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exhaust

  1. [SOLVED] 2015 GT to GT 350 Intake Manifold Swap - error codes

    Hey everyone, I made the decision to replace my stock 5.0 intake manifold with the GT350 voodoo. I did this because I was having persistent P308-P306 misfires and I read the GT 350 manifold could potentially solve those issues (it did)! Unfortunately, now I have a new mix of error codes I’m...
  2. AWE Sale at Lethal Performance!

    Hey Guys! The AWE SALE is now live, so be sure to SAVE ON AWE EXHAUST! From now until March 12th, 2024, save 15% on AWE exhaust systems at Lethal Performance. This goes for axle backs, catbacks and all tip finishes. No code is needed either. All you have to do is add it to your cart, and enjoy...
  3. AWE Sale at Lethal Performance!

    Hey Guys! The AWE SALE is now live, so be sure to SAVE ON AWE EXHAUST! From now until March 12th, 2024, save 15% on AWE exhaust systems at Lethal Performance. This goes for axle backs, catbacks and all tip finishes. No code is needed either. All you have to do is add it to your cart, and enjoy...
  4. Kooks Sale at Lethal Performance!

    Hey Guys! The Kooks sale just went live, so do not miss your chance to save 10% on Kooks exhaust and products! We included an even more special sale on the popular 1-7/8 Headers (SKU#: 1151H411), so be sure to check that out as well! This sale will be valid for all of March and will end on...
  5. Kooks Sale at Lethal Performance!

    Hey Guys! The Kooks sale just went live, so do not miss your chance to save 10% on Kooks exhaust and products! We included an even more special sale on the popular 1-7/8 Headers (SKU#: 1151H411), so be sure to check that out as well! This sale will be valid for all of March and will end on...
  6. Texas Cat Deletes GT350 ONLY

    Looking to sell my cat deletes. Manifolds not included. Located in DFW, TX or can ship on buyers dime. $150 + ship. Guy I bought these off of has rewelded the drivers side flange, I’ve had an O2 sensor bung rewelded. $650 retail. Overall good shape.
  7. Retrofitting active exhaust

    Hey everyone, I just bought a 2019 mustang gt premium pp1 and it has been great. I was searching for months to find one in my region with all the packages I wanted and finally found this one. After I bought the car I realized it did not have the active exhaust. I’ve seen a bunch of posts of...
  8. Roush Active Exhaust Compatibility

    Hello, I've finally got to a point where I can install an exhaust on my Mustang and am looking to install an active-type exhaust on my non-active exhaust 2019 GT. My original plan was to buy and install Roush's iO Active Exhaust Kit as it was perfect for me (loud for when I want, and quiet for...
  9. Long tube headers

    I recently bought a pair of kooks catless long tube headers a few days ago. I didn’t buy the connection pipes because I didn’t want to drop an extra $800. Do I absolutely need them or can I buy the connection adapters from lethal performance or kooks website? I currently have steeda’s h pipe.
  10. New Resonator Choice | 2018 GT

    Hey all, first post on here. I have a 2018 GT that is currently straight piped minus headers and that needs to change. The car is essentially true dual to quad tips. Current Setup: Stock Headers + Cats --> Resonator Delete (no X/H pipe) --> MBRP Pro Axle Back. I'm looking for options that...
  11. West Virginia Roush catback used

    I ended up changing my exhaust to a different sound. This exhaust was on the car when I bought it at 17k miles. Car has 19k miles on it currently. The x-pipe I changed over to an h-pipe from Steeda. All stainless steel. $500 obo
  12. Texas WTB: Kooks or ARH Offroad Longtube Headers

    I have a set of ARH on order but huge lead time with most header companies. Looking for a set of either Kooks or ARH headers with offroad connection pipes. Located in DFW, TX.
  13. Performance shops in Arizona 2023?

    Hey everyone, I am located in Tempe, AZ. I'm looking to get an MBRP catback exhaust installed on my 2019 Mustang Ecoboost and was hoping to get recommendations on a performance shop with experience that doesn't break the bank. This is the first mod on the car and looking at existing threads on...
  14. Wisconsin Steeda Mustang 5.0L H-Pipe (2018-2024) with heavy duty clamps.

    Steeda Mustang 5.0L Coyote 304 Stainless Resonator Delete H-Pipe (2018-2024) with Vibrant heavy duty clamps. Was on my 2019 for 2000 miles. It is recommended to not use provided clamps and purchase Vibrant TC-Series Heavy Duty Exhaust Clamps instead. Theses recommended clamps are included...
  15. Drone? Raspy?

    What does drone and raspy sound like??
  16. Solo performance

    What Solo performance catback produces the deepest tone? Mach XV, Thunder and Street Race.
  17. Kooks Headers for your 2020+ Shelby GT500 IN STOCK!!

    Hey, ALL! Fresh out of the Kookin' with Kooks Oven! A fresh shipment of their 2 x 3 Headers & Connection Kit ready to go! Avoid the wait times and get Kookin' with Kooks! MATERIAL: 304 Stainless Steel COLOR: Stainless Steel TUBE DIAMETER: 2.000 in. Check them out here --> Kooks 2" x 3"...
  18. Outside of North America WTB/WTT Magnaflow Tru-X resonator

    Hey guys, I have a magnaflow tru-x resonator that I’m look to trade for a stock resonator. Idk why but I’ve lost my taste in the magnaflow and prefer the sound of the factory resonator. Anybody wanna trade? The magnaflow was welded onto the catback then I bought an SR performance x pipe and...
  19. Exhaust Harness Replacement Help

    The red retaining clip on my drivers-side active exhaust is brittle and broke off. I can't seem to find the replacement part anywhere and even Google had limited or no results. Here is a photo... anyone know where I can find/purchase a replacement harness online?
  20. High pitched exhaust!

    Hoonigan recently made a video showcasing a Celeritec exhaust on a ls3 c6 corvette. The goal of the exhaust was to change the exhaust note to be higher pitched (more like a flat-plane crank v8). The exhaust uses a 4-2-1 header that combined both banks into one big pipe which then split back...


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