Also do i need to run two nozzles? one in each bi-pipe?

 

You don't have to. When you run larger turbos and you want to run more meth, than ideally two nozzles would be sufficient. You should be okay with one nozzle about 6 inches from the throttle body.

GenX would be nice, but not really needed, especially on K03's or K04's. I think those pipes really shine on GT setups.

 

1. if i only run one nozzle doesn't that mean i only spray into one turbo? wouldn't it be more sufficient to spray both regardless?

2. Are the stock bi-pipes fine then with the samco tbb?

Thanks for the help.

 

The VAST kit runs with a dual nozzle system.

http://vastperformance.com/shop/prod...roducts_id=110

 

The water/meth is being mixed with the charged air just before it enters the TB. It doesn't go through the turbo.
It all meets and mixes in the TBB anyways.

I think it'd be fine as long as you can secure the nozzle bungs in the plastic good so they don't leak.

 

so then aren't i only cooling the charge from one turbo? ideally wouldn't i want to cool both?

 

I would because it's easy to do, but it's not necessary.

Your not getting the bi-pipe and y-pipe mixed up are you?

The charge air from both turbos mixes together before it enters the throttle body so it doesn't matter which pipe it (h20/meth) comes from it will still be evenly distributed throughout each cylinder.

I not trying to sound condescending I'm just trying to help you understand.

 

I'm sure the bi-pipes are what i'm talking about i just thought why not spray both for more cooling. Thanks for clearing things up though this is all vaery new to me.

 

Actually anywhere in the pipe is fine as logs have shown zero gains from near the T.B all the way down to the IC end. I would definitely run 2 nozzles instead of 1.

Actually the pipes would benefit any setup in more ways then one actually theres around a dozen reasons, but heres a few without stating the obvious reasons why.

Theres probably a reason why the factory RS4 pipes are nothing like the U.S k03 pipes and much larger and not plastic.

1) .065 wall aircraft grade aluminum U.S certified, all mandrel bent & very smooth on the inside.

2) The diverter opening on the factory pipes are tiny, improving this area helps in boost response and creep for one.

3) The factory pipe fits .5 inch in the boot these pipes fit 2.5 inches in the upper IC boots keeping the boot and pipe in place also eliminating any flex in the boot.

4) Factory pipe changes shape and size 5 times these don't.

5) Already setup with meth bungs welded on & wrinkle coated in black.

6) Upper pipes fit further into the T.B boot with a very aggressive bead roll on both ends, will never pop off especially when coupled with a proper clamp.

7) Will leave plenty of room to grow and won't heat soak as bad as the factory or others.

Just a few reasons.

 

how much are these bi-pipes?