S mode vs Dynamic

2.9 V6 24v TFSI - 444 bhp
Markp
5th Gear
Posts: 1117
Joined: Sun Sep 13, 2015 10:47 pm

Re: S mode vs Dynamic

Post by Markp » Wed Aug 15, 2018 10:11 pm

MikeFish wrote:
Wed Aug 15, 2018 3:32 pm
Markp wrote:
Wed Aug 15, 2018 1:43 pm
RS4 Owner wrote:
Mon Aug 13, 2018 3:27 pm

Presumably you mean the cold start.
Ask a coder for a "cold start delete". Certainly could be removed on the M3. Though I have not heard of many people doing much coding on the RS4 or 5.
The cold start is usually OK with the standard exhaust but it can be obscenely loud with some aftermarket exhausts hence some people have it deleted it as it's just an emissions thing.
Mine does it whether hot or cold. Embarrassing at times.
Is it cold start or choke? When you normally start the car cold it will be in a cold start mode and have some choke. The choke has a higher idle. Normally the choke will go back to normal and revs drop but the car is still loud due to the cold start mode.
I wouldn't expect either if these on a warm car though.
Any start. It barks and revs like I have blipped the throttle. Fine at Castle Combe but a bit OTT at the vicarage :shock:

User avatar
RS Owner
3rd Gear
Posts: 451
Joined: Sun Aug 17, 2008 3:12 pm

Re: S mode vs Dynamic

Post by RS Owner » Wed Aug 15, 2018 11:07 pm

I think catalytic converters run at about 500 degrees C so the car doesn't have to be stopped for very long before the cat goes 'cold'.
Last edited by RS Owner on Wed Aug 15, 2018 11:11 pm, edited 1 time in total.
Current : 2018 F5 RS5 (Let's Fire Up the Quattro)
Gone : 2017 M3 CP
Gone : 2007 B7 RS4 ( :kissmyrings: )

User avatar
RS Owner
3rd Gear
Posts: 451
Joined: Sun Aug 17, 2008 3:12 pm

Re: S mode vs Dynamic

Post by RS Owner » Wed Aug 15, 2018 11:11 pm

bakerstreet wrote:
Mon Aug 13, 2018 8:01 pm
TO be honest they should just have it set to S Dynamic from the factory and not bother with D Comfort - who the heck wants to drive around in D Comfort....
D seems quite pointless to me unless your entering an eco-marathon and this is the wrong car for that.
D is just too laggy.

I use S and quite often have to use M, I'm an S&M man (there's the punchline :D)
Current : 2018 F5 RS5 (Let's Fire Up the Quattro)
Gone : 2017 M3 CP
Gone : 2007 B7 RS4 ( :kissmyrings: )

User avatar
Graeme4130
Cruising
Posts: 3801
Joined: Thu Dec 22, 2011 12:58 pm

Re: S mode vs Dynamic

Post by Graeme4130 » Fri Aug 24, 2018 7:04 pm

MikeFish wrote:
Wed Aug 15, 2018 3:32 pm
Markp wrote:
Wed Aug 15, 2018 1:43 pm
RS4 Owner wrote:
Mon Aug 13, 2018 3:27 pm

Presumably you mean the cold start.
Ask a coder for a "cold start delete". Certainly could be removed on the M3. Though I have not heard of many people doing much coding on the RS4 or 5.
The cold start is usually OK with the standard exhaust but it can be obscenely loud with some aftermarket exhausts hence some people have it deleted it as it's just an emissions thing.
Mine does it whether hot or cold. Embarrassing at times.
Is it cold start or choke? When you normally start the car cold it will be in a cold start mode and have some choke. The choke has a higher idle. Normally the choke will go back to normal and revs drop but the car is still loud due to the cold start mode.
I wouldn't expect either if these on a warm car though.
I didn't think cars had Chokes since Carburettors died off in the 90's
-------------------------------------------------------
Gone - 11/06 B7 RS4 Avant - black/black (Daily drive & kids taxi)
Gone - 05/13 B8 RS4 Avant - Suzuka grey (Daily drive & kids taxi)
Gone - 01/14 B8 RS5 Coupe - Short term car
Gone - 09/14 B8 RS4 Avant - Misano Red/Ceramics (Daily drive & kids taxi)

Current - 04/18 B9 Rs4 Nardo Grey
ZX10R Race bike - 210bhp and a few skid marks on the seat ;)

User avatar
MikeFish
Cruising
Posts: 15588
Joined: Tue Aug 31, 2010 9:23 pm
Location: The Middle of Somewhere

Re: S mode vs Dynamic

Post by MikeFish » Fri Aug 24, 2018 11:18 pm

graeme4130 wrote:
Fri Aug 24, 2018 7:04 pm
MikeFish wrote:
Wed Aug 15, 2018 3:32 pm
Markp wrote:
Wed Aug 15, 2018 1:43 pm


Mine does it whether hot or cold. Embarrassing at times.
Is it cold start or choke? When you normally start the car cold it will be in a cold start mode and have some choke. The choke has a higher idle. Normally the choke will go back to normal and revs drop but the car is still loud due to the cold start mode.
I wouldn't expect either if these on a warm car though.
I didn't think cars had Chokes since Carburettors died off in the 90's
No, you are right but modern cars still change the air fuel mixture when cold same as the old carburetor engines did. But instead of you pulling a lever to choke the amount of air going in (to increase fuel mixture) it is all done electronically and automatically on modern fuel injected engines which increases the revs.

Post Reply

Return to “RS4 (B9 Typ 8W) 2017-”

Who is online

Users browsing this forum: No registered users and 86 guests