Racing Trenz

I would list the amount of problems we’ve had with this place but it wouldn’t fit on the whole screen if I tried. Just don’t do it.

ABSOLUTELY NOT A ROTARY SHOP. I had my car «tuned» by Yi. I called a few shops to find someone who could tune my 13b on a haltech and Yi definitely sounded like he knew the most about rotarys, so I went with him.

I do like the shop itself, it has a local skate shop feel which invites you to hang out. When Yi went on to tune my car, he started talking down on haltech. He said that you can’t control the settings. He also told me I have to drive my car under 3k rpm for 100 miles on my full rebuild.
Well, I called mazdatrix and asked them how far I have to drive to break in my full rebuild, they told me to just give it the beans. I also asked who tunes their cars and they turned me onto RRR, who also tunes professional Formula Drift cars and specializes in rotary and haltech. He told me that haltech is made under the same umbrella as MoTec and you can literally unplug a MoTec and plug in a haltech seamlessly.
Yi tuned my rotary like a piston engine and the fuel map showed that to me when I got home. Secondary injectors kick in around 3800rpm, so the fuel map dips right there to account for the extra fuel, mine was a straight rise. He never set up any safety parameters, so I could have also blown my engine up. They may do basic repairs and installs alright, but highly modified is out of the question. If you want to be talked down to by a (thinks he) knows it all, come here.

So this is one of the only all wheel drive Dynos in Denver. The guy that owns it is is really cool and answers any and all questions.
He has Dynoed so many cars, he’ll tell you what your car puts out at the wheels stock here at 5300 feet. It is impressive.
Scheduling takes a day or two and runs $ 65, not a bad deal.

I was compelled to write a review after getting my car serviced here. I had some repairs on an old Toyota van and my son said take it here, the guys are good and never do repairs unless they are needed. I had a fair amount of work done and the price was *way* less than the dealer. They really know their stuff and I have to say I was quite happy with the work. It is not the nicest place around in term of looks but I just care my car was serviced correctly, so I can recommend this place highly.

These guys installed some downpipes on my 2008 BMW and did a great job. The price was reasonable for the difficult job. They got it back to me in the same day, and it works great. They know what’s they’re doing, and I’d trust them to do any further work on my bimmer. Thanks!

It would be nice if they did NOT Use the street by their shop as Drag Strip. At least 5 times a week Idiots are going 50 plus MPH on a street that is 2 blocks and a dead end. It may not be the staff driving, But it is there customers. How about a sign no testing in the Area. How about there is a Gym place with tons of kids going to and from. How about the kids playing in the Apartments where the street dead ends. Have some RESPECT for your fellow people. Because they allow this please don’t shop here. If you do shop here DON’T PUT OTHERS IN HARMS WAY. If you want a fast car, take it to the TRACK NOT THE HOOD. Poor Ownership is putting others in DANGER.

Love Love Love this place! They have such great prices and are so fast!!! They take extreme care of their customers and are so pleasant and professional, this is where I will always be taking my car. I had to get some work done and all other places estimated me $ 900+ Racing Trenz did the work for $ 650

They have done excellent work and have really saved me money over the dealer. My only criticism is that they should have done a test drive after a repair and they would have noticed an additional problem.

Took my car to several shops to get my 00 Honda Civic SI to pass emissions. None of them helped, in fact the #1 «emissions» place told me that my current setup was impossible to pass emissions. I told my long story to Racing trenz and they patiently did a diagnostic and spent several days going over my car with diligence I’ve yet to experience from other shops. Yi, an mechanic or owner or both I don’t know was very knowledgeable and was not only able to fix my car, but explain in laymen’s terms what I was missing and what was necessary to pass. Highly recommended shop. Would refer to anyone and I feel I have made a new friend. 5 Stars.

After having one bad car repair experience after another, I ended up at Racing Trenz. I had a check engine light come on after I had my clutch replaced at another shop — I was so overwhelmed (it was much more of a fuster cluck than it sounds like), I ended up buying a new car and letting my old one just sit until I could muster the strength to deal with it.
I took the old car (2003 Kia Optima) into Racing Trenz and here is what they did: They ran the check engine report and did an inspection of the cause of the light (turned out to be a knock sensor and spark plugs). While Auto Zone will hook it up for free, they don’t do the inspection. Racing Trenz charged me $ 25 to do this, which is great (he said they usually charge $ 75 for it).
To do the repairs, it cost a total of $ 220. We looked up the knock sensor and indeed, they got it about $ 15 cheaper than Auto Zone. New spark plugs were $ 20. So $ 75 for the sensor and $ 20 for the plugs = $ 95 for parts and $ 125 for service. They did the work in 20 minutes. I couldn’t be happier.
They gave me the old parts, the check engine light is off, and the car is actually drivable now! (It was slipping and horrible before)
I will be bringing my 2001 GMC Sierra in to them to have the differentials serviced — they will do it for $ 100. I called around for pricing, and that is about 25% cheaper than anywhere else.
Also, they are very friendly, though I did get a lecture about tune ups that kinda left me feeling like a scolded puppy, but it was funny, quite an experience… I’m not sure if he is the owner, manager, head mechanic, or what, but Yi is a very pleasant guy to work with.
I would definitely recommend this shop.

The basic work that they do is good. Customer service/​attitude is lacking

Are you serious about this place? A few guys got together and decided, hey… lets get some parts together, open a garage, and rip off the people who come in here. Parts here are a totally rip off, the price of simple parts are about 25−50% higher than retail prices, sometimes even more. If you don’t know anything about cars, it’ll be your worse decision to come in here, they will try to get every penny from you for the dumbest things that aren’t even wrong with your car. Typical money grubbing mechanics. Example: fog lights for my car were $ 40 a piece so $ 80 for a set… I found the same ones on E-​bay for regular price for $ 30, and thats standard, all sellers were selling for that much.
«There’s a tiny unicorn in your muffler jumping up and down poking holes in your pipe, we’re going to have to replace your entire exhaust system with the top of the line exhaust so that has an invisible force field that repels those unicorns, easter rabbits, and goblins, so that those unicorns won’t come back anymore.»
The only reason why I’m giving them two stars is because they have a nice Skyline R34 showcar.