Friday, November 6, 2026 · Customer reviews of US businesses
The Fair Hearing score
Excellent
24 reviews
Select a line to read only those reviews.
Honesty, pricing, process and quality scores appear once 5 customers have rated them.
We create custom engine calibrations for BMW E-Series, F-Series, and G-Series. We offer our services for the N20, N26, B48, N54, N55, B58, S55, B58, and S58 engines.
EJS Tunes (ejstunes.com) has 24 customer reviews on The Fair Hearing, with an average rating of 4.8 out of 5.
24 approved reviews, newest moderated first
Very smooth operation with EJS himself! got back to me fairly quick even after hours! And so far i’m loving the deafening flames LOL. Definitely check him out, he’s nice, he’s understanding, and he goes above and beyond to make his customer happy. Thank you again EJS
By Sameer S.
Super fast replies, Great support. Helped me with everything i needed and very quick
By Nakhin
Flames are good but around 3 to 4k rpm it like loses power for a second, when going back to MHD stage 1 this does not happen, so I’m assuming it has to do with the tune
By Jared P.
5 star tune is perfect 😌 Sami even took time to have the tune perfectly definitely recommend
By Ian H.
Another amazing experience! I purchased an additional map and I love it even more than the last! Highly recommend EJS tunes. Extremely helpful and always friendly!
By Nathaniel H.
The only thing holding back a 5 star review is the website was a little clunky. Kept logging me out and the email link during the tuning steps didn’t work. However, I went to the live chat support on the website and within 2 minutes I had a response with a new link to help me out at 6:00 in the afternoon. The tune works perfectly, super fast and easy process which had my car tuned within 5 minutes and spitting deafening flames a couple feet long. As someone who never leaves reviews, I figured I had to with how easy everything was and how quickly I received help during the only hiccup in the process.
By Ethan P.
Have gotten tunes for my 335i as well as my e46 325i and @alpine.n55 has been nothing but help in changing the tune and helping quick response definitely the only place I got for any of my tunes definitely recommend these guys 👌🏾👌🏾👍
By Sebastian R.
Knocked my down pipe loose 5 minutes in. Once I got the down pipe back on it was perfect.
By evan
