[mcr98]

anybody with a8 and converter try launching in 2nd gear , I tried on the street with street tires , but not at the track with drag radials .

[parish8]

I only launch in 2nd. I would try 3rd on the street if it would let me.

[Laconic]

Originally Posted by parish8

I only launch in 2nd. I would try 3rd on the street if it would let me.

You the same Parish that had the truck?

[laynlo15]

We actually have lots of guys with big power launching in 2nd as we just can't hook these cars in 1st.

[Umbriel]

Is launching in second a tune thing or can you do it manually by putting it in second and then slapping it over to auto after launching? I'll be going to the track with a forged 416 and a Huron Speed twin turbo kit making well over 1000 and I am pretty sure I am going to need to do this.

[parish8]

Originally Posted by Laconic

You the same Parish that had the truck?

Yep

[parish8]

Originally Posted by Umbriel

Is launching in second a tune thing or can you do it manually by putting it in second and then slapping it over to auto after launching? I'll be going to the track with a forged 416 and a Huron Speed twin turbo kit making well over 1000 and I am pretty sure I am going to need to do this.

You can just use the shifter. I have been told you can program it out but I can’t seem to get that done. I think the 17’s and newer may not have the same programming options as the 16’s.

[grampa_ss]

Originally Posted by Umbriel

Is launching in second a tune thing or can you do it manually by putting it in second and then slapping it over to auto after launching? I'll be going to the track with a forged 416 and a Huron Speed twin turbo kit making well over 1000 and I am pretty sure I am going to need to do this.

That is exactly how you do it. That's what i did on a shitty track-prep day.

[laynlo15]

Launch in second, slap it into auto and let it go. That's how I've tried it.

[Umbriel]

Thanks everyone, that is going to be how I try it then when I go because I am sure first will be absolutely useless.

[KingLT1]

Originally Posted by Umbriel

Is launching in second a tune thing or can you do it manually by putting it in second and then slapping it over to auto after launching? I'll be going to the track with a forged 416 and a Huron Speed twin turbo kit making well over 1000 and I am pretty sure I am going to need to do this.

It can be tuned so you can leave it manual mode and it will hold what ever gear is selected but still shift on it's own once commanded mph is reached. I only use Manual mode now for making pulls. The trans shifts more consistently when you do not slap it over into drive. Unless you can do it at the exact same time every run( which is nearly impossible) or it throws off the shift timing. So it will either shift early or late.

Originally Posted by laynlo15

Launch in second, slap it into auto and let it go. That's how I've tried it.

And that is likely why it will randomly short shift on you. There is a narrow window on these transmissions to slap the shifter over into D and not mess with the TCM's shift timing.

[parish8]

Originally Posted by KingLT1

It can be tuned so you can leave it manual mode and it will hold what ever gear is selected but still shift on it's own once commanded mph is reached. I only use Manual mode now for making pulls. The trans shifts more consistently when you do not slap it over into drive. Unless you can do it at the exact same time every run( which is nearly impossible) or it throws off the shift timing. So it will either shift early or late.



And that is likely why it will randomly short shift on you. There is a narrow window on these transmissions to slap the shifter over into D and not mess with the TCM's shift timing.

I would like to know if anyone is making the tuning part work for a 17+ car. I was able to tune 1st gear out in manual mode which is great for pulling up, doing a burn out, staging and launching. I tried lowing the shift numbers in manual mode and no matter what I put in there it still tried to shift above 7000rpm. Fully automatic shifts (without having to slap the shifter over) at the rpms I choose while locking out 1st would be great. One less thing to have to think about while racing.

[KingLT1]

Hit up Brett @ Pray Performance.

[parish8]

Originally Posted by KingLT1

Hit up Brett @ Pray Performance.

I did, he hasn’t tried a 17+.

I did look closer at my tune from back when I tried it and I did not have the part throttle mph’s set to exactly the same as the wot mph’s. I bet that was my problem. If I ever get back to working on my car I will have to give that a try.