This bike was a monster by the time it was done! But you may well ask why remap a GSX-R when it’s still got a stock exhaust? Here’s why; there is so much to be had from de-restricting the ignition and secondary butterflies (for much more mid-range punch).But the real gain is in your throttle hand – the feel and control of the engine.

What we see quite a bit of is this; an owner has a bike like this GSX-R for 3/4 years, gets used to it and starts looking around at newer kit, BMWs and ZX-10Rs and so on. But, in reality, doesn’t want to lose (and spend) a fortune making a change. So they look to update the bike they have, and for £300-ish an ECU remap will make an old GSX-R feel like a new one…

But we’re bound to say that! Here’s what Paul, the owner of this one, had to say via email after he rode it away:

Hi Mark. Great ride back to Sheffield on the back roads via Stamford and Grantham. The engine felt fitter straight away. The snarl and the growl were there before but now longer and with more edge. It never lacked acceleration but now on wider throttle it pulls with even more energy. Felt like I was in one gear lower in the higher gears – probably because the throttle response was keener. Good to see the fuel 3D graphs on the screen and where you work your magic. Cheers, Paul.

It maybe running a stock looking setup but this 'old' GSX-R1000K5 now feels like a new one...

It maybe running a stock looking setup but this ‘old’ GSX-R1000K5 now feels like a new one… Lovely bike.