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Discussion Starter · #1 ·
Going back like 8 years now.. I remember putting a air intake and new exhaust on my Mustang GT and doing a performance tune. The result was a marginal HP upgrade. Back then the GT only was around 300 stock and my upgrades put it into the 320 (with tune). I was happy with the car.. traded it in 5 years later for my Volvo.

These are different times, Mustangs are beasts now with the GT 8 cylinder model doing over 400HP stock.

The Subaru WRX is a much different car, I know that. Its not as forgiving with modifications and you need to know your stuff.. I get that.

My noob question: Would a Cobb tuner + tune + Air Intake replacement yield any noticeable results on my '16 limited WRX or any results at all safely? I am not interested in destroying the engine but if one bolt on and a tune can yield some more power.. great...I can plan that 10k miles down the road in the late spring.

Just wondering.
 

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Just do a Cobb AP and go from there. The Stage 1 93 (if applicable) is phenomenal. If you want more get a JPipe, you don't need a catback. Honestly the intake doesn't gain too much and the stock intake suffices on these cars


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Discussion Starter · #4 ·
So just the COBB tune/map?
 

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Yeah, I mean you'll need access port or something similar to tune or add performance upgrades such as a Cobb SF intake or a turbo back exhaust. These can warrant more power for you. The stage 1 tune yields about 8.5% more torque and HP over stock and fixes/improves several other issues with the Subaru OEM tune.


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Discussion Starter · #6 ·
So a tune.. no bolt ons.. and you can see around 290 HP.. essentially an STI that can experience more power then a real STI at lower rpms. So besides the styling and badging.. Why spend more money and go from a WRX Limited, for example, to and STI when making a decision between the two... am I missing something? With bolt ons plus tune it would be faster then a STI...
 

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You're focusing on output. That's not a meaningful criterion IMO. The giveaway is selecting the word "essentially." I do not believe such a thing exists. You'll have a WRX with more output, that's all. The point is the chassis and drivetrain; output isn't interesting. I suspect the chassis is worth over 1 second per km.
 

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Discussion Starter · #8 ·
I would not argue that the STI handles better. I test drove one several times, and not one that was at a dealership but one broken in by a daily driver/owner.

I suppose my confusion, being new to this platform, is that it would seem buying the highest trim level (STI) does not provide significant improvement over the base (non-STI) model. A matter of opinion obviously. Hopefully this changes during the next major generation change to the model.
 

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I would not argue that the STI handles better. I test drove one several times, and not one that was at a dealership but one broken in by a daily driver/owner.

I suppose my confusion, being new to this platform, is that it would seem buying the highest trim level (STI) does not provide significant improvement over the base (non-STI) model. A matter of opinion obviously. Hopefully this changes during the next major generation change to the model.
It's really quite simple: it means you do not understand the differences.

Do you understand what a limited slip differential does? How about a much better gearbox design with shorter gearing? All I've heard is discussion on output horsepower. That's not the reason you buy an STi.

I get it. You don't see the value. The car was never meant for you.

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Discussion Starter · #10 ·
I understand what a LSD does (bluntly put: helps make sure you get power to the wheels in rough conditions) and I understand that the STI has an actual LSD while the base WRX has viscous speed-sensitive coupling differential. The STI is a rally car. I also know about gearing.

My far past = Mustang enthusiast. Owned a Cobra.. and a GT that was modded. These cars were very fast in a straight line. Fun to drive in good weather.

So since I'm not a rally racer or even thinking of track my views are clearly going to reflect this.
 

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I understand what a LSD does (bluntly put: helps make sure you get power to the wheels in rough conditions) and I understand that the STI has an actual LSD while the base WRX has viscous speed-sensitive coupling differential. The STI is a rally car. I also know about gearing.

My far past = Mustang enthusiast. Owned a Cobra.. and a GT that was modded. These cars were very fast in a straight line. Fun to drive in good weather.

So since I'm not a rally racer or even thinking of track my views are clearly going to reflect this.
The LSD is far more of a useful tool than just putting power to the wheels in rough conditions.

The STI comes with a stock 41f:59r torque distribution under no wheelslip. Any time wheel slip is detected (loss of traction occurs at the limit of cornering on any surface) the STI does a much better job at shuffling power to the correct wheel with the most grip. This means more grip and cleaner, more repeatable lines.

While this might not be worth it to you, you can't argue that the STI doesn't corner better -- it's written into all the performance benchmarks for each car.

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Discussion Starter · #15 ·
Well I did read on one of the fourms that the stock sti was raced professionally and performed pretty well in rally car events. I suppose in my definition that's a "rally car"

/shrug

Perhaps I should not believe everything I read
 

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Discussion Starter · #16 ·
Yes, I agree 100 percent that the sti corners and handles far better then the base wrx! I experienced as much although it was at legal speeds on a mountain road and with the 2015 sti.

As far as what that is worth I can concede that it could be worth a lot to the right person.

It would appear that price delta to be around 8k between wrk and sti.
 

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It would appear that price delta to be around 8k between wrk and sti.
Not exactly. You can't really compare the base WRX to the base STI as the STI has features that are much closer to the WRX limited plus other options that are not available at all on the WRX -- e.g. dual climate control.
 

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Well I did read on one of the fourms that the stock sti was raced professionally and performed pretty well in rally car events. I suppose in my definition that's a "rally car"

/shrug

Perhaps I should not believe everything I read
Well, I will say this... there are people who race the WRX/STi in open class rally events. I suppose this makes the STI a "rally car."

There are also people who race Geo Metros in open class rally, so I suppose this makes the Geo Metro a rally car.

The pain here is that many senior members remember people coming onto the forums claiming their STI was the same thing as what was raced in WRC. A Rally Car in that sense the STI is clearly not.
 

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Well, I will say this... there are people who race the WRX/STi in open class rally events. I suppose this makes the STI a "rally car."

There are also people who race Geo Metros in open class rally, so I suppose this makes the Geo Metro a rally car.

The pain here is that many senior members remember people coming onto the forums claiming their STI was the same thing as what was raced in WRC. A Rally Car in that sense the STI is clearly not.

The most common cars used at the local rally school/dirt circuit are mid to late 90s base model Imprezas.


WRC rally cars cost $500k+ and have almost nothing in common with their production model namesake.
 

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Wasn't the 22b the closest to a rally car? It was only for homologation purposes?

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