Mighty Muffler

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I arrived with a code P0421 a catalyst failure and left $500.00 lighter with a code P0421. He replaced a flex pipe $150.00, fuel injection/ throttle body clean and tune-up (plugs and wires $225.00). I came here asking for a catalytic converter. He said the other people didn't know what they were talking about and I just need a good cleaning! After coming back two times he finally agreed to sell me a catalytic converter installed for $800.00 more. When a came back the second time I accused him of only having $100.00 and two hours in the project, and he said that he had invested $123.63 or a 400% mark-up for 2 hours of work.

They really did an honest good job. Had a stock '04 sissy V6 mustang and they turned into an acceptable true dual exhausted manly Stang that I was no longer ashamed of driving with a paper bag on my head. Horse Power gains felt immediately (don't know how many, but I could tell) No need to waste money on overpriced stuff, they make all their pipes there and mine were on for several years, sturdy and stainless until I sold the car. I also tried on a few different mufflers to test sound, and they changed them in a snap using the same pipes. Also, don't waste your time with "cold air" intakes, I made that mistake. The exhaust is what gives you the noticeable extra horses. Very fair price and service in my opinion. Will be back for my next custom exhaust.

I took my vehicle in for a new muffler. They installed a Walker SoundFX muffler (telling me it would be more quiet) - and it was still just as loud as the muffler they just took off the vehicle. In addition, they didn't use a muffler that fit my vehicle, but had to cut the pipes and weld it onto the vehicle. I went back about a week later because I was unhappy with the loud sound, and they said that a resonator would help reduce the sound. So they cut the tail pipe and installed the resonator near the end of the tail pipe. I STILL had a rumbly vehicle - very very unhappy. My husband finally purchased the correct muffler (Walker QuietFlow that was made to fit my vehicle) and took it back to Mighty Muffler and had them change out the mufflers. They did, but the resonator was still on there. We were still unhappy with the loud rumbly sound from the resonator, so my husband took the vehicle to a different muffler shop to have it removed. The repairman stated that it was NOT a resonator (like I was told it was), but a Glass Pack muffler that was put on my vehicle - and that it should NEVER be installed at the tail-end of the exhaust pipe. So he removed it, put a proper tailpipe back on, and viola! no more loud rumbly sound. Mighty Muffler charged me $110 to install a $29.00 Walker SoundFX muffler, while telling me it was a premium muffler. Then they charged me $80.00 to install the resonator - which was actually a Glass Pack muffler that can be purchased at cost for $12.00.If you want to be lied to, and spend money on parts that are NOT what they are supposed to be, then go to Mighty Muffler. Otherwise, stay away from them and go somewhere reputable.

I had both sensors and the catalyst replaced on my 99 Astro. Paid as quoted price. Staff was very professional,and interested in my satisfaction. Even though their shop is 70 miles away, I trust them and will return.

Went in and got performance duel exhaust. My truck runs smoother, stronger, and even has a nice ROAR to it =). I payed what i was quoted. I even get 2 extra mpg on the highway now.