Launch Control delay issues

[Nightshifter]

Hello! New here and already seeking answers to issues I'm having!
Currently rolling in a 2022 3.3T G70 AWD. I turn off traction control, turn off stability control, have it in sport+, and wait until the “launch control” sign pops up. However, it seems like the moment the cars moves off the line, there's a delay and the car drones until ~10mph (this happens for ~1 second overall) and then starts moving again like it should instantly. I've read about the car is being nannied even in drift mode? I installed a jb4 tune running map 1 and upgraded to Denso plugs @ 0.22 gap to start. This really becomes augmented when you use Map 2 or Map 3 more so then Map 1. Terry @ BT told me that launch mode appears to be set at only 2 psi. The car is def. about 0.5 - 0.7 seconds quicker not using launch mode (draggy tested).There's still a delay, but not near as bad when using LC. Any insight is welcome... thanks!

 

[Slip_Angle]

Hello! New here and already seeking answers to issues I'm having!
Currently rolling in a 2022 3.3T G70 AWD. I turn off traction control, turn off stability control, have it in sport+, and wait until the “launch control” sign pops up. However, it seems like the moment the cars moves off the line, there's a delay and the car drones until ~10mph (this happens for ~1 second overall) and then starts moving again like it should instantly. I've read about the car is being nannied even in drift mode? I installed a jb4 tune running map 1 and upgraded to Denso plugs @ 0.22 gap to start. This really becomes augmented when you use Map 2 or Map 3 more so then Map 1. Terry @ BT told me that launch mode appears to be set at only 2 psi. The car is def. about 0.5 - 0.7 seconds quicker not using launch mode (draggy tested).There's still a delay, but not near as bad when using LC. Any insight is welcome... thanks!

Built in protection for the transmission. The only solution is a TCU tune. Get one and it's a whole new world.

@lozic_ecu on Instagram.

 

[Nightshifter]

Built in protection for the transmission. The only solution is a TCU tune. Get one and it's a whole new world.

@lozic_ecu on Instagram.

 

[Nightshifter]

Yeah... that's what it looks like ... As soon as you try to build boost during launch control... it just rolls off the line and drones :/ Looking at the Lap3 TCU tune. Should I get the extra TCU so I can swap back in the OEM one when I go to the dealership, or will they know regardless? thanks!

 

[JonnyB]

Hey OP - as other said, launch control is crap on this car (arguably to protect the car), so you basically have to find ways to launch it without it.

My best results was doing a manual brake boost launch on sport mode (not sport+). Apply brakes hard but don't mash on throttle (else it kicks in the same "slow roll" that you get when using LC). Gradually let it build rpms and you will see its going to be fluctuating up and down (the rpms), try to time so you release your brakes right before you hit the gas pedal full.

I had a 4.49s 0-60 mph with snow tires and JB4 on map 2. Will be trying it again with summers tires back on.

 

[Nightshifter]

Hey OP - as other said, launch control is crap on this car (arguably to protect the car), so you basically have to find ways to launch it without it.

My best results was doing a manual brake boost launch on sport mode (not sport+). Apply brakes hard but don't mash on throttle (else it kicks in the same "slow roll" that you get when using LC). Gradually let it build rpms and you will see its going to be fluctuating up and down (the rpms), try to time so you release your brakes right before you hit the gas pedal full.

I had a 4.49s 0-60 mph with snow tires and JB4 on map 2. Will be trying it again with summers tires back on.

Hello JonnyB!

Yeah I tried that before using map 2 and hit the 4.40s as well. Are you AWD? Eventually going to get that TCU tune though. Another thing I noticed is that the car started to run slower & slower as I used MAP 3 and ~E30. Doing 100 - 200 @ 9.34 to 9.99 (funny number there). 0 - 60's went down as well on Map 3... 5.0's, which is slower than stock :/ I have the Denso plug's installed gapped @ 0.22. I just wonder if the car's(because MAP 3 generates more power) OEM TCU is hampering the tune to protect the transmission... but i mean in 3rd gear as well, not just 1st and 2nd...?

Anyway, as soon as I went back to E10 and Map2... BAM! 4.40's ... the car consistently runs in the 4.40's under the same ambient conditions on the same road same directions. So something with E30 this 2022 isn't liking... esp. 1st and 2nd gear. Again, E30 under same conditions was getting me 4.72 - 5.5 0 - 60s :/ E10 (California 91 Octane Panther Piss) & Map2 4.4 - 4.5's... go figure

 

[JonnyB]

Mine is AWD. By slower and slower do you mean when doing back to back pulls or over the course of days/weeks? I would expect the ECU to start pulling boost down to help cool things off, but that's not something I'd expect on a run with a good amount of wait between pulls to let things cool off.

 

[Slip_Angle]

Hello JonnyB!

Yeah I tried that before using map 2 and hit the 4.40s as well. Are you AWD? Eventually going to get that TCU tune though. Another thing I noticed is that the car started to run slower & slower as I used MAP 3 and ~E30. Doing 100 - 200 @ 9.34 to 9.99 (funny number there). 0 - 60's went down as well on Map 3... 5.0's, which is slower than stock :/ I have the Denso plug's installed gapped @ 0.22. I just wonder if the car's(because MAP 3 generates more power) OEM TCU is hampering the tune to protect the transmission... but i mean in 3rd gear as well, not just 1st and 2nd...?

Anyway, as soon as I went back to E10 and Map2... BAM! 4.40's ... the car consistently runs in the 4.40's under the same ambient conditions on the same road same directions. So something with E30 this 2022 isn't liking... esp. 1st and 2nd gear. Again, E30 under same conditions was getting me 4.72 - 5.5 0 - 60s :/ E10 (California 91 Octane Panther Piss) & Map2 4.4 - 4.5's... go figure

When I had the JB4, that was the conclusion I came to as well. The more boost or pedal you would throw at the car, the more the ECU would dial things back to protect the drivetrain from a hard launch.

 

[Nightshifter]

Mine is AWD. By slower and slower do you mean when doing back to back pulls or over the course of days/weeks? I would expect the ECU to start pulling boost down to help cool things off, but that's not something I'd expect on a run with a good amount of wait between pulls to let things cool off.

No day to day ... same temps, same humidity (san diego is very consistent weather ... at least in my location) same trans temps, same road and same directions. I try to be very consistent with the testing conditions. I'll run 3 0 - 60 passes. I'll drive around for about 5 - 10 minutes between each pass to cool things down again. I'll also do 80 - 160 kph passes to get an 80 - 120 and 100 - 160 on a different day on the expressway by me... same exact area... so it's the same slope as well. The car lost its wow factor with E85... as soon as it cleared and I went back to map 2... it had that wow factor again... really pulled hard. So something with the 2022's that don't like too much boost/power... and i'm pretty sure it's the TCU hampering everything down to protect the AWD drivetrain. I know other's get ~ 4.40s with Map 2 as well. But E85 and you clocking over 5's? Something not right =)

Terry & I check the logs... everything is online... AFR, TRIMS (line up well within tolerance), timing, Boost, E85 load... all good. So it must be the TCU limiting the amount of power.

 

[Slip_Angle]

No day to day ... same temps, same humidity (san diego is very consistent weather ... at least in my location) same trans temps, same road and same directions. I try to very consistent with the testing conditions. I'll run 3 0 - 60 passes. I'll drive around for about 5 - 10 minutes between each pass to cool things down again. I'll also do 80 - 160 kph passes to get an 80 - 120 and 100 - 160 on a different day on the expressway by me... same exact area... so it's the same slope as well. The car lost its wow factor with E85... as soon as it cleared and went back to map 2... it had that wow factor again... really pulled hard. So something with the 2022's that don't like too much boost/power... and i'm pretty sure it's the TCU hampering everything down to protect the AWD drivetrain. I know other's get ~ 4.40s with Map 2 as well. But E85 and you clocking over 5's? Something not right =)

If I recall, I modified my JB4 map 6 (custom) to be similar to map 2 but ramp up boost slower at low rpm and got better 0-60 times.

______________________________

Help support this site so it can continue supporting you!

 

[JCtx]

A semi-related question: Which is the best way to launch a stock 3.3T SP RWD in a non-abusive way? Just mash the throttle in sport, or sport+ mode? Car arrives next week. Thx.

 

[Slip_Angle]

A semi-related question: Which is the best way to launch a stock 3.3T SP RWD in a non-abusive way? Just mash the throttle in sport, or sport+ mode? Car arrives next week. Thx.

Auto hold and roll into the throttle quickly

 

[JCtx]

Yeah, forgot these cars have auto-hold. Less reaction time than first releasing the brake pedal indeed. Thank you.

 

[Nightshifter]

Did a lot of testing 50 kph - 200 kph with Map 3 using E30
Again... times have decreased ~ 0.5 - 0.8 seconds throughout the runs.
When I go back to E10 91 Octane (via sensor) and run Map 2, I get the quickest times!

100 - 200 kph went from 9.34 to 10.2
100 - 160 kph went from 4.4 - 4.6's to 5.0 - 5.3
80 - 120 kph went from 2.4 - 2.6's to 2.7 - 3.0's

Timing on all cylinders is good.. AFR is good throughout... Trims fine... something is wrong though. Should not be losing power
with Map 3 or Map 4 running E30 as apposed to Map 2 running 91 Octane ...? Thoughts? Figure the ECU is hampering things down
because there's too much torque throughout the rpm range now?

I try my best to keep the same conditions for testing (same road, directions, ambient temps...)