Cancel

    Open app

    Search

    Equilibrium Tuning

    4.6 (88 reviews)
    Open 8:00 am - 5:00 pm

    Services - Equilibrium Tuning

    Check engine light

    Engine oil light diagnosis

    Auto general diagnosis

    18 More Services

    Auto noise diagnosis

    Tire Pressure Monitoring System diagnosis

    Auto no-start diagnosis

    Auto vibration diagnosis

    Auto diagnosis or inspection

    Auto pre-purchase inspection

    Auto maintenance

    Oil changes

    Auto repairs

    Auto battery or electrical system repair

    Auto brake repair

    Auto engine repair

    Auto exhaust repair

    Auto light repair

    Auto steering and suspension repair

    Auto transmission repair

    Routine automotive maintenance

    Transmission leak inspection

    Equilibrium Tuning Photos

    You might also consider

    Recommended Reviews - Equilibrium Tuning

    Your trust is our priority, so businesses can't pay to alter or remove their reviews. Learn more about reviews.
    Yelp app icon
    Browse more easily on the app
    Review Feed Illustration

    Reviews With Photos

    Dyno Results
    Mike P.

    Updated Review: Car has been running great still on flex fuel. Drove about 10k miles from 50K and no problems at all. Over 400awhp STI stock block and clutch no problems whatsoever. Ed's great at what he does and Patrick is a great help as well. Ed still replies to my emails and helps out with any questions or problems I have. Just be patient, I'm sure he has hundreds of emails on top of the amount of cars he needs to tune. EQ has one of the best services I've had from a tuner. They'll take care of you no problem.

    2006 forester xt.  Vf48, inntercooler, fuel pump and boost controller done by equilibrium
    Mark A.

    I don't regret coming here. First thing I have to say is customer service is on point. Patrick the service advisor is the man! I send him a email and he gets back to me ASAP. He also explains things so I know exactly what's going on. He keeps me up to date on anything that is going on with my car. The mechanic that worked on my car (I forget his name but he's the shorter guy) is a good dude. Helps me out and just like Patrick he lets me know what's going on. Just got a 2006 forester that I was having problems with and I was looking for a shop that does a lot of work on Subarus. Not just Subarus but working on modified vehicles. They were able to check out my vehicle and give me a honest diagnosis. With my work schedule I can only pick up my car at a certain time but they are always able to let me keep my car overnight. If they can't they will schedule me so they have space in the shop. I have my forester going in for sti conversion and Patrick was able to source the parts and set me up for a date to get them installed and have the car tuned. A check engine light just popped and I called him and he said he'll be able to take care of when I bring in the forester for the conversion. First day I came to EQ I was impressed by the sheer amount of Subarus and GTRs that they work on. It gives me confidence that they know what they are doing. I'd recommend this shop to anyone with a Subaru or modified vehicle because they know what's going on. Give Patrick a call and he'll definitely give you a honest answer and figure something out for you

    Michael B.

    For the past 2 months I had been kind of in a slump with my car. I'd had the car for 2 years, 2 E-Tunes from COBB, and one from FFTEC, stuck with top-tier parts and unapologetically paid for, what I thought was, equally exceptional workmanship. As far as the car had came, I couldnt help but having moments when the car just -felt- faster; made you laugh and scared you at the same time. The car just couldn't seem to replicate that anymore, even under what was considered perfect conditions; TOYOS, E85, rolling launch. It just wasnt happening. Few guys at car meets mentioned Ed, but I wasn't convinced that it was the tune. 6 months goes by, and a good friend of mine gets his 2010 back from EQ and he was incredibly happy...and he was on 91. After my Nissan dealership, had good things to say about Ed...I had to give it a shot. Having thrown the car on the dyno before, things were already different here; he tried to make sense of what my concerns were, what my goals were, and wanted to make sure keep in mind when he was tuning it. 2 days later, the car absolutely rips on E85. The car is incredibly energetic under load, and even more so around town. It's very clear the car is making full use of all the supporting mods, and easily pushing the tires to their limits. Not sure how these other shops could have missed the mark, but I couldn't be happier with how this turned out. Only regret is not coming here from the beginning...

    Thanks to Ed, Patrick, and Tom for a terrific job installing this Jackson Racing supercharger on my FRS.
    Alejandro F.

    EQTuning all the way. I drove 2 hours from San Jose to get a supercharger installed on my Scion FRS, and their reputation, experience, and service made me a happy customer. I met Patrick at the GT86 Summer Kickoff meet in Livermore, CA and already knew that I wanted to go forced induction. We spent a while on email talking about several kits, and I finally decided on the Jackson Racing supercharger (CARB legal), oil cooler, and Koyo radiator. I then sent them a check for parts, and a couple of weeks later the SC came in. They did a pretty good job of keeping me in the loop, and I was anxiously waiting to schedule an installation. I showed up on their door on Monday at 9 am, they offered to give me a ride to my rental car, and I showed up on Tuesday at 4 pm to pick it up. Tom, the tech, seemed very attentive to detail and gave me a run down of the new parts. Now comes the good part; if you drive a GT86, you know it is in desperate need of more power, it's missing that oomph in the mid-rpm range that makes it seem like a scrawny teenager instead of a drifting Bruce Lee doing round-house kicks on every corner and then accelerating away giving you a smirk in the process. Why did I choose Jackson Racing? Frankly, I wanted a reliable company and a CARB legal kit so I wouldn't have to worry about inspection. Why EQTuning in Fairfield? These guys are pros, and after spending so much money on it, I have the peace of mind that they did an excellent job, and if I need to come back for a tune, they'll take care of me. Ed, the shop owner, races his own GT86, and their shop is filled with GTRs, WRXs, and the sort, so they know their customers. If you have any questions, feel free to PM me. Happy boosting, Alejandro

    See all

    10 years ago

    Business owner information

    Photo of Ed S.

    Ed S.

    Helpful 3
    Thanks 0
    Love this 0
    Oh no 0

    14 years ago

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0

    12 years ago

    Helpful 2
    Thanks 0
    Love this 0
    Oh no 0

    14 years ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    12 years ago

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0

    10 years ago

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0

    12 years ago

    Business owner information

    Photo of Ed S.

    Ed S.

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0
    Photo of Phil H.
    0
    78
    45

    10 years ago

    Business owner information

    Photo of Ed S.

    Ed S.

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0

    Page 3 of 3

    Ask the Community - Equilibrium Tuning

    Do you guys do pre purchase inspections at all?

    No, unfortunately we don't. Sorry about that.

    Are you guys just a tuning shop or also have a machine shop Because I'm looking to Rebuild a Honda H22A4 motor?

    Good afternoon. Unfortunately we don't do engine builds or machine work on Honda engines here. I… Read more

    Can u dyno tune my 06 charger rt just installed stage 2 cam and really need tune to get max power from car?

    Hi Casey, This is something we can do. Please give us a call or shoot us an email for pricing and… Read more

    Do you work on 93-98 Supra 2JZTE motors?

    Hey Richard, What work specifically are you needing? We can do general maintenance and most aftermarket installations.

    Wondering if youTune 2012 Hyundai Genesis5.0 R-Spec?

    Hi there. Unfortunately we cannot tune your Hyundai. We do not have any software available to us.… Read more

    I have a 2009 AWD Lincoln MKS that I'm researching and would like to turbocharge. Would this be a good place to have do the work if I provide a kit?

    Hi. Sorry but we don’t have any experience with this platform.

    View All 12 Questions

    Review Highlights - Equilibrium Tuning

    The tune that Ed input into my car was beyond good, my mpg went up by 4 mpg and my powerband is definitely smooth/faster.

    Mentioned in 55 reviews

    Read more highlights

    You might also consider

    Verify this business for free

    People searched for Auto Repair 8,914 times last month within 15 miles of this business.

    Verify this business

    Good Guys Auto Care & Tires - New epoxy flooring

    Good Guys Auto Care & Tires

    (307 reviews)

    This will forever be my go to for all repairs and tires. Most important to me, they are honest. If…read moreyou know you know, being a woman taking your car in to the shop, they find 5 things supposedly wrong but don't actually fix the overall issue you came in for, wasting hundreds and thousands of dollars. You will not have this happen to you here. My first visit I brought my car in because my brakes were making a squeaking noise and i thought I needed new brakes. They absolutely could have done that and charged me a ton of money but they didn't, my brake pads were fine. My daughter now has her first car and I have had to send her in for a few things and they have been nothing but wonderful. Explaining things to her, calling and speaking to me when she's not understanding, it is unlike any experience I have ever had taken in my car for repairs. I know trusting a new shop can be scary, but if you are looking for a good place to take care of your car, I have to suggest Good Guys 100%

    Had a flat tire and came here hoping they could help--and they absolutely delivered. Even though…read morethe shop initially received the wrong tires for my car, they handled the situation perfectly. What really stood out was the communication. They kept me updated the whole time, explained what happened clearly, and made sure everything got resolved without wasting my time. The team was professional, efficient, and genuinely helpful throughout the process. Situations like that can easily turn into a frustrating experience, but they handled it smoothly and made sure I was taken care of. Great service, honest communication, and a team that clearly cares about doing things right. Would definitely recommend and come back if I ever need tire service again.

    Grizzly Auto Body - Before

    Grizzly Auto Body

    (34 reviews)

    My sons truck was hit by another vehicle on the passenger side. We decided to take it to Grizzly…read moreAuto Body. Ariel was very professional and pleasant. He explained how long the repair would take and we went from there. Upon picking up the vehicle. They also fixed our back bumper. Repaired a small dent on the right front passenger side. Detailed the inside and out. The truck looks fantastic and we couldn't be more pleased. Ariel and his crew really went above and beyond. I would highly recommend Grizzly Auto Body without hesitation. Thank you again.

    Grizzley Auto Body did an incredible job repairing paint damage on my BMW. From the moment we…read morebrought the car in, their team was professional, friendly, and extremely knowledgeable. They took the time to explain the repair process, kept us updated throughout the job, and made the entire experience smooth and stress-free. The quality of their work is truly outstanding. The paint repair is flawless and the car looks like new again, you would never know there had been any damage. Their attention to detail and pride in their craftsmanship really shows. Communication was excellent from start to finish, which is something that can be hard to find. The entire staff is welcoming, helpful, and clearly cares about their customers and the work they produce. Grizzley Auto Body has officially become our go-to body shop. If you want honest service, amazing results, and a team that stands behind their work, this is the place to go. You will not be disappointed!

    Equilibrium Tuning - autorepair - Updated June 2026

    Loading...
    Loading...
    Loading...