26-06-2016, 09:45 PM
The straight-through exhaust will be helping, one of the best cheap mods you can do on a diesel. Everything you've said is right, the clutch should be fine. If you can get some cooling on the brakes that would help a lot, as would fresh fluid if it hasn't been done recently. Just make sure all your levels and pressures are right before you go for each lap - tyre pressures need to be lower depending on how hard you want to drive it. Check wheel bolts are tight too.