crazyfornitro

[8D] Hello to all my fellow nitro and electric fanatics,I have a ? hope someone can answer quickly,I am rebuilding my 4 tec with the original .15 why because i got piston and sleeve for 10.00 my other 4tec took an 2.5 upgrade but whats the needle settings it has two low and high and i though years back there was porting tips or any tips i can do to make a little more power thanks to all and i enjoy seeing all the nice pics man they are pretty.

Thank you,crazyfornitro