installing the 15609 Magnaflow Cat-back exhaust kit plus the Air Force 1 FIPK and a Microtuner on a 2003 Supercrew w/5.4 Liter V8. In other words how much power can I get from these three items working together. From what I have been reading the Magnaflow gives 20hp over stock. The FIPK gives 18 hp and the Microtuner gives 10% which comes out to 26 hp from a stock 260 hp 5.4 L. Does this mean I will get a total of 20+18+26= 66hp?

 

Flywheel ratings, sure. On the dyno, no, it will be less. But these are the best 3 mods to do to your truck, for the money.

 

Hi wryan,

Good question!

Those are the Top 3 best bang-for-the-buck mods (specifically, the Superchips tuning, the Air Force One intake kit, and the Magnaflow exhaust system), so they are very much well worth doing.

However, no, I'm afraid you can't take the maximum potential peak power gains from each individual modification, add them up and come up with a 66 HP gain from those 3 modifications on an F-150 or Expedition. A 66 HP gain is not a reasonable expectation from those 3 modifications on an F-150.

If you'd like to see what you can reasonably expect to gain with those parts, drop by our web site at: www.TroyerPerformance.com - once the home page loads, click on "Shop," and then scroll down until you see the "Performance Packages" section. Click on the link for F-150's & Expeditions, etc., and then look for our Part# Stage1-MT. That is our Stage 1 kit using the Micro Tuner, and includes *exactly* those parts, and will give you the power gains, etc., when you click on it's link, which will take you to a detailed text description, power gains, etc. It would also be a good idea to spend some time reading thru the rest of our Stage 1 thru Stage 5 performance packages for the F-150 there in that same section, as that will give you a good idea of just what it takes to get to various different power levels without going internal to the engine, there's a *lot* of good information there on our site that I'm sure will help you in this regard.

You can also give us a call here & we'll be happy to go over that with you - our number is listed just below for your convenience. We specialize in this platform, so we can help you with any aspect of improving the performance of your Ford, & let you know what you can realistically expect to see in the way of power gains and performance improvement.

Good luck!

 

HI!... In the "REAL" worls it would be more like :

- AF1 filter kit = 10H.P (flywheel_

- MAGNAFLOW MUFFLER (single muffler swap only) = 7-10h.p (FLYWHEEL)

- SUPERCHIP'S MICROTUNER = around 28H.P (flywheel) on a 5.4. This I know for sure.

Let the flame war begin, but this is just facts that I have learned with experience from these mods.

So IMO you would only achieve about 48H.P (flywheel) MAX with those 3 mods mentioned. Probably closer to 45H.P.

 

Mike,

Thanks for the very informative reply. I have also looked at your website as you suggested and learned alot also. I also saw the post on flywheel vs rear wheel hp formula.

One question I would like to ask is that everyone brings up the fact that the power gains from the add-ons are hp seen at the flywheel. I mean if I have a stock 260 hp at the flywheel and the drivetrain absorbs %25 of that 260hp (which works out to 65 hp), that means I have 195hp at the rear wheels. Doesn't the amount of power the drivetrain absorbs stay constant for my particular truck(65 hp)? So doesn't that mean that if the add ons give me a 50 hp increase at the flywheel this 50 hp should also be seen at the rear wheels? I haven't really done anything to the drivetrain. It still takes 65 hp to turn it and since I added 50 hp to the 260hp that gives me 310 hp, but my loss is still 65 hp which is now approx. %20 loss in the drivetrain. Does this sound reasonable?

Thanks for the help.

 

Hi wryan,

That's an age-old argument/debate, use the search feature & you can see a lot of our previous posts on this.

We see that when the power levels go up *significantly*, the driveline losses, primarily in the automatics mind you, will go up a bit. Where you may see a 65 hp loss at 260-330 HP or so, at 400 HP you may see 69-72 HP loss, etc.

We don't see this anywhere nearly as much with manual tranny vehicles, it's really more in the automatics that we see this. There's a lot of data from 500 HP, 600 HP, & 700+ HP Lightnings, for example, and compared to losses measured at stock power levels, we see a bit more loss at *significantly* elevated power levels. You can help to minimize this to a certain extent by using a full synthetic tranny fluid.