Idle Rev Limiter..."Launch Control"???

**panhandledubs** · 09-12-2012 02:55 PM

First off...I searched and googled, and came up with nothing.

I've had my 2009 B8 A4 Manual for a couple of weeks now and just noticed that while stopped, there is a rev limiter. It's acting like a launch control of some sort. It will only rev up to about 4000RPM. The car is completely stock...so I was wondering if this is normal or what? Also, are there options to change it?

Reason I'm asking is that once I get the car tuned how I want it, the 4000RPM might bog down and need to be raised to 4500 or so. Just curious. Thanks

**bennydub** · 09-12-2012 02:57 PM

This is normal and is like that for all audis. Safe guard to prevent over revving while in neutral or when the car is standing idle.

**panhandledubs** · 09-12-2012 03:01 PM

Originally Posted by bennydub

This is normal and is like that for all audis. Safe guard to prevent over revving while in neutral or when the car is standing idle.

It's not like that for all Audis. I say this because I've owned 3...this is the first one that's done it. This is my first B8 though, so it must be normal for the B8.

Anyone know if it's removable?

***Stubek*** · 09-12-2012 03:28 PM

It is a standard "feature" on the B8 2.0T and the turbo does not really spool much if you are in neutral either.

**howardfootball** · 09-12-2012 03:42 PM

You would probably bog down since you won't be building any boost. It's not anti-lag. I'm not sure on the B8's, but you can self tune for an anti-lag feature using the stock ECU. Builds about 6-7 pounds of boost.

**dracolnyte** · 09-12-2012 04:58 PM

Originally Posted by panhandledubs

It's not like that for all Audis. I say this because I've owned 3...this is the first one that's done it. This is my first B8 though, so it must be normal for the B8.

Anyone know if it's removable?

removable with APR stage 2

**pierreb** · 09-12-2012 05:56 PM

Originally Posted by dracolnyte

removable with APR stage 2

confirmed

**Wah** · 09-12-2012 10:41 PM

Its standard on all B8s but....

Originally Posted by dracolnyte

removable with APR stage 2

Originally Posted by pierreb

confirmed

Really? that's interesting....

**TCHUN003** · 09-12-2012 11:32 PM

My revo stage 2 won't let me do it.

**maga4** · 09-13-2012 06:24 PM

My APR stage 2 does not let me? Not that I really care to, but just interesting. Only know because revved it up a bit after getting my new IC installed. Maybe I'm missing something (or maybe I'm accidently in stock mode and I have more power left?).

**ryank382** · 09-13-2012 07:23 PM

this has bothered me as well. And what do you guys mean the turbo doesn't spool in neutral? what is the reason for this? i dont understand why its so hard to launch our cars

**pierreb** · 09-13-2012 09:26 PM

ok I should clarify that I only tried this in Park. I guess I will try this while in gear tomorrow to see.

**Wah** · 09-13-2012 10:42 PM

Originally Posted by TCHUN003

My revo stage 2 won't let me do it.

x2

Originally Posted by ryank382

i dont understand why its so hard to launch our cars

I don't have a problem launching the car at 4k rpm. Not sure why you are saying its hard...

**ryan_sn** · 09-13-2012 11:37 PM

I've tried launching my car at like 3500rpm's but I find when I let my foot off the brake the rpm's just drop and the car accelerates as normal.

**ryank382** · 09-14-2012 06:51 AM

Originally Posted by Wah

x2

I don't have a problem launching the car at 4k rpm. Not sure why you are saying its hard...

Do u drop the clutch or use a 2 step method? I thought dropping the clutch lead to bogging unless u had a tune. In that case idk

**Wah** · 09-14-2012 07:10 AM

I have the 7-speed Stronic gearbox so no clutch for me. Well there are two clutches, I just don't have control over them

**panhandledubs** · 09-14-2012 08:13 AM

Originally Posted by ryank382

Do u drop the clutch or use a 2 step method? I thought dropping the clutch lead to bogging unless u had a tune. In that case idk

This is "feathering" a clutch...and will burn it up pretty quick. Also, once you get into aftermarket clutches, this is much more difficult to do.

You're going to have bogging unless you have more torque than stock...but I plan on doing a lot of upgrades, so I also wanted to know how to remove that limiter, so I can launch at 4500-4700, where it should be for this AWD car.

**ryank382** · 09-14-2012 08:42 AM

Originally Posted by Wah

I have the 7-speed Stronic gearbox so no clutch for me. Well there are two clutches, I just don't have control over them

haha well then its a little different

Originally Posted by panhandledubs

This is "feathering" a clutch...and will burn it up pretty quick. Also, once you get into aftermarket clutches, this is much more difficult to do.

You're going to have bogging unless you have more torque than stock...but I plan on doing a lot of upgrades, so I also wanted to know how to remove that limiter, so I can launch at 4500-4700, where it should be for this AWD car.

you seem like you know more than me so im going to take this opportunity and ask a couple questions lol. Isnt it safer on the transmission but rougher on the clutch if you feather it? and why is it more difficult to feather an aftermarket clutch? i always thought dropping the clutch was really bad because of transmission shock. clutch is always replaceable but the transmission is a bigger deal.

**mgm** · 09-14-2012 08:46 AM

I believe the rev limiter turns off when you turn off DSC. Press and hold for 8+ secs.

**panhandledubs** · 09-14-2012 10:05 AM

Originally Posted by ryank382

you seem like you know more than me so im going to take this opportunity and ask a couple questions lol. Isnt it safer on the transmission but rougher on the clutch if you feather it? and why is it more difficult to feather an aftermarket clutch? i always thought dropping the clutch was really bad because of transmission shock. clutch is always replaceable but the transmission is a bigger deal.

I don't claim to know a lot, but I have spent a lot of time at the track and have built up several cars. I would never recommend "dropping the clutch"...feathering is going to be better, but that doesn't mean it needs to be drawn out too longer either...and higher RPMs are still needed to get the desired launch. The reason feathering is harder on an aftermarket clutch is because the "space" between when the clutch BEGINS to engage and is FULLY engaged is much much shorter and very exact on a good clutch (especially higher in the "Stages" that you go and "Street" vs "Race" clutches). Hope that makes sense.

**ryank382** · 09-14-2012 12:21 PM

most definitely makes sense, thanks for the info!

**panhandledubs** · 09-14-2012 02:00 PM

Originally Posted by mgm

I believe the rev limiter turns off when you turn off DSC. Press and hold for 8+ secs.

Didn't even think of that...that did it. Held down the ESP button until it completely shut off, then I can rev past the 4k...peeled out a few times too ;)

**Countryboy** · 09-16-2012 05:29 AM

Corrected.

**mgm** · 09-16-2012 06:32 AM

This is a joke right? The only fluid in a manual transmission is in the gear box and hydraulic fluid to operate clutch. The clutch/pressure plate itself is a dry system.

**Countryboy** · 09-16-2012 07:10 AM

Originally Posted by mgm

This is a joke right? The only fluid in a manual transmission is in the gear box and hydraulic fluid to operate clutch. The clutch/pressure plate itself is a dry system.

Sorry, woke up on wrong side of my brain. Thinking of AT & MT at the same time. Thanks for correcting me. Not looking to spread bad info.

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