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JB4tech.com - International Turbo Tuning Discussion (https://www.jb4tech.com/forums/index.php)
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Terry @ BMS 04-26-2022 03:15 PM
The fuel limit we're fighting on the JB4 end is with fuel trims. So flashing the ECU would certainly help. As would adding external fuel like WMI or CPI. I don't know where the fuel pressure limit is yet but I'm sure that's well above 600whp.

On the required connectors yes we have them, email me your address and we can send a pair out. Payam is going to make a video on how to attach them to the JB4 harness.

Terry @ BMS 04-26-2022 03:16 PM
Quote:
Originally Posted by Antec800 (Post )
Results on this car are quite disappointing, unfortunately it’s going to be years before someone spends time to crack the dme
~60whp and ~120wtq on ~93 octane is a pretty solid improvement if you ask me. :burnrubber:

Tomholland 04-26-2022 04:28 PM
Looks like some good numbers.

cwhit122 04-30-2022 11:36 PM
What were the mods done on the 21 M550 that was dynoed. I have the same car with DP, CAI, Dinan midpipes and trying to gauge what i can expect since I'm tired of waiting for the DME crack local to the states. (not sending my DME overseas to be cracked)

Terry @ BMS 05-01-2022 07:47 AM
Quote:
Originally Posted by cwhit122 (Post )
What were the mods done on the 21 M550 that was dynoed. I have the same car with DP, CAI, Dinan midpipes and trying to gauge what i can expect since I'm tired of waiting for the DME crack local to the states. (not sending my DME overseas to be cracked)
No mods on it... I'd expect similar power, not sure the mods do much. Maybe 10-15hp more?

cwhit122 05-01-2022 11:29 AM
Sheesh so my bolt ons would only net me only 10-15 hp vs a stock car running JB4 ��

Mike_L 05-01-2022 01:17 PM
Quote:
Originally Posted by cwhit122 (Post )
Sheesh so my bolt ons would only net me only 10-15 hp vs a stock car running JB4 ��
Thats peak. Some rpms will be higher, some will be lower. BMW didn't leave much on the table with the N63B. The intake and exhaust tracts are pretty free flowing.

cwhit122 05-01-2022 01:24 PM
Gotcha, so to truly see major power improvements would be pure turbos and more fuel options? All I ever seen was getting *** less ********* would net so much HP from the restrictive OEM ones. Maybe that was from a flashed car or combo of both with a jb4 integration. As always thanks for the good replies.

Tomholland 05-01-2022 08:59 PM
Quote:
Originally Posted by cwhit122 (Post )
Gotcha, so to truly see major power improvements would be pure turbos and more fuel options? All I ever seen was getting *** less ********* would net so much HP from the restrictive OEM ones. Maybe that was from a flashed car or combo of both with a jb4 integration. As always thanks for the good replies.
Intakes don’t help much but a ******* down pipe did. It dropped my 0-60 down .2. And that was consistent through multiple runs.

cwhit122 05-02-2022 05:34 AM
Yeah that’s what I thought for DP lol. CAI only for sound anything else is a bonus

Boosted_8 05-06-2022 02:22 PM
Quote:
Originally Posted by Antec800 (Post )
Noticed the same issues doing runs tonight on map 2? Any solution?
My current theory is gearbox torque limiters. Xhp support for the current 8speed ZF boxes is due in the next couple of months. My plan is to settle that asap

Boosted_8 05-06-2022 02:25 PM
Quote:
Originally Posted by zse8h (Post )
BMW finally got around to upgrading my software to 07/2021.20 from 03/2021.40. I noticed immediately how firm the car's stance feels while driving and how smooth the car drove and shifted gears. Testing is with no JB4 as I had to take that off for a visit. But the car feels so much easier to control, and the power on stock felt beefy compared to the previous software. Dare I say it felt like a different car??? Anyhow, this is just my first impression after driving it a few hundred miles on no tune and just a software upgrade.

Fast forward to today, 19 Jul 21. I drove the car a good bit before work on the way to grab some coffee as I wanted to test the car's balance with a new rear sway bar. I want to say this investment is well worth it. It took 1 hour to install, using a lift and making sure my 4-year-old didn't run into the street.

Altogether, it was four bolts and two nuts. The bar itself was tricky to remove once unbolted. The driver-side control arm needed raised an inch to slide the bar out.

I hope this is informative.

Zach
I went for the OEM F90 bars front and rear in the end. I had them fitted with front camber arms and a geo setup. The shop said they went right on with the M5's brackets and a combo of the drop links from both cars.

Tomholland 05-06-2022 03:16 PM
Quote:
Originally Posted by Boosted_8 (Post )
My current theory is gearbox torque limiters. Xhp support for the current 8speed ZF boxes is due in the next couple of months. My plan is to settle that asap
Have you tried turning traction control completely off and not use launch control?

Boosted_8 05-07-2022 01:12 AM
Quote:
Originally Posted by Tomholland (Post )
Have you tried turning traction control completely off and not use launch control?
Yes. That approach is only avoiding the problem because you are not building any boost or using the aggressive shift pattern.

zse8h 05-08-2022 06:24 AM
Quote:
Originally Posted by Boosted_8 (Post )
I went for the OEM F90 bars front and rear in the end. I had them fitted with front camber arms and a geo setup. The shop said they went right on with the M5's brackets and a combo of the drop links from both cars.
This is wonderful news. Do you have aftermarket springs for a 3/4 inch drop? Maybe this will be my next project. How much did the parts cost you?

Another topic, I'm running 102 octane, axel back exhaust, Ca**d Pipes, and JB4 map 2. Today I went from map 1 to 2 and holys...t. i think I need draggy! Don't you run a similar setup? How do your logs look between map1 and 2, with and without pipes? I think Mike' hates map 2 but he doesn't run pipes or 102 octane.

Thoughts??

Boosted_8 05-08-2022 12:35 PM
I genuinely do need the ground clearance and compliance of the M550i suspension, shorter higher rate springs are a no go. With continental sportcontact 7 tyres and lighter forged wheels in place of run flats and the cast iron 668s, the ride is so so good.

Regarding map 2. It never ran right for me. It asks for +6lbs everywhere and even with 101ron (94+2 points of boostaine ) the boost came at the expense of timing and the car was slower. I have the stock primary cats still in, everything else in the OEM exhaust is out of the way.

zse8h 06-22-2022 08:14 AM
Point is
 
Map 2 isn't ready not even for 102 octane we need a flash tune. Truth be told the piggy backs are not ready for this car when we want to produce real power.

Antec800 06-22-2022 03:31 PM
Quote:
Originally Posted by Boosted_8 (Post )
I genuinely do need the ground clearance and compliance of the M550i suspension, shorter higher rate springs are a no go. With continental sportcontact 7 tyres and lighter forged wheels in place of run flats and the cast iron 668s, the ride is so so good.

Regarding map 2. It never ran right for me. It asks for +6lbs everywhere and even with 101ron (94+2 points of boostaine ) the boost came at the expense of timing and the car was slower. I have the stock primary cats still in, everything else in the OEM exhaust is out of the way.
I ran the fastest 60-130 times on custom map 6 settings all 5.5, what’s your newest map 6 boost settings

Pushin' B 06-23-2022 08:19 AM
1 Attachment(s)
Quote:
Originally Posted by Terry BMS (Post )
The fuel limit we're fighting on the JB4 end is with fuel trims. So flashing the ECU would certainly help. As would adding external fuel like WMI or CPI. I don't know where the fuel pressure limit is yet but I'm sure that's well above 600whp.

On the required connectors yes we have them, email me your address and we can send a pair out. Payam is going to make a video on how to attach them to the JB4 harness.
Terry, does this log look a little sketchy? (26lbs was not intended and has not been ran since) Trying to determine safe max boost targets for this platform on an M50i. Currently running a map 6 with 7.5 additive from 4,5 to 5,5K, tapering down to 6 by 6k.

Boosted_8 06-23-2022 08:26 AM
What is your objective? Max boost doesn't equal max performance.

Antec800 06-23-2022 05:06 PM
Quote:
Originally Posted by Pushin' B (Post )
Terry, does this log look a little sketchy? (26lbs was not intended and has not been ran since) Trying to determine safe max boost targets for this platform on an M50i. Currently running a map 6 with 7.5 additive from 4,5 to 5,5K, tapering down to 6 by 6k.
I get **** timing above 6lbs on e25-e30 I can’t imagine what 7psi extra would look like, car probably is just as fast as stock unless you’re on meth or race fuel

Boosted_8 06-28-2022 10:54 AM
It looks a bit like the sweet spots in terms of boost by octane on the Tu3 are starting to be evidenced by the community e.g. +3lbs for 91, +4lbs for 93 +5lbs for 95, +6lbs for 97+ after this the stock turbos just seem to be blowing hot air.

Antec800 06-28-2022 01:49 PM
Quote:
Originally Posted by Pushin' B (Post )
Terry, does this log look a little sketchy? (26lbs was not intended and has not been ran since) Trying to determine safe max boost targets for this platform on an M50i. Currently running a map 6 with 7.5 additive from 4,5 to 5,5K, tapering down to 6 by 6k.
You’re not running 7.5 additive anywhere the highest I see on your logs are 6 at 4.5-5k tapering down to 4 then 2 then 0,0, and I think the highest additive is 7.2 before it switches to absolute anyways

Boosted_8 06-29-2022 12:18 PM
Quote:
Originally Posted by Terry @ BMS (Post )
Was able to get a M550 on the dyno yesterday for a little EWG testing. The good news is we sorted out the connectors. It's pretty easy to "convert" the EWG connection by repinning on a replacement connector.

The bad news, we didn't see any real performance gains with EWG on the platform. Fueling was the limiting factor so unless you're running WMI there isn't going to be much EWG benefit.

Baseline was done on 91 octane, and then map2 without EWG, on 91 and also E20+91 (around 93 octane), for comparison. :burnrubber:
What does a stock M5 running the same fuel make on your Dyno?

Pushin' B 06-29-2022 02:41 PM
Quote:
Originally Posted by Antec800 (Post )
You’re not running 7.5 additive anywhere the highest I see on your logs are 6 at 4.5-5k tapering down to 4 then 2 then 0,0, and I think the highest additive is 7.2 before it switches to absolute anyways
2 things on this:

1. Showing 26lbs and stating I'm no longer running that. The logs are combined and I switched to an absolute mid way through that obviously needs some PID power added to it
2. Stating what I'm currently running in terms of 7.5 requested over

Pushin' B 06-29-2022 02:43 PM
Quote:
Originally Posted by Boosted_8 (Post )
It looks a bit like the sweet spots in terms of boost by octane on the Tu3 are starting to be evidenced by the community e.g. +3lbs for 91, +4lbs for 93 +5lbs for 95, +6lbs for 97+ after this the stock turbos just seem to be blowing hot air.
I would disagree considering I'm running smooth a 18.6lbs at 3,5k ramping up to 29.4lbs by 5,1k while on e30...

Antec800 06-29-2022 02:49 PM
Quote:
Originally Posted by Pushin' B (Post )
I would disagree considering I'm running smooth a 18.6lbs at 3,5k ramping up to 29.4lbs by 5,1k while on e30...
Do you have ewg wires I thought pid isn’t affected without, and what do you mean by more pid power

phaser 07-05-2022 10:47 AM
Sounds like Map 2 is not a good choice at this point. Looks like Map 1 for a novice like me.
Wondering if an E30 mix of 93 oct. and E85 would yield any additional power on Map 1. Has anyone tried that?

Antec800 07-05-2022 03:57 PM
Quote:
Originally Posted by phaser (Post )
Sounds like Map 2 is not a good choice at this point. Looks like Map 1 for a novice like me.
Wondering if an E30 mix of 93 oct. and E85 would yield any additional power on Map 1. Has anyone tried that?
Not on map 1, and not required on map 2, but even on map 2 with 93 octane timing isn’t good without e85/octane booster

Boosted_8 07-06-2022 01:58 AM
Quote:
Originally Posted by Pushin' B (Post )
I would disagree considering I'm running smooth a 18.6lbs at 3,5k ramping up to 29.4lbs by 5,1k while on e30...
I wish you luck in whatever it is you are trying to achieve.

Antec800 07-06-2022 03:19 PM
Terry can you take a look at revising maps for latest gen n63tu3, many people are getting less hp using map 2 without meth or race fuel, and using a e20/e30 mix is causing lean issues at 6 psi,

Terry @ BMS 07-06-2022 03:24 PM
Map2 is the go-to E30 map. Not sure what you mean by "less hp".

Antec800 07-06-2022 03:59 PM
I’m not sure if hp/trq translate to 60-130 times but on map 2, I cannot beat my best times that I got on custom map 6 settings and that’s with e30

Mike_L 07-06-2022 07:23 PM
Quote:
Originally Posted by Terry @ BMS (Post )
Map2 is the go-to E30 map. Not sure what you mean by "less hp".
The cars are slower. A bunch of us found that Map 2 was slower than Map 1, even with 93 based E30. Its not enough octane, timing suffers badly.

Antec800 07-06-2022 07:59 PM
Quote:
Originally Posted by Mike_L (Post )
The cars are slower. A bunch of us found that Map 2 was slower than Map 1, even with 93 based E30. Its not enough octane, timing suffers badly.
That’s exactly what I’m saying countless draggys 60-130 prove slower times on map 2 with e20-e30 mix’s tank after tank

Terry @ BMS 07-07-2022 08:39 AM
Quote:
Originally Posted by Mike_L (Post )
The cars are slower. A bunch of us found that Map 2 was slower than Map 1, even with 93 based E30. Its not enough octane, timing suffers badly.
Wasn't the case in our testing. Post up a 60-130 log on map1 and map2 on the same fuel mix if you want me to look in to it further.

Mike_L 07-07-2022 10:04 AM
Quote:
Originally Posted by Terry @ BMS (Post )
Wasn't the case in our testing. Post up a 60-130 log on map1 and map2 on the same fuel mix if you want me to look in to it further.
He’ll have to do that. I don’t have the 550 anymore. I’m stuck in B58 land now, with 140 less hp. :( But hey, at least it gets double the fuel economy.

Pushin' B 07-07-2022 11:01 AM
Quote:
Originally Posted by Mike_L (Post )
He’ll have to do that. I don’t have the 550 anymore. I’m stuck in B58 land now, with 140 less hp. :( But hey, at least it gets double the fuel economy.
I'll try to get one today. On my 22 M50i, it did not like map 6 at all on 93 or e30. Throttle closure and timing around 4,5K - 5K. I've got another round of e30 in today and will give it another run

Pushin' B 07-07-2022 11:04 AM
Quote:
Originally Posted by Boosted_8 (Post )
I wish you luck in whatever it is you are trying to achieve.
The safest, most amount of boost/power my friend. That or just to watch my car burn..

Antec800 07-08-2022 12:11 AM
Quote:
Originally Posted by Pushin' B (Post )
I'll try to get one today. On my 22 M50i, it did not like map 6 at all on 93 or e30. Throttle closure and timing around 4,5K - 5K. I've got another round of e30 in today and will give it another run
I’ll try to get some this weekend


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