Joined
·
8,804 Posts
ok, now I know it's not just me, because I've heard one other report. The power comes on differently, and I have had to adjust the boost gain. In one respect, I can use lower gain because the pipe allows the turbos to hit harder without pushing the boost gain too high. But on the other hand, it's clear - my car builds boost more slowly from around 0.3~1.0 bar. Back to back testing was easy, it takes 10 minutes to swap pipes.
However, the car itself feels smoother and seems to pull more smartly, even though the boost gauge is reading lower. So I'm really at a loss to explain what is happening. I know plenty of people have just slapped on the pipe and made no other adjustments and enjoyed improvements, and my car's top end power is a bit higher, almost unstreetable (in Seoul I mean, not some highway in Montana). In other words, there were times in traffic when I could wind up the car WOT. I need an empty road now to go full boost. Well, it's not like night and day, but enough to notice "whoa, that's a bit more kick than it had before".
I also found a boost setting that made the turbos shuffle again. In general, the pipe seems to ask for the boost gain to be raised. The only problem is that with the gain set that high, the boost controller can't hit target boost and overshoots. I'm probably doing something wrong, but if I set the gain low enough (around 64 on the Power FC) so that the boost controller hits 1.75bar (what I've got it set at), lag is unbearable. With the gain at 73~74, I hit 1.87~1.90 bars, regardless of the actual boost setting.
Maybe I ought to install my ball-valve manual boost controller...
However, the car itself feels smoother and seems to pull more smartly, even though the boost gauge is reading lower. So I'm really at a loss to explain what is happening. I know plenty of people have just slapped on the pipe and made no other adjustments and enjoyed improvements, and my car's top end power is a bit higher, almost unstreetable (in Seoul I mean, not some highway in Montana). In other words, there were times in traffic when I could wind up the car WOT. I need an empty road now to go full boost. Well, it's not like night and day, but enough to notice "whoa, that's a bit more kick than it had before".
I also found a boost setting that made the turbos shuffle again. In general, the pipe seems to ask for the boost gain to be raised. The only problem is that with the gain set that high, the boost controller can't hit target boost and overshoots. I'm probably doing something wrong, but if I set the gain low enough (around 64 on the Power FC) so that the boost controller hits 1.75bar (what I've got it set at), lag is unbearable. With the gain at 73~74, I hit 1.87~1.90 bars, regardless of the actual boost setting.
Maybe I ought to install my ball-valve manual boost controller...