6 port actuation
#1
Can someone please tell me about exhaust back pressure thats supposed to open the auxillary ports in my 90 model
ive heard lots of different opinions about how i should NOT run headers as i will lose the required back pressure to open these ports thanx and hi from Australia.
ive heard lots of different opinions about how i should NOT run headers as i will lose the required back pressure to open these ports thanx and hi from Australia.
#9
There is a small hose (maybe 1/8" or 1/4" ID) that connects to the header pipe from the 2nd exhaust port. You only need 2 - 3 psi to open them. Or if you have a cat. converter you can run a split air tube from the cat.
#10
Yep. on the 86-88 13B's the secondaries open up using a small amount of pressure from the exhaust. Yes, i do have headers, and yes, it obviously has atleast 2-3 psi of pressure in the pipes, it does have that back pressure in there. and i dont have tennis ***** up in my ****. Like ILUV wrote, its a small tube/pipe wutever that connects to the exhaust to get pressure from the exhaust to open up the ports...Im not on crack. Sorry...didnt realize you have a 90. MY BAD..