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I decided to take out more interior panels out of my 2008 Eclipse GT and weigh them for you guys in case anyone is interested in the numbers. You should also check out the original post for weight reduction here: Weight Reduction

Here's everything I took out:
Center hood vents: .12lbs each
Glove box: 3.4lbs
Radio unit: 5lbs
Windshield pillars: .74lbs each
Tweeter speakers: .18lbs each
Glove box bars: .82lbs and .54lbs
Lower steering wheel column cover: 1.06lbs
Upper steering wheel column cover: .20lbs
Not sure what these are called, but they're under the dash by pedals.
.54 lbs each
Passenger side air bag: 5.86lbs
Rockford Fosgate: .80lbs
Side vent cover: .20lbs each
Dome digital dash: .96lbs
Rear speakers: 4lbs total
Sirius radio: 1.7lbs
Rear pillar covers: .56lbs each
Headliner: 4lbs

Total weight removed: 33.02lbs

My goal is to make it as light as possible with AC still in place. I will be replacing the seats next with lighter 23lbs seats, and I will also weigh the CF hood and hatch and compare the difference with stock once they're delivered. Stay tuned.

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So how's the car look with all that removed? Is it a track car?

I know my buddy's STi swapped Impreza RS had to have the A/C completely gutted because of the swap and he left out all of the A/C stuff and ripped out all of it behind the dash and left the glovebox off, and it sure felt weird to ride in that passenger seat with everything exposed haha

I sure hope this isn't a street car with the airbag system purposely disabled and tampered with.... You'd need to reinstall that passenger airbag and the little clock thing again
 

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Discussion Starter #3
So how's the car look with all that removed? Is it a track car?

I know my buddy's STi swapped Impreza RS had to have the A/C completely gutted because of the swap and he left out all of the A/C stuff and ripped out all of it behind the dash and left the glovebox off, and it sure felt weird to ride in that passenger seat with everything exposed haha

I sure hope this isn't a street car with the airbag system purposely disabled and tampered with.... You'd need to reinstall that passenger airbag and the little clock thing again
Nope, off-road track use. It definitely gives you a more race car feel. You hear everything.
 

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Nope, off-road track use. It definitely gives you a more race car feel. You hear everything.
I bet haha, when I had my rear seats out I could hear my exhaust a lot more

Do you have a four point harness and a roll cage welded in and wear a helmet to justify disabling the air bag system?

I'd really like to see some pics of your track built Eclipse
 

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Discussion Starter #5
I bet haha, when I had my rear seats out I could hear my exhaust a lot more

Do you have a four point harness and a roll cage welded in and wear a helmet to justify disabling the air bag system?

I'd really like to see some pics of your track built Eclipse
I'm getting the four point harness with the seats hopefully some time early next month. As for the roll cage it's being fabricated right now. I'll post pictures soon.
 

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I should have put our old & new hoods on the scale. The difference in weight between the OEM hood and our new VIS carbon fiber one is massive! Great improvement all around.
 

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I should have put our old & new hoods on the scale. The difference in weight between the OEM hood and our new VIS carbon fiber one is massive! Great improvement all around.
How much was the carbon fiber hood?

I've got an aftermarket metal one on mine that flexes when you press hard on the middle lol, so I'm sure it's a little lighter
 

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How much was the carbon fiber hood?

I've got an aftermarket metal one on mine that flexes when you press hard on the middle lol, so I'm sure it's a little lighter
Around $1100 if memory serves. Great fit too, literally just bolted on.
 

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I should have put our old & new hoods on the scale. The difference in weight between the OEM hood and our new VIS carbon fiber one is massive! Great improvement all around.
I would've loved to see that. Really interested. Most of the weight on the GT is at the front, so I'm trying to get as much off there as possible. Looking into CF fenders as well and and a lighter battery. CF hood and hatch will be coming first.
 

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So did you take any performance data before you started removing stuff to see how much performance you gain after losing the weight?
 

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So did you take any performance data before you started removing stuff to see how much performance you gain after losing the weight?
Unfortunately no, and I should've. I use this site instead to determine how much HP was gained with the weight removed. If my calculations are correct, all the total weight taken off equates to about a 12.5HP gain. That added with the CAI and muffler/res delete is a pretty fun combo. I beat a modded E36 M3 with just these mods.

How to Compare Weight Savings to Horsepower Gains | Tuner University
 

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I have a 2007 Spyder GT auto ... I suppose the front/rear weight distribution and corner weights are a bit different than your hardtop.. do you have a rough f/r or corner weight number for your car (stock) to share? relocating the battery is almost always a great move.
 

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I have a 2007 Spyder GT auto ... I suppose the front/rear weight distribution and corner weights are a bit different than your hardtop.. do you have a rough f/r or corner weight number for your car (stock) to share? relocating the battery is almost always a great move.
Spyder GT Auto? Sorry my dude, but that combination is probably the heaviest 4G Eclipse out there
 

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Discussion Starter #16
I have a 2007 Spyder GT auto ... I suppose the front/rear weight distribution and corner weights are a bit different than your hardtop.. do you have a rough f/r or corner weight number for your car (stock) to share? relocating the battery is almost always a great move.
I haven't done any work on this car in terms of static weight distribution, since I've only been going in a straight line. So far the only suspension mods I have are Megan Racing Coilovers, and it's not enough to make the car not understeer, haha. Most of the weight is at the front. I would love to do a rear mounted battery, and I'm also looking for a really lightweight CF hood. Still thinking about CF fenders. I heard they don't weigh much less than stock.

Also, does anyone have any information pertaining to weight of stock headers versus say OBX headers or RRE?
 
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