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    Duttweiler Performance

    5.0 (2 reviews)
    Closed • 8:00 am - 5:00 pm

    Services - Duttweiler Performance

    Routine automotive maintenance

    Auto electronics installation

    Duttweiler Performance Photos

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    Recommended Reviews - Duttweiler Performance

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    1 month ago

    The Best in the World. Kenny knows his stuff about engines. I would recommend for all of your high horsepower requirements

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    1 year ago

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    Diamond Auto Salon - Diamond Auto Salon

    Diamond Auto Salon

    (392 reviews)

    I seriously cannot say enough great things about Diamond Auto Salon. From the moment I called, they…read moremade me feel like my car and my vision genuinely mattered. I had been shopping around trying to decide who I could trust to wrap my Tesla, but one phone call with Cooper was all it took. The guy knew EVERYTHING. When I came in, he welcomed me, sat down with me, walked me through the different colors, and showed me real-world examples of cars they had wrapped in the finishes I was considering. He even showed me vehicles they were currently working on so I could see firsthand the level of care and attention to detail this team puts into every car. I originally thought I would just choose between a matte or clear wrap. Instead, Cooper took the time to understand the entire look I wanted and helped me build my dream car: dark grey PurePPF, a smoked-out light bar, blacked-out side taillights, and tinted windows. He made thoughtful suggestions at every step without ever making me feel pressured. He also gave me complete confidence in the PurePPF brand and in the incredibly high standards Diamond Auto Salon holds itself to. Cooper is an absolute legend. He guided me through the entire process, kept me updated along the way, and truly knows how to treat customers right. This man deserves a raise! The professionalism, knowledge, craftsmanship, and personal attention from Cooper and the entire team were fantastic. If you care about your car and want to work with people who care just as much, this is the place. I couldn't be happier with the experience or the dream look they helped me create!

    Love Diamond Auto Salon, they did a great PPF wrap of my Taycan plus follow up work. Will be a…read morerepeat customer. Dan L.

    McMillan's Speed & Fabrication - 2017 Chevy SS

    McMillan's Speed & Fabrication

    (6 reviews)

    Do NOT take your car here. This guy did a number on my car and happily took my money and didn't…read morewant to fix anything he did. I had a 1967 Chevelle completely done here and it wasn't until I actually took the car and started driving it that I noticed all the issues! From the vintage air being damaged and not hooked up correctly. The disc brakes put in going the wrong direction. The suspension install with no safety locks. . Mismatch brake lines from the braided lines they must have lost. Just so much to label! I'm still paying for everything he messed up. They damaged a Rim. I purchased an LS3 with a computer. They bought me a computer from a performance shop that ended up being faulty. I didn't even know they had purchased another one until my dyno guy sent me a picture. I ended up having to buy the same exact one I purchased in the beginning total of 3!! Since they never installed the first one. I texted him asking him wth and he blocked me. My dyno guy told me the computer they install was cutting all the O2 sensors. He charges you for everything! He is over priced and makes up all kindahours on builds to make $$$. Just not worth the car not being complete and having to deal with the aftermath of expensive half ass work. Don't waste your money here. UPDATE!!! Again I posted my evidence. I've never taken it anywhere else other than your shop. Yes it had been a year as everyone knows building a car from scratch takes time. Especially when you have no interior in the car it makes it very hard to drive it. A lot of upholstery shops are backed up and that caused a delay in the break in. No one has touched the car other than you. And I posted a receipt of when you looked at the car after I complained. The draw that you mentioned was from a part you purchased. I think a better name for your shop should be "McMillan's speed and fabrication of lies" All my evidence is here if ever you would like a copy? Along with the text messages we exchanged and emails.

    I researched quite a bit for my upgrade "build" for my bread new 2017 Chevy SS. The Chevy SS is not…read morea well known car and is considered a limited production performance and may I say luxurious sedan. Equipped with a LS3 V-8 415hp and the magnetic suspension borrowed from Cadillac. It's both fast and handles extremely well. Needless to say I was not going to leave her with just anybody. 2017 ended the production of the Chevy's 3 year run. I wanted to personalize her and up the power to about 600 hp. This would require a complete engine swap or some type of induction. I choose induction with a Magnuson supercharger. I called Magnuson and after my interview of there product and service I ask who is the best shop for an installation of your supercharger. Without hesitation the Magnuson technician said, "Mcmillan's Speed and Fabrication," there just a few miles from our facility in Oxnard. He went on to give me a brief resume on Kevin Mcmillan the owner of the shop. He has been in the auto industry over 20 years and spent 12 years in the R&D department of Magnuson. WOW! Nice I need to meet him. I live in Northern California and Oxnard is in Southern California so about a 6 hour drive. Upon arrival I found a shop parking lot that looked like a hot rod car show. The working car bays were clean and organized. I met Kevin and he gave me a tour of the facility. I was impressed. He was knowledgeable friendly honest and seemed to be an all around nice guy. That's all it took for me. We discussed what I wanted and he came back with what I considered a good fair estimate. I signed up. Left a deposit for the supercharger and scheduled a date to start. During the build I was updated with photos of the progress. Nothing to hid, quality professional work. No up charges he delivered on agreed estimate. Now I own my dream car that's reliable and personalized. Thanks to Kevin and his team at Speed and Fab!!

    JCG Restoration and Customs - JCG owner, Cris Gonzalez on track, at speed at Las Vegas Motor Speedway for the OPTIMA Ultimate Street Car Invitational

    JCG Restoration and Customs

    (4 reviews)

    I realize JCG is relatively-new to the area, but the quality of their work has been well-known to…read moreme for a long time. It was fortuitous that my truck broke down just an hour from their new location (and 1,000+ miles from my home). They dropped what they were doing, sent a mechanic to my truck to replace a water pump and then once I was able to drive it to their shop, quickly & correctly got my truck fixed and back on the road. Fast, courteous, professional and very reasonably-priced for the level of service provided. If you are considering them to build a custom or pro-touring car, know that there are thousands of shops that could cobble together parts and get your car on the road. However, the number of shops that can build a world-class Pro-Touring car that can perform on a racetrack without issue and be comfortably driven on public roads afterwards shrinks dramatically. OPTIMA's Search for the Ultimate Street Car Series, which airs on MAVTV, features the best all-around street cars & trucks in the country and you can't do well in that series if your builder cuts corners or doesn't know how to build a car for track/autocross use. JCG knows what it takes and has built multiple cars that can perform with the best in the country.

    Took my car here based on a recommendation from a friend. I am so pleased with the outcome on my…read moreChevelle. Cris is such an amazing guy. He was able to address every major concern I had on my bucket list. Cris is very meticulous and does not cut corners. His prices may not be cheap but you get what you pay for. His work is only top notch! I will not take my car anywhere else. Thanks again Cris for showing me the light. Lol

    Go Big Truck Performance - 2019 Tacoma - Icon coilovers, upper control arms, leafs - Falken AT4 - cab mount chop

    Go Big Truck Performance

    (57 reviews)

    Experienced, knowledgeable staff, great service, fair price, clean shop ... drove nearly an hour…read moreeach way & was well worth it. They're on my Go To list for suspension issues. (Front wheel rubbing on a 3rd gen Taco, Kings, total chaos, KO3)

    I have a 2019 Tacoma Off Road and Carlos D. over at Go Big helped me solve suspension and tire…read morerubbing problems I started to have and was offering solutions that suits my set up and driving needs. I worked with Carlos throughout this whole process and I'm glad I did because he knows his stuff and the details when it comes to suspension systems. His customer service work ethics are 10/10. I needed a rebuild of Icon 2.5 coilovers and some new all terrain tires. After the rebuild, the shock itself started leaking and Carlos told me to bring it back asap so they can fix it at no charge and make it right. At that time I decided I needed some new tires and they set me up with the new Falken AT4s. After the installation of new tires, alignment, and rebuilt shocks, i started having tire rubbing issues from the increased tire size. Carlos offered a re-alignment to increase the caster even more from what it was originally set at to try and minimize the rubbing at no charge. The alignment was done and the rubbing came back when driving on certain roads so Carlos said to come back again. At this time, he offered to realign again at no charge, but also recommended a cab mount chop to alleviate the problem for my suspension system and tire size specifications. I decided to take his recommendation and went with the chop. I'm glad I decided to go with the chop because it made the most sense and they did a great job with the welds and paint job. I appreciate Go Big's work and shout out to Carlos for his dedication to making the job done right and offering solutions when things don't always go as planned. The solutions Carlos offered were cost efficient but also the right solutions for my driving style and set up. 10/10 customer service and 100% I'm a returning customer. Thanks Go Big!

    Duttweiler Performance - autorepair - Updated September 2026

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