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drdiabetes drdiabetes is offline
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Car: bmw 335i e92 AT
Default 335i AT 6HP21 upgrades? - 01-10-2021, 06:38 AM

Hi, I wonder if there is any upgrade for Automatic transmision zf 6hp21 for +700whp.

There are some AT guys doing under 5seg 100-200kmh..with aparently no issues.. how do they hold that power??

Level 10 didn't work
Nizpro give up with their development. Anyone knows why?
Anyone runing propulsive dynamics?? I saw that know precision raceworks send the kit.

I don't want manual swap or dct.


335i AT 2008
DOC RACE 6466 SINGLE TURBO
JB4 G5ISO + MHD TUNING
FUEL IT PI kit BMS controlled
FUEL IT STAGE 4 LPFP
XHP flash stage 3
VRSF RACE EXHAUST
VRSF 7.5 FMIC
NGK SPARKS TWO STEPS COLDER

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nyt nyt is offline
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Default 01-10-2021, 08:05 AM

see my thread here.

Basically, clutches, zip kit, and nizpro shafts.

DIY - 335IX built motor/trans single turbo build | SpoolStreet Forums

There are also 6hp28 adapters about to hit market


2010 335ix - speedtech 6466g2, cams, ported head, built bottom end, 7.5in hd ic, jb4, pi, fuel-it stg3, upgraded 6hp21+cooler, pr coils
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ruskiracer ruskiracer is offline
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Default 01-10-2021, 08:58 AM

Your most economical bet would be switching to the 6hp28 with the adapter . Running 700 whp and trying to bring the torque in a little later and not it hitting so hard is gonna be your best bet
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iqraceworks iqraceworks is offline
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Default 01-15-2021, 11:31 AM

I've heard talk of adapters....but is anything out on the market yet? I'm having a hard time trying to justify putting a bunch of money into a 6HP21 and hope it holds together........


2007 335i, BMS DCI, BMS Chargepipe w/Tial BOV, ARM Down-p1pes, Bilstein B12 Prokit Suspension,G-Plus FMIC, MHD Stage 2+ tune, xHP stage 3 transmission flash.
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nyt nyt is offline
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Default 01-15-2021, 05:12 PM

Quote:
Originally Posted by iqraceworks
I've heard talk of adapters....but is anything out on the market yet? I'm having a hard time trying to justify putting a bunch of money into a 6HP21 and hope it holds together........
Looks like this is the closest to market.

PROMO - Guru Autowerks - ZF 6HP26/28 Transmission Adapter | SpoolStreet Forums


2010 335ix - speedtech 6466g2, cams, ported head, built bottom end, 7.5in hd ic, jb4, pi, fuel-it stg3, upgraded 6hp21+cooler, pr coils
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