A common modification I've read about involves removing the double butterfly throttle body, can someone tell me what criteria (the temperature of what) determines wether one or both butterfly's open?

I realize it is a safety feature for controlling boost/fuel/air while the car is cold, but what actually determines when both butterfly's open? Is it oil temp, intake temps, coolant temps or something else?

K

 

the ecu reads all then determands when to open the set in the uim (2plates 1shaft) the gas pedal- driver opens the tb set

 

Just got rid of mine last night but I am still waiting for my intercooler, elbow, couplers, and intake b4 I get to see if it was worth taking out. We shall see....

 

It ended up not being an issue this weekend as the stock intake temp sensor was too slow to respond to the drop in intake temps due to me spraying Nitrous directly on the intercooler during my dyno runs... that was good and BAD... Didn't have to worry about it closing one of the butterfly's but then had to worry about the PFC not realizing it needed to dump more fuel because of the extra air flowing due to it being so much cooler...

Thanks for the info, I plan to do my conversion and gain that bit of extra flow here shortly!

K