I was just wondering if any of you have had what sounds like compressor surge or a cell phone alarm from under the hood. I hear it right before the bovs open under heavy load when lifting off the gas. I have checked all the charge tubing and swapped out a different set of bovs, and I also tried vta and recirculating them but I still get it. Im seeing 15 psi of boost and the turbos just scream under wot condition. ;)
I have contacted LMS and I am working on getting a video for them. It goes away if I revert back to the v7 map and put the 2bar map back in. I love this tune and the service LMS has given me is top notch. I am not disappointed with it I just want to make sure something isn't going to go kaboom.
Its normal. Well at least a bunch of us have it. I'm convinced its the blow off valves as well. No problems so far!
Probably exceeding the rating of the bovs.
I'm at 18 psi with no odd noise on lift. My bov's are vta as well.
Some users have reported hearing a honk or similar duck-y/geese-y sound with the 4X; perfectly normal.
The sound happens with very little boost. The wastegate is going to 100% at very low throttle levels to build boost. I wonder if it is related to that? Mine doesn't do it at full on boost levels (at least I don't think so).
http://youtu.be/v4Nz2MeLA1E
Here's an unleashed video. Does it sound like this?
This is exactly how mine sounds. I'm pretty sure it's normal because of the higher boost pressure. I saw 16.7 yesterday.
What the heck was that. Mine doesn't sound anything like that. Just the normal PHHHT when I lift at WOT. I'm running the 4X 3BAR.
Mine makes the same sound as glock-coma's. Love it heh heh. let off right after a shift or right before you get 2 very different noises