DCT shift lag/delay - OEM GTS tune

[bmwm3fanatic]

Hey folks. Having a weird problem with my DCT. Sooo my car has the OEM GTS flash, however I’m noticing a super weird shifting issue. Most commonly, if I’m in 4th/5th/6th and shifting up, roughly between 30-50% throttle, I’ll go for the next gear, and the cluster will show I’m in the next gear, however I will feel a full second delay before it awkwardly ‘bumps’ into the next gear. My DCT fluid has been changed recently as well. Any ideas? Should I try removing the gts tune?

[spammysammich]

Was the fluid properly topped off during the change, including the top off once the fluid is warmed?

[bmwm3fanatic]

Originally Posted by spammysammich

Was the fluid properly topped off during the change, including the top off once the fluid is warmed?

This, I’m not sure about. How would one go about checking?

[spammysammich]

Go to the DIY section of this forum and look at the DCT fluid change. There is a special procedure you need to do. Quick answer; Get the car up on level jack stands or a lift. Pull the fill plug, if no fluid comes out, you’re low on fluid.

[spammysammich]

If fluid does come out, replace the plug, start the car in neutral or park, run it for 1 minute at 2000 rpm and then let it idle. Then pull the fill plug again and check. If nothing comes out. You’re low.

[spammysammich]

There is a thermostat that needs to open at a specific temp to allow you to add extra fluid. Who did your service?

[bmwm3fanatic]

Originally Posted by spammysammich

If fluid does come out, replace the plug, start the car in neutral or park, run it for 1 minute at 2000 rpm and then let it idle. Then pull the fill plug again and check. If nothing comes out. You’re low.

Thanks man!

[Adrian g.]

You aren’t running the Epic tune by chance?

[bmwm3fanatic]

Originally Posted by Adrian g.

You aren’t running the Epic tune by chance?

I am not, no. It is the OEM flash.

[Redd]

Try a dct reset