G-R Performance LTD

Amazing set of lads that know their stuff, turned my car build around from a non runner to 500bhp+ monster and very well priced. GR are the best specialists ive used so far for my subaru A+++

Huge thanks to Garry & James for getting my Evo working again as it should!After taking it to a recommended ‘specialist’ for mechanical work and mapping the car had constant issues resulting in it not being able to be driven. The guys at GRP quickly discovered and rectified the numerous bodge jobs with the ECU and E throttle wiring and even managed to point out parts that had been incorrectly supplied and installed resulting in the issues.The car’s now running 400+hp and feels like a completely different car.Highly recommend GRP and won’t be taking my Evo to anyone else from now on.If you’ve been recommended an Evo ‘specialist’ around Sheffield, do yourself a big favour and make it GR Performance, you’ll massively regret it if you don’t!

Top guys, wouldn't go no where eles I would and have recommended everyone best in the evo game...Ry

Friendly guys that work there. Very polite also

Spoke to the guys at Gr performance. Was very helpful getting my subaru impreza booked in for a map check, a professional and honest service explaining what they was doing and looking for. Would highly recommend anyone to use them and I will be doing so in the future.

Had bits done by the guys here recently and used their RR a few times. All 10/10, huge knowledge, friendly and honest.

Took my Subaru in for mapping after having it previously “forged” got a call less than an hour later to explain something had gone wrong so left the car at g-r for diagnostic and they found out the engine wasn’t built correctly so they stripped it down and rebuilt with actual forged parts, new ecu plus a multitude of other thing, they was so helpful and kept me updated all the way through (even during covid and moving premises) there aftercare service is something else, I would never go anywhere again g-r for the win would 100% recommend