Weather: 77 degrees with humidity around 78%
Car: 2008 135i - 38,000 - Auto
Mods: JB4 G5, Map 3 75add 2x CM10 100% VP Meth, AR DP's, AA FMIC, RPI Exhaust, ER CP, Synapse BOV, DCI, and 5 Gallons of VP 109

Map 0 - 293/299
Map 3 - 433/473

I personally think that with a flip of a switch netting an increase of 140/174 is pretty impressive. :drinking:


Video:



Dyno:



Log:

[tedM1]

so you used race fuel? or 93 octane?

[trickcruiser]

I was running VP 109

[tedM1]

do you have numbers using pump gas?

[haitham87]

is that arabic on the flag to the right of the car?

[trickcruiser]

Originally Posted by tedM1

do you have numbers using pump gas?

Not with the G5 and 2x meth at 100%...
With the 18ohm G4, 93 octane, and single line meth at 70% I put down 401/433. I was told by many that with the 15ohm mod I should of picked up another 10-15 whp/whtq.

Originally Posted by haitham87

is that arabic on the flag to the right of the car?

It is. One of the guys there served and brought it home with him. It says in english something along the lines of stay back 1,000 feet or we will shoot!

[ken1137]

Very nice ! You've created a Monster.

[1speedbike]

Originally Posted by trickcruiser

Not with the G5 and 2x meth at 100%...
With the 18ohm G4, 93 octane, and single line meth at 70% I put down 401/433. I was told by many that with the 15ohm mod I should of picked up another 1015 whp/whtq.

Didn't know the 15 ohm mod added THAT much power!




But yeah, I'm surprised you got to 430+ hp without the 15 ohms. Usually you're limited to a smidge over 400 whp. 401/433 with just the one meth nozzle spraying is awesome as well. Wow. Great results!

[trickcruiser]

Originally Posted by 1speedbike

But yeah, I'm surprised you got to 430+ hp without the 15 ohms. Usually you're limited to a smidge over 400 whp. 401/433 with just the one meth nozzle spraying is awesome as well. Wow. Great results!

The new numbers (433/473) were achieved with the new G5 board. This board is designed for higher boost and is an alternative to the G4 15ohm.

Also, I would expect at least 1,015 extra out of it!
^^^Fixed^^^

[ragingpanda]

Why stop at only 5500 rpms?

[1speedbike]

Originally Posted by trickcruiser

The new numbers (433/473) were achieved with the new G5 board. This board is designed for higher boost and is an alternative to the G4 15ohm.

Ohhh! I'm dumb lol. How'd you get your hands on the G5 board? Any idea how much they're planning to charge for an upgrade? All good if you don't know, so don't worry about it. Still, awesome numbers!

[trickcruiser]

Originally Posted by ragingpanda

Why stop at only 5500 rpms?

I actually did full pulls to 7,000 (see my data log) but for some reason they hit stop record... If the log were to hold true vs the map 0 log I would guess that I might of had a couple more hp in there!

Originally Posted by 1speedbike

Ohhh! I'm dumb lol. How'd you get your hands on the G5 board? Any idea how much they're planning to charge for an upgrade? All good if you don't know, so don't worry about it. Still, awesome numbers!

Over on N54tech, BMS is selling the upgrade for $50 + $100 core charge for a JB4 G4 exchange. Thanks again!

[Angerman]

What is this G4, G5 thing people are talking about

[geared]

- same as above....

[trickcruiser]

Originally Posted by Angerman

What is this G4, G5 thing people are talking about

Originally Posted by geared

- same as above....

There are now 3 JB4's out there
1: JB4 18ohm resistors - They were initially released this way.
2: JB4 15ohm resistors - People could mod their board and change the resistors out making it easier to hit higher target boost.
3: JB4 G5 - New board that is designed for higher boost cars. Mainly developed for higher boost and the RB turbo guys.
Hope that helps,

[Angerman]

Ok thanks....

So you could get JB4 with the 15ohm (still don't really know the non-scientific version of what that means lol) and upgrade it to a JB4 G5 if you upgraded to the RB turbos, etc? What exactly needs to be done to upgrade, is it just a different harness?

[1speedbike]

Originally Posted by Angerman

Ok thanks....

So you could get JB4 with the 15ohm (still don't really know the non-scientific version of what that means lol) and upgrade it to a JB4 G5 if you upgraded to the RB turbos, etc? What exactly needs to be done to upgrade, is it just a different harness?

Well the original JB4 with the 18 ohm resistor had certain limits on it. In order to be within safe limits, people were pretty much capped out at 410 whp. However, people don't like to have a power cap, so they started to solder on 15 ohm resistors instead with Terry's instruction in order to achieve higher numbers. This is (hopefully) done with upgraded turbos or methanol so that the engine is still operating within safe limits with that kind of power. A lot of people did a really bad job soldering and pretty much messed up their original G4 (generation 4) circuit boards on the JB4. Burger started offering a free 15 ohm upgrade if people would mail their JB4 circuit boards in so more people don't mess their shit up. I don't know if the G5 board was developed partly because of that, but with the G5 board from what I gather, you no longer need to do the "15 ohm mod" in order to achieve those higher numbers. There are also a few other modifications to the G5 software I think.

Based on what I just read on n54tech, you can upgrade the regular 18 ohm JB4 to have a 15 ohm resister, or you can skip that and just get a G5 board for $50 plus a $100 deposit you get back when you mail in your original G4 board and a receipt with your address that you bought your JB4 new. There are a few extra pins and connectors to deal with, but it uses the original JB4 harness.

[trickcruiser]

Well put 1speedbike.

[Angerman]

Originally Posted by 1speedbike

Well the original JB4 with the 18 ohm resistor had certain limits on it. In order to be within safe limits, people were pretty much capped out at 410 whp. However, people don't like to have a power cap, so they started to solder on 15 ohm resistors instead with Terry's instruction in order to achieve higher numbers. This is (hopefully) done with upgraded turbos or methanol so that the engine is still operating within safe limits with that kind of power. A lot of people did a really bad job soldering and pretty much messed up their original G4 (generation 4) circuit boards on the JB4. Burger started offering a free 15 ohm upgrade if people would mail their JB4 circuit boards in so more people don't mess their shit up. I don't know if the G5 board was developed partly because of that, but with the G5 board from what I gather, you no longer need to do the "15 ohm mod" in order to achieve those higher numbers. There are also a few other modifications to the G5 software I think.

Based on what I just read on n54tech, you can upgrade the regular 18 ohm JB4 to have a 15 ohm resister, or you can skip that and just get a G5 board for $50 plus a $100 deposit you get back when you mail in your original G4 board and a receipt with your address that you bought your JB4 new. There are a few extra pins and connectors to deal with, but it uses the original JB4 harness.

As always, well said 1Speed . So I can just buy the JB4 from **********s (or whatever), send it to BMS for the G5 upgrade (for about $150 +/-) and be set to achieve whatever?

I'm sorry to thread jack Trickcruiser....by the way, your car looks and sounds fantastic; to stay on topic

[josh135]

Originally Posted by 1speedbike

Well the original JB4 with the 18 ohm resistor had certain limits on it. In order to be within safe limits, people were pretty much capped out at 410 whp. However, people don't like to have a power cap, so they started to solder on 15 ohm resistors instead with Terry's instruction in order to achieve higher numbers. This is (hopefully) done with upgraded turbos or methanol so that the engine is still operating within safe limits with that kind of power. A lot of people did a really bad job soldering and pretty much messed up their original G4 (generation 4) circuit boards on the JB4. Burger started offering a free 15 ohm upgrade if people would mail their JB4 circuit boards in so more people don't mess their shit up. I don't know if the G5 board was developed partly because of that, but with the G5 board from what I gather, you no longer need to do the "15 ohm mod" in order to achieve those higher numbers. There are also a few other modifications to the G5 software I think.

Based on what I just read on n54tech, you can upgrade the regular 18 ohm JB4 to have a 15 ohm resister, or you can skip that and just get a G5 board for $50 plus a $100 deposit you get back when you mail in your original G4 board and a receipt with your address that you bought your JB4 new. There are a few extra pins and connectors to deal with, but it uses the original JB4 harness.

Or if you don't have one you can just buy one because they ship as a 15ohm board now. Don't feel like digging the post but Mike@n54tuning posted the news a while back. That is for the G4 not the G5 board.

[1speedbike]

Originally Posted by Angerman

As always, well said 1Speed . So I can just buy the JB4 from **********s (or whatever), send it to BMS for the G5 upgrade (for about $150 +/-) and be set to achieve whatever?

I'm sorry to thread jack Trickcruiser....by the way, your car looks and sounds fantastic; to stay on topic

Thanks!

If you're buying new, I'm sure you can just buy a JB4 straight with a G5 board and avoid the whole exchange thing altogether if you PM Terry@BMS or Mike@N54Tuning. It's gotta be easier for both you and Terry to just get it like that rather than mail stuff back and forth. If you already got a JB4, though, yes you can just send it to BMS for $150 (Grand total of $50 after the rebate when you mail the old board back). Then you'll be good to go for future turbo upgrades, etc. I have stock turbos but run methanol, so I'm looking into doing this just to not be limited to 410 whp with just the meth and one bung.

Originally Posted by josh135

Or if you don't have one you can just buy one because they ship as a 15ohm board now. Don't feel like digging the post but Mike@n54tuning posted the news a while back. That is for the G4 not the G5 board.

That's true, actually. Thank you! I would prefer having a G5 board out of the box versus a 15 ohm G4 board just because of a few other firmware tweaks specific to it, including built in CPS offsetting and built in speed delimiter. I don't see the G5 board on the BMS site or anything, but it can't hurt to ask about it.

[josh135]

Originally Posted by 1speedbike

That's true, actually. Thank you! I would prefer having a G5 board out of the box versus a 15 ohm G4 board just because of a few other firmware tweaks specific to it, including built in CPS offsetting and built in speed delimiter. I don't see the G5 board on the BMS site or anything, but it can't hurt to ask about it.

I think he had 10 last time I checked. I'm sure you can get one! That was maybe a few weeks ago.