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Discussion Starter · #1 ·
Just got my '16 STI on Friday. What are the best mods that won't void my warranty. Dealer said exhaust and intake but from what ive read intake needs an ap tune. Tune is a voided warranty. So im guessing there's not much that a dealer will allow. But any advice would be appreciated, thanks guys!
 

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You don't just void the entire warranty with any particular mod. You may have claims denied because of them. Intake would likely cause any engine warranty work to be denied, Stainless brake lines would likely cause any brake coverage to be denied, and on and on.

Basically if you are worried about warranty coverage I would perhaps stick to an axle back exhaust or leave it alone.

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Discussion Starter · #5 ·
Thanks guys, thats what i was thinking. Is the hp/torque jump really noticeable with an intake, exhaust, & ap?
 

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Discussion Starter · #8 ·
Is a stage 2 protune from the cobb ap? Or is it more like a efi live type tune? What all goes into a stage 2 upgrade? Sorry but im new to the subie game. Lol
 

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Leave it alone

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Xab6980 said:
Wow, i was asking because I would like to understand and from that answer I guess im not worthy of a real response.
Any modification to the car can affect warranty (not necessarily VOID it, but it can cause a claim to be denied). If you're really worried about warranty coverage, the best advice you can adhere to is exactly what zax said, and leave the vehicle the way it came off the showroom floor.

While there are consumer protections such as MMA, you bought a Subaru so it's unlikely you can really afford to fight a legal battle if it came down to it. Subaru can deny your claim, and you can be without a car.
 

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It's one of those topics that truly is "if you have to ask".

There can be great expense in maintaining these cars, the failure points are well documented, and extremely expensive to repair. If warranty is important zax has the appropriate response. The ej engines have a storied history with piston failure. In that scenario there is an off chance you can repair the block and get new pistons. That's a slim shot and most failures result in an extremely expensive and time consuming short block replacement.

If you are wanting to modify anything have the money to replace the system you are modifying. Wanting to modify and keep warranty coverage is counter intuitive.

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I just had a chance to review the initial question...

Xab6980 said:
Just got my '16 STI on Friday. What are the best mods that won't void my warranty. Dealer said exhaust and intake but from what ive read intake needs an ap tune. Tune is a voided warranty. So im guessing there's not much that a dealer will allow. But any advice would be appreciated, thanks guys!
Who gave you this information? The sales person when you bought the vehicle?

You have to take what you're told by the dealership with a grain of salt...

Big warranty claims (e.g., engine / transmission issues) can result in a review process that are outside the Service Managers hands. So, even if you have a "mod-friendly" dealership at your disposal, they could be put into a situation where they can't back up their claim of warranty work. It's one thing to take a "loss" on service paid for by SoA (warranty work generally pays less than standard shop rate), but if SoA isn't willing to pay for the work, do you honestly think the dealership is going to do it for free?
 

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Discussion Starter · #15 ·
Just gonna leave it alone for now and stockpile parts then after warranty is up start the mods.

How weak are the rods? when failure occurs is it from like modding it to like 400 horsepower or what? Just food for thought here, thanks
 

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Your pistons on the STI will blow up long before the rods go.

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Wow, i was asking because I would like to understand and from that answer I guess im not worthy of a real response.
Then I suppose I'm not worthy either because it's exactly what I did.

You do you, but I won't defend your ass if you come back in here whining that Subarus are junk when something goes south.
 

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To the OP's question, if one does a mod that goes south, Subaru can decide to deny warranty claims for "directly affected" (my words) parts on your car. And as posted above, we are small fish compared to a large corporate entity, so if a dealer decides not to honor your warranty claim, you have the right to appeal that decision a level or two above, but if Subaru corporate decides in the end to still deny your specific claim, who among us can afford to get a lawyer fight their decision in court. Guessing that less than 1% of us clubWRX members could afford to do that.

So if you do a mod, and I have done 30+ mods on my 2017 WRX, we have to accept that if a related part goes south, we are the ones who will pay to get it fixed. As an example, I installed a Perrin steering dampener on my '17 WRX, and if my steering rack or any other part of my steering system goes south, I would not fight a warranty denial, i.e., I made a mod choice/install, and I accept the consequence of that mod. For each and everyone of my mods (and BTW, here is my "build thread,": http://www.clubwrx.net/forums/builds/134543433-wrx-johns-2017-build.html), I accept responsibility. Does not mean that if my motor goes south (I have not even touched it), and my dealership blames my Corsa exhaust that I would not fight it, but IMO, doubt that that would happen.. However, will I change on tiny part of my intake, do even a stage 1 tune on it before my warranty is over, "no."

I admire others who are willing to take on more risk than me. We each get to choose our own level of risk, and as long as we all know that for every non-visual mod we do, that there is risk we are willing to take, we can all proceed on that basis.

As to the very detailed part/question in your thread, changing even a part of an intake system has resulted in significant later motor problems for some, especially for those who then choose not to have their car tuned by a pro. And yes, even some intake system changes which have then had a tune by someone who is a experienced tuner and who operate a for-profit business as a tuner, has resulted in occasional problems.

Again, we each get to choose the level of risk we are comfortable with. And BTW, I have modded several other cars over the past few years, and it is not just Subaru who can/does deny subsequent warranty claims -- resulting in an unhappy owners. On the other hand, all cars these days are precisely engineered systems, and can you deny, for example one circumstance I know of, Ford Motor Co for denying a claim for a blown motor when the owner supercharged his factory un-blown motor to around 18 PSI?
 
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