tvis plate

[evil86]

hey guy, i just want to know if its better to run tvis plate on a bigport 4age or not?

[ke70dave]

yes it is

they are designed for them, and they work better with them, pluss you get more grunt down low with them, so why woudl you want to take it off?

[reecegze]

Like i said phouc.. Without tvis the intake sucks to much air ,restricting power so the tvis butterflies reduce airflow untill peak rpm then they open to give more power..

[adam]

What's been done to the motor?

If it's near standard form, it's best to leave it in for better low end torque like explained above.

If you're running longer duration cams, I've heard above 272degrees, it's best to remove the plate or disconnect the TVIS.

[wide s13]

when i put 272 cams in i removed ran hella better with stock bottom end