S2K@PR

Hi

Need some help deciding on upgrading exhaust on my turbo S.(430-450whp)

Currently own a Greddy spectrum elite dual, which is 70mm piping to 63mm dual piping and mufflers. Love the looks of this exhaust, but I feel its time to upgrade to a better diameter suited more for turbo.

I looked at current offerings but all are single styles which I dont like much (hks,greddy,berk etc.) And at the moment im not considering have a custom 3inch dual made.

So the question would be if a dual full 70mm would flow better and/or net better/same numbers than a 3" single.

Thanks!

s2konroids

If you take the center bore size of 3" from say downpipe to the Y section of the exhaust (where it splits into dual), then for the dual pi R squared dictates to get same flow from the duals you need 2.5" which actually puts it over 3".

Personally i'd go with custom 76mm bore to two 63.5mm, add a small centre backbox and two backboxes.

Hardly any drone with the power to get good power.

staylor725

I would also recommend going custom you can have them set it up any way you like.

Nelsonr31

My custom 3", custom is the only way to go.

S2K@PR

Nice. The welds looks very good.

Did you went 3" including Y ? Did you include a resonator? Is it to loud?

Nelsonr31

Yeah pipe from down pipe to both mufflers including Y is all 3" and no resonator. It's obviously louder then stock but not by much and at idle one would never know what's going on underneath. Couple other views.

S2K@PR

Yeah pipe from down pipe to both mufflers including Y is all 3" and no resonator. It's obviously louder then stock but not by much and at idle one would never know what's going on underneath. Couple other views.



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Looks great!! Great custom job! Looks like stock

What muffler did you went with?

Nelsonr31

^ Went with MagnaFlow offset/center mufflers and OEM ap2 tips.