Car Mods: Page 4

Darin Cosgrove, founder of Ecomodder.com, used just cardboard, aluminum and duct tape to make his DIY "boat tail", a mod that creates aerodynamic efficiency. The tail, attached to his 1998 Pontiac Firefly, extends the car by 4.5 feet and increases the fuel economy to 64 MPG.

Ok, probably not the safest idea. Around 1:03 or so it appears that the rocket could have easily hit him, after bouncing off a side wall.

Beautifully constructed wooden SuperCar Maniwa manufactured by Sada-Kenbi. The wooden Japanese car goes for $44,000. Wow. That's a lot for a toy. However, this baby is street legal and can go up to 90km per hour (that would be 55mph).

More redneck fun. Bob Moravitz plus family and friends have created an 8 hour event of propelling vehicles off cliffs. Held yearly, admission is free but donations are encouraged (to cover insurance costs).

BBC show Top Gear has built a homemade electric car in just 18 hours: the Hammerhead Eagle i-Thrust.

Flickr user MR38 has posted a set of photos of bumper cars made street legal, as displayed at the annual Cruisin' Grand festival in Escondido, California. This mini cars were retrofitted with 750 cc Kawasaki motors. Cool auto mod.

I'm not sure about the who, what, where, when or how...but man, this mountain climbing car is cool. More car customizations/mods: (HowTo).

The EcoJet. No, it's not a economy-sized jet engine aircraft. It's Jay Leno's version of an eco-friendly car. A very, very fast eco-friendly car.

This is no ordinary tractor. Nor is it an ordinary Fiat. Not by a long shot.

A group of industrious, like-minded friends built this amazing DIY metal motor home from scratch, converting an old semi into luxury-style living.

The Panzerbike. A monster bike like no other. The Frankenstein of all motorcycles. This big boy has an 800-horsepower engine, and weighs in at 4.74 tons.

When you think about car customization, you think about installing a stereo or a turbocharger or something like that, but Joe Harmon and gang have gone a step further and built their own custom car - literally woven out of wood.

Insane, extreme Japanese custom vans. Click through to Pink Tentacle for links to more image galleries.

Sorry Nissan Land Glider, the BMW Simple makes you look like a Granny car. This prototype truly feels like a car and motorcycle combined (plus it bears an amazing resemblance to the Tron light cycle).

World's most expensive car mod? A wealthy Swede began with a 1973 Lincoln Continental, and three years and one million dollars later, ended up with a real life replica of the famous batmobile.

Every explosive loving, thrill seeking, roller coaster junkie's childhood dream: the jet powered merry-go-round. This steam punk inspired machine is brought to you by Brooklyn-based arts collective The Madagascar Institute. More images below the video.

From Jalopnik:

Genius or retard?  Such an impossibly fine, fine line.

Jake Layall combines the motorbike and unicycle to create the R.I.O.T Wheel (Re-Invention-Of-The-Wheel). Weighing in at 1100 pounds, Jake spent 18 months building his creation for Burning Man back in 2007.

Customize your vehicle, watch this video tutorial on how to install a billet grille set on a 2008 Toyota Tundra. This shows the process of installing the complete Carriage Works brand billet grille on your Tundra.

The EVMODE electric only option is a must have Toyota Prius Hybrid accessory. Prius owners, improve hybrid MPG, activate the factory EV MOD option for electric only mode. Known as EV Mode or EVMODE allows you to switch to electric-only mode for increased fuel efficiency and performance up to 34mph. Easy installation with no wire cutting necessary. Make your green car more eco-friendly. Stop using gas!!

Watch this "Grease On Your Hands" video tutorial from the Washington Post to see how to install a strut brace on your car properly.

This instructional video will show you how to remove the bumper sticker of a failed candidate, such as McCain/Palin. Now you can stop broadcasting failure without leaving a sticky residue.

Check out this automotive video tutorial to see how to relocate breathers on a Toyota FJ Cruiser. If you own a Toyota FJ Cruiser and you plan on getting it wet, you're going to be doing a scuba mod, which is nothing more than relocating the breathers up to a higher location. In this video, you will see how to relocate the breathers to your vehicle's gas fill area, to keep them neat and tidy and out of the way. This step-by-step presentation will get you to move those breathers with the scuba...

Reach the lights at the end of the tunnel, or better yet... be the lights at the end of the tunnel. Check out this video tutorial to see how to install off-road lights onto a Toyota FJ Cruiser. You will see exactly how to install Baja Designs' off-road lights onto that Cruiser in preparation of running the Baja 1000 Course. These lights only make things stronger and more clear. Forget simple automobile headlights, do you want to see that tree up that hill or not? This will take some time,...

This automotive performance customization tutorial shows you how to install Road/Race Motors (RRM) grip springs in a 2008/2009 Mistubishi Lancer. Grip springs are higher performance suspension components. If you bought RRM grip springs for your Lancer, this tutorial will show you how to install them.

Check out this instructional video that shows you how to install the AMP Research Power Step, the ultimate retractable running board for your truck or SUV. This tutorial provides all the information and tools you need to know. Just follow the simple step by step instructions and learn how to install the AMP Research Power Step.

Ballin' on a budget? Mad Mike shows you how to get a bigger tire on the back of your car. Watch this car tutorial video that illustrates how to figure out a measurement for getting a bigger tire for the back wheels of your car. Follow the simple instructions outlined in this tutorial video and learn how to get bigger tires for your car.

This truck customization tutorial shows us how to cut out the fenders on a 4x4 to allow for bigger tires.. fender trimming redneck style. If you plan to do any hunting or serious off road driving you'll want to consider widening your fenders for bigger tires like this guy.

This fuel conservation tutorial will teach you a simple hack that will battle $4 a gallon, with magnets. Learn how to boost gas mileage and increase fuel economy by installing fuel line magnets in your vehicle.

The Mighty Car Mods team show you how to paint your cars brake calipers to improve the appearance of your mighty ride. Unfortunately, you won't get better brake performance, but they will look good!

Now is the time to put the piston and cylinder to the case. Seals have been installed and now comes the top end. So watch and see how to mate the 54mm cylinder to the stroker crank on the Honda Elite DIO scooter engine project.

This scooter modification tutorial gives you some tips on how to bolt a velocity stack to a 28mm Mikuni carburetor on a Honda Elite DIO scooter exhaust system. The video doesn't cover the actual install but gives tips on ways to make the connection easier.

This engine modification tutorial gives some tips on installing or taking off your two stroke pistons from the crankshaft in a Honda Elite DIOS scooter motor. Always keep the parts clean and take your time and do the job right. Remember that the piston always goes on with the arrow on the piston crown, pointed towards the exhaust port. This modification may seem daunting at first, but with the two stroke piston installation tips given in this video it should become much easier.

In this video series you will see how to install a stroker cylinder kit in a Honda Elite DIO scooter. This engine modification will increase the power and speed of your scooter. It's a detailed process so make sure to watch all parts of installing the stroker cylinder in the DIO scooter.

This engine customization tutorial shows you the most basic way to install a 10k resistor in the ICP sensor of a 2001 F250 7.3L Powerstroke Diesel. Changing the resistor in the ICP sensor will trick the PCM into thinking it's not getting enough oil pressure and boost the pressure giving you more power. There are many ways to install a 10K resistor in a powerblock diesel ICP sensor but watching this video will give you the basics.

Would you like to see well beyond your high beams at night? Or see thru dust and light fog when you're behind the wheel and there's no where to pull off? We found an easy way to do it: FLIR's PathfindIR.

This motorcycle customization tutorial shows you how to modify the rear mud guard in the wheel well of a Kawasaki KLR 650. This is for riders who have installed an aftermarket exhaust that is rubbing on the wheel well. If you have the stock exhaust, you shouldn't need to do this modification, but if you have rubbing issues, watch the video and learn to modify the rear wheel well of your KLR650.Tools you'll need:Philips screwdriverSawRazor blade

In this motorcycle tutorial you will learn how to calculate the manual valve shim size. Both exhausts have the same spec and both the intakes have the same spec so the video only shows one side being done.The shims aren't made in 251, 252, 253, 254. It's either 250 or 255.The two boxes represent the clearance and the shim. The two added together is the total area you have to work with. Subtract the desired clearance, this is the space left to be taken up by the shim. That's all there is to...