Injectors, fuel pump, (stock location) turbo, and equal length headers (ELH). Pretty much it lol. Maybe suspension? As for which to get, it really depends on your budget

For reference, I’m 100% street, making about 400 hp, and my injectors are only at about 60% (meaning there’s room for more power). Probably wouldn’t win many drag races, but it’s a blast on the street. I have a BCP x500+ turbo, ID1050X injectors, an AEM 340 lph fuel pump, and ELH

 

I’ve heard that using ELH takes away the Subaru rumble. Is that true? If so how noticeable is it?

 

What’s your HP goal? Anything between 400-500 wheel is a blast on the street. Anything more is still fun, but you start to lose street ability due to a slower spooling turbo.

 

500ish would be ideal I think. I’ve never had mine dyno’d, so I’m not sure what my whp is.

 

I'd suggest suspension mods. Less of power mods. Put all of your current power to the ground. It will make your car more efficient and will still feel faster.

 

Any specific suspension mods you’d suggest?

 

Karlot is correct in asking for budget - but I recommend 1300x injectors, single fuel pump (get the hellcat), EL headers and E85. For 400 WHP go FP blue, for 500 get a Green or Black with FMIC. I have the FP Black and though there is some lag, it is extremely fun for the street. Oh yeah, pick up some 18" race wheels as well to reduce your car's rotational mass. The stock 19" wheels are ridiculous IMO

EDIT: Build your motor - pistons, rods, ARP head studs

 

I think injectors/pump is what I’m going to do next. Debating between 1050x and 1300. Should I just go ahead and get the 1300s just so I don’t limit my power in the future?

 

If OP were to go 400 or 500 whp, he would need some engine work at minimum. Hitting 350-370whp is the sweet spot, money-wise. You can get all the juice but not build your engine. Anything more than 400whp, then it is a HUUUGE risk and a HUGEEEE price spike since you will need many supporting engine work that cost $$$.

 

killerb with cobb ti exhaust - few revs

- tomei with revel exhaust

It's not a Honda, but it doesn't have the inefficient sound that so many crave.

 

killerb with cobb ti exhaust - few revs

- tomei with revel exhaust

It's not a Honda, but it doesn't have the inefficient sound that so many crave.

I still think that it still has a distinct Subie sound with the Cobb exhaust.

 

If you have access to, or you plan on doing E85 in the future, 1300s.

If not, 1050 is plenty.

 

ELH, turbo inlet and fuel system upgrades like pump and injectors. This would be an excellent time to go flex fuel if its easily available to you.

 

From smaller town in Illinois and e85 is slowly becoming more available. With the turbo inlet, will it require any adjustments to my tune?

 

It depends on how baller you are. Torque Solutions just released a carbon fiber version that I’m really eyeing.

However, Cobb or Perrin you can’t go wrong with.

 

I’ve seen posts about it being designed but haven’t seen anywhere selling it. Have you? Definitely intrigued!

 

It’s love on their page, that much I know. And at $450 it’s not bad, but I want to learn more about it.

Torque Solution HD Turbo Inlet Pipe: Subaru WRX 02-07, STI 04-21 - Carbon Fiber

Torque Solution HD Turbo Inlet Pipe: Subaru WRX 02-07, STI 04-21 - Carbon Fiber

www.torquesolution.com

 

I sure do like that!

 

I’m really debating on getting that and ripping out the Cobb inlet.

 

Any specific inlet you suggest? I’ve been looking at the Cobb V2.

Perrin or Cobb will do just fine. The Perrin can be installed without removing the intake manifold. Just some patience, lube, and the right tools. The Cobb should be same.

It’s love on their page, that much I know. And at $450 it’s not bad, but I want to learn more about it.

Torque Solution HD Turbo Inlet Pipe: Subaru WRX 02-07, STI 04-21 - Carbon Fiber

Torque Solution HD Turbo Inlet Pipe: Subaru WRX 02-07, STI 04-21 - Carbon Fiber

www.torquesolution.com

Wow that looks sweet! I like how the fittings are threaded! I wonder how the inside of the inlet is. Sometimes the carbon fiber stuff looks real nice and pretty on the outside, but the insides can be pretty rough. My gripe with these hard inlets is that it still uses silicon couplers. They always require trimming which is really annoying in my opinion. Like for the price of these things, would it really just kill them to make them the appropiate size?! Especially when they offer a stock turbo inlet size!


Someone better alert @Black90tsiawd about this carbon fiber ism

 

Perrin or Cobb will do just fine. The Perrin can be installed without removing the intake manifold. Just some patience, lube, and the right tools. The Cobb should be same.




Wow that looks sweet! I like how the fittings are threaded! I wonder how the inside of the inlet is. Sometimes the carbon fiber stuff looks real nice and pretty on the outside, but the insides can be pretty rough. My gripe with these hard inlets is that it still uses silicon couplers. They always require trimming which is really annoying in my opinion. Like for the price of these things, would it really just kill them to make them the appropiate size?! Especially when they offer a stock turbo inlet size!


Someone better alert @Black90tsiawd about this carbon fiber ism

Wouldn't work for me. Id need to do a custom one for the rotated kit. If you happen to know anyone that does one off custom carbon fiber car parts if love to ask them if the cost is only going to make me shed a single tear or have me weeping like school girl in the corner.

I do like the Yperion one better. That guy does actually do all the work in house and it has burnt titanium ports on it. From what I've read TS is a Chinese company that more or less copies other manufacturers work. Nothing to back that statement up other than Internet/industry rumors. But a lot of their stuff sure does look exactly like some other vendors stuff. Just look at their new "cosworth" intake manifold.

 

@Jay11STI if you look at the TS page, they show some pretty decent pictures of the inside of the inlet.
I’d like to see one in person, mainly to see how well the Carbon matches all of my Redline stuff. If it’s pretty dang close, I might eventually opt for one of these. Not mad at my Perrin at all though. I need to leave well enough alone lol…

 

We’re car guys, do we EVER leave well enough alone?

 

lol, great point! Remind my wife of that when we all meet up please!