What RPM does your truck shift from 1st to 2nd? Mine shifts when the tach reads about 4600RPM would seems kinda silly since the HP peak doesn't come until 5000RPM.

 

I thought shifts were designed to work at peak torque when they shift up, thus leaving the start of the next gear at the top of the torque curve?

 

Electronic tachometers are notoriously off to some degree. The stock 1 _ 2 up-shift is in the 4700 to 4900rpm range for the 04 / 05 3-valve

 

my tach hits 5 grand every time
im talking about WOT, which i think you are too

 

Electronic tachometers are not accurate

 

Shift scheduling is dependent on load. Obviously the PCM is gonna hold 1st longer under WOT than light acceleration. Since I've been driving to maximize fuel economy as of late, I accelerate real easy, so my 1-2 shift is probably somewhere around 15 mph and maybe 2000 rpm. Don't remember exactly.

 

Mine was there too until I got a superchips tuner and now it's at just over 5000.

 

mine stock was 4800-4900.
after troyer tuned xcal2 its 5100-5200
nice firm shifts too.

 

Not a single stock 5.4 3 valve will ever see 5000 rpm from the factory..None..
If you want to hit 5000 rpm you will need a tuner.
With my X-Calibrator2 at WOT my 1-2 upshift is 5400 rpm, and my 2-3 is 5150 rpm..

 

Thanks. That's exactly what I was wanting to hear. The truck seems to really pull hard from about 3500RPMs on. When it shifts from 1st to 2nd, it drops below that range and kinda bogs. I was hoping that the X2 would cure that.

 

Troyer tuned: I'm shifting at 5400

 

What's with the 5000+ rpm shift points? I wonder about some of y'all sometimes...

 

Huh????

For one thing the higher you shift at the more rpm you will be getting as soon as you are in 2nd gear. I noticed a big difference with that. Also, If the max horsepower is attained and advertised at 5000 rpm, why give me a truck that shifts at 4600?

Horsepower isn't like speed. All trucks tell you the horsepower, they don't tell you your max speed. It's not like I am a speed freak (well maybe), I just like accelerating fast, My T-Cat goes 0-60 mph in just under 3 seconds, now that's fast.

 

You're also pushing the drivetrain to parameters that it wasn't designed to operate at. May put more stress on the transmission in the long run.

 

That’s a given! The bottom line is, you pay to play