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Old 11-06-2019, 10:44 PM   #1
1ofakind03
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Member#: 472184
Join Date: Aug 2017
Default V7 Limited sti boost surge?

Hey guys, got a strange issue with my 02 sti limited. Has the ej207 with vf30. Has an intake (just installed) and 3" exhaust.

Was merging on the highway and noticed at half throttle or so it would spool great and smooth to 1 bar and then back down to. .5 bar, then back to 1 bar again back and forth. It did that consistently the duration of my drive (tried to see if it was consistent).

Thinking it may be my BCS but there must be a reason for it to limit the boost.. Is it the new intake I added? Had the stock box and high flow filter. Now on an open filter. Id be surprised if it was, never had a problem like that with an intake and exhaust on any of my other Subarus..

Thanks guys
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