im not hating on the exhaust, and i could buy your little sisters virginity if i wanted to....you know why? because i spend my money wisely. wealthy people are smart with their money(and not HILTON wealthy, but comfortable wealthy), thats why they have it. learn to save a buck when its not needed to be spent, it will get you far in life.

 

was that funny?

 

well if you had money to blow then why not buy a exhaust that saves 20lbs plus its a tiny bit bigger than 3inchs so its good for evos with turbo upgrades. Obviously people who buy this catback can afford it so why come here and tell them to buy cheaper and their wasting money? Its like going to a really nice resturant and tell the people who are eating $50 steak meals to goto Dennys cause you can get a steak for 15 bucks. Dont get me wrong, i cant even afford this exhaust but i do wish i could.

 

na, thats not what i mean. i like your analogy, its a good one, but thats not the same. people who eat $50 dollar steaks generally do it on special occation, or they got tons of money. like i said, to the people with tons of money, go ahead and buy it. BUT, if people could afford everything they wanted for their evo, of course they wouldn't pinch penny's.....

im just saying, most people are young and buying things because of the name....they don't even consider other things because they want to either A) Be able to tell their friends how cool they are with a GReddy exhaust, or B)don't know any better....

and MOST of the people driving this car want more than just an exhaust, and don't have tons of money to spend. i just want to point out to folks that its not all about the name.....

and slightly more than 3" doesn't help anything when the rest of the system is 3"....also, more that 3" is overkill unless you are building a 500whp car. it just allows the exhaust to cool and not flow as well......

again, im not bashing the system, its great....just kinda pointless unless you want to be flashy.

 

It really all matters on what you want. If you really want to be thrifty, just buy a muffler delete pipe for much less money. You will get 90% of the power gain and spend 50% of the cost of a decent exhaust. Or if you wanted to be even more thrifty have a muffler shop make you one and put a nice shiney tip on it for about $100 or less.

The reasons people buy the Greddy Titanium for the Evo are:

1. Lightweight (dropping 20 lbs)
2. 80mm diameter (3.15")
3. Greddy quality and fitment

---- HINT: Also the piping wall thickness is less with titanium. (i.e. the most important factor in tubing, the I.D., is quite a bit larger than the standard 3" SS exhaust) There is a restriction at the begining of the exhaust system where is mates to the cat, this has to be there to reduce down to the cats bolt hole flange dimension, however the I.D. at this restriction is bigger than the I.D. on the 3" ss exhaust systems.

Titanium will heat up faster than its stainless steel counterpart because the wall thickness and thermal mass is lower. It will also cool faster also due to this same reason. Both of those mean virtually nothing as far as performance goes.

The only slightly downside to this exhaust is its somewhat "not straight" design. It is a nice looking and nice sounding exhaust. The invidia in the picture above is also nice looking, there are alot of nice looking exhausts. There are alot of higher priced exhaust (ARC for example) that are not made of any exotic material and are still higher priced than the Greddy Ti. Those people who buy those are paying for a name and nothing else, IMO. That is there perogative.

I chose the Greddy Titanium exhaust for the 3 reasons I listed above. First and foremost being the weight savings. Contrary to your belief, the Titanium exhaust does not add a resounance tone any more than any other "non-resonator" equipped exhaust system.

Also in my opinion, if you have the stock downpipe and stock cat, I have never heard an exhaust system sound better on an Evo. I have a 3" downpipe and 3" high flow cat now, but before I had them, the exhaust was perfect sounding in my opinion. Not too loud, not too quiet, perfect tone and NO resonation at highway speeds. This was without the silencer in.

I have built my car on a budget and consider myself very thrifty in my purchases. However I considered the Greddy Titanium a worthwhile expenditure. And evidently alot of others thought it was a good purchase and are happy with it.


Brian

 

all the bends are what is ghetto about that the jic has way less bends.

 

Very Nice Post. Only arguement i have is the fact that more than 3" may possibly hurt your performance. Hell, why don't we put 4" pipes on there? there is a reason pipes are 3". It does nothing for perfomance by having that exhaust....thats why the HI HP cars don't run it. Ask Al what he runs on the dynoflash car, or any of the other guys running 10s. "that ghetto custom work" will probably be the answer, and it won't be Ti, i know al runs the buschur though...

But again, very good, informative post.

-Jeff

 

a lot less bends huh? there has to be close to the same amount, or much sharper bends in order for it to fit.

 

a dyno chart for both exhaust will end the agruements.

 

Nuff Said...This pic was posted by someone else in the forum.

It looks alot better, saves 20+ pounds, probally performs a little better, and its JDM Greddy Titanium. Bling bling

 

HAHA, yeah, BLING BLING.....again, IT DOES NOT PERFORM ANY BETTER. jesus, do you know anything about anything?

and a dyno wont tell much unless the same person dynoed the same car on the same day at the same dyno with both on the car. thats very unlikely.

 

Thank you.

The reason why pipes are 3", is because that is a readily available size. The prices are less and can be sold for less. In Japan, they have metric tubing which is most commonly sold in increments of 10mm. i.e. 50mm, 60mm, 70mm, and 80 mm. These sizes, like in America are sized by O.D.

The reason why people don't put 4" pipes on there is because of ground clearance and the amount of airflow that is required does not necesitate a 4" pipe. However if you could fit a 4" exhaust system on the Evo it would make at least the same amount of power as a 3", if not more. Al, considering he is making 667 awhp could definitely benefit by running a larger diameter exhaust. The reason he doesnt is because the people who sponsor him don't offer an exhaust larger than 3" and he may not be aware that he could benefit from it, plus the ground clearance issue. Also the 4" piping in america is rare and very expensive.

However my supra has a HKS Racing Titanium exhaustt which is 104mm diameter piping. The piping is stainless steel and the muffler is titanium. I had to get it for the Supra for another reason besides weight, but that is a long story. To put it short, it is due to an additonal bracket support that no other exhasut has. It is the largest diameter exhaust available. In dyno testing it made more horsepower than any of the other exhaust and the closest in size to it was a 95 mm exhaust with the same design, but smaller piping. Testing has shown that up to a certain horsepower the 104mm exhaust makes the same horsepower as the smaller diameter exhausts, but once the air flow and horsepower requirement are increased so far, the larger exhaust helps out. The reason this occurs is due to the increased velocity in the exhaust, once the velocity gets so high the smaller pipes restriction start to become a restriction to flow. In the larger pipes the same air flow can be passed at a much lower velocity. Restriction to flow in pipes is a function of velocity.

FYI, there are people in the Supra community that are making custom 5" exhausts. Check the Supraforums for threads about the benefits. They are claiming massive horsepower and torque increases.

In a turbocharged car, you almost NEVER lose power by going to an overly large exhaust.

Brian

 

Check my cars, i am also very familiar with the HP turbo cars. i did extensive work and studying on my buddie's 800whp supra as well. BUT, i do know that a 3" exhaust pipe on a 400whp 300zx makes less power than the 2.5" pipes(keep in mind, this is true DUAL exhaust, so only 1.5L and 1 turbo per pipe. The reason is the fact that the bigger the piping, the cooler the exhaust thus being harder to move and reducing flow.

We know that turbo cars do not need backpressure, but you still can't slap a 6" exhaust on there and expect it to perform the same(or better). Once you get to a diameter that can flow the same as your head, and your downpipe and all that, then you want to stay as close to that as possile. now, we are really discussing a matter of 3mm here, so i doubt it makes much of a difference, if any at all. But, just in theory, its not always better to be BIGGER.

So, thats the reason your last statement is slightly incorrect....you will def lose power in a 4" application over a 3" application with less than 300whp......

-Jeff

 

Does anybody have a pix with it on their car?

 

here ya go.....