Turbo blankets/beanie Opinions ?

[rx7boy]

Still trying to get my head round some things before for fitting my single

Looking for some advice on keeping my under bonnet temps down and increasing the gas flow through the exhaust system.

My original plan was to get the manifold, downpipe and hotside of the turbo ceramic coated, but due to cost its unlikely to happen

Plan B is to wrap the downpipe with some high quality heat wrap and also attempt to wrap the manifold as best I can, but that still leaves the hot-side of the turbo cooking temps under the bonnet.

What are people\'s opinions on Turbo blankets/beanie, the one im thinking of purchasing is from PTP,
http://www.ptpturboblankets.com/t4.shtml

What are people\'s experiences?

do they keep the temps down ?

are there any negatives are running one?

thanks