Sometimes the best tune is the one you don't have to think about.
This one's my own car. Mk7 Golf GTI on the stock IS20 turbo with a Sprogley Motorsport intake kit. I finally got round to spending some time on it, and with a couple of Nurburgring trips planned, I wanted to get it tuned properly but sensibly.
The results
Stock: 245hp / 310ft-lb
Tuned: 306hp / 360ft-lb
61hp and 50ft-lb gained on the stock turbo. There's more in the IS20 if you want to push it, but that wasn't the goal here.
Why not just go for max power?
This is something I think is worth talking about because it comes up a lot. People naturally want the biggest number possible, and I get it. But depending on how you use the car, chasing peak power isn't always the smartest approach.
I've got Nurburgring trips coming up and a European car rally. That means sustained high load, high heat, session after session. The car needs to be reliable above everything else. There's no point pulling big numbers on the dyno if you're then worrying about it every time you're flat out round a track.
The other side of it is traction. Even with the Performance Pack VAQ diff, these GTIs will break traction if you throw too much at them. I wanted a car that puts the power down cleanly when I floor it, not one that lights the fronts up every time I get on it out of a corner. A tune that overwhelms the tyres every time you use it isn't fun, it's frustrating.
By keeping the boost sensible, the car still makes a really strong improvement over stock but with proper margins built in for both reliability and usability. It's not being pushed anywhere near its limits, which means I can beat down on it all day and not think twice about it.
It's not just about track use
The same thinking applies to anyone who wants a tune they can just live with. Not everyone needs the most aggressive map available. Some people want a car that's noticeably quicker, drives better, but isn't on the edge of what the hardware can handle.
A conservative tune done properly will still feel like a big upgrade over stock. The difference between 245hp and 306hp in a Golf GTI is significant. It pulls harder through the whole rev range, responds quicker and just feels like a more complete car.
Thinking about getting your GTI tuned?
See what we can do for your car at www.WP-Tuning.co.uk
