[Say When!]

So coming from every previous M car since 1990 i am not happy with the kick down or turbo lag i experience in any mode including with MDM off. Unless I am at the required RPM the kickdown or turbo lag is the worst ive experienced on an M car.

Has anyone figured out why the car takes so long to get the turbo spooled or kickdown to correct gear?

I have read a few posts but mainly reference turbo spooling etc , can this be a gearbox issue seeing as first Auto box on the M (3/4)?

[forcefed]

Stock turbo's are doing mid 9's in the quarter mile, they are not small, if you want instant spool either downshift(hold left paddle to get to perfect gear) before or switch to a b58 car, those engines spool much quicker since they have a small turbo.

[Say When!]

I hear you however i dont want to always use paddles , I would like to just put my foot down like i could in B58 as well as current F90 M5?

[TVonthe80]

The kickdown can take some time if going from cruising to killmode. But i would disagree with the "turbo lag" comment. if you're in the right gear the car is pretty responsive and certainly not something i would describe as laggy. It may not be as minutely responsive to throttle inputs as other M cars or NA cars, but such is the case for all turbo/auto cars.

given the huge capabilities of the engine, it's incredibly responsive and civil at normal speeds.

[TrentMeister]

There’s a difference between a boost threshold and turbo lag.

I used to think that too, but my car I’m assuming, has adapted to me and kicks down quite fast now and low gear.

Just keep asking it for what you want and it’ll learn who you are.

Or get Xhp and be quite a bit happier with transmission performance.

[Say When!]

Originally Posted by TrentMeister

There’s a difference between a boost threshold and turbo lag.

I used to think that too, but my car I’m assuming, has adapted to me and kicks down quite fast now and low gear.

Just keep asking it for what you want and it’ll learn who you are.

Or get Xhp and be quite a bit happier with transmission performance.

XHP ? Please elaborate

[Say When!]

Originally Posted by TVonthe80

The kickdown can take some time if going from cruising to killmode. But i would disagree with the "turbo lag" comment. if you're in the right gear the car is pretty responsive and certainly not something i would describe as laggy. It may not be as minutely responsive to throttle inputs as other M cars or NA cars, but such is the case for all turbo/auto cars.

given the huge capabilities of the engine, it's incredibly responsive and civil at normal speeds.

I hear you but you can't always plan on being in the right gear when you randomly want to plant the accelerator.

[ZheroG80]

Originally Posted by Say When!

XHP ? Please elaborate

XHP is what you are looking for. Gear kickdowns and shifting are way more responsive with the line pressure bump. You can touch the brake pedal and the car will throw you in to the best gear for your speed.

Makes the transmission act more like a DCT.

The pedal is a lot more responsive. I run XHP stage 3 flash on my car.

(xhp is a transmission tune download. Buy the license and a flasher, I use the thor)

[Say When!]

Originally Posted by ZheroG80

XHP is what you are looking for. Gear kickdowns and shifting are way more responsive with the line pressure bump. You can touch the brake pedal and the car will throw you in to the best gear for your speed.

Makes the transmission act more like a DCT.

The pedal is a lot more responsive. I run XHP stage 3 flash on my car.

(xhp is a transmission tune download. Buy the license and a flasher, I use the thor)

Thank you ,will look into that

[Drillbit02]

Originally Posted by forcefed

Stock turbo's are doing mid 9's in the quarter mile, they are not small, if you want instant spool either downshift(hold left paddle to get to perfect gear) before or switch to a b58 car, those engines spool much quicker since they have a small turbo.

When I hold the left paddle it will go down 1 gear but that’s it. Even when I am cruising in 6/7 gear and can go down to 3/4 gear. What am I missing?

[ifizik]

Originally Posted by Drillbit02

When I hold the left paddle it will go down 1 gear but that’s it. Even when I am cruising in 6/7 gear and can go down to 3/4 gear. What am I missing?

I think automatic selection of lowest gear when holding down the paddle is only available in one of the “D” driving modes. Were you trying this in manual or “S” mode?

[Drillbit02]

Originally Posted by ifizik

I think automatic selection of lowest gear when holding down the paddle is only available in one of the “D” driving modes. Were you trying this in manual or “S” mode?

Yes. I figured it out this morning. Only works when in “D” driving mode.