They did some intake work on a 5.4l Excursion. They put on the K&N FIPK and the Airaid Throttle body spacer (the one that swirled the air). It was interesting b/c I remember hearing when the airaid came out the people w/ FIPK that tried it said they had weird noises with it. Anyway heres the figures that Truckin pulled on the dyno:

before FIPK & Airaid
RPM Horse Torque
3000 152.1 266.3
3200 167.0 274.2
3400 177.3 274.0
3600 182.9 266.8
3800 191.3 264.4
4000 196.0 257.8
4200 199.6 249.6
4400 205.0 244.8
4600 202.6 231.3
4800 200.1 219.0
5000 194.2 204.0

after FIPK & Airaid
RPM Horse Torque
3000 155.2 271.7
3200 158.6 260.3
3400 171.4 264.7
3600 184.5 269.1
3800 192.7 266.3
4000 205.3 269.6
4200 203.3 254.2
4400 205.3 245.1
4600 205.8 235.0
4800 205.6 225.0
5000 199.2 209.2

 

Yes I have seen the article you are refering to. Kinda interesting huh?

I would say that the spacer took away whatever the K&N added. They should have tested after each bolt-on and posted the results seperately.

It looks like the curve got pushed up the rpm band, not good for a truck. It also appears that the power is not delivered as smoothly as stock. Look at that HP spike at 4000 rpm.

Also, the highest torque numbers seem to be below the level of the test for the "after" numbers.

I passed on the Airaid spacer but I am looking at the Granetelli MAF.

Any thoughts?



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Y2K EB Expedition 4x4
K&N FIPK
Gibson SS Swept Side cat-back.
It's all good!

 

I agree with Bart in that they should have tested them separately. We've seen solid 14 hp gains at the flywheel from either K&N's FIPK kit or the Airaid brand of kit on the 5.4 F-150's.

------------------
Mike Troyer
Performance Products, Inc.
National Distributor of Superchips
(540) 862-9515
Email: mtroyer@compuserve.com
Performance Products F150Online Superchip ordering system: F150Online Superchip Ordering System
First National F-150 Online Rally Event Organizer

 

Guess they can't get everything right. It was still interesting none the less