Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - Is the butterfly valve in the throttle body supposed to be closed shut?

tracerit · 06-26-2016, 07:11 AM

I had high negative LTFT (-10 to -15%) on idle and off throttle for a while when I had my Perrin CAI installed. Also had rpm dips when I came up to a stop that would blink off my DRL LEDs. But now it's back to normal (positive 2-5%) with my stock airbox installed.

During the swap, I noticed the butterfly valve in the throttle body was slightly open. Picture is attached. Is this normal?

http://imgur.com/cFZvyWk

06-26-2016, 07:11 AM	#1
tracerit Senior Member Join Date: Aug 2012 Drives: '13 SSM BRZ Limited 6MT Location: Orange County, CA Posts: 1,067 Thanks: 593 Thanked 198 Times in 137 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	Is the butterfly valve in the throttle body supposed to be closed shut? I had high negative LTFT (-10 to -15%) on idle and off throttle for a while when I had my Perrin CAI installed. Also had rpm dips when I came up to a stop that would blink off my DRL LEDs. But now it's back to normal (positive 2-5%) with my stock airbox installed. During the swap, I noticed the butterfly valve in the throttle body was slightly open. Picture is attached. Is this normal? http://imgur.com/cFZvyWk