Downtown Muffler Service

    Claimed
    Auto Repair
    Closed9:00 AM - 5:00 PM

    Photos & videos

    Photo of Downtown Muffler Service - Hayward, CA, US. Jack fab'd a whole catback system for the G37 and Skip installed some Flowmaster Super 10's on the Charger.
    Photo of Downtown Muffler Service - Hayward, CA, US. Sound nice
    Photo of Downtown Muffler Service - Hayward, CA, US. Work in progress.
    Photo of Downtown Muffler Service - Hayward, CA, US. Tack welding to make sure everything lined up.
    Photo of Downtown Muffler Service - Hayward, CA, US. X pipe and cutouts installed. Great welds. No leaks.
    Photo of Downtown Muffler Service - Hayward, CA, US. Loose pipe from the installation in Santa Barbara
    Photo of Downtown Muffler Service - Hayward, CA, US. Jack Welding the Pipes
    Photo of Downtown Muffler Service - Hayward, CA, US. Outstanding job by Jack, he really knows his stuff! Can't say enough about these guys, above and beyond!
    Photo of Downtown Muffler Service - Hayward, CA, US. HKS exhaust
    Photo of Downtown Muffler Service - Hayward, CA, US. Skip making sure that everything looks symmetrical and OEM like.
    Photo of Downtown Muffler Service - Hayward, CA, US. Oem Toyota tips
    Photo of Downtown Muffler Service - Hayward, CA, US. The boys welded on and straightened out my cock eyed muffler tips. These guys are awesome!
    Photo of Downtown Muffler Service - Hayward, CA, US. The boys welded on and straightened out my cock eyed muffler tips. These guys are awesome!
    Photo of Downtown Muffler Service - Hayward, CA, US.
    Photo of Downtown Muffler Service - Hayward, CA, US. Quick work. Great price.
    Photo of Downtown Muffler Service - Hayward, CA, US. Horrible welding
    Photo of Downtown Muffler Service - Hayward, CA, US. Gorgeous rear view of the custom exhaust.
    Photo of Downtown Muffler Service - Hayward, CA, US. Broken hanger
    Photo of Downtown Muffler Service - Hayward, CA, US. Broken hanger welded onto exhaust pipe
    Photo of Downtown Muffler Service - Hayward, CA, US. Broken seatbelt bracket dude to where they welded a piece of all thread to secure their hanger
    Photo of Downtown Muffler Service - Hayward, CA, US. HKS q60 catback exhaust fit to a q50
    Photo of Downtown Muffler Service - Hayward, CA, US. Fully custom fabricated catback exhaust system.
    Photo of Downtown Muffler Service - Hayward, CA, US. Magnaflow mufflers
    Photo of Downtown Muffler Service - Hayward, CA, US. Broken exhaust hanger
    Photo of Downtown Muffler Service - Hayward, CA, US. Allowed the muffler to press on a brake line.

    Services Offered

    Verified by Business

    Review Highlights

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    About the Business

    Business owner information

    Photo of Scott N.

    Scott N.

    We specialize in Catalytic converter replacement and muffler services. We specialize in custom exhaust systems and have our own benders to create the perfect bends for your car.

    Location & Hours

    Map

    22419 Mission Blvd

    Hayward, CA 94541

    Smalley Ave & A St

    Mon

    • 9:00 AM - 5:00 PM

    Tue

    • 9:00 AM - 5:00 PM

    Wed

    • 9:00 AM - 5:00 PM

    Thu

    • 9:00 AM - 5:00 PM

    Fri

    • 9:00 AM - 5:00 PM

    Closed now

    Sat

    • Closed

    Sun

    • Closed

    Amenities and More

    Ask the Community

    • Q:

      How much to change cathartic converters or how much to fix them?

      A:

      There isn't a set price for converter replacements they are very specific to your vehicle and repairs are not usually possible. Once they have been damaged or failed smog they will need replacing. If you'd like to get pricing for your vehicle call… more

      Jack N., Business Owner 
    • Q:

      Do you guys change cathartic converters mine went bad?

      A:

      Yes they do, they are experts dealing with this type of problem. I highly recommend, save yourself time and money. Edward. C

      Edward C. 
       2 people found this helpful

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    Overall rating

    174 reviews

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    • Photo of Lacee E.
      Lacee E.
      Oakland, CA
      46
      143
      112
      Apr 15, 2024

      My car failed smog test. I was recommended this location as I needed assistance with exhaust system.

      The customer service did not answer my call. However, my call was returned within one business day. The staff was professional and agreed to look over car the next morning.

      At the time of the appointment, the mechanic looked over the car and reset my system to address the problem. They did not charge me for the quick service. The mechanic also reminded me that it's against the law to pay for a failed smog test, which I did not know.

      Super helpful and kind. Highly recommend.

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    • Photo of Andrew H.
      Andrew H.
      San Jose, CA
      0
      5
      2
      Aug 23, 2024

      Installed a straight pipe in Santa Barbara for my Audi s4 and the technician installed it wrong causing one of the pipes to be loose. I'm new to cars and modding so i decided to come here since the reviews were great. The owner was very nice and took me in for a walk in and immediately pointed out the issue with the pipes. I was able to have it resolved within 5 mins and my car sounds great again. Thank you so much I'll definitely be coming back!

      Loose pipe from the installation in Santa Barbara
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    • Photo of Braheem M.
      Braheem M.
      Danville, CA
      0
      8
      14
      Mar 4, 2024

      Downtown Muffler is the place to go! Jack and his daughter Samantha are honest, reasonable, and friendly people. Jack deleted my muffler & installed a quad exhaust system for my Mercedes CLA 250. I couldn't be happier with the service and how everything came out. I highly highly recommend Downtown Muffler Service. Great Value. Great People. Great Atmosphere.

      Jack Welding the Pipes
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    • Photo of Kenneth V.
      Kenneth V.
      Hayward, CA
      163
      2
      2
      Nov 3, 2023

      Samantha was the one to help me get in and out quick. Got my resonators welded on in less than 30 mins, and also thy straightened out my muffler tips for free. I gave them an extra $20 tip because of the hospitality! Great people and great customer service! I would recommend this place for anyone who needs some muffler work done!

      The boys welded on and straightened out my cock eyed muffler tips. These guys are awesome!
      The boys welded on and straightened out my cock eyed muffler tips. These guys are awesome!
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    • Photo of Andrew C.
      Andrew C.
      San Leandro, CA
      288
      6
      2
      Mar 20, 2024

      Brought my 2022 GR Supra in to get an aftermarket exhaust installed on my vehicle since I don't have a lift. Jack was honest with some issues with the exhaust (I bought it secondhand) and offered to fix the issues for me. Pricing was fair for the install compared to other shops that I got quotes from. Would definitely recommend coming here and will be back if I need exhaust work

      HKS exhaust
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    • Photo of Nican R.
      Nican R.
      Oakland, CA
      1176
      33
      5
      Sep 20, 2023

      Quick. Easy. And Jack is THE MAN! Family run, family owned and they do great work. Helped me in a pinch replace my catalytic converter. Extremely helpful and it's running smooth also has plenty of stories to keep you occupied.
      Everyone there is a good time and does good work.

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    • Photo of Bob R.
      Bob R.
      Hayward, CA
      0
      15
      2
      Feb 24, 2024

      My catalytic converter was stolen and I was referred to Downtown Muffler by Mangale Motors as Mangale doesn't do welding.
      I am pretty happy with the results.
      They charged me 3.5% to use my credit card saying that they couldn't afford to pay for my points on the credit card. I said that if I had known, I would have brought my checkbook. They then said that they don't take checks, but that I could have paid cash ($2400). They asked if it was okay to use the credit card and charge the 3.5% ($84). I replied that I didn't feel I had a choice.
      They estimated $1800, but there were extra charges for a flange kit and a resonator which was also taken.

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    • Photo of Joseph W.
      Joseph W.
      Oakland, CA
      0
      40
      Feb 21, 2024

      Bait and Switch Warning!
      I went here by recommendation of a friend. I called in advance for a quote on, Flowmaster brand mufflers. They quoted and said, we have them come down. when I get there, the installer was putting my car on the rack, and I believe it was the owner that yelled over to him, "KNOCK IT OFF". Weird?!?!

      So come to find out when he's got my mufflers to install he did not have Flowmaster. He had "knock off" mufflers! In the industry, it is known to call the generic Flowmasters, "knock offs".

      This was the owners cute little way of trying to be sly and telling his installer to give me the cheap stuff "KNOCK IT OFF" (I.e., knockoffs).

      I told my friend that recommended me and I don't want to say his name, but this is greatly disappointing. He was embarrassed. This place is really shady. I hope people read this and take heed to the warning. This place is not honest. I would not trust them or recommend them.

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      Business owner information

      Photo of Jack N.

      Jack N.

    • Photo of Eddy B.
      Eddy B.
      Hayward Highland, Hayward, CA
      0
      2
      2
      Jan 25, 2024

      Did a great job for a good price too. Super nice people who are very responsive. More than happy with the service and how much it cost in the end as well.

      HKS q60 catback exhaust fit to a q50
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    • Photo of Jason N.
      Jason N.
      San Jose, CA
      217
      56
      Jan 19, 2023

      Wanted to say Thanks to Downtown Muffler for helping me getting my truck back to stock sound. The last month or so I have been messing with different muffler to make my car a little louder. Everything was good for a bit until I drive on the freeway 65mph plus and that little drone was getting on my nerves. Was planing to just buy a stock exhaust but everyone wanted $350 plus for one so I said nope. That was same price as a brand new one from the dealer.

      I appreciate how they broke it down for me what each muffler do and which one will make it quiet again. Everyone I called in a 30 miles radius. They keep saying oh go with this flowmaster or Magnaflow to make it quiet and in my I head I am like ok NO because it going to be the same shit I have right now but different sound and tone!

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