For most turbo's, is it ok to use a -3an feed line or would it be wise/reccomended for a -4? Keep in mind their will be a restrictor in the feed too.

Thanx!

 

I've always used -3... I'm not sure if there would be any benefit or harm in running -4 lines. Why do you want to run the larger line?

 

I don't want to, I'm just trying to figure out the most convenient fittings to use and there are diff fittings for each one. I've already decided to go with a -3, its what I've always used on everything I ever boosted as well...but seems like a lot of companies run a -4.....