IMO, the lower and mid power is more 'usable' too.

I don't race my car though, so that's must me.

 

Yes it's definitely more streetable. I think the thing most people don't understand is the way works approach power, they look for the wider powerband instead of peak #'s that for some reason most people are satisfied with....I mean who cares if you peak 300 pounds of torque and then it drops to 250 in the next 400-500 rpms and keeps falling drastically....that's retardedly useless.

 

And if you argue that no one uses the last 500 - 1000 rpms, then you might as well just lower your rev limiter to 6000rpm since your never going to use it anyhow, right? It's just a simple reflash away.

 

I think people use it, people just don't do a wot run everytime they take off heh.

 

My g/f's VW GTI does. Seems to be optimized at 2.75"

 

The only exhaust that I know of that is 2.75 in is the Gramlights exhaust and the Works.

 

Well the EVO VIII, with the stock turbo, makes more power at 2.75" than 3".

This has been both dyno and road tested. Because of outlet from the O2 housing, 2.75” is the best for max flow. If you take off your down pipe and take a look, you'll understand why! The outlet from the O2 housing is very small... if you go from that to a 3", you get nothing but exhaust turbulence and rapid thermal expansion. This means colder and slower exhaust velocities, which is bad and creates MORE backpressure. We are working on a gradual transition to 3" system, which will fix this problem.

At this point, the 2.75" exhausts are the best available for this reason. They will make more power everywhere in the power band. Even up top.

 

I was on the WORKS website just now. It's showing the cams to add 25hp. I could have sweared they used to say 25WHP.

I know the philosophy about the usuable power and all that, but has this page been changed??

 

Yeah you're right. It should say 25whp. Hmm..

 

Your right, it looks like a correction needs to be made. I'll make sure that it gets taking care of, thanks for pointing that out.


By the way WORKS does quote horsepower at the flywheel as a manufacturer, just like Mitsubishi.

 

Cool. I'm still wanting to get the 269 cams. And besides the driveability changes, I want more than 25hp at the crank - 25whp sounds pretty sweet to me! Especially since I know you guys always under-estimate your numbers.

Just thinking outloud here - I'm thinking 25whp to the wheels would be something like 40hp at the crank!

 

very nice cams for the stock turbo. =)

 

Have you ever seen the turbo VW uses?.... the inlet is no bigger than a quarter



on the left is the VW turbo, TINY thats why you dont need a big exhaust on that car. Our cars on the otherhand make over double the power with a similarly sized motor, hence needing the bigger exhaust. Dont get me wrong 2.75" exhaust is better than stock but you will see better gains from a 3" system.

 

I've read numerous threads from different people on the board, including various tuners. If you have no level mods, with 3" exhaust, you will probably end up with a higher peak #, but less low torque than a 2.5" exhaust.

 

ONLY if the O2 sensor housing has a 3" outlet (something we are working on)

otherwise the 2.75 Downpipe simply makes more power.