Are there any trade-offs of an intake silencer delete on an '04 WRX, and does it require a protune to take advantage of the improved breathing?
As of today, I currently have the following improvements to my otherwise stock '04 WRX:
o Invidia [catless] turbo up-pipe,
o PTP turbo blanket,
o Invidia Q300 + divorced wastegate downpipe w/cat and
o COBB AccessPort V3 Stage 2 91 v310 tune.
When asked if there are any compatibility issues with the silencer delete, COBB support says:
"From our experience, this is not an issue on the 02-05 WRX."
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