The problem i see. They fall flat on their face after 5k rpm.

I hope an intake and exhaust will help that.It's not a problem for daily driving, but it would be nice to have more top end.

I need to test drive it, to get a feeling of the top end.

 

They dont fall on their face. Sure, they lose a few horsepower, but if you want to see falling on its face, you should check out some of the other turbo motors in various applications that lose 60-100hp from peak HP to redline.

Regardless, an intake and exhaust wont touch that. Horsepower drop at high RPMs is a function of hotside A/R, nothing more, nothing less. The biggest restriction to exhaust flow that ANY turbocharged motor has is the hotside.

You can have a turbo with excellent response and low end torque, or you can have a top end power monster. You can't have both.

 

So lets see the bulletin that says that the ecoboost is programmed to run different for the first 3000 mile. I have heard rumors of dealers telling customers that. Let's see it in Ford blue ink.

 

UPDATE:

Just got off the phone with Ford and K&N.

In short, we're going to re-run the dyno test with equivalent 5.0L and 3.5L GTDI F-150 trucks at K&N with a Ford engineer present.

Instead of a Dynojet, we're going to use a Superflow chassis dyno that uses an eddy current to simulate a load on the vehicle - like when you're pulling a trailer.

We're trying to figure out how quickly we can get both trucks together in California.

Very thankful to Ford and K&N for being such good sports about this and wanting to do the right thing. But that's how we roll (sorry, bad dyno pun).

Posted by: Mike Levine | Apr 8, 2011 1:42:37 PM

page 3 of comments section:
http://news.pickuptrucks.com/2011/04...ge/4/#comments