I've been here twice. Jeff and the work at Boulder Muffler have been the best auto repair experiences of my life. Period. First, I had my catalytic converter sawed off my Honda Element and Jeff was quick to replace the converter, worked with the insurance, and put on the protective box so now I drive around stress-free knowing it is protected. Second, a few years later the converter happened to fail and another shop diagnosed the issues and quoted me over $4000 for the repair. Called Jeff up with the issue and he mentioned that the year of that batch for my vehicle had issues and could get it covered under warranty. I left the next day with a new one installed, the car running great, for a total of $0. Jeff is freakin' amazing. Any bad reviews I'd be highly skeptical of and reading between the lines they just seem like petty people. read more

My husband backed over something and banged up our muffler a bit. The Toyota dealership wasn't able to get it back into shape and suggested we go to a muffler shop rather than replacing the whole thing (which would have been $600+). I called Jeff at Boulder Muffler, based on other Yelp reviews. He was friendly and helpful from the start. He got me in the same day, and he checked to see how long the repair would take, so he could save me a bus ride home. He estimated 45 minutes at the most, so I started snacking on the sandwich I had brought with me. I didn't even have time to finish half of it before he was done! Then he billed me a whopping $20 and sent me on my way. Amazing! Hopefully I won't need to see him again soon, but I know where I'm going anytime I have problems in the future. Highly recommended. read more

I had a muffler and tailpipe installed on my 2003 SuperCrew. I asked for a 3" in/out muffler and a 3" tailpipe, and I asked for 'quiet'. Quote was less than any aftermarket kit by far. Jeff installed a big turbo muffler and 3" tailpipe, nicely tucked up in the frame. Job was done in 2.5 hours and the workmanship was great. Lots of clearance around the rear axle and shocks. Truck has literally no exhaust noise, the fab work was exceptional, and the fit was great. Clean and solid install in every way. It was great to drive away in a quiet truck after years of drone and rattles. Previously, I had the resonator on my Volvo removed and replaced with a straight pipe, with the same great workmanship. Great price too. It's hard to find a good exhaust shop, so I highly recommend Boulder Muffler. read more

Like most people, I came into the shop having a pretty bad day. I had done research on local shops beforehand and chose Boulder Muffler based on these same Yelp reviews. I got the service I had hoped for and some help with other minor issues! I felt like I was in good hands and would've been charged a lot more somewhere else to replace a lot of unnecessary parts when only a quick weld was needed. I used Yelp frequently but never truly felt the need to create an account and give a review but Jeff and Boulder Muffler are great. I always feel hesitant on choosing auto-body work providers because 'I don't have a guy' but will always remember this service and will actively recommend Boulder Muffler to friends and coworkers. read more

I called up Boulder muffler one morning without an appointment to see if they could fit in a cat back exhaust install on my Ford Focus RS. This shop is awesome! I believe i worked with Jeff who was a pleasure to deal with. He fit me in day of without an appointment, and he gave me a call when the car was on a lift before he started working. Confirmed that the stock exhaust needed to be cut before it was removed which was nice of them. The work was all done correctly and well priced, I also appreciate the outgoing attitude compared to some gruff muffler shops I have dealt with in the past. I will definitely be bringing my cars back here! Thanks! read more

I wish I could give them 6 stars. Excellent service, excellent price, and the quality of the installation was phenomenal. I had an older 4Runner with a leaky exhaust system, and he completely replaced it, except for re-installing the catalytic converter. He could've charged me for a new one, but his honesty was further proof of the legitimacy of this business. In addition, I wanted the exhaust routed so it wouldn't be so easily damaged while off-roading. He did an amazing job tucking it up next to and above the frame. It sounds great, and you can barely see even see it, since it's protected so well. read more

Jeff at Boulder Muffler is a mechanic you can actually trust. He gave me the best price and did a great job on replacing my catalytic converter on my 2005 Chrysler Pacificia. He took the time to explain the error code readings that he got off my car when he completed the diagnostic on it. Did not take long at all and car is running so much better. I would recommend him to everyone I know. He proves that there are still good mechanics out there who DO NOT take advantage of people. I truly appreciated the great service he provided to me. read more

Highly recommend Jeff at Boulder Muffler. Part of my rear muffler was falling off so my boyfriend jury rigged it with wire until I could get it fixed. I called Jeff who was highly recommended by my mechanic. He fit me in immediately to give me a quick quote on what I thought would be a replacement muffler. Turns out just part of the outside muffler was coming loose. He fixed it immediately and charged me very little for his time. I doubt I would have gotten that same service had I taken it to one of the larger muffler establishments. read more

I wish i could give them 10 stars! Jeff is an absolute gem of a human. as a single young woman im always wary of auto shops but both times i've used boulder muffler jeff has been great. the first time he fixed my exhaust system he was super communicative about everything and charged a fair price, and today i had a bit of an emergency situation and he went above and beyond to help me out and was extraordinarily kind! would absolutely recommend to anyone! read more

I had a completely broken headlight caused by some poor workmanship from another car place. Bringing a car into the shop can be daunting for a young woman, as more often than not, we are not taken seriously by the men working the shop. That couldn't have been further from what happened when I dropped my car off. The people were polite, considerate, and understanding of my situation. I'd definitely come back again. read more

I was looking for a shop to repair a rusted, leaking flange on my exhaust system. I saw all the positive reviews. I discovered they are well justified. Jeff explained options and was very knowledgeable of the particular problem with my yr/make/model. He installed a simple sleeve to replace the flange for a very reasonable price and (as I didn't have a ride) got me going in couple of hours. THANKS!! read more

Great service and solid weld job on my Audi! Only needed some exhaust tips welded onto my exhaust, but I was taken care of quickly and for a reasonable price! I only wish they took appointments. I would recommend for anyone looking for a quick and affordable job. I treat my car like my baby and was nervous to turn it over to a local shop for the work, but have no fear, you are in good hands here! read more

I needed a functioning catalytic converter for a 1996 Ford car. There were none available for that make and model, but Jeff was able to fit an available smaller converter for another Ford model with new fittings that allowed the "new" converter to fit into the available space. That job was finished in about one day and now the car works fine. His reputation in Boulder is deservedly good. read more

This repair shop is amazing! I damaged my exhaust pipes 2 years ago and Jeff fixed it at a very fair price with a good turnaround time. This time I recently had my back of my catalytic converter cut after someone tried to steal it and Jeff explained the damage, did the fix, and I was off on my way. Highly recommend! read more

Jeff has done brake and exhaust work on two different cars for me over the last 10 years. Like many other's who have reviewed him I can't say enough good things about him. Very professional and thorough, honest, reasonably priced, and he's a heck of a nice guy. Can't recommend him highly enough. read more

Couldn't be happier! I dropped off my van before work and two hours later it was done. Jeff was friendly, communicative, and fast. AND he didn't complain about the welding job my friend had done previously... I am happy with the work and pleasantly surprised by the price. Great experience! read more

Honda Element, catalytic converter stolen. Boulder Muffler was my THIRD quote on getting the work done. My experience: One day turnaround. Fair price, over $800 LESS than the next nearest price. Pro work. If you need muffler work - get to Boulder Muffler! read more

Jeff at Boulder Muffler identified a bad catalytic converter replacement which was recently done at another shop. He worked with my insurance company to get the job done right with minimal wait time on my part. Jeff is a competent and caring person. read more

jeff is the most reasonable and trustworthy muffler shop in all of the Denver/Boulder area. He has helped many of my friends and myself when cats were stolen or I just needed basic exhaust help. Thanks Jeff! Kathy Brazin' Hussies Metal Studio read more