Quote Originally Posted by Ramee View Post
Yes. Thanks, I get some idea about it. I think polo 77tsi has so small engine and a intercooler so cooling through already available radiator and pump for engine cooling may be cost efficient?

But for bigger engine may need a separate water pump + radiator + new water air intercooler. Anyway this should bring more better efficiency because A45 using it with 29 PSI boost. But conversion of a standard type intercooler system to a watercool type may be prohibitively expensive.
77tsi would be cost, packaging & weight.

I don't a water/air intercooler would be OTT expensive but it would require a lot of thought for possibly not a lot of gain. It's not a new thing.