Hey all,

Haven't been on in a while, last weekend whilst towing my motorbike out to cooyar I heard this strange hissing sound coming from under the bonnet, checked all the obvious boost/vacuum lines, intercooler piping and boost gauge line, no avail. It only happens around 10psi and above and has a mad almost tyre deflating hiss under load, only over 10 psi, anything under is quiet. I figured it could possibly be the egr but I'm unsure..... The intercooler piping is looking pretty crap as it is (done nearly 400,000 between 3 engines) so I'm gonna replace it along with some vacuum lines.

So my questions are:
1. Where could the leak be coming from?
2. Does anyone know if anyone sells a intercooler silicone hose kit?
3. Where are ALL the vacuum lines? (I've found turbo, ebc, one that hides up the back of the intercooler) AND
4. Will the aftermarket cruise control have a boost line? (A little random but there's a boost line that goes over to the drivers side to a module which I have nfi what it is)

Cheers all