I've been looking into getting an exhaust, but i havent found anything thats really lighter that the oem exhaust except the jic titanium ($1300). I recently found out that there is a magnaflow stainless exhaust that weighs only 12 pounds. Is this true? If not, then how much does it weigh. If anyone has this exhaust, how much hp did it add? If anyone knows of a cheap exhaust that is lighter than stock please tell me.

 

Nobody has that exhaust yet (unless as a tester) - according to the Magnaflow site it's "coming soon".

 

Actually Mazdatrix has the magnaflow exhaust. I emailed them a few weeks ago about this as I was interested in the same thing, they weight the system, and despite it's smaller cans it still came out at 37 lbs. (vs. 39 lbs. for the stock system).

 

Thats not a big decrease at all. I hope it adds some hp.

 

The Magnaflow exhaust in question is the stainless steel one.. they never released the light titanium version

 

Yes, i'm asking about the steel one. Anyway, the titanium will definitely cost considerably more.

 

Rx8store.com uses the magnaflow catback. I bought it 6 months ago and I love it. It is lighter(alot easier to lift then stock is what i'm going off of) it sounds amazing, much like the racing beat with a little more low end grunt. As for power, my butt dyno doesn't tell me anything.
I'm not too sure if it's the same magnaflow you're talking about but you can look at the pic attached. It says magnaflow across the mufflers.

 

The rx8store version uses the round Magnaflow mufflers and has a 3 inch piping from the cat back to welded "y". The twin tips are welded in place. Nice system, all connections are flanged and a snap for removal/re-install. I have it and love it.

The system from Magnaflow uses the oval mufflers, and the exit tips clamp onto the muffler outlets. A friend has this version via Mazdatrix. Sound-wise there is little, if any, difference to my ear.

 

I believe thats the same one. The one i am talking about IS a MAGNAFLOW exhaust, not one based upon it. Should be under $600 with 4 inch tips. steel. Is that the one you have? or do you have the rx8store version of it?

 

RM - Mine is the rx8store version. It's all stainless steel.

 

Since all the exhaust give around the same power, i figure i'd rather look for a lighter one, instead of one that gives 1 more hp and is heavier. i'd rather be 24 pounds lighter than stock with the cork sports exhaust and rp supercat than produce 2 more hp with a different setup.

 

I have a question... and it may be dumb... but work with me

Why would you want a lighter exhaust? Sure, dropping a few pounds may make the car a tad faster... but, won't it upset the handling? If the car is setup to be pretty much 50/50 from the factory... reducing the weight in the rear by 10-15 pounds by switching out the exhaust would shift the weight bias to the front and create an understeer, wouldn't it?

 

good point

you could relocate the battery to the trunk if you wanted too...upgrade the grounding system while your at it

btw the chassis ground is miserable

 

Do you mean the factory grounding? That is contrary to people who installed a grounding kit and said it does not make any difference.

 

performance wise the grounding is fine but for audio/video applications it lets crazy noise in...so depending on what u are doing it is beneficial

 

I'm not sure where there is more weight (front) , but i know that the car isnt exactly 50/50. First of all, the whole replacement of the exhaust and cat would save 24 pounds. If the front is heavier, this would disrupt the 50/50 balance, but if the rear is, it would only help it. BTW, if anyone knows the exact weight distribution please post. Additionally, adding parts like a lighter intake, and replacing that bar that goes over the engine (forgot what its called) can help lighten the front as well. If you lighten the rear, you can also lighten the front. The cat is closer to the fron than the middle, so a balance can still be kept by replacing the exhaust can and intake. Adding 10 or so hp while reducing the weight by 30 and still maintaining a close weight ditribution is possible, and great. :D

 

The precise balance of the car does not care for 10 lbs - the gas level in the tank continuosly changes and it weights much more than what you save even with a titanium exhaust. So if weight is a concern, you can run the gas tank from middle down and save lots of weight You'll just have to stop more often by the gas station....

 

Exactly. Such a subtle change in weight wont dramatically effect the balance the car already has

 

So whats the verdict is the RX8garage one the exact same or is it lighter than the Magnaflow that Mazdatrix has?