[kko1982]

Two months ago I bought 2017 340xi and in one month my car will arrive in my country. I had E90 335xi before on pure Hiflow it takes 1/4mile for 10.8sec.
Now I must prepare all the tuning parts for my new car... and I hope to hit 10 sec.
It will first b58 tuning project in my country, there is no experience with these new motors. And yes I understand that basic working rules are the same for every motor, but I want to do everything as well as possible at once. Therefore I need your advice guys...

1. Turbo - docrace with EFR9180 or EFR9280? What will be the difference in the spool between them?
2. HPFP will be Dorch stage 2 - selected
3. PI kit from Fuel-It is ok?
4. Front Heat Exchanger CSF V2. Is there a better solution? - I haven't decided yet if this is necessary
5. Are there any better intake intercooler on the market? - I haven't decided yet if this is necessary
6. Do you know anyone who successfully swapped 8hp51 to 8hp7x AWD?
7. Any experience with https://www.puredrivetrainsolutions.com/
8. LPFP Helcat 535 is it ok?
9. JB4 + MHD backendFlash is this a modern solution? - not selected. Will be custom tune

was added 09.12.21:
10. Build the motor. Head studs, forged rods, pistons, and bearings?
11. Spark plugs... Any suggestions?

I will post all buying and tuning processes on this topic.

09.12.21 - I started choosing tuning parts

[weehe126]

That's a rather long, but good list. Is the goal to hit only 10s or 9s? Seems 10s are a a lot easier to hit in this car and can be done with just a GC or Pure800 turbo. Here are my thoughts.
1. You will need a built engine to use either of those turbos. Is your goal 800-1000hp?
2. Dorch stage 2 will be good.
3. Depends on how much hp you are going for.
4. That's really the only one, maybe there is a Chinese knock off equivalent.
5. There is a full replacement intake manifold with upgraded cooler but costs something like $4000
6. Can't answer
7. If you have the money it is a good option
8. Only needed if you add PI
9. No real reason to use JB4, just get a custom flash tune.

[Lego864]

If your goal is only to be in the 10s you can easily do that with a hybrid turbo for cheaper (pure800/850, daw v2.5, GC+) and DI only. Or if your looking for quicker than mid to low 10s a full frame turbo like Doc Race or Big Boost is the way to go. Big Boost will perform slightly better than Doc Race with all things being equal just because Big Boost is a bottom mount vs Doc Race top mount setup. Big Boost is also a little cheaper too. There's no denying the top mount has more of a "bling" factor though.

1. I would personally only go with one of the newer black series EFR turbos (8474, 9274, 9280). They flow alot more compared to the older standard EFR turbos(8374, 9174, 9180) with only a small sacrifice to spool. I just bought a Big Boost turbo kit with the EFR 9274 since im aiming for ~850whp and wanted a little quicker spool than the 9280. But either way can't go wrong with any of the EFR black series.
2. Dorch stage 2 is great. Will allow for ~650whp on e30-e50 mix and would be into the 10s with DI only.
3. Any of the PI kits seem to be pretty decent so far. But they're still fairly new. Just highly recommend a Motiv Reflex controller over any of the other controllers and a set of ID1050X injectors.
4. CSF is a good one and what i would go with. Heat exchanger is really only going to be beneficial if youre road racing, auto-x, or highway racing as its not going to do quite as much for 1/8 or 1/4 mile.
5. There are a couple in beta testing phase but haven't seen any release to the public for the f-chassis yet. They're expensive but they also come with PI. There are also 1 or 2 that block the oil filter so just make sure you get one that you don't have to remove for an oil change.
6. I have heard you might have to modify the front driveshaft length for xdrive hp70 swap but haven't seen it done on xdrive yet.
7. PDS looks like the best plug and play option for xdrive right now but xdrive hp70 kit is in the works right now by Trevor Elam at bimmerboiperformance.
8. I would go with one of the plug and play versions that use the 450. That plus oem is plenty for 850-1000whp on ethanol mix depending on which options you get with it (FPR, Return style).
9. No benefit to stacking JB4 anymore. Just contact your tuner of choice and see which platform they prefer and use a custom tune (BM3, MHD, MG Flasher)

I would also be prepared to build the motor if your going to go above 650-700whp.

[blacksapphire440i]

Originally Posted by Lego864

If your goal is only to be in the 10s you can easily do that with a hybrid turbo for cheaper (pure800/850, daw v2.5, GC+) and DI only. Or if your looking for quicker than mid to low 10s a full frame turbo like Doc Race or Big Boost is the way to go. Big Boost will perform slightly better than Doc Race with all things being equal just because Big Boost is a bottom mount vs Doc Race top mount setup. There's no denying the top mount has more of a "bling" factor though. Big Boost is also a little cheaper too.

1. I would personally only go with one of the newer black series EFR turbos (8474, 9274, 9280). They flow alot more compared to the older standard EFR turbos(8374, 9174, 9180) with only a small sacrifice to spool. I just bought a Big Boost turbo kit with the EFR 9274 since im aiming for ~850whp and wanted a little quicker spool than the 9280. But either way can't go wrong with any of the EFR black series.
2. Dorch stage 2 is great. Will allow for ~650whp on e30-e50 mix and would be into the 10s with DI only.
3. Any of the PI kits seem to be pretty decent so far. But they're still fairly new. Just highly recommend a Motiv Reflex controller over any of the other controllers and a set of ID1050X injectors.
4. CSF is a good one and what i would go with. Its really only going to be beneficial if your road racing, auto-x, or highway racing as its not going to do quite as much for 1/8 or 1/4 mile.
5. There are a couple in beta testing phase but haven't seen any release to the public for the f-chassis yet. They're expensive but they also come with PI. There are also 1 or 2 that block the oil filter so just make sure you get one that you don't have to remove for an oil change.
6. I have heard you might have to modify the front driveshaft length for xdrive hp70 swap but haven't seen it done on xdrive yet.
7. PDS looks like the best plug and play option for xdrive right now but xdrive hp70 kit is in the works right now by Trevor Elam at bimmerboiperformance.
8. I would go with one of the plug and play versions that use the 450. That plus oem is plenty for 850-1000whp on ethanol mix depending on which options you get with it (FPR, Return style).
9. No benefit to stacking JB4 anymore. Just contact your tuner of choice and see which platform they prefer and use a custom tune (BM3, MHD, MG Flasher)

I would also be prepared to build the motor if your going to go above 650-700whp.

Hey Lego, I am very curious on certain upgrades I want to do on my b58 and judging from your knowledge, I would like your opinion.

Currently I'm running a vrsf downpipe, mst intake, Valvetronic Designs exhaust (fully decatted) with a bm3 custom tune (stage 2 making 470ishwhp) from F80Paul with the xHP stage 3 tranny tune.

I am aiming for a more conservative way to reach 500whp-550whp without sacrificing any daily driving reliability.

Would these upgrades be the best way to achieve my goals?
A) Pure 800s or Pure 850s (when stock turbo dies)
B) Dorch Stage 2 HPFP or B58TU HPFP (leaning towards dorch)
C) CSF Heat Exchanger

[Lego864]

Originally Posted by blacksapphire440i

Hey Lego, I am very curious on certain upgrades I want to do on my b58 and judging from your knowledge, I would like your opinion.

Currently I'm running a vrsf downpipe, mst intake, Valvetronic Designs exhaust (fully decatted) with a bm3 custom tune (stage 2 making 470ishwhp) from F80Paul with the xHP stage 3 tranny tune.

I am aiming for a more conservative way to reach 500whp-550whp without sacrificing any daily driving reliability.

Would these upgrades be the best way to achieve my goals?
A) Pure 800s or Pure 850s (when stock turbo dies)
B) Dorch Stage 2 HPFP or B58TU HPFP (leaning towards dorch)
C) CSF Heat Exchanger

If you're 100% sure you're not going to want more than ~600whp, Pure800 or DAW v2.5 would be my go to.

But if there is any doubt that you might want more than that, then go straight to a full frame (Big Boost or Doc Race). I personally wish i would have went with a full frame turbo kit from the beginning. My Pure800 hits full boost around 3200 RPM. An EFR 8474 should be around 3500RPM but have higher hp potential and better transient response than a hybrid.

I would also go with the Dorch stage 2 or fx-150/fx-180 so you have plenty of fuel to meet your 550whp goal.

Heat exchanger would be nice but IMO its not really worth it at 500-550whp. The cost to benefit isn't really there unless you plan to road race or auto-x. Just add some water wetter and take off the engine cover in the summer otherwise.

[kko1982]

Originally Posted by Lego864

.....
I would also be prepared to build the motor if your going to go above 650-700whp.

Thank you for the information about Trevor Elam and bimmerboiperformance. I contacted Trevor and he is a very nice guy! I think I will do the swap on 8HP70 )))
You are right!
I must replace rods, pistons, and bearings. Is it correct?
Can you please advise any brands? CP-CARRILLO forged?

Question about JB4 + MHD vs custom tune:
on my previous E90 I used JB4 + MHD BEF. I can switch maps from the steering wheel. When I want to race I used map 6 (BEF + WMI 28psi target), when I did not want to race I used map 5 (automap on pump gas without WMI only 19 +-2 psi). Does custom tune do the same things?
BEF makes David trebilla and he can do only BEF.... with JB4

[blacksapphire440i]

Originally Posted by Lego864

If you're 100% sure you're not going to want more than ~600whp, Pure800 or DAW v2.5 would be my go to.

But if there is any doubt that you might want more than that, then go straight to a full frame (Big Boost or Doc Race). I personally wish i would have went with a full frame turbo kit from the beginning. My Pure800 hits full boost around 3200 RPM. An EFR 8474 should be around 3500RPM but have higher hp potential and better transient response than a hybrid.

I would also go with the Dorch stage 2 or fx-150/fx-180 so you have plenty of fuel to meet your 550whp goal.

Heat exchanger would be nice but IMO its not really worth it at 500-550whp. The cost to benefit isn't really there unless you plan to road race or auto-x. Just add some water wetter and take off the engine cover in the summer otherwise.

Yea I'll go with the pure800s solely because I don't plan on going beyond the 600whp range. I believe that is when you need to plan for a tranny rebuild (?) and an upgraded intake manifold? Still would rather hit reliable whp gains without having to strain the motor too much.

Edit: whats your thought on the DA Turbo?

[Glemm1970]

Originally Posted by kko1982

Thank you for the information about Trevor Elam and bimmerboiperformance. I contacted Trevor and he is a very nice guy! I think I will do the swap on 8HP70 )))
You are right!
I must replace rods, pistons, and bearings. Is it correct?
Can you please advise any brands? CP-CARRILLO forged?

Question about JB4 + MHD vs custom tune:
on my previous E90 I used JB4 + MHD BEF. I can switch maps from the steering wheel. When I want to race I used map 6 (BEF + WMI 28psi target), when I did not want to race I used map 5 (automap on pump gas without WMI only 19 +-2 psi). Does custom tune do the same things?
BEF makes David trebilla and he can do only BEF.... with JB4

Pure 800 27psi E50/WMI 2/CM7 = 620whp.
Or WMI port 6 / CM3 + 1 / CM10, then 650 / 670whp at 28 / 29psi.

Stock engine. All you need is HP70, sport springs, 17 wheels if you want maximum straight line acceleration. 1/4 stable 10.2 / 10.3s.

[kko1982]

Originally Posted by Lego864

.... I just bought a Big Boost turbo kit with the EFR 9274 since im aiming for ~850whp and wanted a little quicker spool than the 9280....

I double checked bigboost website and i cant find options with EFR 9274, only 8374, 8474, 9174 and 9280
Where i can find them?

[kern417]

Confirm your goals and that will give you a direction.

10s is pretty simple on an xdrive car. Some people are hitting it on stock turbo, but to make it easy you can get a hybrid. Then you'll either want a Dorch HPFP and an ethanol tune, or a meth injection kit and a meth tune.

If you're going full send then that's different. I do not recommend a 9180 or 9280 unless you are building your cylinder head. They spool late and make power past 7000rpm. You should build your engine if you're targetting over 750hp, but of course those turbos can be dialed down to be safe until you're ready to build the engine. An intake manifold upgrade is recommended because higher boost levels tends to crack the stock plastic manifold, and then pairing it with a heat exchanger will complete the system for optimal IAT management. The HP70 can be adapted to xdrive with some custom components, but a pure transmission will be bolt on, hold more power, and shift faster.

You're referencing other parts that aren't for the b58 like fuel it PI and the hellcat lpfp. There are b58 specific options if you search around.