Quote:
Originally Posted by LinPark
I don't have a video of it (yet - I hope one isn't necesarry) but hopefully describing it will lead someone to the answer. I just got finished installing Berk HFC's this past weekend and previously I had put in Stillen G3's the week before. At wide open throttle I start to hear a high pitched scream (almost like a whistle) as the car heads into the 4k+ RPM range. I don't remember hearing that when it was just the Stillen G3's installed but it is definitely there now that the Berk's are in place. It doesn't seem to happen when the car is just sitting and rev'ing but only under true acceleration. Any thoughts on what this might be and whether or not it is just a normal behavior of this particular combination? I have the HKS Hi-Power exhaust as well. I did dismantle the G3's to install the Berk's - is there an easy way to detect small leaks on the intakes or cats?
Thanks!
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What you're hearing is the vacuum of air rushing through the filters/intake piping into the engine. Now that the entire breathing system is more open, a lot more air is flowing. You could hear this more prominiently through an SRI but even with the Stillens, now paired with your HFCs and CBE, is now more pronounced. Nothing wrong with it.
Just means you need boost!