# weird boost problem ..

**URL:** <https://forums.speedlife.net/t/weird-boost-problem/127865>\
**Category:** SON240sx Automotive\
**Created:** [September 8, 2009, 4:23pm UTC](https://forums.speedlife.net/t/weird-boost-problem/127865 "2009-09-08T16:23:46Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![schwiin\_27](https://avatars.discourse-cdn.com/v4/letter/s/ecb155/32.png) [@schwiin\_27](https://forums.speedlife.net/u/schwiin_27)\
**Post date:** [September 8, 2009, 4:23pm UTC](https://forums.speedlife.net/t/weird-boost-problem/127865/1 "2009-09-08T16:23:46Z")

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ca18det . i have a t28 bb and a greddy profec b boost controller. car pulls fine at base 6 or 7 psi when the system is off, fine at 9 the low setting and 13 the thing takes a quick nosedive at like 5 grand then goes right back to pulling hard…  
i havent run the car since last yr on the higher setting, till the other day, and it feels like it looses boost for a quick second then right back. i coundt actually read the boost gauge when it happened becuase immidatley my eyes go to the road to make sure its still going straight.

things i have tampered inbetween last yr running high boost and the other day cleaned that idle valve on the side of the intake.  
disconnected the battery , therefore having to reset the boost controller… was actually running 14 psi last yr…