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exhaust sound like high idle?
hey my truck has a 4" turbo back magnaflow exhaust with muffler delete and it's dumped right after the cab.
now when i start the truck and let it sit...a couple minutes into the idle...the truck gets louder....and from it's normal idle sound, it goes SHHHHHHHHHHHHHHHHHHHHHH!! pretty loud...and when i tap the throttle, it goes back to normal.
i would assume it's just a high idle process...but the rpm's don't change when i stop the sound with throttle...if anything...it may even be gaining 1000 RPMs when it stops...also note...it's not really cold when this happens
2002 F350 Crew Cab 4x4
aFe Magnum Flow Intake
Magnaflow 4" Exhaust
Western Diesel A-pillar cluster
Add-a-leaf in rear
<--Clicky (my jeep's in the back...it might become a diesel one day too)