Hi,
I have all mods in my sig and have about 25k on her. This deep hissing sound (almost like air leaking) I am hearing is more noticeable when I first start the car up in cooler weather and it seems to be under load when in gear. I can clearly hear it when driving down the road and in a higher gear with low rpms (and exhaust is quiet) and when I give it gas, even with the slightest amount of gas but still under load, it begins to make this noise. I can hear it along with the crisp sounding exhaust, it almost sounds like it is coming from my A-pillar gauges or dash cluster but pretty sure it is coming from engine.
It usually goes away in warmer weather or if I driver her for a long time but recently it seems to be lasting a bit longer before it goes away.
anyway, any thoughts?
I thought maybe
torque differences in eaton to intake,
injectors in cold weather,
or just normal sound....
thanks for any help!!!!
I have all mods in my sig and have about 25k on her. This deep hissing sound (almost like air leaking) I am hearing is more noticeable when I first start the car up in cooler weather and it seems to be under load when in gear. I can clearly hear it when driving down the road and in a higher gear with low rpms (and exhaust is quiet) and when I give it gas, even with the slightest amount of gas but still under load, it begins to make this noise. I can hear it along with the crisp sounding exhaust, it almost sounds like it is coming from my A-pillar gauges or dash cluster but pretty sure it is coming from engine.
It usually goes away in warmer weather or if I driver her for a long time but recently it seems to be lasting a bit longer before it goes away.
anyway, any thoughts?
I thought maybe
torque differences in eaton to intake,
injectors in cold weather,
or just normal sound....
thanks for any help!!!!