Harvey is the dyno whiz and Jerry gives great repair advice Id recommend this shop to anyone thats having issues

If you are looking for a good, reliable tuning place that especially support Cobb Access, and have a good knowledge working on Subies, you are in good hand with Harvey and Jerry. I will definitely be going back for future tune-ups.

Best tuner. Takes the time to help explain things as well as give everything a vehicle has but also need reliable to drive. Would not trust any one else other then Harvey

Harvey is great, and is a phenomenal tuner. He takes great care of my STI and 240sx on haltech, and I always come away having learned something.

Excellent experience with Harvey. He went the extra mile when my car had an issue on tune day. End result, car is tuned and runs excellent! Great guy, knowledgeable, passionate about his art, pretty sure hes a sorcerer. Thanks again!

Its been years since I have been here but he does quite the tune! Soooo smooth doing a new build now and very excited to see what Harvey can do with it

Had my car worked on and tuned by Harvey and his crew. Cannot recommend enough. They dialed in my mods and fixed some issues before my dyno day to ensure all was in working order and ready. Dyno day went off with a couple small issues, Harvey instantly recognized what had happened and corrected them. Thanks again BoostCreep!

Harvey continues to be extremely helpful and informative with tuning and building cars.

I was extremely impressed and satisfied with my experience. Everyone was very helpful and insightful. Answered all my questions and made sure I got the right parts for the job. The install job was very professional and I could tell they actually cared about the work being done. I’m looking forward to bringing my car for future mods to meet my power goals. I want to get scheduled in for. Dyno appointment this is the place to go if you have a Subaru or other performance needs.

Harvey tuned my car into what it should’ve been when I bought it. Jerry and the other mechanic in the shop (I’ll remember next time) were able to install the cobb flex fuel kit and fuel pump a couple hours before my scheduled tune. I honestly can’t believe I didn’t do it sooner but I’m glad that Harvey and everyone else were the ones to do it. If you can running flex is a must on the FA. Thank you so much for answering all my questions and working with me. Highly recommended

Best group of guys in the business!!

Had my 04 sti forester tuned twice now by Harvey. Once for a gas tune and next for flex fuel. Going on two years and the car runs great and keeps me smiling. Its nothing crazy just stage three maxing out the stock vf48 turbo with some headers and other bolt-ons to accommodate. Ill be going back once this motor starts to wear or turbo dies. Slight over build with motor and better turbo that doesnt run out of breath for them to tune! :) Other employees are cool and car enthusiasts too. They can check over your vehicle to make sure its ready for tune and guide you on further power goals.

Harvey is a tuning genius and a rockstar. Plus hes a very sweet guy:-)

Hey, Harvey. It’s Reece.I own a fully built 2011 Subaru STI. Harvey did the final tune on my vehicle which is a high quality tune. The car runs amazing. Harvey was extremely patient with me as I kept running into a fueling issue at high RPM. Took me 5 months and 3 trips on his dyno to finally figure this out. Come to find out it was my fuel line routing that was causing cavitation which was directly effecting fuel pressure. I can’t thank Harvey enough for his patience. My car is still running AWESOME and I appreciate all the pointers he threw my way. I couldn’t be happier with Harvey’s services and how respectful he was towards me. He’s truly an amazing tuner and an overall great person to interact with. THANK YOU HARVEY!!!

Harvey has tuned my car several times. He does an amazing job and i wont go to anyone else.

I called Jerry and he was brilliant and helpful. Totally recommend!

Love this place ❤️🥰 weve gotten two tunes cant complain.

Harvey Epstein is the man!! He Protuned my 2004 Turd with a 2.5L STi Hybrid engine on E85! He meets all your needs even after the tune! I wouldnt recommend anyone else!

Definitely the place to go if you are having engine issues on a Subaru, whether you are modifying the car or not. Tuning shops know way more about the fine technicalities of how the engines run than a regular mechanic. Fast service and a reasonable price, too!

Great experience. Harvey is the man and I will trust him with every Subie I ever own.

Anyone with a Cobb Accessport must find the time to get a pro Dyno tune from Harvey, he will bring your car to life! Already had my car there twice and cant wait to bring it back again!

Harvey is great to work with and does a fantastic job squeezing the most out of your car safely.

I have been searching around everywhere for a knowledgeable shop with proper tuning training and familiarity with my standalone ECU and having the proper equipment to do the what I wanted. The tuner was very friendly and knowledgeable. We have talked off and on again for some time but I could tell it was worth the investment to choose these guys. I can say that I put my car to the test by driving 100 miles down there and 100 miles back after the tune. And not once did the car give me any issues back, after all the stressing it had. These guys are very fair and are worth at least talking too.

Harvey and his crew were extremely knowledgable and professional during my tune. Ran into some unique issues, but they were able to trouble shoot and resolve the problems and still get the tune done!

Harvey is absolutely great to work with and such a kind and smart soul in what he does. He answers all questions to the best of his knowledge and is always offering advice or expertise. We have gone to him on 3 separate occasions.

Harvey and Jerry are two of the nicest people Ive ever met. Harvey made me feel very welcome. Showed me a bunch of the projects theyre working around the shop. Harvey knows his stuff. He got in my car and was immediately able to tell I had a boost leak. So we did a smoke test and sure enough there was a boost leak exactly where he said it was. He was able to tune my car how I wanted it. Harvey walked me though everything as he was tuning. Explaining every adjustment he made. He really seemed like he wanted to help me with my car and keep it running healthy for years to come. These guys really do some good work! Thanks!

Amazing shop during down time Harvey loves going over cars in the shop with you obviously keeping requested details secret for some of the performance vehicles there. Harvey is a huge wealth of knowledge and is as friendly as can be and always open to helping people grow there knowledge about there car.

They went above and beyond when repairing the car.

Harvey is excellent, all the reviews about his tuning are spot on, he really took his time with my vehicle making sure everything was perfect it took a few extra dyno pulls than normally to work out the kinks but in the end we came out with a great tune for my Subaru. Wanna give a shoutout to the Mechanic side of his shop as well, during the smoke test we found out I had a intake leak because of a missing vacuum plug, he was very busy working on a vehicle and took the time to come take a look and make sure that’s all it was for me. If you have a Subaru don’t take it anywhere else, there’s a reason Harvey is touted as the best Subaru tuner in Colorado.

Very knowledgeable, great guys. Would recommend to others. I have traveled 5+ hours multiple times and will many more!

HARVEY IS THE BEST IN THE GAME

Great mechanics. Excellent shop. They just installed my cobb aos on my 08 wrx. Got tuned by harvy.

Cannot say enough about how professional and down to earth Harvey and Jerry are. I have been to shops all over the East and this is by far the best experience I have received. I have been here for diagnostics, repairs and tuning and every time I was blown away by the way I was treated. Harvey spent almost 5 hours with me on my tuning day making sure everything was safe for the engine but performed like a beast. Everyone should be going to Harvey for an E85 tune, you wont regret it! I will not use any other shop in this region.

Harvey knows his stuff. Hes reliably tuned my Subaru s for 8 years. Highly recommended!!

Harvey and Jerry are awesome! Harvey spent the time to go over my car before tuning, even found a potential problem with my intake filter and fixed it on the spot at no extra charge aside from parts. He was meticulous while tuning the car, and is a super knowledgeable guy who didnt mind explaining everything he did as he did it. My car has been running extremely smoothly since the tune. I would recommend the Boost Creep to anyone looking for protune services in Colorado.

Harvey, and Jerry are some of the best in the state! Harvey is hands down the best tuner in Colorado. Id highly recommend The Boost Creep for any tuning/repair needs.

Harvey is a humble automotive magician that made my car smoother and more powerful on all fronts. Loaded with knowledge and wiling to share. Thanks again!

They took my deposit for performing a tune and a turbo swap. I had to rescheduled the appointment which I did with over a month of notice. When I called to talk about parts before the new appointment time I was told I missed the original appointment and forfeit my deposit. So instead of having them install 5000+ dollars worth of parts and perform a tune they chose to take my deposit and lose out on quite a bit of money. I have heard good things about this shop, however the management and the way they treated me was unprofessional and an extremely poor business decision. Ultimately this happened in 2015 and they refused to refund my deposit and therefore I would recommend that anyone shopping around for a tune shop should look elsewhere.

I just had my 1987 Toyota Supra (AEMv2) tuned by Harvey and I had a fantastic experience and I left with a solid tune that I am very happy with! Harvey is very personable and professional and made me feel very comfortable. He also took time to breal down what he was doing and provided me with lots of details so that I knew where my money and time were going.I am very happy with the customer experience and the quality of the tune. If youre in the market for a tune, I highly recommend giving the Boost Creep a call!

Amazing! Very knowledgeable!

Recently took my 2013 Evo X in for a tune!! Harvey did an amazing job on it!! He took his time and answered all the questions I asked during the process! I will 100% be back when im ready to tune for e85 and will recommend him to anyone looking for a tune!

Great tune and service. 5k miles later and still boostin ! Ill be back again

Harvey and Jerry are what performance cars are all about: the love of flying down the road without a care in the world. They will take great care of you and your baby.

Great people, great service and overall a great experience. I had to commute quite a ways, which sucked, but every second of it is worth it for the quality of tuning/service. I am going back for sure.

Great people! Jerry and I talked for a few months through email about a turbo upgrade and when I finally called to place an order I had a few other ideas. Jerry told me what he saw in the past with my ideas and didnt recommend so I went with what he said and couldnt be happier!Thank you boostcreep! Ill defiantly be back.

Our shop RetroRoo wont use anybody but Harvey and his dyno brain child The Boost Creep! We love the peace of mind that an engine we just finished rebuilding will be safely tuned for power and reliability.

Best Tuner and performance installs

Great group of dudes. Jerry and Harvey are the best

These guys are pathetic. Call to find out what I need to do to have my honda ready for tuning and how I need to setup my ecu. Ask if I can buy a hondata socketed ecu ready for s300 and if they just plug In and tune off it. All he says is I dont have time to look at an eBay posting for you, Im working. Guy didnt even know that OBD1 with a jumper harness is used to tune the 96-00 civic. Guess they dont know what they are doing and dont want business. Wish there was a zero star for these zero qualified people. As stated before, the staff leaves the business to be questioned.

Great tuner. He keeps you informed and does great work.

Had a Dyno day on a 2016 subaru wrx with stage 2 + (according to cobb notes). Harvey tuned the vehicle to 221 baslined and 248.5 hp after tuned. Everything went smoothe as I was nervous getting such a new vehicle tuned, but am happy with the way the vehicles pulls much harder through 2-4 as i noticed the power dropping off dramatically at higher speeds.Overall Experience 5/5

The best there is

I drive an hour and 40 min to go to this shop. harvy was sitting in a sti preping for a dyno run. he said hello. he was really nice. Asked me a few questions about my sube. told me it would be a few befor some one could help. I told him thats fine. 50 min went by. I have spent my fair shair of money on my ca. I was told this was the place to go. Boy was i wrong. now with 4 hours of my day spent on a non productive event. Harvy may be a world class tuner. But his staff leaves his business to be questioned. I for one will not be returning to this shop. I think i can find a better shop. I think they will like the 5k i was going to spend. Wow what a disapointment

Terribly rude dont bother to call, just show up with a full wallet. This place is the reason people dont like mechanics. Not willing to give an estimate without charging.

Will take my car here every time I need a tune or performance mods done to my car.

Harvey is the only tuner to trust in Colorado. Yes, he is expensive but you really do get what you pay for!

The best tuner

Harvey is great!

Awesome experience