Is it a turbo? If its not dont bother and gtfo of the FORCED INDUCTION thread..
If it is however, at the end of the day a restriction is a restriction and if you can remove restriction I say do it..
Weighing up gain per dollar is down to personal choice, if the cost is minimal then you have nothing to lose..
I know for sure. If I didn't have my skyline my diesel Ute would be getting a bigger intercooler, unichip and a bigger exhaust, would only gain me 20-30kws ,more torque and a better feel. But cost per mod I get far greater gains on the skyline so all my kids money goes there..