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04 Forester XT Rinspeed manual 5 speed
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740 Posts
Discussion Starter · #1 · (Edited)
Hi!

I noticed a "wavelike" boost problem on my forester!

Hardwarechanges are:

TD04L
3port Grimmspeed Boost Selenoid
3" Turboback Exhaust
3" UPPIPE
STi TMIC
Subtle Splitter

Here is a log from today in 3rd gear! Outside Temp. 20°C, car warmed up carefully before the pull!
I marked the values where it occurs! Any ideas or what else do you want to see!?
 

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07 FXT sport
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1,736 Posts
Do some searching on boost oscillation, here, nasioc and/or romraider.

It looks like you need to adjust your turbo dynamics some (reduce).

dm
 
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