[javier1090]

I have a 2009 335i MT. So I recently put in some stage 2 turbos (dynamic autoworx). Car feels sluggish during pulls. I'm thinking I need another tune?
Mod list
Vrsf downpipes, vrsf relocating inlets. Charge pipe with his bov, recently rebuilt engine. Jb4, stage 2 fuel pump. I'm using 5w-50 oil (recommended by dynamic autoworx) no fault codes. Vacuum lines all new. I did the install myself (everything is good as far as install) I have delpie coils and stock spark plugs (fairly new about 5k miles on em)
I'm hoping I just need a tune? I'm just hoping someone may have had a similar experience.
Engine bay may look like crap for now, tucking wires and all later once car is solid

[Silkyg]

Originally Posted by javier1090

I have a 2009 335i MT. So I recently put in some stage 2 turbos (dynamic autoworx). Car feels sluggish during pulls. I'm thinking I need another tune?
Mod list
Vrsf downpipes, vrsf relocating inlets. Charge pipe with his bov, recently rebuilt engine. Jb4, stage 2 fuel pump. I'm using 5w-50 oil (recommended by dynamic autoworx) no fault codes. Vacuum lines all new. I did the install myself (everything is good as far as install) I have delpie coils and stock spark plugs (fairly new about 5k miles on em)
I'm hoping I just need a tune? I'm just hoping someone may have had a similar experience.
Engine bay may look like crap for now, tucking wires and all later once car is solid

First things first you will need a tune with the new turbos. It's also easier to tell if there's an issue with logs or codes being thrown instead of listing a mods list and how it feels.

[javier1090]

Originally Posted by Silkyg

First things first you will need a tune with the new turbos. It's also easier to tell if there's an issue with logs or codes being thrown instead of listing a mods list and how it feels.

I dont have fault codes, I dont know how to do logs. I guess I'll have to learn. As far as a tune. You recommend mhd or should I suck it up and take it to a tuner

[Silkyg]

Originally Posted by javier1090

I dont have fault codes, I dont know how to do logs. I guess I'll have to learn. As far as a tune. You recommend mhd or should I suck it up and take it to a tuner

You can log on jb4. Do you have it hook to a device ie phone, tablet or computer? What map are you running with jb4? I do recommend running mhd alongside jb4. There are some recommended tuners on here that will send you a custom tune and flash that to your dme. Unless you have a reputable n54 tuner in your area I suggest you reaching out to one of the reputable tuners on here to do a remote tune for you.

[cgbimmer]

I have the same turbos for my car .
I was running mhd 2+ but to get most from them you need custom tune.
I went with bq tuning myself he sends me map and I use mhd to flash.
Then use mhd monitoring and disable dtc on your car and take a few logs running 3rd gear 2500 rpm punch it till at least 6000 rpm for good logs with that I send back to bq and he will revise and modify then send back till it looks good for boost and timing.
I have stage 2 lpfp more boost more fuel still dialing in my tune myself little lag on spool then seems can hold boost till top

[mweisdorfer]

I think you will or should upgrade your coil packs to Eldor & plugs to NKG 2 steps colder .018 gap.

The stock plugs and Delphi coils won't be good / hold much past 525hp.

stage 2 dynamic autoworks turbos are designed for 600 plus HP.

You need outlets & a wedge custom tune through MHD. So, you'd back end flash JB4

Once you get to 600hp, you'll probably need a stage 3 LPFP

What are you doing for your airbox? Cone filters or an upgraded CAI like an AFE momentum etc

[type-dRew]

Are you at least back end flashed for hybrid turbos? There are ots maps for that

If not at least that, of course you need a custom tune

[addictedtoboost]

Originally Posted by javier1090

I have a 2009 335i MT. So I recently put in some stage 2 turbos (dynamic autoworx). Car feels sluggish during pulls. I'm thinking I need another tune?
Mod list
Vrsf downpipes, vrsf relocating inlets. Charge pipe with his bov, recently rebuilt engine. Jb4, stage 2 fuel pump. I'm using 5w-50 oil (recommended by dynamic autoworx) no fault codes. Vacuum lines all new. I did the install myself (everything is good as far as install) I have delpie coils and stock spark plugs (fairly new about 5k miles on em)
I'm hoping I just need a tune? I'm just hoping someone may have had a similar experience.
Engine bay may look like crap for now, tucking wires and all later once car is solid

I would suggest getting a custom tune as I am running the same turbos as you DAW Stage 2s with stock location 2" inlets, fbo, minus jb4. DAW suggested I use Redline 5W40 weight synthetic oil. I am running stock bosch coils let's see how long they last with 2 step colder plugs. I would recommend buying a custom tune from David Shoup or Dr Vu Tuning otherwise known as Phuong Khac Vu on FB. How come DAW suggested you use 50 weight oil? I'm surprised he didn't tell you to run 10W60 oil. A custom tune will bring your car to life! Are you auto or manual?

[dpaul]

Originally Posted by type-dRew

Are you at least back end flashed for hybrid turbos? There are ots maps for that

If not at least that, of course you need a custom tune

+1

For the sake of emphasis: if you have no back end flash at all or are using a flash designed for stock turbos then OF COURSE YOU NEED A CUSTOM TUNE OR AT LEAST THE PROPER BACK END FLASH

[javier1090]

Originally Posted by dpaul

+1

For the sake of emphasis: if you have no back end flash at all or are using a flash designed for stock turbos then OF COURSE YOU NEED A CUSTOM TUNE OR AT LEAST THE PROPER BACK END FLASH

Where do I get a back end flash from?!?!?! I've been doing research and cant find a proper answer, or maybe I just dont under stand? I just bought and gapped those ngk 2 step colder plugs. My car definitely runs smoother, I also found a hybrid turbo map 6 tune. After high boost/4500rpm I get instant loss of power, I'm assuming it's due to lack of back end flash? If anyone can just post a link of where I can get the proper back end flash I would really appreciate it.

[javier1090]

Originally Posted by type-dRew

Are you at least back end flashed for hybrid turbos? There are ots maps for that

If not at least that, of course you need a custom tune

Where? Please post a link, I'm in desperate need!!!

[dpaul]

Originally Posted by javier1090

Where? Please post a link, I'm in desperate need!!!

www.n54tech.com/forums/showthread.php?t=29236

You need to buy MHD flasher. The BB flasher discussed in the linked post requires is free but requires a special $150 cable and more importantly, is no longer supported by the developer and can be glitchy.

FWIW you do not need 2 step colder plugs - a single step colder might be a good idea. Do some reading about what the "hot" or "cold" rating on spark plugs actually means and how you determine what rating to use. It's not magic - it does not add or subtract power or cause a sluggish engine to become peppy

[Rob09msport]

You should stop driving car until you flash you could be eking very lean since stock flash can only add 30 percent more fuel then trims are maxed.

[dpaul]

Originally Posted by Rob09msport

You should stop driving car until you flash you could be eking very lean since stock flash can only add 30 percent more fuel then trims are maxed.

+1, Good advice