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Author Topic: F21T needed changes  (Read 311 times)
totti
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« on: February 13, 2020, 02:18:06 AM »

Hi,

I would like to change my K03s turbo with that https://www.ebay.com/itm/New-Billet-6-6-F21T-Turbocharger-for-Audi-A3-TT-Skoda-Octavia-1-8T-AUM-AUQ-ARY/362738416441?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3Db94ce851c35a46f4813eb0e314da4b42%26pid%3D100675%26rk%3D1%26rkt%3D15%26mehot%3Dnone%26sd%3D362738416441%26itm%3D362738416441%26pmt%3D0%26noa%3D1%26pg%3D2380057&_trksid=p2380057.c100675.m4236&_trkparms=pageci%3A4bcf4e4c-4e3d-11ea-8bec-74dbd1801005%7Cparentrq%3A3dba2b811700ad31c40ff45effdb9316%7Ciid%3A1

This is the current setup of my car http://nefariousmotorsports.com/forum/index.php?topic=17106.0title=

I will decrease the requested boost to max 1.2 bar. My question is if I change ldrxn should I change parallel kfmirl and kfmiop too?
Other thing is how to do the WG linearization? I know how to fix the dutycycle, but I fear that with 80% and above there will be too much boost.
My mechanicar said that bigger maf housing should be good to this setup. Can I use BAM maf housing and copy the values from an original software?

Thank you
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aef
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« Reply #1 on: February 13, 2020, 05:42:26 AM »

yes
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totti
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« Reply #2 on: February 13, 2020, 07:01:45 AM »

yes

Thanks. Do you have any tip for the WG linearization?
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pocoloco
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« Reply #3 on: February 13, 2020, 04:49:00 PM »

no idea why use a bigger maf housing, but linearization i would drive out the old way.

open loop, testing and gettin closer and closer..
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aef
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« Reply #4 on: February 14, 2020, 03:03:06 AM »

Thanks. Do you have any tip for the WG linearization?

my "yes" was more or less a joke.
All of your questions are answered here in the board.

by the time you spend here you should know how to do
http://nefariousmotorsports.com/forum/index.php?action=profile;u=17897;sa=statPanel
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RBPE
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« Reply #5 on: February 14, 2020, 03:56:08 AM »

F21's are a lot more than that - you'll want to be running less boost than that if you're going to run that turbo for any length of time - keeping it to a bar or less of boost tended to get us 5-10k miles or about a few weeks @1.3-1.4bar on all these various cheaper billet ones we tried.
Not sure of any benefit of the compressor wheel save for weight if there's no info on reprofiling and extended tip air flow testing - therefore I'd probably get a billet wheel on it's own (I used to deal in bulk so they were about £30-35 each for me but you'll be looking at prob £70-140 for one currency and supplier dep). OEM Borg-Warner re-build kit - check fitment for any light porting/chamfering work when adding the wheel and have a local company balance it all. Prob about same price plus you keep gen BW parts - just my 2p.

You prob want to sort the tune out better too, those are low figures for your mods & boost - my base map @15psi got those figures on a stock AUQ with induction with very mild changes, 230ps/356nm @ 1.1bar, very little to no ig ret even after spirited driving etc
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