2003 4.0 5spd Dyno run Before/After K&N

caser876 · 01-31-2010, 10:48 PM

Alright, this morning i went out to my uncles shop with my new intake kit. A K&N 77 series. ( http://www.autoanything.com/air-inta...A1913A0A0.aspx ). I waited to go to the shop to do it because his co-owner has a chassis dyno and i wanted to see what the kit did for the truck. We get it on and strapped down and do a couple pulls to make sure we had a good curve. All 3 very very close, basically on top of eachother like they should be. So we shut her down and change the intake, put the shiny new kit on. what happened when we did the second set of pulls surprised us all.
I'll let y'all know its a 03 4.0 5spd 4wd 4.10's and 265/70R16 new winterforce-which i know soak up some power. Otherwise completely stock.
Nobody expected to see the HP and Torque DROP. Yes it actually was lower than stock. Not a big difference but still, the curve was shifted to the left, which means less power in the useable rpm range. Just for fun we even turned the intake tube up and blocked off the engine heat so it was getting fresh cool air. The torque was also lower, worse than the HP. It dynoed at 150 HP. That shows how much the drivetrain takes away, and every car I've seen has had a very similar drop from what the factory rating is.
Pretty much K&N is getting a call about their HP gaurantee and I'm sending it back for a drop in replacement-that at least isn't $300 and retains factory power. I would not recommend buying this kit for a ranger although it is high quality components. Sorry to give y'all the news bout how much your intake doesn't do but, the dyno don't lie.
(And before the comments, the truck is actually black and was spotless 5 days ago. it's averaging 12 deg here so im not washing it to have it froze solid on me)

caser876 · 01-31-2010, 10:50 PM

http://s766.photobucket.com/albums/x...=Dynosheet.jpg
http://s766.photobucket.com/albums/x...131101223b.jpg

snake · 01-31-2010, 11:00 PM

Sweeeeet. Good info.

**TheTopher** · 02-01-2010, 05:34 AM

Good info. Make sure you follow up and tell us how much more often, if at all the K&N makes you have to clean off your maf sensor.

**mjonesjr** · 02-01-2010, 06:45 AM

Thanks for the info.

LearjetMinako · 02-01-2010, 08:39 AM

Thats strange. When I had my K&N intake on the 2.3L, it ran better on the top-end. But I don't run it anymore becuase of poor filteration of smaller particles.

Another thing I can sell.

Chance · 02-01-2010, 09:14 AM

I knew it.

I always wondered if on their "proven dyno sheets" if the difference was made by the stock run taken without a fan, and the k&n run was taken with a fan...

Dunno.

02-01-2010, 01:49 PM

Finally someone does it right and dynos a freakin intake!!! Well done man, its pretty rare to find an actual test like this, hope it saves alot of people alot of money!

**kennykenny** · 02-01-2010, 02:33 PM

There is A LOT of guys on this site that are going to love reading this. This argument has been going on forever.

mentalbreakdown00 · 02-01-2010, 02:35 PM

I can tell you from experience that manufacturers will dyno something stock, do some mods to it like exhaust, chip, etc. dyno it, then add the said component and say wow!! look what it did.....

Toms01PSD · 02-01-2010, 07:15 PM

Can I copy this to another forum? I'd love to read what they write after seeing this.

caser876 · 02-01-2010, 09:35 PM

Quote:

Originally Posted by Toms984x4

Can I copy this to another forum? I'd love to read what they write after seeing this.

Yeah go ahead- Just post the link I really want to see what everybody has to say also.

01-31-2010, 10:48 PM	#1
caser876 Junior Member Join Date: Apr 2009 Location: Albany County, NY Year: 2003 Make: Ford Model: Ranger Engine: 4.0 Class: 4x4 Used For: Fun, Daily Driver Posts: 33 Rep Power: 9 iTrader: (0)	2003 4.0 5spd Dyno run Before/After K&N Alright, this morning i went out to my uncles shop with my new intake kit. A K&N 77 series. ( http://www.autoanything.com/air-inta...A1913A0A0.aspx ). I waited to go to the shop to do it because his co-owner has a chassis dyno and i wanted to see what the kit did for the truck. We get it on and strapped down and do a couple pulls to make sure we had a good curve. All 3 very very close, basically on top of eachother like they should be. So we shut her down and change the intake, put the shiny new kit on. what happened when we did the second set of pulls surprised us all. I'll let y'all know its a 03 4.0 5spd 4wd 4.10's and 265/70R16 new winterforce-which i know soak up some power. Otherwise completely stock. Nobody expected to see the HP and Torque DROP. Yes it actually was lower than stock. Not a big difference but still, the curve was shifted to the left, which means less power in the useable rpm range. Just for fun we even turned the intake tube up and blocked off the engine heat so it was getting fresh cool air. The torque was also lower, worse than the HP. It dynoed at 150 HP. That shows how much the drivetrain takes away, and every car I've seen has had a very similar drop from what the factory rating is. Pretty much K&N is getting a call about their HP gaurantee and I'm sending it back for a drop in replacement-that at least isn't $300 and retains factory power. I would not recommend buying this kit for a ranger although it is high quality components. Sorry to give y'all the news bout how much your intake doesn't do but, the dyno don't lie. (And before the comments, the truck is actually black and was spotless 5 days ago. it's averaging 12 deg here so im not washing it to have it froze solid on me)
	Tweet

01-31-2010, 10:50 PM	#2
caser876 Junior Member Join Date: Apr 2009 Location: Albany County, NY Year: 2003 Make: Ford Model: Ranger Engine: 4.0 Class: 4x4 Used For: Fun, Daily Driver Posts: 33 Rep Power: 9 iTrader: (0)	http://s766.photobucket.com/albums/x...=Dynosheet.jpg http://s766.photobucket.com/albums/x...131101223b.jpg
	Tweet

01-31-2010, 11:00 PM	#3
snake Member Join Date: Aug 2007 Location: canyon lake tx Year: 2002 Make: Ford Model: The mighty Ranger Engine: 4.0 Class: 2WD Used For: cruising for chicks Posts: 1,266 Rep Power: 14 iTrader: (0)	Sweeeeet. Good info. __________________ 2002 XLT in wedgewood blue, 4.0 auto, 4 doors (no waiting) MP3, 3:55 limited slip rear, payload package, factory installed trailer hitch, side step bars. Built 7/31/2002, shipped 8/19/2002, purchased 9/25/2002 sold 8/2011. 2011 F-150 crewcab ecoboost twin turbo. Purchased 7/13/2011
	Tweet

02-01-2010, 06:45 AM	#5
mjonesjr I dance with the Devil... Join Date: Feb 2004 Location: Salem, IN Posts: 4,994 Rep Power: 10 iTrader: (6)	Thanks for the info. __________________ I shall not surrender... I shall not retreat... I will stand here and fight... Or I will stand here and die! All men are created equal, then a few become firemen. Support Our Troops! TRS Facebook Page
	Tweet

02-01-2010, 08:39 AM	#6
LearjetMinako Member Join Date: Aug 2007 Location: Oklahoma City, OK Year: 1996 Make: Ford Model: Ranger XLT Engine: 2.3L 140ci Class: 2WD Used For: Work & Daily Driver Posts: 2,180 Rep Power: 18 iTrader: (2)	Thats strange. When I had my K&N intake on the 2.3L, it ran better on the top-end. But I don't run it anymore becuase of poor filteration of smaller particles. Another thing I can sell. __________________ 1996 Ford Ranger XLT, 2.3L 130,xxx miles 2006 Kawasaki KLX250s, 250cc 8,xxx miles Honesty: Telling your girlfriend that she has small boobs comes at a price
	Tweet

02-01-2010, 09:14 AM	#7
Chance RIP - 10/7/2010 Join Date: Nov 2008 Location: Roseburg, OR Posts: 2,255 Rep Power: 15 iTrader: (0)	I knew it. I always wondered if on their "proven dyno sheets" if the difference was made by the stock run taken without a fan, and the k&n run was taken with a fan... Dunno. __________________ '79 Scout '98 Teggy Don't know how to drive an automatic Rest in peace our brother - we will miss you. 10/7/2010 - The Ranger Station
	Tweet

02-01-2010, 01:49 PM	#8
eric17mx Lurker Posts: n/a	Finally someone does it right and dynos a freakin intake!!! Well done man, its pretty rare to find an actual test like this, hope it saves alot of people alot of money!
	Tweet

02-01-2010, 02:33 PM	#9
kennykenny Premium Member Join Date: Aug 2007 Location: Manahawkin, NJ Year: 1998 Make: Ford Model: Ranger Super Cab Engine: 3.0 Class: 4x4 Used For: Driving Posts: 999 Rep Power: 13 iTrader: (4)	There is A LOT of guys on this site that are going to love reading this. This argument has been going on forever.
	Tweet

02-01-2010, 02:35 PM	#10
mentalbreakdown00 Member Join Date: Mar 2009 Location: Tallahassee, Fl Year: 1995 Make: Jeep Model: XJ Engine: 4.0 Class: 4x3 Used For: hauling, dirty work/ daily ride Posts: 1,254 Rep Power: 11 iTrader: (0)	I can tell you from experience that manufacturers will dyno something stock, do some mods to it like exhaust, chip, etc. dyno it, then add the said component and say wow!! look what it did..... __________________ It only hurts 'till it quits....my dad Insanity; repeatedly doing the same thing expecting different results.... Albert Einstien
	Tweet

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode