Hi,

I installed a turbo inlet hose on my 2012 sti due to the old one having a leak in it

Everything is installed correctly I've triple checked all fittings

When the car is cold its idles low then high and settles down to about 1000rpm then very slowly drops to to about 600rpm after

is this normal?

any advice or input is appreciated

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363hp and 499.5nm
gtps03 turbo on 98ron BP
2012 Wrc Blue Wrx Sti R spec (ARGH SPEC)