Specialists In Improving Your Vehicle

Get the best from your vehicle with our specialist tuning services. ECU Remapping will transform your vehicle's driveability and performance.
ECU Remapping

Mobile Tuning Service

Rolling Road Tuning

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Welcome To SM Tuning Overall rating: ★★★★★ 5 based on 269 reviews
5 1

Octavia vrs

★★★★★
5 5 1
Previously done my astra gsi and insignia(both still perfect 2 years later) and now hes done my octavia vrs and what a difference, not just the power but the smoothness of the engine is awsome.

Astra H 1.9 CDTI

★★★★★
5 5 1
Absolutely amazing service provided by Sean today, very happy with the results. Would strongly recommend SM Tuning to anyone ! 5 stars

Astra H VXR

★★★★★
5 5 1
I have previously had my car mapped to stage 3 which inwas pleased with, however today I took a 480 mile round trip to see sean to have a new turbo mapped in and some toys mapped in amd all I can say is WOW, what a difference he has made. The car is smoother and faster. I cnat wait to make the trip again in a few months for more power! Well worth the trip!!!

About Us

SM Tuning was founded in 2013 by current owner Sean McGarry. We are primarily an ECU Remapping specialist based in Berkshire. Having started in the industry back in 2010, SM Tuning was born in 2013. Since then we have tuned over 5,000 vehicles directly and for our dealers. We have a nationwide service covering the whole of the country, with rolling road facilities based in Stevenage. Our wide range of tuning tools support most makes and models of vehicle on the market today. We pride ourselves on offering a first class service. 

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