Highly recommend. Friendly knowledgeable staff. Best the car has ever ran!

By far one of the best places to have your car tuned - 15/10

Had a great time tuning my C6Z. Josh definitely knows his stuff and got it running smooth with great throttle response and power - exactly what I wanted.

Excellent shop great service, great skills, 100% recommended

Best Dyno tune around. Josh is the LS guru!

Best tuner for mustangs in the new england are hands down pete is the man🤙

Josh is the LS God. Such an amazing experience with him. Great guy and extremely smart. I highly recommend him.

As a business owner I understand how important it is to take care of people. As my first computerized build, my car had me pulling my hair out. Not everyone drives supercars.... But when you spend thousands of dollars in upgrades, your corner garage wont do. I went through a series of attempts that left me overwhelmed and unsatisfied. I had some awesome local help, and a suggestion that led me to Josh. He overcame some mechanical issues .... Identified tuning problems, and pulled 30 horse out of an already tuned car. 5 stars isnt enough. But more than stars, its about trust. Whether your ride is worth 5k or 150k, this is the place. Thanks Josh. You guys rock.

Had major issues with the tune the last garage did so I brought it to Josh, cars runs and drives like stock...made a life time customer in 3 hrs👏

Great service, Pete was awesome to work with!

It is Fantastic he knew his stuff. If you have a Mustang you need to get a dyno. You must must go THERE !!

One of the best tuners, very informative,Extremely intelligent,Listens to your needs or wants, and tunes, getting the most horsepower/torque in the safest, most reliable way.Definitely recommended.

Honest, quick, reasonable rates. Corvette rips now. Thanks alot.

Would reccomend!! Super friendly service. Pete johnson helped me fix some errors with my car and tuned it to perfection. All for a great price. Very knowledgeable.

Josh did a great job tuning my 2008 Pontiac g8 gt. Very impressed and Highly recommended. Ill be back with other vehicles

Brought my 2017 Dodge charger R/T in to have a performance computer installed and tuned. The difference between stock and tuned was amazing. 93 tune added 80 extra H/P, shift point adjustment made the charger a beast. A MUST FOR YOUR DRIVE.

Pete and Josh are fantastic! Pete has done my 03 Cobra and my 13 Shelby GT500. Both are extremely professional and very knowledgeable. If you need a tune, no place better.

Went with a friend to get his C7 retuned. Car never ran correctly from the start from the other place we brought it. Josh was awesome car drives better than ever. Makes 130 more whp. Can say enough good things about them

Pete has always done a fantastic job on my 03 Cobra, very smart and knowledgeable when issues arise.

Simply the best place to go. Been a customer for the past 9 years since I got my 04 Cobra. Pete has always taken care of me, and has the safest, most reliable, and strongest tunes you will find on the street. Dont trust anyone else with your investment, there is no substitute for Petes work!

Pete was extremely helpful and knowledgeable about my truck and definitely went the extra mile when I ran into a few problems with my truck (01 Lightning). I had to drive an hour and a half to him but we’ll worth it. Thanks Pete

Pete and Josh were great! Pete was able to tune up my 1992 Mustang GT 5.0. Very Happy with the results! Thanks a ton Pete!

Pete did a great job tuning up my Mustang, his experience shows!

By far the best place to go for horsepower and torque graphs you can take home, car tuning and chips. Reasonably priced compared to similar places, and the people here are very experienced professionals that know exactly how to get the most out of your car. Many people come here after some other place messed up their car, but you wont have that problem here. I would rate them 10 stars if I could.

Great service. Awesome guys.

Performance Dyno was recommended to me by a few of my close friends who are car enthusiasts. Pete and Josh have done an outstanding job tuning my 2005 Mustang GT! Where other shops had issues, Pete and Josh were able to tune the car to get it to its peak performance. Their commitment to excellence and fair prices in an industry that often tries to nickel and dime the customer is the reason why I drive over 2.5 hours to get my car tuning done.

Ive known of Performance Dyno for years and have been bringing Pete Johnson (owner) many of my modified Mustangs for tuning purposes for years. Pete is a very knowledgeable tuner and a great guy to deal with. He will bend over backwards for his customers and is a great tuner. I have in the past and continue to recommend him whenever I hear of people needing tunes with their vehicles and looking for a great shop!

Josh and Pete were great. Josh tuned my car met all of my goals. I would go back any time. Great service and didnt mind all of my questions.

Josh is the man. Knows exactly what he is doing, super personable, and does his best to work with you if you have any issues. I will not go anywhere else

Amazing place super friendly and knowledgeable best bang for your but and your ride

Outstanding tuning! So happy we came here, 1987 Mustang GT 5.0 Supercharger runs like a dream now!!! I

Josh went out of his way to make time to fit my car in. He had to make time for me twice because of a problem with my build. My car could use some touch up idle tuning but overall Im happy with my experience

Super helpful, friendly and informative. Josh does an amazing job!

Pete Johnson is extremely knowledgeable. I am very happy I brought my 2012 SMS Mustang to Performance Dyno.

Josh is the best cant say enough good things he will find your hp thts for sure

2005 GTO, 228 comp cam, SLP long tube headers, k&n cold airAwesome job today. It can be tough to schedule an appointment, but Josh eventually got back to me. It was worth the wait. They know what they are doing and do it very well. Josh will talk to you and let you know the changes he makes and the reasons while hes tuning. Car runs like a beauty.

Five stars is not enough.Pete helped me out with a flagged vin on emissions in Mass.I just bought the car and he identified several other problems with my supercharger,CAI intake,and 02 sensor.I was warned that some tuner shops aresnake oil salesmen.Pete is the real deal.I highly recommend him

Pete is a great guy and very knowledgeable tuner. Glad I made the drive. Will not go anywhere else with my car.

Amazing result on dyno, thank you very much Pete. Need dyno on your Mustang, stop searching, that is the place to go!!

2009 z06 corvette heads big cam intake exhaust had it tuned in Delaware at a well known shop got car back driveability was horrible and down on power brought to performance dyno Josh had to start from scratch, gained tons of power and best was the drivability Josh worked on it till it was to my liking great tuner and price was very good thanks again Josh excellent tuning skills

Just simply the best.

Had my mustang tuned by Pete totally different car hes a perfecnal at what he does and I totally trust him with my car 100% best around and Im going to bring my new build I just did a intercooler on a v3 Vortech cant wait for the new tune ..... Call u soon Pete for a app

This place is the best, and Josh is a great tuner.

Pete helped me get my tuned straightened out on my Whippled 05 Mustang GT that was having trouble for years! I had taken it to a different tuner up in NH before but paid almost twice the price for no results! Cant say how happy I am with the results from Pete and the price to boot!

A+ these guys know what they are doing

Big difference in my 2005 GT . Thanks Pete !

Excellent results with my C6, Id recommend Performance Dyno to anyone.

Pete is the dyno guru. he took my car to the next level in no time. he found all the little things that were wrong quickly and made them all right. you want it done right? then go see pete! thanks buddy the car runs awesome!!!shawn sangasalem nh1992 mustang 524 rwhp (for now)

Pete dose amazing things on the dyno. Will defently go to him from now on with any car of mine!

Great guys that are very knowledgeable.

I’ve called 3 days in a row and left voice mails no call back not a way to do business !

Good

Cool place

Great

It is an excellent place for all very good.