New Cat back exhaust, what should I do next?

[MisterNBG]

So I got a Cat Back exhaust for my '04 WRX It sounds... Just amazing! I still don't know what it is about the Boxer engine that can get such a rumble to it.

Anyways here's the pics

Before


Comparison


After


Final Product


So, what should I add next? I want the Up and Down Pipes of course lol and I really want to Tune this bad boy, Any thoughts?

[Terminal Kuz]

is that a catback or axleback? Looks good though

[wrx650]

Both of those for sure. The up on yours has catalytic convertors that are known to get sucked into the turbo so its probably best to replace that asap (Attn '02-'05 WRX Owners: The Importance of the Uppipe Mod). The downpipe will make it sound really mean and stage 2 will be way faster!

[MisterNBG]

is that a catback or axleback? Looks good though

It's a cat back, I only showed the first part of it though lol, you know what I mean

[MisterNBG]

Both of those for sure. The up on yours has catalytic convertors that are known to get sucked into the turbo so its probably best to replace that asap (Attn '02-'05 WRX Owners: The Importance of the Uppipe Mod). The downpipe will make it sound really mean and stage 2 will be way faster!

Thanks for the advice

My main goal is to be able to run this WRX along side STi's (stock of course)

I saw this magazine where this dudes through a STi turbo and fuel injectors into their '02 Auto WRX lol, thing had 300whp though :?

[wrx650]

One of my friends did an sti turbo swap, bigger injectors, and a bigger fuel pump and ran e85 with a pro tune. Not exactly sure what his numbers were, but I'm sure they were pretty decent for the amount of money/work he put into it.

[DemonWRX]

So I got a Cat Back exhaust for my '04 WRX It sounds... Just amazing! I still don't know what it is about the Boxer engine that can get such a rumble to it.
So, what should I add next? I want the Up and Down Pipes of course lol and I really want to Tune this bad boy, Any thoughts?

it is the unequal length headers that makes the rumble. Basically the driver's side exhaust beats have a longer way to travel then the passenger's side, creating a 'thump pause thump' pattern

[Callahan]

I would lose the mud flaps.

[DemonWRX]

I would keep the mud flaps.

Living in PA there is snow....and that means PennDOT crews throwing lots of salt, cinders, ash, sand, and gravel in the winter....and lots of municipalities up here use the dreaded 'oil and chip' method of resurfacing throughout the summer.

[MisterNBG]

I would keep the mud flaps.

Living in PA there is snow....and that means PennDOT crews throwing lots of salt, cinders, ash, sand, and gravel in the winter....and lots of municipalities up here use the dreaded 'oil and chip' method of resurfacing throughout the summer.

Yeah we just go like an inch of icy snow and I tested Subaru's name on these back roads at around 4am hahaha So much fun! Turns out the car is capable of more than the 'average' driver is. But I'll get better at it Totally keeping the mudflaps though, it is a rally inspired car after all. It's meant to get dirty once and awhile

[MisterNBG]

I would lose the mud flaps.

Lol. To each their own I suppose :? I'll stick with the flaps though, although I could use a new pair for the back at least, the right one is crooked (missing bolt) and the other is scraped up. Maybe some Rally Armor mudflaps would look nice

[wrx650]

Yeah we just go like an inch of icy snow and I tested Subaru's name on these back roads at around 4am hahaha So much fun! Turns out the car is capable of more than the 'average' driver is. But I'll get better at it Totally keeping the mudflaps though, it is a rally inspired car after all. It's meant to get dirty once and awhile

What kind of tires do you have right now?


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[MisterNBG]

What kind of tires do you have right now?


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I have 'used to be' nice street treads. But they're very worn out so they are borderline slicks right now lol

[wrx650]

I have 'used to be' nice street treads. But they're very worn out so they are borderline slicks right now lol

Where do you live? If it snows you probably should get some winter/snow tires. Pretty dangerous and scary without them ha.


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[MisterNBG]

Where do you live? If it snows you probably should get some winter/snow tires. Pretty dangerous and scary without them ha.


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Northern PA, I am saving for some better treads.