Hptuners Log data translation help required !

[2boosted]

No need to shift at a higher rpm if your truck isn't making power up top.<br />
Put the truck on the dyno, hp is probably peaking at 5300--5400rpms, which is typical.<br />
Truck is loosing boost up top because the system can't flow.<br />
I'm always for all the rpm you can turn an engine, but not when it's lacking power.<br />
<br />
I think I had several dreams about this already, lol.

<br />


so farmtruc, if hp is peaking 5400 rpm, gear change at 6000 is a nice spot so next gear drop on power band?

If the trick system can't flow in upper rpm what options do I have to cure that?

I wish I can avoid all the trouble to tune at 12 psi and race fuel....and then to 18 psi and race fuel. Tuning at 8 psi and pump gas is enough stress for a life time


Any good tuner in the house?

[farmtruc]

I'm just assuming. What's happening is the housing is too small, or the back pressure is too great, so the engine can only flow/spin so much; so to speak.
I'm not saying the trick kit isn't flowing, i'm saying you're engine needs more freedom.
If you're shifting at a certain rpm, try to increase it or lower it and see if there are any significant changes in 1/4 mile time.
Dyno will show power curve.
From that you can base your tuning from. I tend to shift trucks a little higher or past the power band as well, the momentum allows the truck to pull past, and less rpm drop during shifts.
Just see what feels best.