Taken from (heavychevy) thread in 996TT forum below is why this matters:

WHY IS WEIGHT LOSS IMPORTANT?!?!?!?!?!?!
Ive been wondering how weight loss translates in terms of hp so I did some rough calculations that might be interesting to you all. If you assume a 3500 lb car with 500 hp, each 100 lbs of weight loss translates to this amount of power. Math experts please correct me if im wrong.

Weight....actual HP.........lbs/hp.............relative power
3500.......500.................7.0................ .500
3400.......500.................6.8................ .514.7
3300.......500.................6.6................ .530.3
3200.......500.................6.4................ .546.9
3100.......500.................6.2................ .564.5
3000.......500.................6.0................ .583.3

So a 300lb weight loss is the equivalent of adding 47 hp if my calculations are correct. Interesting to note that going from 3500 to 3400 is only equivalent to 14.7 hp and going from 3100 to 3000 is equivalent to gaining 18.8 hp. It would be interesting to make tables like this for cars with 600hp and 700 hp and so on. (rwm514)


Please post weight loss items here:

Item - Amount saved

Anti Gravity mid ATX-30 (6.5 lbs) - 45.5 lbs
Factory carpet floor mats (All 4) - 4.1 lbs
Rear seats upper/lower (belts installed) - 18.9 lbs
Soul cat deletes (Item weighs 7.9 lbs) - 7.9 lbs saved

Current total savings - 76.4 lbs

 

Seats - and may be worth it more so depending on what the car came with. Exhaust is a huge area. Radio, depending on how serious you're getting.

Little to no benefit from body panels.

Wheels and brake rotors not only have significant weight saving potential but rotating mass weight savings which gets a gold star next to the weight savings in this area.

HVAC - again, depending on how hardcore and then there is sound deadening and carpets.

 

Everything - ever see the inside of a race car?

 

Rear seats upper/lower plus hardware. Seat belts remain installed.

18.9 lbs saved

 

Four factory floor mats - 4.1 lbs saved

 

Soul Performance Products Catless Delete Pipes weigh 7.9 lbs. Factory cats 15.8.

7.9 lbs saved

 

Yup, replaced/ removed cat on my TRuxton R with BC Customs x pipe and GP slipons. She now sounds purrrfect and lost about 25.

 

pics of interior?

 

TX Gold would you mind posting a picture of your rear seat area with deleted rear seats? I want to see how it'll look without the seats