From what I remember in Mike's (Troyer) long explanation regarding the AF1 is that they also saw a big increase at lower rpm's and not as much at higher rpm's. I think he said it had to do with the stock intake being a much poorer performer at the lower rpm's than it is much higher.

 

Power gains for the 2004 300 HP 3-valve 5.4 engine on the premium gas tuning are 20 HP & 32 lbs./ft. more PEAK horsepower and torque, and there are areas in the lower rpm ranges where the gains are as much as 24 HP & 40 lbs./ft. of torque at the rear wheels! These numbers are from Troyer’s web page about the 1714. Custom tuning (Xcalibrator) is suppose to be a 50% increase over those numbers.

This 3" single Magnaflow cat-back exhaust gains anywhere from 11 HP at the rear wheels on the 4.6 to as much as 14.7 HP at the wheels on the new 300 HP 3-valve 5.4 motors - along with gaining torque everywhere.

Airforce One - Power gains from this kit are approximately 25 HP at the rear wheels on the 3-valve 5.4L V8 motors at just 3000 rpm!

If all this is true, I’m just not seeing it in those dyno numbers

 

Here is the dyno graph from my discussion last night. I haven't received the other runs yet.

This run shows the comparison of the first run with the very last run. The lowest curve is the HP curve with factory tune - as you can see, the 100mph limiter made it impossible to get to max HP.
The next curve up is HP curve for the 91 Troyer high performance tune with Airraid. Notice the 'flattening' from 4300 to 5200 rpm.
The third curve up is the factory tune torque curve.
The highest curve is the Troyer/Airraid torque curve.

The solid vertical line is simply a random reading at 3850 rpm which shows exact numbers at that rpm. There is no significance to that particular line, just what his cursor was on when he printed the graph.

 

Tun2One,

Did you have the Magnaflow installed for all of these runs? I am impressed by the HP and torque gains.. They are in the lower RPM range were you need it for pulling out at stop signs / red lights or when you are towing a heavy load.


Shadled

 

No - the Maganaflow will be installed on June 18th at the Dyno shop, and I will make some more runs then.

 

and there off...

did the dyno tech at least try to compare 2nd gear runs vs 3rd gear runs, most newer dynos will compensate for gear ratios and adjust accordingly. By running a 2nd gear pull you will be able to see your lower rpms tq and hp. It also means your not taking a 5000+ pound truck past 120 on the dyno.

just a suggestion, i had them compare power between the gears and it was dead on, so i told them to run in 2nd gear.

 

Yes he did, and we hit the rev limiter on the factory tune, but got the max HP up to 228. As far as running the the rest of the runs in second gear, that would work as well - I just thought it was cool doing it in third and watching the speedo. I let the shop owner do it his way and kept my mouth shut since this was my first time. I'll ask him about it next time.

 

Hey jp if you look back through all the info our friend Tun2One put up he's testing with '05 F150 5.4 with a Airaid intake, xCalibrator TP custom tuning and the stock exhaust. Right?

I'd say 55HP and 80lbs of torque gain at 3400rpm looks pretty good.

Might want to get me some of that.

 

Well, I have to say those #'s are quite LOW !!! Do you have a 4x4? What size tires? Type wheels?

I have been modding this truck and researching it since day one of it's purchase.

First of all the Airaid DID help my truck. I never dyno'd before and after, but I have track times (slips provided if need be) of improvements. After the Airaid my truck was totally different in throttle response and acceleration. No BS. It helped alot. BUT, I also had a Magnaflow exhaust installed at the time too. More air in, more air out. One without the other will work like crap basically. I literally felt nothing on my exhaust mod (since it was before my intake kit).

The tuner isnt ALL about HP. The shift points alone are worth the purchase. Yes, it does work...bottomline. I ran stock at the 1/8 mile and pulled off a 9.95@70.5mph. It got better with each mod.

I never dyno'd stock. However, I have dyno'd twice modded and here are the results.

FIRST DYNO:First set of mods
2004 RC SB 2WD 5.4L 3V
3.73LS
30" tires on 17" wheels
Magnaflow exhaust
Airaid intake
Superchips 1714 tuner
SAE #'s: 260HP and 300 ft lbs TQ at the wheels
All pulls done with OD off in 3rd gear.
Best 1/8ET: 9.53@73mph

SECOND DYNO: New mods (cat removal, new tuner and pullies)
04 RC SB 2WD 5.4L 3V
3.73LS
28.5" tires on 18" Lariat wheels (set final ratio to 3.92)
Magnaflow exhaust(rear cats removed)
Airaid intake
Superchips Excalibrator tuner (set to 93 TRACK TUNE)
Underdrive pullies
SAE#'s: 279HP and 333ft lbs TQ
Best 1/8ET: 9.10@76.2mph with spin

Since that run I have done the following mods:
Fully insulated intake assembly
Plasma Ignition Booster
Electric fan system
Ram Air set-up (homemade from Lowes)
Added 5 gallons 100 octane to tank (tune is good up to 96 octane)
10 gallons 93 + 5 gallons 100 = 96ish octane
Should break 8's ALL MOTOR
Have not dyno'd or been to track since these mods. So, I expect even higher #'s.

I didnt mean to hi-jack this thread. I was hoping to shed some light on mods and HP gains. The right mods WILL WORK. All dyno pulls should be done in 3rd gear with OD off. Those #'s are LOW if it's a 2WD. Not too bad if it is 4WD with big ol tires and such. Just my 2 cents.

 

4X4 with 18" tires

 

the 4X4 should make no difference on a dyno. but the bigger tires and rearend ratio would.

 

Do the tuners eliminate the 2nd gear change to the throttle input that the stock trucks have (for starting off in snow/mud)? The electronic throttle severely reduces the throttle input on my truck when the shifter is put in 2nd gear so it seems like you wouldn't get good numbers in 2nd.

 

4x4 does make a difference; more parasitic loss on 4x4's. Every dyno I have seen, the same models with only 4x4 vs 4x2...the 2WD dyno'd more HP to the wheels.

Gear ratios MAY only make a slight difference. Bigger tires and wheels definitely makes a big difference.

 

The dyno itself makes quite a difference too, the same vehicle I've seen in person will make completely different numbers on a DynoJet compared to a MustangDyno. Some numbers from dynos are also completely corrected for gears/tire sizes/ambient temp/etc. Just keep that in mind.

 

i dyno in reverse and still get the same numbers