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  1. Q50 General Discussion Forum
    How’s it going forum, I recently bought a Fast Intentions (FI) Catted Downpipe (DP) that I plan to install on my stock exhaust. I do have a few questions and any bits or pieces of information would be greatly appreciated. 1. What hp gain can I expect from DP on stock exhaust? 2. How much louder...
  2. Q50 Parts
    Looking for full catless downpipes
    $600 USD
  3. What Did you Do to Your Q50 today
    A bit late posting but thought I would share some of the challenges I had installing my FI CB. I should note - what I'm sharing has nothing to do with the folks at FI or their product, all of this is completely on the installer - ME! 2018 RS AWD - installing the Touring FI CB ( resonated Y /...
  4. 3.0t
    So I wanna run the helmholtz exhaust and I also wanna replace my mid pipe. Any suggestions on which mid pipe to get. I also plan on getting ams downpipes
  5. Q50 Parts
    Hello, Im selling my factory catalytic converters from my 2018 Infiniti Q50 Luxe that had 20,000 miles on it when I took them off. I’m looking for $200 (reduced from $400) plus shipping from South Florida. DM me with any questions. Thanks, Cory
    $200 USD
  6. For Sale Borla sport CBE

    Q50 Parts
    Im selling my borla sport catback. It is just not my cup of tea. It has no drone or rasp after i added resonators but still to loud for my taste. I will cover shipping with a resonable offer. They are vibrant 12" resonators. I have the harmonizers also if you want to put them back in, but they...
    $1,300 USD
  7. Q50 General Discussion Forum
    Anyone have trouble getting the bolts that come from the catalytic converter to the exhaust off? Everything else is off and ready to go on. The nuts are off I just can’t get the bolts with the round head to come out?
  8. Q50 Parts
    Exhaust has been on vehicle for 2 days. Need to go back to stock. Receipt from Auscarmods for proof of purchase provided. I waited 3months for item to arrive.
    $2,600 AUD
  9. Q50 Parts
    Not sure the proper place for this but I have a stillen catback exhaust and i’m not happy with the sound of it. Planning to mod the exhaust to make it louder but figured id see if anyone was interested in a trade. I’m located in NY. Open to any trade besides for a stock exhaust and i will...
  10. Q50 Parts
    Up for sale, used Helmholtz Axle-Back Exhaust, Infiniti Part # B0100-Q50S2 These things now go for 830.00 from Infiniti. These are about three years old but only have about 5k miles. I don't drive the car very much in the winter, so they're not in contact with much road salt (see images)...
    $450 USD
  11. 3.7
    I went to the dealership to have someone take a look at both cats that I recently noticed have quarter sized holes. When I arrived, I showed the manager that was helping me the pictures of the cats. It was not until after waiting an hour and a half did he inform me that the 80k mile warranty...
  12. Q50 Parts
    Q50 3.0T Greddy EVOlution catback exhaust for sale. Asking $900 (sells for $1,250 new), prefer local pick up only, as shipping costs are insane. But will discuss if you pay shipping. Used, has been on the car for about a year and some, but is in excellent condition. Nothing is wrong with...
    $900 USD
  13. Q50 Parts
    Searching for a aftermarket q50 exhaust. It’s for my new 2022 q50 and the sound from the OEM exhaust is too quiet. Located around Chicago suburbs. Shipping and pickup allowed pickup preferred if nearby.
    $10 USD
  14. Q50 Parts
    Looking for an Ark Grip catback exhaust for 2018 q50 3.0t, preferably burnt tips but open to others. Located in Florida, I could meet for pick up and I’m open to shipping if the price is right.
  15. Q50 Parts
    Looking for resonated lower downpipe for 2018 Q50. Preferably HKS but if other brand, feel free to shoot. I live in Florida for pickup but I’m also open to go shipped if necessary.
  16. Engine and Technical Discussion
    Hi after changing my lower o2 sensors which I'm pretty sure they were called downstream? Are the upper ones just called upstream? Do I have to stick with oem if I have my car tuned and also does anyone have a picture or diagram of how to get at these and where they are located? Thanks for the help!
  17. Q50 General Discussion Forum
    So I found the aftermarket exhaust I was to go with, it’s the ark performance exhaust. I have a 2017 Infiniti Q50 premium btw. What lower down pipes should I get with these? I was thinking of the ams straight downpipes but it seems they have different ones. When I asked ams through an email they...
  18. FAQ and Troubleshooting
    Hello Q50 fam. I just bought a 2019 Q50 Lux 2 weeks ago. I installed Megan Y, eBay midpipe with the 2 resonators, and helmholtz axle back. When I accelerate hard or step on it I hear a few pops underneath the car. Sounds like at the y pipe to cat connections.
  19. Q50 General Discussion Forum
    Found this axelback on FB marketplace for $200, got him down to $130, it's in pretty good condition. He said he'd installed that magnaflow muffler to help reduce drone that he said he got with the regular remark axel back. Just got her installed (sound clip below). Wayyyyyyy better than the soul...
  20. 3.0t
    2018 Luxe Q50, fast Intentions LDP’s finnaly came in, baby GTR sound has been achieved lol. I wanna have the exhaust as least restrictive as possible before I start tuning, currently have the LDP’s and Remark Axleback Muffler Delete. Would a mid pipe and Y pipe be neccesary to keep from...
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