The only person I trust with performance modifications on the genesis. Ive been running his custom tune for over 6 years with zero issues. Great pricing for retunes when more modifications were made. The tune makes the car perform so much better and is much more enjoyable to drive. Theyre also able to order any parts you need and even do their own fabrication when needed (super clean custom work!). Ive gotten work done elsewhere that needed to be corrected by Jay. His knowledge of the genesis is unmatched and Ill always take the 90 mile drive down when I need any work.

Jay is a kind and honest mechanic. There are none in Virginia that compare to his level of working knowledge on the Genesis Coupe.Anyone who touched my car in VA messed it up in some way. Jay did a lot of work to my car, and I drove it home, 6 hours straight, zero issues.Continuing to enjoy my car and the confidence that my work was done with care and respect. So thank you SFR, and to anyone looking, I highly recommend this business.

Engine blew 2 months after tune received no help, or concern regarding double checking the tune made several attempts to reach out and was purposely ignored. Customer is the worst. Genesis community majorly votes Alphaspeed and now I see why.

Always a great experience coming here for a custom tune. They also installed my big turbo setup and meth kit flawlessly. Will be returning for sure

Went with a friend to have his Genesis tuned by Jay and we drove out from Detroit through the night 9 hours and he made sure to be there for us on the weekend to make the long trip worth it. Work was done quick and effectively. Tune was great car felt awesome. And felt that we also made a great friend that enjoys his work, has passion for what he does and cars in general definitely deserves some spotlight attention. Would recommend to more friends. Thanks !

Jay is the man. Drove 6 hours to have him tune my 2013 Genesis Coupe. He walked me through the process and kept me informed on the changes he was making after each pull. This guy knows his stuff! I was able to get an increase of about 60hp/30tq over his stage 1.5 canned tune that I had previously. He was also able to dial in the water methanol kit that I had installed as well. Ill be back when its time for a bigger turbo!

Great communication and products. Hopefully Ill have a chance to visit the shop some day.

Cant ever get ahold of them, Ive called numerous times and it rings twice and then voice-mail

Super fast turnaround. Sent my ECU and TCU out on a Monday. They got it Tuesday and shipped it back on Wednesday. all I can say is that this is how Hyundai should have programmed the Genesis coupe from the factory. Car is super responsive, drives way better under all conditions- normal, spirited, and track. The transmission isnt searching constantly for the right gear anymore. I cant say enough about this. I was hesitant for months before finally doing it. I wish I would have did this sooner its that much of a difference. It did take a few days for the ECU to adjust and for me to see a difference. Just give it 3 or 4 days after you get it back and you will be happy.

They are great at taking your money and making decent tunes. They are not good at customer service. I recommend AlphaSpeed if youre looking for both.

If you own a genesis or Kia that you want to tune go here. Jay made sure to give me all information up front with no going around the Bush. He made me feel welcomed into his shop along with showing me his upcoming projects that he has going on (They look very promising). Very friendly environment as well as professional. I just got my 1.5 tune for my Genesis and I absolutely love it. Thank you Jay for the all the hospitality you provided for me and my car. Keep up the good work man.

Have used these guys for 3 tunes on the Genesis platform now. The best in the business.

Be careful with these clowns. Prepaid for my tune no one knew that I was coming. Do yourself a favor and go somewhere else. These guys are a joke!! Tuned my car and now I get a Read only Memory failure code.

Awesome business. Jay is personable and professional. Tuned my BK2 3.8 and the difference is night and day. Way more throttle response, even in high gears, and a lot more top end. Worth every penny.

Seoulfulracing has done a perfect job of every process of my build! It started as a simple bolt-on flash tune (1.5). Now that I have a larger turbo, multiple upgrades, and a dyno tune. Jay stands behind all of his services! He is a GREAT resource to have for information and service! I will never doubt his knowledge. I will gladly be back for additional upgrades! Do not hesitate to contact him! Seoulfulracing is nothing short of perfection! Thank you for everything!

Down to earth. My car was having some issues and the owner was very helpful and knowledgeable. Over all great experience

Got another tune from SFR (my 3rd car tuned through them) and once again great service and work the throttle response is great and the shifting is way better. Definitely recommend!

Jay is the go to for parts and services! If youre in the DMV the trip to PA is well worth it.

SFR is 6 out of 5 stars! I had my BK1 Gen Coupe tuned today and is awesome! I had a 20+ questions and he took the time to answer them all. He has a passion for what he does, and as a small business owner with superb customer service I will always recommend them. THANKS JAY! #liveSEOUFUL

Jay was very pleasant to work with, laid back and passionate about what he does!

Friendly guys and they knew what they were doing