2nd gear start tcm tune

[mike diesel]

Started reading up on 2nd gear start tunes to help out at the track for allisons short first gear.

My best 60' so far is a 1.68 which isn't bad in my opinion. Even with the new brakes on the truck I can definitely launch harder but still can't get it where I want without wanting to pull through the brakes.

Last night decided to make a 2nd gear start tcm tune while in tow/haul. Well all I can say is 2nd gear seems to work rather well. With my suncoast 1053-1 converter, I can stall it to 3500rpm without the truck even slightly budging on the line. Can make 40+ psi boost while sitting perfectly still. The launches get a little wild though, launching at 3000 rpm and hitting lockup early results in the truck going sideways and smoke off all 4 tires.

Still trying to time lockup just right so I don't spin uncontrollably, but from what I can see testing it on the street, it will work rather nice. Now if i could get my hands on a set of slicks...

If anyone else has issues holding the truck back on the line, I'd recommend trying a 2nd gear start tune. Next races aren't till September 11th dangit.

 

[TROJAN366]

I had very good luck with mine as well. The truck definitely leaves much smoother but I have heard of guys burning up converters if they are staged too long.

 

[mike diesel]

I had very good luck with mine as well. The truck definitely leaves much smoother but I have heard of guys burning up converters if they are staged too long.

Evan mentioned as long as your not sitting on the converter for awhile, things will be fine. Sometimes it's hard waiting for slow poke next to you to stage though.

 

[Chevy1925]

Evan mentioned as long as your not sitting on the converter for awhile, things will be fine. Sometimes it's hard waiting for slow poke next to you to stage though.

thats when the "brian staging" comes into play. let the kid take forever to stage while your off boost, then once the lights hit, boost up and launch after they are gone. i always gave him crap for it but it aint a bad idea at test and tune

 

[mike diesel]

I can't accept loosing lol I need to be to the end of the track first

 

[Chevy1925]

:roflmao:

 

[S Phinney]

Evan mentioned as long as your not sitting on the converter for awhile, things will be fine. Sometimes it's hard waiting for slow poke next to you to stage though.

That us why you let the other guy light both bulbs first. Then you can control the situation.

Sent from my SM-G920V using Tapatalk

 

[mike diesel]

That us why you let the other guy light both bulbs first. Then you can control the situation.

Sent from my SM-G920V using Tapatalk

We have 10 seconds to stage once the other guy has lit both bulbs. So sometimes that doesn't work. If everyone would courtesy stage, it would be fine. But 80% or people at the track don't have a clue.

 

[S Phinney]

We have 10 seconds to stage once the other guy has lit both bulbs. So sometimes that doesn't work. If everyone would courtesy stage, it would be fine. But 80% or people at the track don't have a clue.

Exactly, so you control how much of that ten seconds you use. You don't want to be on the convertor for 10 seconds. If you make a habit of that your convertor will make a premature exit.

Sent from my SM-G920V using Tapatalk

 

[DIESELMAFIAPER.LB7]

I can't not be on my converter for 10 seconds to spool :rofl: more 20 to stage and launch

 

[CaptPhil]

I prestage, start building boost once the other guy full stages, then bump in to full stage.

Usually only on the converter for about 5 seconds. I may try a second gear launch.

Sent from my SM-G900V using Tapatalk

 

[mike diesel]

I prestage, start building boost once the other guy full stages, then bump in to full stage.

Usually only on the converter for about 5 seconds. I may try a second gear launch.

Sent from my SM-G900V using Tapatalk

That is usually what i do.

 

[S Phinney]

Same thing that usually do as well but making boost as I bump in so that am lit and ready to go.

 

[DIESELMAFIAPER.LB7]

I prestage, start building boost once the other guy full stages, then bump in to full stage.

Usually only on the converter for about 5 seconds. I may try a second gear launch.

Sent from my SM-G900V using Tapatalk

that's what I try to do as well

 

[hondarider552]

I had to start spooling in the staging lanes :roflmao:

 

[IdahoRob]

It takes 3 stage bulbs to light before auto start activates. Only 2 lit, take your time unless you were the one that wasn't courteous.

You will burn up a converter at some point.

Using for a best ET on a slick track or to win an event is worth it. Living by a second gear launch because of lack of truck set-up will become expensive.

Just my .02 from experience.

 

[IdahoRob]

I prestage, start building boost once the other guy full stages, then bump in to full stage.

Usually only on the converter for about 5 seconds. I may try a second gear launch.

Sent from my SM-G900V using Tapatalk

I love when my opponent does this. Really comes down to the type of truck. Street trucks can do this, I like to have some boost up even if driving a 11 second truck.

10 second trucks and faster, you should be on some boost before pre staging.
Watch last weeks race when a truck staged this way. Scroll down to Sat4, Fast forward to 1 hour 31 minutes. http://www.nhrda.com/media_videos.php

 

[S Phinney]

It takes 3 stage bulbs to light before auto start activates. Only 2 lit, take your time unless you were the one that wasn't courteous.

You will burn up a converter at some point.

Using for a best ET on a slick track or to win an event is worth it. Living by a second gear launch because of lack of truck set-up will become expensive.

Just my .02 from experience.

Agreed

Sent from my SM-G920V using Tapatalk

 

[S Phinney]

Definitely need boost before or you will not leave on the chargers.

Sent from my SM-G920V using Tapatalk

 

[TheBac]

It takes 3 stage bulbs to light before auto start activates. Only 2 lit, take your time unless you were the one that wasn't courteous.

You will burn up a converter at some point.

Using for a best ET on a slick track or to win an event is worth it. Living by a second gear launch because of lack of truck set-up will become expensive.

Just my .02 from experience.

Yep.