Just got it today, installed it and re-gaped the plugs. Stuffforyourranger.com has them for the 4.0L if you ask. Check out the pics

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(SOLD) 2003 Ranger 4.0L V6 FX4
2001 F150 Supercrew Triton V8 (DD)
2008 Fusion 3.0L SEL V6 (my baby)
1992 Taurus SHO MTX (my toy-almost Supercharged)
2004 Nissan Murano SL AWD (Wife's car)

Did you notice any differences?

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x2

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2002 Tremor 2wd 3.0 4.10 L/S
6000k HID High/Low beams
255/70R16 General Grabbers AT2
Explorer OHC

My truck already idled pretty smooth but it feels even better now. At a couple of stop lights it was hard to tell the truck was on. The Tach sits completely still just under 1k rpms. Haven't really noticed anything it terms of extra power. I bought it for the possible help in MPG as the truck is my DD. I drive about 45 miles round trip to work so an increase of 1 or 2 consistent MPG's would be nice. I just changed the plugs and wires and didn't know how many miles were on the coil pack (bought the truck with 99,000 miles). I figured why not. I'll let you know when I figure out the MPG.

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(SOLD) 2003 Ranger 4.0L V6 FX4
2001 F150 Supercrew Triton V8 (DD)
2008 Fusion 3.0L SEL V6 (my baby)
1992 Taurus SHO MTX (my toy-almost Supercharged)
2004 Nissan Murano SL AWD (Wife's car)

Nice

Best thing I bought for the truck

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What benefits have you seen from yours?

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(SOLD) 2003 Ranger 4.0L V6 FX4
2001 F150 Supercrew Triton V8 (DD)
2008 Fusion 3.0L SEL V6 (my baby)
1992 Taurus SHO MTX (my toy-almost Supercharged)
2004 Nissan Murano SL AWD (Wife's car)

I saw a little with the MPG.

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update:

I did notice better throttle response at highway speeds. Nothing different between 0-55 mph other than the smooth idle. One thing I have a lot hope for is the MPG's. I installed the coil pack with a little over half a tank and 170 miles. I have put about 80 miles on it and its just below 1/4 tank. I usually get about 250 miles on a full tank and I'm at 250 with just under 1/4 a tank. It will have to be a full tank before I know if it really worked.

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(SOLD) 2003 Ranger 4.0L V6 FX4
2001 F150 Supercrew Triton V8 (DD)
2008 Fusion 3.0L SEL V6 (my baby)
1992 Taurus SHO MTX (my toy-almost Supercharged)
2004 Nissan Murano SL AWD (Wife's car)

will this work on a 3.0

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2003 Ranger totally stock for now ,mods coming soon .
SOLD 1996 Mazda B3000

Yep, Stuffforyourranger.com has them for the 3.0L

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(SOLD) 2003 Ranger 4.0L V6 FX4
2001 F150 Supercrew Triton V8 (DD)
2008 Fusion 3.0L SEL V6 (my baby)
1992 Taurus SHO MTX (my toy-almost Supercharged)
2004 Nissan Murano SL AWD (Wife's car)

thanks for the link

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2003 Ranger totally stock for now ,mods coming soon .
SOLD 1996 Mazda B3000

nice..is this the only mod you have so far?or do ya have exhaust, intake, programmer? and how much was it for the 4.0l?

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"I thought this was America!"-Randy Marsh

2003 fx4 4.10, maxed tbars, 5000k HIDS 3157 silverstar bulbs, expo ohc, alons mag light holder, 06+ tails, throttle cable mod, air box mod
360tag:BEEFS7A7US

is it worth doing on a truck with 27k?

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08 Ranger
-Full Kenwood system
-32" Mud brutes
-3" superlift lift kit
-4.0L-Amsoil 0-W30-Air silencer mod w/ Spectre filter
04 F250
-Alot of Goodies

I have a cone filter. It was not my choice the previous owner ripped out the stock intake. I'm still up in the air as to what I want to do with the intake.



I was going to say no....but I just got through my first tank of gas and now I would say not only yes but HELL YES!

***Update***
The idle is still smooth as a babies butt. The power is normal during city driving but it feels much better at highway speeds. The MPG's are what I'm most impressed with. After the first full tank of gas (Approx. 30% City and 70% Highway) I got 274.4 miles on 14.2 gallons = 19.3 MPG's!!!! I drove it like normal, wasn't easy on it at all. 80 MPH on the highway with cruise control, and normal driving in the city.

MPG's prior to the Screamin Demon Coil pack were between 16 and 18 (more 16's and 17's than 18's).

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(SOLD) 2003 Ranger 4.0L V6 FX4
2001 F150 Supercrew Triton V8 (DD)
2008 Fusion 3.0L SEL V6 (my baby)
1992 Taurus SHO MTX (my toy-almost Supercharged)
2004 Nissan Murano SL AWD (Wife's car)

this is very tempting I wish we could get a group buy or I wish we could get a sponsor to give us a slight price break

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08 Ranger
-Full Kenwood system
-32" Mud brutes
-3" superlift lift kit
-4.0L-Amsoil 0-W30-Air silencer mod w/ Spectre filter
04 F250
-Alot of Goodies