i have a 2001 f150 4x4 with a 5.4 lift 35" tires 4.56 gears cai and true dual 2.5 exhaust no cats di/do magnaflow i got it dyno tuned today

baseline was 185hp and 247 tq
after tune was 204hp and 314tq

i wasnt looking for much just wanted it to run better im pretty happy to see i gained so much torque and i can actually feel the difference

i was just wondering if these are decent number for a 5.4 2 valve?

 

Holy crap! That just goes to show how important the tuning is, jeez. Considering that you have 35" tires and those numbers are at/near or better than stock RW numbers, I'd say you were doing just fine. RWHP was probably right around 204, maybe 215, and RWTQ was probably below 314, maybe around 300.

 

Hi.

You can safely Ignore the gibberish in the post above, lol.

Stock published specs @ the crank - your truck makes 260 HP / 350 ft-lbs TQ

Driveline losses can approach 80+ hp, on this platform (4x4 being worse than 4x2) so your baseline appears reasonable.

I'd say your numbers, while good, appear a bit low and there *may* be some power left on the table (depending on target octane). Torque gains are very good. ( Makes me wonder what type of dyno was used - they can vary greatly ).

For comparative results, see this thread - specifically Post # 13: https://www.f150online.com/forums/ch...off-xcal2.html

You should note that the above numbers are achievable via remote mail-order custom tuning delivered via a flash programmer.

There are a lot of factors in play here - my ramblings:

- Maintenance - fresh plugs, fresh front O2's and a fresh fuel filter, etc

- What was the octane target for the tuning? 93 octane is required for best results in a 2V. (see the info in the provided link).

- Area under the curve improvements are at least as important as peak numbers.

- Proper A/F's are crucial for safe sustainable power.

- How is part-throttle smoothness and driveability? Shifting - is the firmness progressive? What were the revised shift points set to? Is this a pure perf tune, tow tune, combo tune or other?

- Your tire size / mass increases can and will affect power. I applaud you for doing it right and regearing to make up for the torque multiplication losses. Many neglect this all-important item. Good job!

- Please post a pic of the dyno plot printouts for HP, TQ and A/F's. You should have a copy - you paid for it.

- Who was the tuner, and what tuning system was used? How many pulls? Cost?

Sorry fer all the Q's. Bubba be curious

Nice lookin' rig, and congrats on the tuning! Feels, good, eh?

Thanks

MGD

 

...Who was the tuner, and what tuning system was used? How many pulls? Cost?

 

Umm average drivetrain losses are 15-18%, so . . . my numbers are fine. Especially because I didn't do the math, but guessed knowing average loss percentages. And they're close.

You can get off your little high horse there, considering that all I said was that he was doing fine.

 

i paid 575 with the tuner he did three pulls it was a dyno jet
all i wanted was a basic performance tune that would be good all around
it was tuned for 85 octane as thats what i run he also made me a 91 octane tune in case i wannna try and get more out of it i guess another thing to keep in mind is that im in denver so its a mile high...

 

i guess to answer more questions it was rwr motorsports the driveabilty is smooth it drives mostly the same it just seems to pull a little better nothing crazy you can notice more power when it shifts its pulls good right away i didnt want to mess with the shifting parameters because i liked how it shifted before but i might play around with it some day.

one of the biggest reasons for doing it was i wanted to correct the speedo was way off

 

A fellow coloradian...i have an 08 4.2l with a vmptuning 87 octane tune and I do run 87 in it. I have never gotten on a dyno but I have a scangauge2 which has a hp estimator and it has hit 203hp at 6800ft. Keep in mind stock is 202hp and all I have is the tune and cold air intake. My usual number is about 195 or so but on a 35 degree day it hit 203 and 201. I am quite curious how much torque I gained from the tune tho...Justin at vmptuning told me I should be seeing 10 to 15hp more than stock with my setup. But I never asked about torque...i just figured about the same as the hp. So somewhere around 270 to 275 since stock is 260.

 

Hell they look all right to me. 5k ft+ above sea level and power zaping tires thoses are okay numbers. I sense forced induction in your near future.

 

19 hp and 67 ft torque, sounds kind of rich.

 

...Which is why I asked for the plots to be posted up.

MGD

 

this is a new method of determining AFR to me

Why would this make it sound rich?

 

Sorry i had a poor choice of words , by rich i meant that 67 ft lbs of torque sounds like a lot to gain from a tune on a stock truck. basiscally dont know if i beleive it. not calling the tuner a liar, but i aint calling him a truther either.

not that the air/fuel was rich.

 

Gotchya. On these early 5.4s, there is a Power Enrichment delay that when disabled often results in a rather large gain in torque down low.

Its also possible and likely that the larger tires were causing the stock cal to knock as the load was all out of whack, and as a result it would be down on torque in the stock tune, making the gains look much better.

OP, does it feel like it picked up 75 ft/lbs? That should be a pretty noticeable difference

 

Considering that (I inferred that) his base tune was sloppy, completely untuned 4.56s (because those numbers couldn't be that way with stock gears for 35s) spinning 35s, they seemed low. Then the 4.56s were able to overcome and surpass the losses caused by 35s and show some gains over stock.

So actual bone stock numbers don't mean a thing, which are unverified for a 13 year old truck, and are more than worthless.