Best way to tune F10 M5

Depot6534 · 04-24-2023, 06:49 PM

Looking for recommendations on installing catless downpipes with a tune. I'm mainly worried about the O2 sensors as I do not want to disable them but I don't want to keep the cel on the dash.

mike@x-ph.com · 04-25-2023, 10:38 AM

With a flash tune, you won't disable the O2 sensors; instead, you'll hide the check engine light (CEL).

That being said, the tune provides the most significant power boost. You could begin with the Bootmod3 to avoid dealing with the CEL and then decide on the downpipes later.

TinCanSailor · 04-25-2023, 10:24 PM

I see that you are in the Dallas area. Hit up the folks at Sales@RKautowerks. They have a lot of experience with the S63TU engine, design and manufacture a lot of performance parts. Rod bearings and rods can be a real heart breaker so consider starting with the inside of the engine before adding power.

I am big fan of Bootmod3. It is an easy to use app, has some off the shelf tunes and have a very customer service centric staff. Just don't go nuts with the power and do oil changes no later than 5k miles.

Welcome to m5post, you'll find a lot of information and a ton of friendly members.

SpeedProtocol · 05-01-2023, 02:16 PM

im still trying to figure out how people get around the yearly inspections in texas with catless downpipes. My understanding is evven with tuning out the CEL it still fails you ?

ndorfn · 05-02-2023, 11:01 AM

use a CATTED DP that has a 200 or 300 CEL CAT. Same as what they do in CA and other states with emissions. Normal CAT has 2000 CEL vs a Race CAT that has 200 or 300 and that is what is used in a CATTED DP. I have CATTED DP and a stage 2 tune that makes 640 on the dyno. More than enough power for me.

04-24-2023, 06:49 PM	#1
Depot6534 New Member 0 Rep 7 Posts Drives: BMW M5 Join Date: Apr 2023 Location: Dallas, Texas iTrader: (0)	Best way to tune F10 M5 Looking for recommendations on installing catless downpipes with a tune. I'm mainly worried about the O2 sensors as I do not want to disable them but I don't want to keep the cel on the dash.
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04-25-2023, 10:38 AM	#2
mike@x-ph.com Joint Chiefs of Staff 24141 Rep 190,706 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	With a flash tune, you won't disable the O2 sensors; instead, you'll hide the check engine light (CEL). That being said, the tune provides the most significant power boost. You could begin with the Bootmod3 to avoid dealing with the CEL and then decide on the downpipes later. __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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04-25-2023, 10:24 PM	#3
TinCanSailor Fueled by Recycled Dinosaurs! 630 Rep 1,171 Posts Drives: F06 M6 Join Date: Dec 2019 Location: 813Bay, Fl iTrader: (2) Garage List 2015 BMW M6 Gran Coupe [9.75]	I see that you are in the Dallas area. Hit up the folks at Sales@RKautowerks. They have a lot of experience with the S63TU engine, design and manufacture a lot of performance parts. Rod bearings and rods can be a real heart breaker so consider starting with the inside of the engine before adding power. I am big fan of Bootmod3. It is an easy to use app, has some off the shelf tunes and have a very customer service centric staff. Just don't go nuts with the power and do oil changes no later than 5k miles. Welcome to m5post, you'll find a lot of information and a ton of friendly members. __________________ 2015 F06 M6 Silverstone Metallic II, Individual Full Leather, B&O, Night Vis, CCB, RKAutowerks (CP Rods/Pistons, DI Cams, CF Intakes, Coated DP's & Billet Diff Brace), InfinityAuto Turbo Inlets, Mishi Oil Cooler, JB4, XHP S3, BM S3
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05-01-2023, 02:16 PM	#4
SpeedProtocol First Lieutenant 374 Rep 315 Posts Drives: '14 F10 M5 - '21 F90 M5 Join Date: Feb 2020 Location: Fort Worth Texas iTrader: (1)	im still trying to figure out how people get around the yearly inspections in texas with catless downpipes. My understanding is evven with tuning out the CEL it still fails you ? __________________ --------------------------- -=SpeedProtocol=- 2014 M5 Sakhir Orange- BPM Stage 1 - Soul Performance Exhaust - PG Intakes - CarboTech 1521 Pads - Turner Monoballs 2021 M5 Motegi Red- Stock
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05-02-2023, 11:01 AM	#5
ndorfn New Member 6 Rep 12 Posts Drives: 2014 BMW M5 Join Date: Mar 2023 Location: Clearwater, FL iTrader: (0) Garage List 2014 BMW M5 [0.00]	use a CATTED DP that has a 200 or 300 CEL CAT. Same as what they do in CA and other states with emissions. Normal CAT has 2000 CEL vs a Race CAT that has 200 or 300 and that is what is used in a CATTED DP. I have CATTED DP and a stage 2 tune that makes 640 on the dyno. More than enough power for me.
	Appreciate 0 Quote