Grc Performance

Apparently you can get sued by giving a bad review, from personal experience, about a business; this is what’s potentially going to happen with me.
I originally gave GRC a 5 Star Review with much praise, but then I updated the review a year later with a 2 Star Review.
I received a call from a paralegal, Charlie at R&K Law Group who is representing GRC Performance, he stated that if I do not delete my review I will get sued and they will take me to court.
So, I took it down.

Did somebody say ATTITUDE! cause that’s what these guys have…
unprofessional hacks and overpriced to boot
Go ahead & take a chance if you dare but you’ve been forewarned

Brought my 2006 mustang in for a kenne bell install. Put 70,000 miles on that car without a hiccup until a drunk driver hit me. Ins co paid me and now I have a 2014 5.0 that Umberto will be upgrading and servicing.
I’ve been coming to GRC for 10+ years and they have been honest and trustworthy. I will continue to bring my car here.

This is the shop Tuttle Click Ford sent me to when my Shelby was too much for their mechanic to deal with. It is a ‘little’ modified — 2006 GT500.
Umberto has fixed ALL my issues — fixed my headers, cold air & tuned it correctly.
His prices are fair & his work is outstanding. He even washed my engine.
If you have a Mustang — this is THE place.

God bless Umberto and GRC! I have a 2008 Mustang Bullitt, equipped with an aftermarket Saleen supercharger, which is my babied daily driver. «Maggie» is one-​of-​a-​kind. I don’t ever want to part with her, so I keep her maintained. At 50,000 miles, I took her into my local Ford Dealership to have the supercharger oil changed, as recommended. They took the better part of a week, and when the car was finally returned, the gas mileage dropped dramatically. They had clearly screwed up something, but it ran OK so I lived with it.
At 60,000 miles, I had the car fully serviced at the dealership, to the tune of $ 800. Shortly after that, the «check engine» light came on. I took it back to the dealership. They charged me for an evaluation. It sounded like a blown gasket to me, but they insisted that the supercharger manifold (a $ 1,500 part, if you can find it, as Saleen is no longer in the Mustang business) needed to be replaced. They ordered the manifold and related parts (coming to over $ 1,700, which they wanted up front) and I waited. And waited. Six days later, I was advised that the part was in and they were working on it. Five days after that, they advised that they had ordered the wrong part. I had been without the car all this time, and my wife was having a fit at having to share her car.
I checked with another dealership that I knew had at one time worked with Roush supercharged Mustangs, and they candidly admitted that they did not have anyone in their shop who was qualified to work on my car. They recommended GRC.
I spoke with Umberto, and told him that the car may be sitting at the dealership in pieces, but they clearly did not know what they were doing and I might need to bring it to GRC. He said they could collect the pieces and pick it up.
When I next checked with the dealer, I was actually relieved to learn that they still had not touched the car. I had my wife the lawyer (A/​K/​A the «Velvet Hammer») pick it up, get a refund, and take it to GRC. After dealing with the dealership, she was impressed with how knowledgeable Umberto was. She thought he was «really smart.»
Umberto immediately identified the problem (gaskets), treated her with respect, gave a fair estimate, and told her that they would begin work immediately. Fearing the dealer had previously done damage, I asked Umberto to also look for any other problems. He found a wire that had been severed, a rubber hose with an aneurism, discovered that the intercooler was not functioning, and that the new spark plugs had been improperly gapped for a supercharged engine when the car had been serviced at the dealership.
Then he fixed it all. While it was in, I also had him check the brakes, which had been undulating for a while. I suspected warped rotors. He confirmed that the front two were warped. I had him replace all the rotors and the brake pads (even though he forthrightly confirmed that there was still life in the ones I had – my call to get them replaced early while he had the brakes disassembled). I also had him check the shocks, suggesting they might need to be replaced. He said they were fine, and counseled against their replacement.
It was all done overnight, and even with the full brake job it cost below the price the dealership was going to charge for a part I did not need. My car now runs like a top and stops like a cheetah. I am one happy customer. My Bullitt will never again be serviced by anyone but Umberto and GRC.

Took my car in for maintenance and got awesome service I highly recommend getting your work done here

GRC Performance is great. Umberto and Silvia make a great team. They really know a lot about Mustangs old and new. I was very happy with all the work I had done for my 2012 Mustang at GRC. I highly recommend this shop. I will get all future work done here. Also the prices are the best in town.

GRC Performance has built my 1988 5.0, my 1998 4.6 Mustangs, my 2006 SRT8 Charger and we are making 500RWHP and 515RWTRQ its amazing and car drives like a dream, Thanks Umberto and Neil. great place for Horsepower.

I took my car for a routine check and was given an honest answer and a great deal on routine maintenance. Thanks for the work I will be going to GRC from now on.

Umberto is a great guy, stays true to his quotes and does impeccable work. I’ve been to a number of mechanics for my classic mustang and he is the first one that I have returned to. And I have returned multiple times.
He takes the time to listen to which restoration projects I want to do next and helps me find the best parts for good prices. He has competitive rates for the level of quality work that he does and only shop I plan to take my car in the future.
In reference to the poor review on not getting an estimate, I’ve never had a problem. I told him what I wanted done, I went to his shop and he lifted my car, gave me a free estimate and emailed me a copy. When I got the work done, he was spot on the estimate down to the penny, literally.

Why would one have to set an appointment for a dyno appointment and then be asked to remind them days prior to going? Okay no problem I’ll stay on top of that, but then to show up right at their opening hours which is 10am and the owner and employees stroll in at 1030 to begin moving cars…
Once they finally pull my car in (mind you when I set up the appointment I had advised the tuner the modifications on my car and what we needed) they decide to tell me that they need my car for 10 days to get the tune right and that it is more to tune than they had expected.
Don’t show up to your own business late and then tell me you have too much other shit to do that was scheduled when I have had my appointment for nearly a week and had to remind you about my own appointment. Never recommended this place to anyone and surely will not considering how rude and inconsiderate they were.

They must be very busy because they have no time to answer inquiries for a cost estimate for work and making an appointment. So I will be taking the stang elsewhere the has at least some type of customer service

They did a good job on my husbands car. He was happy as for my, I just didn’t care for the way the owner talked to me like I didn’t know what I was talking about when I took the car in. but other than that we are going to bring our other cars here, i just won’t be the one dropping them off

It’s been a very long time since iv been ripped off, but I have NEVER been ripped off as bad as these guys did me. I bought a car and it was having some engine problems. They told me it was «X» problem so I had them fix it. A week later the car started acting up again, took it back and they told me it was now «X2» problem so I had them fix it. This happened 2 more times with «X3» and «X4» problems.
After over $ 2000 in repairs, I decided to go to one of those chain places, that ironically, I wanted to avoid due to the high rip off rate. They checked the car and said it was the original «X» problem that was NEVER done by GRC!!! They even gave me a deal on the job and BOOM! The car runs perfect. They told me the other problems were caused by the original problem and should not have been «fixed».
Do yourself a favor and go ANYWHERE ELSE but here. I know its enticing to go to a «specialty» shop but do your research and DONT GO HERE!!! for American muscle there is a shop in Aliso Viejo that is honest and will NOT rip you off, its called EXTREME mustangs…