Great performance shop for all your upgrade / tuning needs! I live in Austin and drive a 21 Challenger, I took it in for a tune after having a few minor bolt ons added. Aida was very helpful and very easy to communicate with throughout the process. I will be returning very soon for more upgrades.

Team is awesome. They do great work here. Need a tune. Call these guys first!!Dyno? Rent a bay? Cant go wrong with these guys

Great husband and wife duo with fair pricing, good customer service, and quality work. Come here if you want a job done right.

They have reasonable pricing for tuning and great customer service! Look forward to using them in the future for some other upgrades/repairs.

Had these guys install an air lift system on my car. Everything works and performs flawlessly. All the employees were extremely polite, professional and definitely knew what they were doing! On top of that the price to get it installed beat every shop in the area. I highly reccomend checking with this shop before going anywhere else and wasting time and money! I will be back in the future to do some of the bigger jobs on my car! Huge thank you to everyone at there at High PSI!

Went to High PSI to get my 2012 Dodge Challenger SRT8 tuned after a rebuild and several upgrades. On time very professional and very helpful. Took my car and found some issues and corrected them. Tuned her up and very happy. Will have to take care of another issue I have and see how she does. Would recommend to anyone wanting their Mopar tuned.

I took my car to them and my first time was good. But my second time i added a lot more to my car and found they are only good with beginning stages of performance. When i added a lot more to my now race car all the new and upgraded parts they only did a few of them. When it comes to advanced high performance they dont know how.

Great people

Jonathan was awesome. Knowledgeable and very professional, unlike a lot of other places in town. Great experience!

Scheduled my car to come in and get a tune and it came back perfect and running in way better shape than before! Would definitely recommend to anyone looking to get good work and customer service for good prices as well. Will definitely be coming back for future work to be done.

I order a harness for my ls3, 6L80E trans with 4 pin alternator. So I get 80 % installed and notice they sent a 2 pin. I asked them to send me a 4 pin connector and the wires to go back to pcm. They said we can send connectors but I would have to cut the wrong 2 pin connector and splice wires to the 4 pin connector then I would have to run a hot lead for continues power. Then after that I said send me what I ordered and I will send the other one back, the said it has to be in new condition knowing I already had most the wiring complete. I should have checked but I thought they were professional enough to send the write product,

These Guys Did Some Great Work On my hellcat & They were very quick which was the best part. I’m Use to shops taking hours or all day to install springs. I dropped it off at 9 it was ready by 1. Thank you guys again I will definitely be back. They also took some amazing shots of my car. Extra points for that.

Awesome guys and fair on labor cost. The only drawback is they only do basic bolt ons for diesels. Overall love this place

Took my Cruze to them a few weeks ago for a coolant leak (that I caused). Knowing they’re a performance shop I figured they wouldn’t be all that involved in fixing it for me. I have big plans for my mustang and wanted to see how they handled the Cruze, and how their customer service was before letting them work on the Mustang (I’m particular about who touches it). I have to say, they’ve earned my trust. They fixed my screw up, charged me a more than fair price, and came in on a weekend to give me the car back, as I wasn’t able to get it sooner. I didn’t really think shops like this existed anymore. Justin briefly talked to me about my build plan, and told me what was really necessary, and what wasn’t. I respect that. They are the only ones who will touch that car from here on out.

New full clutch installed they make the best to make it happen right on time

Very nice

Great customer service. More than helpful with helping me decide what I wanted to start on as far as performance and sound quality.

I live in South Austin and drive a 95 Eclipse GST that for the life of me could not find a shop in the ATX area to dyno and tune it for me. I have called countless shops in Austin and they said they did not know how to tune my car, didnt want to deal with my car, and some of those shops were asking for a ridiculous price for only an hour work of tune! Running out of hope, I called High PSI Performance and right away she scheduled me a day to bring my car in. I have had such an amazing experience with the High PSI family and I can definitely say they will be receiving more of my business. I highly recommend anyone in Austin who is looking for a dyno run and tune or any performance work needing to be done to give these guys a call. Though it is an hour drive away from Austin, Its definitely worth the drive for a friendly environment and high quality work. Thank you guys again for treating me and my car with great care and respect. A++++

The best

Provided there is such a thing,they are Tuner Gods

Yall suck at answering calls

Great service