Launch Boost

[Fasttrax]

New to launch control. Running 270-300hp. How much PSI can I safely set it to in launch mode? Thanks

 

[KnappAttack]

New to launch control. Running 270-300hp. How much PSI can I safely set it to in launch mode? Thanks

You can set it to whatever you want, does not mean it's going to get to that boost level. Low RPM does not make the boost like a higher RPM will.

Test it and watch your logs as to what it does. If you don't have the traction needed, you'll find traction control is worse or certainly no better than leaving on just the throttle.

 

[Fasttrax]

You can set it to whatever you want, does not mean it's going to get to that boost level. Low RPM does not make the boost like a higher RPM will.

Test it and watch your logs as to what it does. If you don't have the traction needed, you'll find traction control is worse or certainly no better than leaving on just the throttle.

Thanks. My clutch engages at 3600. Have my launch set at 3300. What PSI can I expect to see on launch??

 

[KnappAttack]

Thanks. My clutch engages at 3600. Have my launch set at 3300. What PSI can I expect to see on launch??

Well you need to set the launch RPM higher than clutch engagement at around 3850 or more as to prevent engaging on to the belt. It depends on a lot of factors as to how much boost you'll see but It wont be much depending on how long you hold it. I don't get a pound or two. And It still blows the track away if you are WFO. I typically just use it as a bump preventer as I tickle the throttle, let off the button and slowly squeeze the flipper to limit the track spin.

Play with it and look at your logs, you will need to test to optimize it. IMO it only helps prevent bumping or red lighting on the start for run of the mill arm drop snow/trail races.

Ice dragging with max traction, then that's a different story. You want high engagement and max cackle and boost to leave the line and run the number.

 

[NYTurbo]

Well you need to set the launch RPM higher than clutch engagement at around 3850 or more as to prevent engaging on to the belt. It depends on a lot of factors as to how much boost you'll see but It wont be much depending on how long you hold it. I don't get a pound or two. And It still blows the track away if you are WFO. I typically just use it as a bump preventer as I tickle the throttle, let off the button and slowly squeeze the flipper to limit the track spin.

Play with it and look at your logs, you will need to test to optimize it. IMO it only helps prevent bumping or red lighting on the start for run of the mill arm drop snow/trail races.

Ice dragging with max traction, then that's a different story. You want high engagement and max cackle and boost to leave the line and run the number.

Higher ? Don't think so

 

[KnappAttack]

Higher ? Don't think so

Well if you want the machine to bump the belt and creep on the line and red-light then go ahead and set the RPM lower than clutch engagement.
But where I come from a red-light is a loss.

If the rev limiter is lower than clutch engagement, its engaging on the belt and moving the sled. So yes, set the rev limiter higher.

 

[NYTurbo]

So say clutch engages at 4000 and your going to target higher ? Good luck

 

[KnappAttack]

So say clutch engages at 4000 and your going to target higher ? Good luck

So you set rev limit lower than 4000 if clutch engages at 4000?

Do enlighten me how that makes any sense. Maybe I've been doing it all wrong all along. This I have to hear, I've left off a button and also left off a pressure sensor on the brake line too. I might learn something here.

 

[NYTurbo]

Never set my anti lag over my engagement or your launching before you hit your target . Only common sense

 

[Fasttrax]

So you set rev limit lower than 4000 if clutch engages at 4000?

Do enlighten me how that makes any sense. Maybe I've been doing it all wrong all along. This I have to hear, I've left off a button and also left off a pressure sensor on the brake line too. I might learn something here.

Hurricane Performance does say to set rev limiter about 300 RPM lower than engagement. Maybe we are talking about different launch control?

 

[yamamarc]

https://www.facebook.com/video.php?v=494406927762729

I posted this on another thread

 

[KnappAttack]

Never set my anti lag over my engagement or your launching before you hit your target . Only common sense

Yes you are correct. I had it backwards. my fault, not sure what I was thinking. I was the backwards one. RPM limiter is set lower than engagement. Guess I shouldn't be trying to think when I've had a migraine all day. I feel like an idiot.

RPM limiter is always LOWER than engagement not higher. I knew no one wanted to red-light on purpose. I knew what I was trying to say, just had it backwards.

 

[NYTurbo]

I was starting to second guess myself. All good

 

[Crossfire12]

Age??

 

[KnappAttack]

Age??

LOL! No I hope not, just a migraine and not thinking properly. I knew at I was TRYING to say, just backwards thinking is all.