After doing some research I decided to go with Guhl motors for my ecu flash. This shop is about 90 minutes from me (Philadelphia), so I wanted to drive the ecu up rather than sending it in the mail and trusting the USPS. After calling to confirm that this was OK, I was on my way. Upon arrival the guys at the shop were nice, and Mr. Guhl himself came out to speak to me and get my ecu. He seems like a really nice guy. About an hour later everything was done and I drove home and reinstalled the ecu. The bike runs amazing!! Its smoother throughout the rev range, no longer bangs and pops like crazy on decel, feels more powerful, and is just overall a much happier bike. I will be bringing my next bike here and the bike after that etc. I highly recommend. 💯💯

Fast service. My old Honda Interstate runs better than ever after the reflash. Ill be sending the ECU from my Fury next. I highly recommend this business.

Had my ecu flashed by him a year or 2 ago on my z125. Bike is slower than a stock bike after his flash. As if they werent slow enough. Bike falls on its face at higher RPM. I wish he would reach out to try and make it right. Now looking into other tuning options. I wish i kept the stock flash on the bike. Dissappointed. Waste of money

I dunno going off their ability to answer emails id say so far the service is pretty poor. Ive made 2 attempts at contacting them and they never seem to get back to me. If there was another dyno shop for bikes in the area i wouldnt bother with them.

Sent my Ecu on a Wednesday and overnighted it to them. They received it on a Thursday and shipped it back out in the same day. Couldn’t be happier about that. These guys are awesome

Great group to work with. Dropped in one day a while ago and they flashed my ecu while I waited. And gave my a tour of their impressive shop! Highly recommended!

Read couple reviews and some videos of Dons ecu flashes and decided to get my 2016 ZX6R flashed and the difference is night and day. Took Don about 20 min to get it all done and was worth every penny. Great group of guys and highly recommend!

I sent my ECU in for programming and fuel map. I have only put 50 miles on the bike so far and I cant say enough about how improved the throttle response is. If someone is telling you to get your bike Dynod or to put a Power Commander on it...CALL DON FIRST! Fast turn around.

Absolutely Awesome in every way. Don is an absolute genius and a total gentleman. He explained everything every step of the way. His staff is equally awesome. Theyre all incredibly knowledgeable and extremely friendly.After having my brand new Kawasaki ZX10Rs ECU Flashed at Guhl Motors I rode it 77 miles back home. There is without question a HUGE noticeable difference in every way. Much more power. Very smooth. Pulls longer and stronger. Its a totally different bike.I couldnt be happier. Great job. Thank you......

I was so surprised when I called to get put through directly to Don. Great customer service. Had ecu reflashed for my Honda Fury. It is like a completely different bike. Faster, quicker, lower idle. I am one very happy biker! Highly recommend Guhl Motors to anyone wants to improve performance!

Don and his staff are on a totally different level when it comes to ECU Flashing! Very knowledgeable and with great customer service!! Had a good time hanging out and learning everything they have to offer!!! HIGHLY RECOMMENDED!

These guys really know their stuff also friendly and courteous in a casual way (which is good).

Very nice atmosphere and very professional. Don Guhl is a great guy.

Read the reviews and watched a few videos about Dons ECU flashes. And decided to let him reflash my 2016 ZX10R, And man o man im impressed with the results. I shipped it to him on a Friday, he received it on monday, flashed it Tuesday. And i had it back in my hands on Wednesday. Installed it the min it came in the mail. Talk about waking up a sleeping dragon omg. It sounds different, the throttle is more responsive/smooth and lets not forget about that extra kick of power that Kawasaki had locked away now has me holding on for dear life. Much thanks to Guhl Motors.

Great place to get your micro sprints dynoed and all your injection needs!

Reflashed my ECU....runs awesome!Great customer service!

Great guys and great service. Got an ECU flash on my K4 and it really woke her up!!!

Don is a great guy and knows his stuff. Was worth a trip from Canada.

I dont write reviews that offen but I have to give thanks and gratitude to exceptional service and workmanship when it is due. I took my 16 zx10r to get flashed I am blown away by how this bike performs. Crisp up shifts autoblip down shift and power throughout the rev limit it is a totally different bike. Don guhl you truly are THE DON of ecu flashing. Thank you Rob for answering all my questions after the tune. To all the people still thinking about an ecu flash get it done at Guhl motors what are you waiting for.

Company is Highly recommended by Prior Customers...

Great place to get your ecu flash

Great