Originally Posted by wallybloke
Never tried one buy people say they don't work.
On the TJ's 4.0 they are useless.
But the OP. Has a JK with the 3.8 V6.
OP.... I'm not sure on the induction system of the 3.8 V6. It is a completely different motor from the 4.0 straight 6 in the TJ's.
Hopefully someone with knowledge of your motor can help you out.