Recently we brought out Toyota Prius Gen 3 to get the cat shield installed due to active catalytic converter thefts in OC (8 stolen that week), and Johnny was very nice to schedule me in and answer any questions I had. They got the job done fairly quick and in a timely manner, and was nice that they knew what they were doing and no trial and error on my car when installing a shield like this. They were professional, nice and quality work you can tell and KNOW what they were doing etc. I am usually anal with any installation so I found Johnny thru a youtube video of them doing it on another Prius. Job well done and happy client, will recommend these guys 100% and already posted in our LA Palma community forum and Google reviews with whoever that needs it, thank you again team and keep up the great work! read more

See all

Terrible welding on my exhaust, had redone at plaza muffler on glassell in Orange California read more

See all

Excellent place for service , these people know what they are doing , I couldn't imagine getting a better price any where else especially for the quality of work I had done. Would recommend this service! read more

Johnny is an awesome owner and operator! He took his time to answer all of our questions, referred us to a place where we could pick up the part we needed, and installed it. This was all done within about 24 hours. He also charged us much less than you would have to pay if you went to one of the chains. read more

Johnny - owner and his team did a FANTASTIC job replacing catalytic converters on my 2011 Honda Accord. I HIGHLY recommend these them for any car repairs. Thank you Johnny. read more

Overcharged, they charged me $200 to install a simple muffler that took 10 minutes. Heard good stuff about them, but they overcharge like a mf. read more

Absolute RIP OFF!!! The owner said he'd install some parts for me for $290. After the job was completed the man at the counter rang me up for $880. The counter worker barely spoke English, so I thought he had just made a mistake. The owner walked over and said that he had to do some additional work for the system to fit... that's fine, but why not ask me before doing it!? The owner would not lower my vehicle off the lift until I paid. I'm never going back here and have filed several complaints and tips to HSI & BBB. Go anywhere but here, I warned you. read more

Poor materials and terrible customer service. The welds on my muffler and exhaust tips look awful. I'm pretty sure I have a few leaks from the subpar welds. I tried to get my money back, but was cursed out by a worker or the owner (not sure). read more

I purchased a system through these guys 2 months ago, they did the work pretty quickly, but the guy charged me more than what we had originally agreed on. I don't think it's fair to undermine customers like that. On top of that, the system I purchased through them is already rusting and there are 4 exhaust leaks where the welds are poor (according to the new exhaust shop I go to). I tried to speak to the owner Johnny, but he was curt and rude. Wish I never came here. read more

Do not go to these guys for hitches, they dont know what they are doing! And they are not like the original plaza muffler gang! I accidently ran across these guys sorry i did! Wow never again! I found the original guys off Pixley in Orange see Carl much better to work with, he was the original guy i dealt with before they moved. They have to refo what Orange Plaza Mufflers, they may be great at mufflers but thats about it! They are not hitch guys no hitches! read more

The mechanic installed my catalytic converter upside down. This created many issues when trying to get an affordable smog check. Now, I have to find a place with a hoist (they charge $30 more), so they can visually see the number and not take someone's word on the repair receipt. read more

This spot is always on point both with work and prices, probably one of the last spot I trust with my exhaust needs and customers cars. Johnny is a good guy and can be trusted with anything I need done without any hesitation. He always works with me to get the pipe ran the way I want and tucked nice for clearances and hidden look when needed. Thanks again johnny read more

Extremely satisfied and great price! Took my 07 F-150 for a flowmaster and exhaust tip. They helped me find the right model, work was done in leas than 30 minutes! Love the way my truck sounds, could not be happier. Will definitely refer my friends and family to OPM. Thank you! read more

Always fast quality work!! I would recommend to anyone. Thanks for the muffler delete!!

Great service! Awesome customer service. Go check them out for you cat, & muffler needs.

Went to a few places before coming here. I needed a brand new catback exhaust fitted onto my jeep. Since my jeep is lifted, the suspension shifted and it wasn't a simple bolt on that I could do myself. Other places were going to charge me "a few hundred" to fix it, or tried to sell me into them installing a brand new custom system. I remembered I went to Orange Plaza Muffler a while back and they did some minor work on a previous car I owned. I drove right up and asked about the fix. They quickly had me pull my jeep onto the rack and I was in and out in about 20 minutes. They only charged my $40 and the fitment is exactly what I wanted. Highly recommend these guys and I will be coming back for sure if and when I have exhaust work needed. read more

This is the place if you need muffler or catalytic converter. They were not just nice and offered a fair price they explained what they had to do. They were fast and not bait and switch. I dropped off my sons car and it was ready in an hour and a half. The shop is at the back of a collection of auto garages but don't let that bother you - they are totally professional and affordable! Call them - you will agree!! read more

I wanted to kill two birds with one stone while visiting Orange County and found Orange Plaza Muffler via Yelp. I was an hour away coming in from the Valley. I needed a simple bung that was supplied by a brand new AEM wideband gauge welded in to my header or x-pipe so that the supplied 02 sensor could be hooked up to make the gauge fully functional. Keep in mind that the gauge was already installed with all wiring done and already zip tied to the transmission and ready to go. I called beforehand to see if this could be done and if so what was the ETA. I spoke to Luis and he said $25 to do the job and that the would be 1 hour. Mid conversation he rudely interrupts and says, "I'm busy working on a car so..." As if it's my fault for him picking up the phone and trying to give him business lol. I already had a bad feeling after experiencing that business tactic, but proceeded to drive there since my choices were limited since I wanted to keep it in the Orange area. I rolled up about 30 minutes later and spoke to Luis. It seemed as if he just didn't want to do the work. He first said that my car couldn't get on the rack, but i corrected him and said that my car is on airbags and actually lifts higher than stock if needed. He then said that the $25 only covered the welding of the bung hole and although all of my wiring is already in place that he wouldn't hook up the 02 for me. I would have gladly agreed to the release of liability if he had clarified that he would just connect it to the bung, but did not want to take any responsibility for anything outside of welding the bung. I was desperate so I was fine with hooking it up myself later if needed, but then he said "well like I said the wait is an hour" (after the drive already killed 30 mins). At that point I just went with my gut feeling and went to another muffler shop. The next shop charged me less and hooked up the 02 sensor no problem since all of my wiring was all pre-run. read more

fantastic work and very knowledgeable owner and worker (2 man team)! great prices and outcome on my 2.5" custom bent glasspack dual exist exhaust on my 2014 ford fusion titanium 2.0 turbo! sound is so nice and performance on my turbo is nicely increased too read more

See all

I have been going to this place for years and they have always been great at there job Johnny knows his stuff one it comes to doing muffler work I tell everyone that needs muffler or a catalytic converter to go here i think they are the best muffler shop in orange Orange Plaza Muffler is at 822 w. angus ave. orange ca, 92868 read more

I had recently put on an aftermarket exhaust (not at this shop) and was having fitment issues. He put it up on the lift to check it out and said everything looked ok and it was the best it was gonna be. He got me under the car and showed me what he was looking at and gave me a very honest opinion. He did not try to sell me a different product or force me to change anything that would result in a sale. I appreciate the time and honestly even when it meant he was not going to make a sale. I will come here for any future needs. read more

Came here on multiple occasions before giving a review , all work is quality , welds and metal used have all stood up strong . Was always able to drop car off and get called back when it's ready , family business wouldn't want to take cars any where else , also have always seen they work on a lot of classic cars . read more

Johnny hooked it up. Super great price and I was in a giant rush and he did an entire exhaust system in like an hour. Not only that the work is super custom and perfect. Stoked!! Sending all my friends there. read more

this is the best muffler shop in orange county! two thumbs up! they understood what i was expecting and took the time to explore all my options! i was very pleased with the look, sound and feel of my exhaust setup! not to mention it didn't break the bank and it was all complete before i knew it! im bringing my s10 next weekend! you guys rock! ask for mr. moffles read more

Definitely recommend Johnny's spot. Took my GX470 in since previous owner had stock muffler and Johnny recommended the Magnaflow.. What a huge difference! Make the truck sound like a powerful truck. Less than $150 and quick!!! Thank you! read more

Friendly guys! Family guys! Excellent job. These guys really take the time to do the job properly and make everything structurally good looking as well as visually appealing m. read more

Luis was amazing! Dropped off my 4Runner and in under an hour and WAY below the cost I was anticipating, I drove away with the car running better than it has in years! read more

This is the most honest shop i've ever been too. replaced my catalyst converter. and i thought i needed brakes and he said my brakes were good, i wouldn't have know the difference. I will take my car here for all my repairs. Johnny was really nice too. read more

Great shop here, very professional workmanship. They have been in business for many years. They were able to fit us in on a busy day and completed the work in a very timely manner. We recommend them highly. We will definitely return to Plaza Muffler of Orange for additional exhaust jobs in the future! read more

Really nice guy with nice prices. I damaged the exhaust on my 4.0 Jeep Cherokee off roading and he was able to put a new muffler on and attach my existing cat for a hundred ten bucks. The muffler he used is a universal called "AP Enforcer 2" and so far I like the sound of it read more

These guys are pros! They understand complicated exhaust jobs and give very reasonable quotes. I spoke with the owner over the phone and he realized when I showed up at the shop he quickly gave me an updated quote that matched the increased work they were gonna have to do. They completed the work quickly and it was quality work! I'm very happy with the result. I will definitely be coming back. read more

Great place and great prices. I take a few cars to Luis and just drop them off to get work done. I had no such thing as a bad experience. If you are not a demanding and feel you are entitled to be treated like royalty, then you will save a lot of money at this place. read more

I had to go to these guys a few times to get several things done on my car. Every time I came they immediately got to work on my car and had it done way before they said they would have it completed. Friendly atmosphere but really not much to look at and nowhere to sit so you have to go somewhere and nothing is really around in walking distance. Aside from that Johnny and Luis are great guys and helped get my car back in check. Gracias amigos!!! read more

This place rocks!! I drove down from Sacramento last night and had an issue with my muffler needing to be fixed ASAP. I was in and out in less than 30 min!! Muffler on and off cut and placed/welded on properly. I now have piece of mind to enjoy the rest of my weekend. Reasonably priced and nice people. Thank you so much for your help :) read more

I have been coming here to get my exhaust work done since they opened their shop, the owner is very honest, fair pricing and will never up sell you anything! I just recently took a hot rod in for full exhaust system and after not being there for over a year he remembered me immediately! He put my car up on the lift right away went over it with me and told me it would be ready the next day by noon! At 10am I received a call (not common nowadays) that it was done and the work turned out phenomenal! Definitely the best exhaust shop around! read more

This guy over chargers worked for 10 minutes charged me $40 for a simple exhaust work.

I had a bad muffler and gave Luis a call about a replacement muffler , Luis said to bring the truck in and would have done within a few hours my dad had drop off the truck and picked it up later that day. All said and done I had a new quite muffler on my truck and hit the road to big bear lake . During my trip my truck became quite loud so I stopped for a look . To my surprise I found a little muffler most likely a stock replacement for a Honda Civic not suitable for Ford F-350 . I tried to takes to Luis, but after a few minutes I was told that I got a "good deal for a quality muffler".and had no interest on my concern nor did he want to look at it. I'm letting my bank deal with him. Beware of this place read more

My experience at plaza muffler was one of the best at a repair facility!!! Johnny knows his stuff he is honest and knows his stuff.... I just bought an old truck and needed new exhaust from the manifolds back not only did he improve the sound but he was very professional, and detail oriented with his work, I have found a new place to take all my vehicles to but will recommend his shop to all my friends and family read more