Frequently Asked Questions

Have any question for us? We get a lot of questions, and we have collected the most commonly asked ones here. If you don’t find the answer you want on this page, feel free to give us a call for more information.

Q: What size exhaust is best for my diesel truck?

A: For most of the vehicles out there, a mandrel bent 4-inch system is more than sufficient. Anything larger than that can result in a droning noise inside the cab as well as a loss of torque at lower RPMs.

Q: Is dual exhaust better than single?

A: In some applications, yes. In scenarios where torque is the main goal, a single tailpipe is preferred. In higher horsepower and higher RPM applications, a high flow dual exhaust is best.

Q: Will a power programmer void my warranty?

A: All programmers have a “return to stock” option, but it is best to speak to your service department before purchasing a tuner for a vehicle with factory warranty.

Q: Do you service just trucks?

A: Not at all. We service all makes and models, import and domestic, cars and trucks. We even service motorhomes (powertrain/chassis only).

Q: Do you sell accessories or just performance parts?

A: We sell a full line of accessories for cars and trucks.

Q: If you don't have something in stock, how long do I have to wait to get it?

A: Generally, most things are available overnight or within 2 days. In some cases where parts need to be special ordered directly from the vendor, it is generally 2 to 3 weeks away (assuming the manufacturer has stock). Additional freight can always be added to get the parts faster.

Q: Are your technicians qualified?

A: All of our technicians are certified with the province of Alberta and receive ongoing training to keep up-to-date with the new vehicles.

Q: My truck is pretty heavy. Do you guys have the equipment to work on it?


A: We have two 4-post hoists that are capable of lifting 20,000 lbs or more. This way we can work on them safely and efficiently.

Q: If I have a service appointment but cannot be there during your hours for drop off, what do I do?

A: Here at Unlimited Performance we do what we can to work with your schedule. For our customer's convenience, we have a locked drop box for customers to drop keys off when the business is not open. All the customer has to do is fill out/sign the drop off the envelope and we will collect the keys when the store opens.

Q: Do you work on Motorhomes?

A: Yes! We are fully equipped to perform regular maintenance on small to large motorhomes. Our company has been working on motorhomes for over 25 years, improving fuel ecomony, torque/power gains, and drastic suspenion/steering handling improvements.

Q: Do you offer custom tuning?


A: Yes! Unlimited Performance is happy to be able to offer in-house chassis dyno tuning, as well as diagnostic testing. We are also equipped to perform custom tuning on most domestic applications. We are a Diablosport CMR dealer as well as HP Tuners.

Q: If I have a service appointment but cannot be there during your hours for drop off, what do I do?


A: Here at Unlimited Performance we do what we can to work with your schedule. For our customers convenience we have a locked drop box for customers to drop keys off when the business is not open. All the customer has to do is fill out/sign the drop off envelope and we will collect the keys when the store opens.

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Visit Us Today

Come and view our expanded showroom in Calgary.

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Calgary Specialists

We are one of the few shops in the area that offers custom tuning and dyno services.

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