I agree the weight savings is good, but to take a 60lbs system down to any weight # that is useable is going to take away from the function. It is impossible to reduce weight without reducing muffle and baffling unless you switch to an exotic metal and spend a ton of cash. That or you're happy running a 2.5" aluminum straight pipe. Either way, you'll likely cut enough back pressure to adversely effect your HP and you'll have to wear ear plugs.

Moral of the story, look for somewhere else to cut weight, there is much lower hanging fruit.

 

what noticeable improvement will you get from shaving 50-60 lbs? if you wanna cut weight, lose weight (unless you're really skinny) or run 1/4 gas all the time. not really worth it i think

 

Fuel starvation is a common issue for a lot of guys who autocross on anything less than 3/4 of a tank.

The guy was looking for numbers, not comments on if he should or shouldn't modify his car.

Less weight is almost always a good thing. Glad to see your looking for something functional instead of bling.

I haven't decided if I'm going to build a custom single exhuast or buy something aftermarket.

 

everything about this statement is wrong. Please do research before trying to be a smartass.

 

every little bit adds up. maybe he already removed the spare tire and tools ? That is almost 40-50lbs. If you said the same thing about that and this now your saying 100lbs is useless. Maybe you just make so much torque it doesnt matter

 

single titanium catback will save you about 30-35lbs.

test pipe will save about 3-5 lbs

aftermarket header - ?

You could probably trim about 45-50 lbs off the entire exhaust system by switching out parts...I dont see 60+ lbs being saved though.

 

This!!

For goodness sake guys. I never would have imagined a guy getting so much grief on an enthusiast site from trying to save weight.

Every little bit adds up. 50lbs from the exhaust, 25lbs from the wheels, 10lbs from the tires, 10lbs from the flywheel, 20lbs from the spare tire and hardware, etc etc. Before you know it you've trimmed well over 100lbs from the car. This DOES make a difference - especially the rotational weight saved.

 

Sure, if you're racing the car. Why stop there though? Why not pull out the passenger seat, AC, stereo, etc. If you are driving to work, 100 pounds from a 2800 pound car is nothing. Its all about why you are doing it. Thinking you can change exhaust and feel some magical difference is not right. Just want to drive that point home.

 

Back pressure, the myth
Testing of reduction of back pressure
Myth of "needing" back pressure

in other words, back pressure is never never never good. Velocity is key.



and I got a $5 piece of straight pipe that exits behind the rear axle, which is bolted to a berk HFC. Loud as all heck, but for the track, it's good. Probably saved 45lbs+, since my "cat-back" weighs 5lbs, max.

 

^^ what do you have a teardrop?