--- title: Tuner Page description: this is our growing list for Tuners that use our Dyno Rental facility here in Longmont, Colorado. --- [![5250 Performance Dyno Shop Colorado](https://www.5250performance.com/hs-fs/hubfs/artwork_5250/Snip20170305_123.png?width=122&height=302&name=Snip20170305_123.png "5250 Performance Dyno Shop Colorado")](https://www.5250performance.com/) - [Home](https://www.5250performance.com) - [About Us](https://www.5250performance.com/about-us) - [Fab](https://www.5250performance.com/fabrication-services) - [Gallery](https://www.5250performance.com/5250-performance-car-gallery) - [Tuning / Upgrades](https://www.5250performance.com/performance-tuning) - [Need a Tuner](https://www.5250performance.com/tuner-page) - [Custom Fabrication](https://www.5250performance.com/fabrication-services) - [Line Card](https://www.5250performance.com/5250-line-card) - [Haltech ECU](https://www.5250performance.com/haltech-ecu) - [Mil Spec Wiring](https://www.5250performance.com/mil-spec-wiring-for-high-performance-cars) - [Repair](https://www.5250performance.com/automotive-repair) - [Current Gallery](https://www.5250performance.com/performance-gallery) - [IAG Subaru Blocks](https://www.5250performance.com/iag-subaru-engine-blocks-colorado) - [Most Popular IAG Blocks](https://www.5250performance.com/our-popular-iag-blocks) - [Dyno](https://www.5250performance.com/dyno-tuning) - [Performance Blog](https://www.5250performance.com/blog) - [Contact Us](https://www.5250performance.com/contact-us) [![Need a Tune?](https://no-cache.hubspot.com/cta/default/532455/e98cee66-8412-4c1b-b0be-676df9108236.png)](https://cta-redirect.hubspot.com/cta/redirect/532455/e98cee66-8412-4c1b-b0be-676df9108236) # Tuners hang out here | 5250 Dyno Rental Tuners ![team_member.jpg](https://static.hsappstatic.net/content_shared_assets/static-1.3947/img/team_member.jpg) [\[fa icon="facebook-square"\]](https://www.facebook.com/5250performance) [\[fa icon="linkedin-square"\]](https://www.5250performance.com/Copy%20and%20paste%20your%20facebook%20URL%20here) [\[fa icon="twitter-square"\]](https://twitter.com/5250performance) ### James Hudson ##### Master Tuner Team member BIO Rating:  4.5 out of 5 stars \[fa icon="plus-square"\] Funk E Built | Subaru, Mitsu, EcoBoost On-Site and Remote Tuners:  We are Cobb approved to tune Subaru,Mitsubishi, and Ford Eco Boost. ![](https://www.5250performance.com/hs-fs/hubfs/Tuner_logos/FunkEBuilt.png?width=522&height=114&name=FunkEBuilt.png "FunkEBuilt.png") We tune open source as well for Mitsubishi and Subaru platforms. Other systems we can tune are Haltech, AEM, Autronic. We can tune Saab as well (we do have the flex fuel file and can perform the unlock SID function).  Open source for T-5 T-7 and T-8 systems.  We are willing to tune at 5250 Performance in Longmont, CO. We tune Rocky Mountain Auto Sports Rally Car ! There rally car just won Oregon Trail Rally in Rally America. Rock Mountain Auto sports is off to a great 2016 season. We are proud to tune their car and help them win races. We are Currently tying to get approved and trained on Volkswagen through Cobb. We can remote tune as well on selected platforms. Years of experience 3 plus years. Not only do we tune for performance but we tune for driveability as well. We are known for smooth performance tuning. Not the on/off switch performance tunes. I love tuning because after i tune a customers car and see the smile on there face afterwords is awesome ! ![team_member.jpg](https://static.hsappstatic.net/content_shared_assets/static-1.3947/img/team_member.jpg) [\[fa icon="facebook-square"\]](https://www.facebook.com/5250performance) [\[fa icon="linkedin-square"\]](https://www.5250performance.com/Copy%20and%20paste%20your%20facebook%20URL%20here) [\[fa icon="twitter-square"\]](https://twitter.com/5250performance) ### Dave Bigley ##### President Bio on how wonderful he is \[fa icon="plus-square"\] Cobb for BMW, Ford Ecoboost, Mazdaspeed 3 and 6, EVO X, and VW There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable. If you are going to use a passage of Lorem Ipsum, you need to be sure there isn't anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend to repeat predefined chunks as necessary, making this the first true generator on the Internet. ![team_member.jpg](https://static.hsappstatic.net/content_shared_assets/static-1.3947/img/team_member.jpg) [\[fa icon="facebook-square"\]](https://www.facebook.com/5250performance) [\[fa icon="linkedin-square"\]](https://www.5250performance.com/Copy%20and%20paste%20your%20facebook%20URL%20here) [\[fa icon="twitter-square"\]](https://twitter.com/5250performance) ### Harvey Epstein ##### President pompous arrogant and very expensive, and I'm worth it. \[fa icon="plus-square"\] The Boost Creep | Porsche and BMW AWD Cobb Porsche AWD and Cobb BMW AWD Only At This Location. ![](https://www.5250performance.com/hs-fs/hubfs/Tuner_logos/theboostcreep.png?width=1444&height=308&name=theboostcreep.png "theboostcreep.png") ![team_member.jpg](https://static.hsappstatic.net/content_shared_assets/static-1.3947/img/team_member.jpg) [\[fa icon="facebook-square"\]](https://www.facebook.com/5250performance) [\[fa icon="linkedin-square"\]](https://www.5250performance.com/Copy%20and%20paste%20your%20facebook%20URL%20here) [\[fa icon="twitter-square"\]](https://twitter.com/5250performance) ### Christian Muna ##### Owner \[fa icon="plus-square"\] Pure Drive Performance | Subaru, Evo On-Site tuning specializing in tuning Mitsubishi Evo VIII, IX and X as well as Subaru WRX and STI on the stock ECU. ![](https://www.5250performance.com/hs-fs/hubfs/Tuner_logos/PureDrive_Performance.png?width=510&height=136&name=PureDrive_Performance.png "PureDrive_Performance.png") Everything from 900+ whp fully built cars to stock set ups on pump, race and E85. I tune with start up, drive-ability and power in mind in that order. I've been EFI tuning for 11 years and tuning and installs for much longer. I started tuning air cooled VW's with carbs in 1989, but fell in love with fuel injection tuning shortly thereafter. I've tuned with several aftermarket ECM, but prefer Open Source tuning with the stock ECU. ![team_member.jpg](https://static.hsappstatic.net/content_shared_assets/static-1.3947/img/team_member.jpg) [\[fa icon="facebook-square"\]](https://www.facebook.com/5250performance) [\[fa icon="linkedin-square"\]](https://www.5250performance.com/Copy%20and%20paste%20your%20facebook%20URL%20here) [\[fa icon="twitter-square"\]](https://twitter.com/5250performance) ### Alan Jackson ##### Master Tuner Owner BIO \[fa icon="plus-square"\] Edge Autosport | Mazdaspeed, Focus ST, Subaru WRX/STI, MK6 GTI I tune for the following vehicles: Mazdaspeed, Focus ST, Subaru WRX/STI, MK6 GTI ![](https://www.5250performance.com/hs-fs/hubfs/Tuner_logos/Snip20161005_57.png?width=782&height=146&name=Snip20161005_57.png "Snip20161005_57.png")   ![team_member.jpg](https://static.hsappstatic.net/content_shared_assets/static-1.3947/img/team_member.jpg) [\[fa icon="facebook-square"\]](https://www.facebook.com/5250performance) [\[fa icon="linkedin-square"\]](https://www.5250performance.com/Copy%20and%20paste%20your%20facebook%20URL%20here) [\[fa icon="twitter-square"\]](https://twitter.com/5250performance) ### Shawn Bristow ##### President Use your About page to help your visitors learn more about you. We all know that people do business with people, not companies. So tell them a little bit more about yourself as a person. Include profiles of your management team. Upload images so that folks will recognize you at conferences and events. Hey. It's not exactly rocket science. But it works. \[fa icon="plus-square"\] Why is the sky blue and the grass green? There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable. If you are going to use a passage of Lorem Ipsum, you need to be sure there isn't anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend to repeat predefined chunks as necessary, making this the first true generator on the Internet. ## New Module Add content here. ![team_member.jpg](https://static.hsappstatic.net/content_shared_assets/static-1.3947/img/team_member.jpg) [\[fa icon="facebook-square"\]](https://www.facebook.com/5250performance) [\[fa icon="linkedin-square"\]](https://www.5250performance.com/Copy%20and%20paste%20your%20facebook%20URL%20here) [\[fa icon="twitter-square"\]](https://twitter.com/5250performance) ### Shawn Bristow ##### President Use your About page to help your visitors learn more about you. We all know that people do business with people, not companies. So tell them a little bit more about yourself as a person. Include profiles of your management team. Upload images so that folks will recognize you at conferences and events. Hey. It's not exactly rocket science. But it works. \[fa icon="plus-square"\] Why is the sky blue and the grass green? There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable. If you are going to use a passage of Lorem Ipsum, you need to be sure there isn't anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend to repeat predefined chunks as necessary, making this the first true generator on the Internet. ![team_member.jpg](https://static.hsappstatic.net/content_shared_assets/static-1.3947/img/team_member.jpg) [\[fa icon="facebook-square"\]](https://www.facebook.com/5250performance) [\[fa icon="linkedin-square"\]](https://www.5250performance.com/Copy%20and%20paste%20your%20facebook%20URL%20here) [\[fa icon="twitter-square"\]](https://twitter.com/5250performance) ### Shawn Bristow ##### President Use your About page to help your visitors learn more about you. We all know that people do business with people, not companies. So tell them a little bit more about yourself as a person. Include profiles of your management team. Upload images so that folks will recognize you at conferences and events. Hey. It's not exactly rocket science. But it works. \[fa icon="plus-square"\] Why is the sky blue and the grass green? There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable. If you are going to use a passage of Lorem Ipsum, you need to be sure there isn't anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend to repeat predefined chunks as necessary, making this the first true generator on the Internet. ## Dyno Rental in Colorado ### Located in Longmont, we offer tuners for your ride   > Building high performance cars is what we do here at 5250 Performance, we also rent out dyno time to ensure that the upgrades that you are adding to your vehicle do what they are intended to do. Mike Wiener 5250 Performance, LLC. \[fa icon="quote-right"\] ![Mike_and_Dog.gif](https://www.5250performance.com/hs-fs/hubfs/artwork_5250/Mike_and_Dog.gif?width=320&height=232&name=Mike_and_Dog.gif) ## Performance for your Vehicle starts here Blog subscribers get email updates daily, weekly, or monthly. Auto-magically. #### About Us We are a performance shop located in Longmont, Colorado.  Our specialty is forced induction performance cars.  We have experience in basic repairs to 1400 horsepower supercharged Hellcats.  Start something special. Learn More \[fa icon="long-arrow-right"\] [\[fa icon="facebook-square"\]](https://www.facebook.com/5250performance) \[fa icon="linkedin-square"\] [\[fa icon="twitter-square"\]](https://twitter.com/5250performance)  Copyright 2026 | Designed with \[fa icon="heart"\] by [Tru-Market](http://www.Tru-Market.com) \[fa icon="chevron-up"\]