I know some of you will jump in and say 4 just because stealthmodes kit uses(not bashing, great kit none of the less) it but doesn't mean its right. Most aftermarket kits use 3an and a few ppl told me to go 3 what do you all think? Its pretty much the same price for both lines too.

 

You saying everyone's a bandwagon rider? Truthfully, it really doesn't matter all that much so whatever your little heart desires

 

The only thing I have heard about the subject is that it is a preferrance. The one scientific post I read about it said that it really doesn't make any difference.

And stealthmode kits can be ordered with -3 as well. It takes a little longer, but anything is possible.

 

-3 or -4 you wouldn't even notice much of a difference

 

doesn't a 4 require an oil restrictor?

 

none of them require an oil restrictor if you have a good turbo.

 

ya cause some peple say with a 3an your pressure would be a bit more lower then the 4 an, and turbos don't need alot of pressure to lube it so thats why i was wondering. Anyone using a 4AN haveing problems?

 

-3 and -4 have zero pressure difference. If anything, it will be FLOW that is effected. If -4 caused any problems at all, I think I would have heard about it about 1,000 oil line kits ago.

 

can u clear up WHEN a restrictor would be needed? i thought i read the oil pressure has to be within a certain range hence the requirement of arestrictor on some lines

 

when you dont have a proper flowing return line then you need a restrictor