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      10-13-2021, 11:08 PM   #1
jakehibbard
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Best Tune For Catless Downpipe

Hello!

I have a 2012 335i (N55) and have a VRSF catless downpipe installed with the rest of exhaust being stock. Also with full bolt ons.

I have purchased a license to tune my car with BootMod3, does anyone have experience with the OTS tunes. If so what tune would work best? My main goals are as follows: remove the CEL due to having a catless downpipe, make more power, and reliability.

I apologize if there is already a thread regarding this, if so please share!!

Thanks all!
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      10-14-2021, 02:11 AM   #2
lucasborka
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Quote:
Originally Posted by jakehibbard View Post
Hello!

I have a 2012 335i (N55) and have a VRSF catless downpipe installed with the rest of exhaust being stock. Also with full bolt ons.

I have purchased a license to tune my car with BootMod3, does anyone have experience with the OTS tunes. If so what tune would work best? My main goals are as follows: remove the CEL due to having a catless downpipe, make more power, and reliability.

I apologize if there is already a thread regarding this, if so please share!!

Thanks all!
Start with stage 2 91octane or 95ron map, you can also edit in the map so that you check the box for another DP. Do you have an intercooler?

Also make some logs, locked in 4th gear and hold dsc button until dsc turns off completely and fullgas from 2500-6500rpm
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      10-14-2021, 09:08 AM   #3
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Select stage 1 with the correct octane you use (91 or 93)

I recommend you get an intercooler and charge pipe and run stage 2 for more power
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      10-14-2021, 10:36 AM   #4
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Quote:
Originally Posted by mike@x-ph.com View Post
Select stage 1 with the correct octane you use (91 or 93)

I recommend you get an intercooler and charge pipe and run stage 2 for more power
op,

Before tuning I would highly suggest purchasing a charge pipe because it will definitely crack once you start raising Boost.


https://mad-us.com/mad-n55-charge-pi...-435-rwd-only/
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      10-14-2021, 10:54 AM   #5
thejeremyman9
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Guys he said "Also with full bolt ons." lol. Not sure why he made the thread about catless DP specifically but that may be due to lack of knowledge (we were there once). OP should indeed confirm he has IC+CP, though.

OP - confirm you have an IC. If so, flash stage 2 91 and datalog.

Read my thread to learn more: https://f30.bimmerpost.com/forums/sh....php?t=1732327

EDIT: sorry if language was aggressive, not intentional. edited to be nice

Last edited by thejeremyman9; 10-14-2021 at 12:56 PM..
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