21 Where’s the grunt gone?
You’ve been out playing in the mud and on that last section of track awash with red goo and a little too much speed saw slush pumped into places where the sun definitely doesn’t shine. Your intercooler is hugely important to your get-up-and-go ability and now it’s clogged with grunge, the all-important flow of air is restricted and the combustion temperatures are on the rise, making your engine way-less efficient. Don’t wash it out with high pressure water; better a gentle trickle running through it will likely do the job. Those aluminium fins are fragile, so be kind!