[SEI]

As the title reads,

Considering doing these.. Anyone done turbo upgrades on their 35i?

Ive done jb4 stage 2, BMS intakes, metal charge pipes, catlless Downpipe and mid pipe but still looking for more power. Anyone got dyno numbers or experience?

[hardparker]

I've considered it for the future, but I just picked up my X3, so it's down the road.

How has your experience been with the JB4? Does map switching work on the X3 from CANBUS?

I'm not sure at what point the fueling needs upgrading for a larger turbo. I know that HPFP has a limit at some point, but it's probably in the 500+ whp range.

[Stück]

I have the Pure Stage 2 turbo unit on my F10 535i. Should be the same deal on the F25.

500+whp isn't going to happen on pump 93, and the amount of E85 blend required to push the octane high enough will cause the HPFP to crash (run out of headroom)

500whp/tq is possible with a port injection setup and E30 blend. If you run straight E85 I have customers pushing 600whp/tq on the F30 N55 platform but that is failure point on the bottom end.

[Stück]

Another consideration is the transmission, which ZF rates at 450nm of input torque.

500wtq is roughly 770nm of input torque on the 8HP45 trans, under further stress/load from the AWD platform.

[Glowin]

Originally Posted by SEI

As the title reads,

Considering doing these.. Anyone done turbo upgrades on their 35i?

Ive done jb4 stage 2, BMS intakes, metal charge pipes, catlless Downpipe and mid pipe but still looking for more power. Anyone got dyno numbers or experience?

How did you install a JB4 stage 2? It's not supported for the X3?

http://www.burgertuning.com/N55_JB4_...BMW_tuner.html

Only the JB Stage 1 is:

http://www.burgertuning.com/stage_1_...ce_tuners.html


About a year and a half ago, when I was considering a tune myself, I even confirmed it with them when I asked:

Why is the JB4 not available for the X3? It's there for so many other current model cars running N55 engines?

And was told:

ECU compatibility. Different ECU in the X3.

[hardparker]

Numerous X3 folks seem to be running the JB4. Seems like CANBUS map interface via the stalk and tach may not work, but you can get around that with the Bluetooth interface.

As far as the torque limitations of the transmission, let's break one first and see what needs upgrading. The 8HP platform is pretty modular and supports up to 900 Nm, or 663 lb-ft of torque. I suspect the 8HP45 could be relatively easily upgraded. I've done that type of thing before: http://legacygt.com/forums/showpost....&postcount=129 The weak link on the 5EAT ended up being the center diff input gear strength. Looks like the 8HP45 on the X3 uses a large gear output from the side. Seems decently beefy, with good sized teeth. I don't foresee it being the weak link at least.

Anyhow, with the bootmod3 available for OBD flash tuning, I'm far more interested in big turbo options. Stage 2 would feel pretty nice on one of these, I'd guess.

[alpwhite46]

You can do JB stage 1 on x3

[FSociety]

Guys who are thinking of running JB4 on their X3 please go dyno your car before and after (preferably) so you can see the results on the delta (Gains) dont look at peak numbers as you just want to see what your car is gaining. I know 1 particular X3 35i (PWG) who is FBO wasnt happy with the jb4 results so added BMS Meth kit and now went back to Dyno and the gains/results/difference were sad to say.
http://www.n54tech.com/forums/showthread.php?t=45131

Wish all the JB4 X3 guys would invest in a dyno session it would help them and the other followers so much. (ButtDyno is a Lie)

Originally Posted by Stück

500+whp isn't going to happen on pump 93, and the amount of E85 blend required to push the octane high enough will cause the HPFP to crash (run out of headroom)

500whp/tq is possible with a port injection setup and E30 blend. If you run straight E85 I have customers pushing 600whp/tq on the F30 N55 platform but that is failure point on the bottom end.

We already seen over 436whp 565wtq on 93 octane so you're incorrect- Thanks to Bootmod3 (EWG M2 DCT N55) but yes you're correct 500whp wont happen without Meth/Direct Injection Meth or Port Injection/E85.

[hardparker]

My biggest concern for going with something like a Pure Stage 2 would be fueling considerations. I'd ideally like to have something that will run well, if at reduced performance, on 91 octane pump gas and no additional fueling whatsoever. What does that net? 400-450 whp with that size turbo and FBO?

Why won't something like the Vargas Double Barrel setup work? It notes N55 2011 (PWG?) only. That would be a reasonable setup. Secondary accessory belt overdriven HPFP. Great!

I've run WMI setups on numerous cars in the past, and while it does work wonders, I want something that involves minimal use changes. No making sure the methanol tank is topped off and flowing optimally. No mixing E85. I don't want to hear my wife telling me, "Honey, I ran your car out of windshield washer fluid, and the motor blew up." I know there are safeguards available, but I'd prefer a safer, if slightly less powerful setup, for most occasions.

Additionally, I want to have the option of different tunes to accompany fueling additions like those listed above. I'm not sure the BM3 has map switching without OBD2 connected. If not, feature request submitted!

So, what, JB4 on top of BM3, then? Perhaps acceptable. Otherwise, reflashes with alternate tunes via BM3 for days when the tanks are topped off with the good stuff, I guess.

[FSociety]

Originally Posted by hardparker

My biggest concern for going with something like a Pure Stage 2 would be fueling considerations. I'd ideally like to have something that will run well, if at reduced performance, on 91 octane pump gas and no additional fueling whatsoever. What does that net? 400-450 whp with that size turbo and FBO?

Why won't something like the Vargas Double Barrel setup work? It notes N55 2011 (PWG?) only. That would be a reasonable setup. Secondary accessory belt overdriven HPFP. Great!

I've run WMI setups on numerous cars in the past, and while it does work wonders, I want something that involves minimal use changes. No making sure the methanol tank is topped off and flowing optimally. No mixing E85. I don't want to hear my wife telling me, "Honey, I ran your car out of windshield washer fluid, and the motor blew up." I know there are safeguards available, but I'd prefer a safer, if slightly less powerful setup, for most occasions.

Additionally, I want to have the option of different tunes to accompany fueling additions like those listed above. I'm not sure the BM3 has map switching without OBD2 connected. If not, feature request submitted!

So, what, JB4 on top of BM3, then? Perhaps acceptable. Otherwise, reflashes with alternate tunes via BM3 for days when the tanks are topped off with the good stuff, I guess.

Other options are like SpeedTech who's offering a Stg3 kit (can be run on low boost and not maxed out like most ppl are running PS2)

PS2 can be run on 93 or even e85 blends w/o additional fueling. Of course to max out the upgraded turbo Meth or Port Injection(E85) is absolutely a requirement.

I haven't seen anyone run 400whp on 91 yet but I've recently seen 436whp/565wtq on 93 (91+boostane) by Norcalmav23 on his M2 w/ PS2 & BM3 Flash.

Furthermore, a 335 ran 446whp/570wtq on BM3 flash with Meth stock turbos. Nobody in the Fxx BMW uses windshield washer fluid tank for Meth too risky.

BM3 is the only flash that allows you to have 1 or any maps, all you need is the $20 ENET to OBD2 Cable and either Free iOS app, Free Android App or even via your laptop open up Chrome and services.bootmod3.net Modern JB4 plugs into the obd2 port but for us a Bluetooth kit ($140+ more $30 JB4 Mobile app) is needed (F25/F26 cannot use the dash to switch jb4 maps like you can with F3x models).

A BM3 flash takes 1min 25s, this is prob going to improve without having the need to be connected to the Cloud and instead stored in your local device (maybe).
http://f30.bimmerpost.com/forums/sho....php?t=1321857

[SEI]

Originally Posted by hardparker

I've considered it for the future, but I just picked up my X3, so it's down the road.

How has your experience been with the JB4? Does map switching work on the X3 from CANBUS?

I'm not sure at what point the fueling needs upgrading for a larger turbo. I know that HPFP has a limit at some point, but it's probably in the 500+ whp range.

jb4 has been great really cool with the bluetooth module can see all the parameters. it has a custom flash +jb4 together so not sure what made it good. but i had stage 1 before kept throwing drivetrain error. after that i switched to racechip that didnt throw any drivetrain error but felt like it had alot more power when half throttle but didnt do anything when wot.

i havent tried to switch maps yet. my tuner said dont change maps till we get the meth installed.

[SEI]

didnt get to dyno it stock. but this is with jb4,flash tune, charge pipes. downpipe, mid pipe. all catless

[FSociety]

Means absolutely nothing if you can't provide a map0/4 dyno as well, peak numbers mean nothing without a delta.

[SEI]

Originally Posted by FSociety

Means absolutely nothing if you can't provide a map0/4 dyno as well, peak numbers mean nothing without a delta.

I'm not here to prove anything to anyone you were the one who wanted a dyno. All I asked was if anyone has done turbo upgrades. An x5 has done it and I'm gonna do aswell. That's the end of this thread really.

Thanks to the rest for the input

[FSociety]

Originally Posted by SEI

I'm not here to prove anything to anyone you were the one who wanted a dyno. All I asked was if anyone has done turbo upgrades. An x5 has done it and I'm gonna do aswell. That's the end of this thread really.

Thanks to the rest for the input

Hey don't take it the wrong way, just meant before its good to do a before (flash) or same day map4 (after your jb4 runs). Also, 1 result of the dyno run doesn't help show if the tune is good or consistent either. This is not to prove anyone anything but yourself. A dyno is a tool to measure your gains nobody else because each car is different due to their location/weather/octane in your state/country and mods.

[hardparker]

Bumping this thread since I just purchased Pure Stage 2 for my X3. That and an Ultimate Racing catted downpipe, just to not have to worry about passing visual inspection, when the time comes.

I'm going to run it on the stock fuel system for now, with 91 and often E85 mixed up to E40 or so with a tune through PTF. I'm thinking something custom tailored to my mile high elevation would be nice.

Eventually, I'll upgrade to a port injection setup for a 500+whp daily driver. In the meantime, I'll be adding a WMI setup to supplement my shitty Phoenix intercooler, more for charge cooling than for the additional fueling, since I'll simply be running windshield washer fluid in whatever the highest concentrations I can get, rather than dicking around with mixing methanol like I did in the past.

[E90705]

Looking forward to your ps2 Install

[FSociety]

hardparker how are you going to measure each power level / difference ?
via 1/4 mile or dyno ?

[hardparker]

Originally Posted by FSociety

hardparker how are you going to measure each power level / difference ?
via 1/4 mile or dyno ?

With big smiles and lots of "Oh, shit!"s.

I've debated doing a baseline dyno. I probably will, but since I have the stock downpipe still in and I'm at a mile high altitude, I suspect it will be disappointing, which is not a big motivator. Still, it would be interesting for comparison's sake, so I may do it.

If I do, I'll be on E30, most likely, and will try to get pulls for stock, OTS stage 1 and then the OTS E30 map. I may do the OTS E30 Stage 2 map with the stock cat, just to see what it does.

Post install pulls will likely be after custom tuning for my altitude on the stock fuel system. Only fueling upgrade initially will be a Walbro 450. Dyno runs will probably be an OTS map, custom map, and custom map with low methanol content WMI mix.

Since I'm down about 2 psi at this height, I hope to make up for it in the tune. The lesser air density gets me a little more headroom on the stock fuel system in terms of how much boost I can run. I'm thinking I might be able to do 18-19 psi on stock fuel system here. It won't net any more power than 2 psi less at sea level would, but at least I won't down on power like it would be otherwise.

[hardparker]

I went and did some baseline dynos today before my Pure Stage 2 install. Car is a PWG 2014 X3 35i with BM3 stage 1 v3 flashes, Phoenix FMIC, FTP charge pipes, aFe Pro DRY S filter and running about E30-E35 for fuel. Dyno was a Land and Sea DYNOmite at 5280 feet of altitude.

Best run was on a BM3 93 octane OTS stage 1 map at 358 whp and 458 wtq. Gotta love that ethanol torque! The stock flash hated the E30 mix with no learning under its belt and was throttle closing with lean AFRs. I ended up with pics of the graphs emailed to me, rather than the run files. I'll try to drop by and get those later.

Also, I datalogged during the pulls. Timing of datalogs and dyno operator were a little off, so most of the logs start somewhat into the run.


BM3 OTS Stage 1 93 octane map w/E30 - 358 whp, 458 wtq

BM3 log of the run - http://www.bootmod3.net/log?id=5a3d4aa5d10b4307dadd6a81



BM3 OTS Stage 1 91 octane map w/E30 - 354 whp, 452 wtq

BM3 log - http://www.bootmod3.net/log?id=5a3d4c3cd10b4307dadd6a86



Stock X3 35i map w/E30 - 324 whp & ~350 wtq with throttle closure and not learned to E30 trims due to reflash moments before dyno

BM3 log barely caught the end of the run - http://www.bootmod3.net/log?id=5a3d4e65d10b4307dadd6a8b

[FSociety]

hardparker thanks for this and congrats! its time to step into the new OTS Stg2 you will see the huge difference!

[Lotus99]

Originally Posted by hardparker

Stock X3 35i map w/E30 - 324 whp & ~350 wtq with throttle closure and not learned to E30 trims due to reflash moments before dyno

First off, It's amazing What you are doing. The first seriously modded X3 on here!

I'm confused though by the so-called stock baseline dyno. How is it possible, with no tune, to get 324 WHP? And I'm guessing you must be running a tune if you're dynoing on E30, first of all.

A stock X3 with 15% loss would put out somewhere around 260 WHP I would expect.