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Hi, have a 2003 Bug Eye WRX which has recently been remapped, since then under load 2800 - 4200 rpm when accelerating I am getting a hi pitched scream from the (i guess) turbo... any ideas on what this is, solutions, greatly appreciated.
my td04 used to whistle a bit after going decat but if its really loud it could be a boost leak or exhaust blow somewhere.
What parts have you changed before the remap?
Thanks guys, the garage that did the work had the intercooler off and checked the up-pipe, however to start with no whistling then after a couple of hareder drives it started, performance is good but not as sharp as when the remap was first complete, which sounds like a boost leak looking at what you are saying. Back the garage I guess.. Thanks again and have a good Sunday
hi mate, iv just had exactly the same problem with my classic, same symptoms, after remap and turbo swap.
It turns out the intake pipe to the turbo (from the air box that goes under the manifold) was split near the turbo, probably due to the increase in boost pressure, i need to sort out a silicone one now. hope this helps.
Sounds like boost leak. Hoses around intercooler and dump valve are common culprits. Check nothing has come off or is split. Mine made that noise once when i didn't bolt the dump valve down properly so check thats nice and flush.
Whistling Turbo under load
