JB4tech.com - International Turbo Tuning Discussion
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av.auto av.auto is offline
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Car: 2008 135i
Default Turbo Options for Street/Track Duty - 12-31-2021, 03:08 PM

My car is a N54 135i with about 60k miles on it. Prior to my ownership, this car was heavily tracked (think 10-12 track days/races a year), and the wear and tear showed up on the turbos as the seals started to leak. I replaced the cores and rebuilt the wastegates with VTT's OEM replacement CHRA's and their upgraded wastegate kit. Upon the first track day with the new turbos at Buttonwillow (and around 3k street miles), the new cores started smoking heavily, and my front turbo wastegate is stuck... looks like I'm back at square one.

The car is still a street car, with about 5-10k miles a year on average, plus anywhere between 3-4 track days a year. I'm considering options ~$2000, and currently have OEM replacements, Pure600/Stage 1's, RB Ones/Twos, and DAW turbos on my radar. Aftermarket turbos seem interesting as a way to tone down the mid-range torque and pull to redline on track, as well as keeping turbine speeds lower with a conservative boost target. However, my biggest concern is reliability (I plan to have the car tuned fairly conservatively to favor seat time) as I really don't want to be swapping turbos on a regular basis. Wondering if I could get some anecdotes for longevity with aftermarket turbos or advice on what direction I should go. Thanks!

Last edited by av.auto; 12-31-2021 at 03:17 PM..
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ac_schnitzel ac_schnitzel is offline
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Default 12-31-2021, 08:10 PM

For those requirements I think most people would say Pure or RB
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Ripper61 Ripper61 is offline
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Car: 2010 535i M-sport
Default 01-10-2022, 08:31 AM

I've got roughly 15K running RB1's with zero issue. No track days though.


2010 535i M-sport SAT / BMS dci & occ / RB1's, inlets & pcv / VRSF **** / ER fmic & cp w/TialQ bov / N20 tmap / PR stg2 lpfp / B8+H&R sports / OE M6 167's / Motiv-tuned MHD / 467hp&477tq on e30
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Car: 2008 135i
Default 01-10-2022, 03:18 PM

Quote:
Originally Posted by Ripper61
I've got roughly 15K running RB1's with zero issue. No track days though.
Glad to hear it! I'm definitely leaning RB. Been chatting with Rob for the past week to figure out which turbo makes the most sense for me.
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Rule77 Rule77 is offline
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Car: 08 E90 335i
Default 01-24-2022, 09:57 PM

RB Turbo


08 E90 335i - MONTEGO BLUE - JB4/MHD E85 BEF
RB TWOS PLUS - XHP STAGE THREE - ECS CARBON DCI
MOSSELMAN OIL THERMOSTAT
NRW CARBON COWL FILTERS - NRW PADDLES
MMP CHARGEPIPE - TIAL BOV - VTT DUAL OCC
VRSF 7.5 RACE FMIC - VRSF DPs - VRSF INLETS
VRSF OUTLETS - 3.5 BAR TMAP - ELDOR COILS
NGK 97506 @.022 - PFS STAGE 3 LPFP - PFS V2 PI
SPOOL ETHANOL ANALYZER
MISHIMOTO 25 ROW OIL COOLER - H&R SPRINGS
ZIMMERMAN DRILLED ROTORS - EBC REDSTUFF PADS
MISHIMOTO 15 ROW TRANSMISSION COOLER
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Riceball777 Riceball777 is offline
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Car: 2007 e90 335i
Default 01-28-2022, 06:46 PM

i dont track my car but i have over 40,000 miles on my pure stage 2 DD turbos without any issues.


2007 e90 335i
pure stgae 2 DD turbos, rb inlets, bms 4 bar map sensor
Jb4 with mhd hybrid e85 back end flash, vrsf down pipe vrsf 7" intercooler, vrsf charge pipe with tial bov and afe intake. Fuel it stage 2 pump and fuel line/ethanol content kit.
spec stage 2+ clutch with new oem dmfw
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Navykiller Navykiller is offline
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Car: 2011 335is
Default 02-11-2022, 10:15 AM

Rbs and Pures would be the only ones id touch. Since you will be asking a lot of the car at a high pace, definitely better ponying up the extra for a premium one. Stay far far away from ebay, and other ebay rebrand distributers that stamp their name on the housing.
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ProblematicBMW ProblematicBMW is offline
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Car: 2009 E92 335i 17t FBO stage 2 bucketless on 91 OCT ProMOTIVE tune
Default 02-13-2022, 09:58 PM

Quote:
Originally Posted by Navykiller
Rbs and Pures would be the only ones id touch. Since you will be asking a lot of the car at a high pace, definitely better ponying up the extra for a premium one. Stay far far away from ebay, and other ebay rebrand distributers that stamp their name on the housing.
I put in 17T ebays last month, went perfectly fine for me and I drive this thing as hard as I can just about daily.
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ruskiracer ruskiracer is offline
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Car: e93 335i
Default 02-14-2022, 03:37 AM

Single turbo 6262


Manual swapped e93, single turbo precision 6875
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Navykiller Navykiller is offline
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Car: 2011 335is
Default 02-14-2022, 07:20 AM

Quote:
Originally Posted by ProblematicBMW
I put in 17T ebays last month, went perfectly fine for me and I drive this thing as hard as I can just about daily.
And Im glad its working for you, but we both know their rate of failure to success, especially long term, is almost a 50/50. If they work, you got a steal for performance, if they dont, you lost a chunk of change.
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Torgus Torgus is offline
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Car: 335xi
Default 02-26-2022, 01:17 PM

VTT strikes again! Better off gambling on China cast turbos.


E92 ACF 6466 + AM Meth / E70 #1 / E70 #2 JBD

Got Boost?
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WayneRT WayneRT is offline
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Car: BMW N54
Default 03-02-2022, 09:23 PM

Quote:
Originally Posted by Ripper61
I've got roughly 15K running RB1's with zero issue. No track days though.
Great to hear RB1 is a reliable turbo. A friend is looking to get this for his N54 135i project. Got to finish installing the bumper and jeep tops on the Wrangler before we can clear the garage.
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