I used Mike to replace 2 catalytic converters on my car. He did the 1st repair in a timely manner and gave me a warranty sheet to send into the company, Cateran and the warranty was supposed to replace the part if it went out before 5 years. The part actually went out before 12 months, and then he alluded that the warranty wasn't worth the paper it was printed on. If I wanted the part company, Cateran, to honor their warranty I would have to leave my car with him for at least 10+ days so that Cateran could get a warranty rep to come out. Needless to say there was no way I could leave my car for 10 days, so I had him replace the catalytic converter again and pay again. In the interim before the 1st repair went bad, I had him replace the 2nd catalytic converter. He used the same parts company, Cateran, and gave me a copy of the warranty to send into Cateran, which I did again. Now that the 2nd CC has gone out before 12months, Mike will not take my calls. Additionally, I have reached out to Cateran regarding their warranty (email response only, no phone#) they have not responded as well. Buyer Beware!! read more

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I had an aftermarket exhaust that another shop installed for me that caused drivability issues about 3 years. The issues started showing up after I had the exhaust installed but I wasn't sure if it was actually caused by the exhaust. The issue was the exhaust vibrating during wet rainy days when cruising on the highway severely where it bashes against the chassis causing the car rear end to fishtail where I have to slow down and focus to keep it in the lane on the highway. My personal mechanic helped me confirm what the issue was and showed me on a lift that my exhaust was merely millimeters away from my drive shaft. She showed me the exhaust was mounted kind of crooked and an exhaust specialist can help me correct the fitment. I was disappointed with the previous exhaust shop I had the exhaust installed at so decided to try a different establishment and found my way to Haddad Discount Muffler which wasn't far from the previous exhaust shop I initially got my exhaust installed at. My biggest problem with the other exhaust shop is that the owner just lets his junior do everything practically unsupervised which lead me to the situation I was trying to resolve. The owner of Haddad Discount Muffler took more of an active role. After I described what was happening with my exhaust and showed him where the exhaust was rubbing, he told me what he can do to resolve it. I ask him about the price quote because he doesn't except credit so I will have to used debit, I had to make sure the job was within my means to pay. He quoted me between $100 and $200 which was a safe range for me. I then told him the exhaust tips was crooked, and I can never get them to be symmetrical. He said he can adjust them and spot weld them, so they stay in place. I then finally told him I got new tips in the back of the car and that is when he said, this may affect the price as he has to see how well they fit. Now he got his junior over to work on my exhaust. I was worried as I can never seem to get the people with the most experience to do the work, but the owner took an active role. He told his junior where to cut, where to weld, he shifted everything into place and lined up and measured everything meticulously and kept asking me if I'm happy with where everything was sitting. I was happy to see him measure the distance the exhaust tips sit from each other and how far the sit from the side and top of the bumper. The replacement exhaust tips I have given him to install were much shorter than old cheap tips they replaced. Mike was skeptical that they would fit but I told him they don't need to protrude if they hug the bumper neatly, I would be happy with it. When he was done, the quad exhaust tips were sitting tight and symmetrical within the bumper, vastly improved over the way the previous tips fit. He had his junior spot weld them in place, so they don't shift but allows for easy removal if taken to exhaust specialists. The price ended up being well under $200 and I was very happy with the job. read more

UPDATE: Returned as I promised. Got my CC restored using a US made generic rig. Arrived early, left early. Came back later, shop bays full. Mike honored my quote even though it was a month old. Lots of small business vehicles in attendance. Now my car sounds brand new instead of like a Harley! Price reasonable for value delivered. Didn't have to engage my insurance company, saving even more. Too bad the dealer refused to recommend "any old muffler shop"; this one would seem to be a gem. Mike even installed the O2 sensor upon return. Put this one in your rolodex. Another update once I pass emissions... read more

Had a muffler I wanted to swap on my new 2020 truck, Mike showed me the difference between the "New" performance mufflers you can buy (like the one I got from AmericanTrucks) and the older made in USA ones that he still had. We went with a more appropriate choice for my V8 and I will be returning the other Chinese one I bought blindly. Mike was very nice and attentive and they completed the work (drive up) in short order and the truck sounds like it should now, deep and growly! read more

I came to Mike on yesterday, 10/3 about my car continuing to shut off while I was driving. I explained my situation (check engine light on) and was rushed through my explanation (as it was close to 6PM and he was clearly ready to go). Based off of this I should have followed my first mind, but I was over 30 miles from home, w/ a car that was turning off and on in rush-hour traffic. Rather than hook my car up to a machine to run it, he told me it's my exhaust. Ok, no worries. I ask him to verify that this will fix my current issue as I didn't want to pay for something that wouldn't help with my current issue. I pay him $200 AMERICAN DOLLARS to fix this issue, and 30 mins after leaving him my car does that same thing repeatedly. At this point, they were closed. I call him back this morning hoping as a business owner who FAILED me the day prior, we could come to a resolution. - I thought wrong. Mike overtalked me, took 0 accountability, had 0 referrals or possible ideas of what to do next.. he ended up admitting he is NOT A MECHANIC (his words, not mine) "I just do muffler." Will he get you in and out? Absolutely. He needs your money. Will your problem be fixed? If you have a couple hundred to spare and don't mind rolling the dice to see.. try him out. read more

The owner here (Mike) was thorough and honest. I came with my own part, unfortunately not the correct size, but nonetheless Mike was able to change the part and customize the piece to fit my car properly. He was completely finished with the job within 30 minutes. I came to here based off his honest reviews. Thank you Yelp for always helping me navigate to all the right places. Thank you Mike for being honest and efficient. read more

Please don't go here!!! Horrible customer service they will scam you!!!! When what they did to your car breaks or goes wrong they will not take responsibility. Mike is rude and entitled. On their website it says "Providing you with honest and excellent service since 1999!" bunch of lies please don't waste your money here you will be very disappointed and unhappy. read more

Called ahead and got an estimate. Went there the same day and pulled right into the garage. Work was done really fast and was given a discount as well. Very nice owner! read more

I just left the shop and could not be happier with the service and customer service. I called they got me right in and replaced my converter. Thanks JC read more

Mike has always handled all of my exhaust repairs. Always very honest, fast turnaround on repairs and professional! I recommend Mike for all your exhaust needs. Thank you Mike for the 15 years of service for all my vehicles! read more

Mike and his protege was awesome working together to install my MBRP exhaust. Problem solved it and got it done in an hour. Great price too. Highly recommended!! read more

Haddad Discount Muffler & Machine - MBRP install - Auto Repair Near Me - Norcross, Georgia

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After calling numerous (about 8) shops asking if they knew of a place that did custom exhaust and fabrication, they all mentioned one place (I won't name them here) that I didn't want to go to. I've heard multiple complaints and bad reviews about them, even though they are right down the street from my house (Marietta/Kennesaw). I thought all hope was lost and I was going to have to do business with them... ...then I found Mike and Haddad Discount Muffler and Machine. Don't let the word 'discount' have you thinking shoddy or half-assed either. He only uses the best products and didn't add any 'fluff' to the job to raise the price. In fact, I liked him so much I asked him to do a bit more on my particular setup while he was in there fixing things. Mike was extremely nice, very honest, and direct with me. Which is what I expect from someone working on my car/truck. I'm very particular on how I want things done and Mike and his team did not disappoint. Welds were beautiful and best part is, he did it all extremely quickly and efficiently. If you need exhaust work done, go see Mike. Suite 200 at the end of the building. I'll be taking all my cars here for as long as he is in business. read more

my experience at haddad discount muffler could not have been better. mike is very responsive, incredibly kind, and knowledgeable. we were in and out so quickly and for a reasonable price. highly recommend! read more

I found this shop online and decided to go in. Mike is very professional, knowledgeable and friendly. He was very honest with the required repairs and didn't recommend services/parts I didn't need. The pricing was very reasonable and the service was quick. I highly recommended this shop and will return for any exhaust needs in the future. read more

Was having some issues and stopped by here for assistance after a friend referred me. Mike was super helpful and gave me a great deal. Will definitely be coming back here if I run into any issues in the future!! read more

I highly recommend Mike at Haddad Discount Muffler. He is honest, did great work on my exhaust system and charged a very fair price. He also got me in and completed the work quicker than I expected. read more

If I could give this shop zero star, I would. Went for a simple estimate on muffler tip misalignment, the owner seemed very annoyed that he is not even interested to hear my concern, he kept asking who worked on the muffler, "well, no one did, it is just bare stock", I replied, but he immediately denied the repair by saying that repair is my responsibility and not his? What? I was there to get an estimate, not asking for a free repair!!! It was randomly searching on google reviews but never should've gone there first place. Extremely rude and disrespectful to the potential customer. Stopped by "extreme performance mufflers" on the way back, the owner there was very friendly and accommodating on my needs. read more

This place was referred to me by my mechanic of 30 years. (Georgetown Auto next to Chamblee high)They fixed my Toyota Sienna for $800 LESS than the dealer quote. Replaced catalytic converter. Fixed check engine light issue PH0420. Has passed emissions two years in a row now with over 200k miles. read more

Mike does such great work! He is super helpful and understanding. Make sure you are at the correct shop when you get there. Mike's is the last door on the building. read more