Heard from somewhere in the forum and also a WRX STi Driver informed me about the mod of upgrading the exhaust with an aftermarket and you lose HP....T/F?

If so, do I really need to upgrade the ECU?

If not, then what is the best one; Fujitsubo?

Thanks

 

If they installed a horrible aftermarket exhaust, it's possible to lose horsepower. The ECU should be able to learn enough to not need to be modified for an aftermarket exhaust.

HP gains are not the only thing to consider when choosing an exhaust. Keep in mind the G is a heavy vehicle and that the exhaust is a pretty heavy part. Going with a good titanium exhaust like the Amuse or Top Secret will gain you the same horsepower as most other steel exhausts, however, the difference in weight on the titanium exhausts is as much benefit as the HP gain, if not more. The price difference is very significant between steel and titanium exhausts but if you're serious about tuning your vehicle, Titanium is the way to go.

 

The torque band will change so typically when you use aftermarket exhaust,
you will loose backpressure for your lower-rpm but gain the high's.

Titanium is good stuff. expensive but very light weight.

You need to change at least 200-300lbs to notice a difference on
your butt dyno though.

 

I was condiering the amuse exhaust but had a question. How does titanium hold up in the winter? I do drive my car on snows in the winter time and I do get to the car wash once a week to get all the salt off, is the metal to soft and will be effected by the salt?

 

Titanium is rustproof. For example, titanium bicycles don't even need painted, unlike steel ones.

 

Feel free to correct me, but if I'm not mistaken, titanium is the lightest but yet the strongest...
That's why it's the most expansive too.

 

ok just wasnt 100% if it wouldnt discolor or anything, thanks for the info

 

The best alternate thing you can do in the salty winter time below freezing temps
is to leave your car outdoors after a drive if it's your commuter. The melting
and freezing cycle caused by garaging the car will actually do more harm than
good. it's best to leave the car dry and frozen as much as possible. When the
temps reach around 34F, you'll want to try to wash it as much as possible though.

btw, titanium is like stainless steel. doesn't get affected by salt too much.

 

Ya I knew that... here is my garage... I have the best of both worlds