New dyno numbers on the truck
04-25-2010, 10:23 PM
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New dyno numbers on the truck So I finished the swap and headed to the dyno on Friday. I still need to fix a few issues and work on the tune a little but I got some comparison numbers. I have attached the dyno sheets for comparison. The STS kept up better than I thought but look at the power under the curve with the faster spool time.
Low boost off the wastegate spring
STS - 7.75psi
Trick - 6.75psi
STS - 405/419
Trick - 400/430
More boost
STS - 12psi
Trick - 12psi
STS - 544/571
Trick - 559/622
Final pull
STS - couldn't load past 12psi on the dyno
Trick - 14.5psi spike and settles to 13.5psi
Trick - 610/660
I need to figure out why the boost is dropping 1-1.5psi after it spikes but I'm pretty happy so far. The uncorrected numbers today were 627/677 so it feels very good on the street. Also the last pull was run #104 on this stock Lq4 and it keeps on taking a beating. I might switch to 3bar and see what it will take.
Low boost off the wastegate spring
STS - 7.75psi
Trick - 6.75psi
STS - 405/419
Trick - 400/430
More boost
STS - 12psi
Trick - 12psi
STS - 544/571
Trick - 559/622
Final pull
STS - couldn't load past 12psi on the dyno
Trick - 14.5psi spike and settles to 13.5psi
Trick - 610/660
I need to figure out why the boost is dropping 1-1.5psi after it spikes but I'm pretty happy so far. The uncorrected numbers today were 627/677 so it feels very good on the street. Also the last pull was run #104 on this stock Lq4 and it keeps on taking a beating. I might switch to 3bar and see what it will take.
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04-26-2010, 11:29 PM
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Turbo's are awesome but they take a lot of work to get them right. I always shift where ever I get the most average horsepower. If I shift at 5700 it drops to 4650 so I am still in the meat of the power curve.