Boosted Launch Improvement?

[SSchmi5519]

Best I can seem to get is a 1.8 60'. This is on the nitto 420 street tires, 305/50/20... Leaving around 13psi on the S472. Any higher i get the steering wheel ripped out of my hands.

http://www.youtube.com/watch?v=6hVXOOY_COg&hd=1




[YOUTUBE]http://www.youtube.com/watch?v=6hVXOOY_COg&hd=1[/YOUTUBE]

 

[adeso]

I had a lot of the same issues, read though my first run with that fatty thread-short answer T bars all the way down limit straps and tire PSI

 

[LWATSON]

I fought the same problems a couple years ago. It ended up being driver error and not my setup. I found myself hitting the throttle before I released the brakes enough. The truck would buck hard,spin the tires and tremble terribly. I fooled around on a back road some and figured out how to transition from brake to gas more smoothly. I mention this because I'm pretty sure your setup is good.

 

[Slammed2007Lbz]

MO POWA and Spicier tuna will net you a better 60:roflmao:

 

[Chevy1925]

Different shocks, lower tire pressure, less weight. Get a go pro setup under the front fender to watch your suspension and what its doin

 

[SSchmi5519]

I was at 35/25 for pressure. Tbar bolts out.


Sent from my iPhone.

 

[gmduramax]

Post pics of your traction bars, mounting locations and pics of the angle.

 

[adeso]

I'm running 24-26 PSI in my front tires but they are something entirely different from you. I notice they get jumpy if I leave too much air in them

 

[DBUSHLB7]

Steve I say you come to ABQ next weekend and you can test all these guys suggestions out. We have a new go pro that will be bouncing around from truck to truck all night @ the competition. Oh and maybe you could do some live "tuna" for $$$

 

[07bluelbz]

Do you have lift keys? My truck looks a lot lower with the bars all the way down.

 

[07bluelbz]

Nevermind. You have a lift kit lol.

 

[SSchmi5519]

Yeah the CVs are perfectly flat with the bolts out. Seems like I'm toeing more than spinning, but hard to tell when inside the truck...


Sent from my iPhone.

 

[Chevy1925]

Your bilsteins are not helpin steve

 

[SHOTZY]

Well if you've covered your mechanical issues and your not doin what Watson said, its the tune. Check pm

 

[GeneralTJI]

fwiw I got 1.75 60ft with 265's at 78psi front / 72psi rear leaving at 10-12psi, old set of jcwhitney air shocks in the back, coilover setup in the front with qa1's... I think the qa1's helped.. but the track I ran at has good track prep- I think that had some real effect on it though it leaves just as hard on the street.... What's your truck weigh? Mine is lightened up, and I think that helped as well.... can the lift have an effect even though the cv's are flat?

 

[hondarider552]

Truck was 6800 IIRC with him in it and 1/4 tank.

 

[Burn Down]

I think Reece was down to 20-25 psi in the front tires and 18-20 in the rear... Been a year or so but pretty sure it was down in that range. From the vid I would agree it looks like your towing in a little. What steering setup are you running?

 

[adrenaholc1]

I'm sure your launch is better than this kids. I tried to tell him to drop the front but he's been racing this truck since I've been racing mine so I'm sure he knows what he's doing. Apparently he don't read up much on here. http://www.youtube.com/watch?v=FunWE-8MqE4&feature=youtube_gdata_player

 

[adrenaholc1]

Nothing like your setup but this is my truck last year all stock suspension with bars down Michelin Lts 285s Iirc 30 front 40 rear boost around 10. Like Watson said about working the pedals I have also had luck with leaving at 25% tp then rolling up to about 60% and finally 100%. that's what my logs have shown. https://www.youtube.com/watch?v=ekO7nhgCdQE&feature=youtube_gdata_player

 

[TheBac]

Steve, your front end is coming up far too quickly. Different shocks will help. The heavy wheels and tires do not help at all. Lots of mass there. What rpm are you launching at?