Should an OMI cause a hissing sound?

im no hero x

Veteran Member
Joined
Mar 28, 2007
Location
Tri-State
TDI
'03 Jetta Variant 5-spd
Hey guys,

I just installed a Kerma OMI (old style) and a DieselGeek lower intercooler pipe on my '03 jetta wagon today.

Everything seemed to be pretty nice and snug when I put it back together. I drove around tonight and under heavy boost there's a hissing sound. Is that the "tough sound" that Kerma mentions in their description of the OMI?

The car drives pretty much the same as it did before. Turbo spool seems like it may be just a smidge slower but nothing crazy.

Thanks!
 
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