Table of Contents
Does the WRX have a top mount intercooler?
It comes down to this: The 2015-2019 Subaru WRX and has a factory top mount intercooler that is overworked, under-designed, and generally inefficient.
Do you need a tune for a bigger intercooler STI?
Yes. it will need a different tune. in general, for 08+ sti’s, if you look at the car differently, it needs a different tune.
Do you need a tune for a bigger top mount intercooler?
No, you don’t need a tune. But you’re not taking advantage of the new part either. With increased cooling you can run more aggressive timing.
Is the stock STi exhaust good enough for a turbo?
So if the STI exhaust is exactly the same as the WRX exhaust, except for the fact that the axle-back portion is 2.5″ rather than 2.25″ (WRX), then the stock STI exhaust with cats should be good enough for both the larger engine and turbo. So just how “restricting” is the stock STI exhaust to retain stock performance of BOTH 2.0L and 2.5L engines?
What is the difference between a WRX and an STI?
In fact, to the untrained eye, the giant wing on the back of the STI might be the only exterior difference. There are some other tips and clues that help you determine if it is a WRX or an STI, even if the STI does have the wing. The STI will have STI badges on the grill and in the back. It will also have bigger wheels and bigger breaks.
Is a top mount intercooler right for You?
A top mount intercooler may not be for everyone, but it might be just what you need. Check out these four reasons why it might work for you and if they resonate with you, then maybe this will help make the decision a bit easier. The OEM intercooler on the STI is better than the one on the WRX, however, it still has plenty of room for improvement.
Does the STI exhaust have a cat in the uppipe?
02-05 WRX has a cat in the uppipe. 06+ WRX and all STi have catless uppipes. The axle back muffler section on the STi is 2.5″ like the rest of the exhaust, where the WRX axle back muffler reduces to 2.25″. There really is no performance gain in the STi exhaust. Click to expand…