Hey everyone, getting a muffler delete on my 2015 IS 250, at 19K miles right now.. I am worried that an issue won't arise with the car and Lexus will void the warranty for it. Can anyone give me some words of advice? Open to anything.

 

best advice? don't do it.

 

If you keep your mufflers after they chop it off, they can reweld them back on there if you decide to go back. Can't speak for voiding warranties as I'm already outside of warranty. I think the cost of a muffler delete and getting some nice tips to pair is just slightly cheaper than buying a new axleback setup that's on sale. If you're paranoid about warranty have you considered getting an aftermarket exhaust setup when it's on sale?

 

GOD SPEED lol, don't forget to upload a sound clip

 

I didn't end up going through with it yet, I posted this in the performance page but no one answered but I wanted to know about this:

I saw one post specifically about someone who lost a noticeable amount of low end torque after his/her muffler delete because there was a decrease in 'back pressure'. The IS 250 already has low torque so I don't want to install it and have to deal with this. The mechanic said that it strictly effects sound only. My friend also said that there are so many restrictions in the exhaust already (primary cats > secondary cats > resonators> mufflers) so there would instead have a no effect to a slight increase in performance. Can someone shed some light on this please?

 

 

 

 

 

So, this.

If you mess with the exhaust and the car is under warranty, it's probable that your claim will be denied. I have RSR Down springs and 19" wheels and I think they would deny a warranty item if it happened to be related to suspension. I don't think they could deny much else, but some dealers adhere pretty strictly to the car needing to be just as it rolled off the lot for there to be any legitimate warranty issue.

I don't think a V6 is a great engine as far as sound goes. Most V8s are pretty good, but even the NSX V6 sounds kind of crappy with modified exhaust. I've owned both the 2.5 V6 and the 3.5 V6 and would not modify the exhaust on either. I think both sound fine from the factory and they don't have the drone of the Nissan/Infiniti V6. I certainly wouldn't want it any louder, but I am 47. I still think the modification you're suggesting will cause warranty problems and I don't see the point of it.

 

Your mechanic is right, muffler delete only effects noise no torque effects nor Horsepower, even aftermarket muffler alone won't effect anything but noise, that guy said the lost torque, as you know some people living in delusion too much, from Header to Resonator i would say maybe, but Muffler No ! muffler's job is to reduce drone and loud noise. But if you decide to delete your muffler, get an aftermarket midpipe too , the sound will be same as V10 lol LC500 or V8 Mustang GT

 

Thanks for the advice guys!

 

post some video

 

Just keep it stock. I don't get why people want to draw attention to a slow car. A premium slow car at that!

 

because racecar