Saturday, November 11, 2006

Lotus Elise Intake installation

Last week I mentioned that I had a Green Filter on order from Blackwatch Racing and that I'd be using it in conjunction with a slight intake modification. Well, it arrived yesterday and I was able to get it installed this morning. Aside from the airbox not wanting to snap back together easily it was a very easy install. No dyno numbers or reliable tests to suggest any power increase but it does feel a bit stronger and sounds a LOT meaner on the second cam. Below are some before/after videos and some photos detailing the installation.

Crummy cellphone videos

Installation of the Green Filter and modifying the Elise intake system...
1.Start out by jacking the car up (be careful, don't want this to happen) and removing the rear driver's side wheel. You'll need to remove the back wheel well liner.

Lotus Elise Suspension

The liner is held on by six plastic screws like the one in the photo below...

Click on the photo below to see the location of the 6 screws you'll need to remove. The liner fits in the wheel well pretty snugly but with a little work you can work it free.

2.Once you have the wheel well liner off you can see how the factory airbox gets it's outside air. The snorkel thats attached to the airbox is pretty restrictive, we'll be removing it to free up the intake and hopefully add a bit of power.

Lotus Elise Intake Airbox

To remove the snorkel you need to pop a clip (similar to the screw/plug pieces that hold the wheel well liner on) off the top of the airbox. The clip is actually a screw in piece but due to its location and its tendency to just spin I went ahead and pried it off. I couldn't snap a photo of it on the car but you can see the clip you need to work with by clicking on the photo below.

Lotus Elise Intake Snorkel

3.Once you have the intake snorkel off you can go ahead and open the airbox using the two silver clips, click on the photo to see detail of the clips.

Lotus Elise Airbox

Pull out the stock Toyota airfilter and see just how dirty it is.

The Green Filter is obviously quite different. It's reusable and allows air to flow a world better than the stock air filter. It comes pre-oiled so its ready to pop in right out of the box.

Lotus Elise Green Filter Airfilter

Put the new airfilter in and work on getting the airbox closed again. Because the new filter's gasket is a bit thicker this is a lot tougher than it sounds, work with it though and you can get it to seal correctly. Once the airbox is back together you can work on getting the wheel well liner and wheel back on the car, their installation is the reverse of their removal.

Once you're done go ahead and take the Lotus out for a quick run through the gears. The new sound is pretty cool. The Lotus Elise / Exige isn't exactly quiet to begin with, but this intake modification gives it a really throaty sound once it hits the cam changeover at 6,200 rpms. I've still got the stock Lotus exhaust but I can only imagine how great this will sound with an aftermarket exhaust in the near future. I don't think this netted a big power increase, but it does feel just a bit stronger.

Thats it for now. I don't have any plans for the Lotus right now but I may go out and mess with it a little bit in the next couple weeks.

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