Quote:
Originally Posted by RichX
Keen to do up-pipe, just because of cat in it and risk to turbo/engine.
Headers, wanting to keep the burble (ULH), not much in them power wise over stock?? Same diameter etc. Different design headers? Don't have a need to pull them otherwise.
This is still single scroll VF turbo.
Tune still required for up-pipe? Guessing no cat might throw out the tune a bit.
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UEL is defiantly the way to go.
They are higher flowing and less restrictive than the stock item. The oem sti headers I pulled out had tiny pipework in comparison.
25hp and 25nm on ASG's dyno I would definatley recommend doing them and the up-pipe in one hit. That was on my factory VF35..
You have to pull them off to get to the up-pipe anyways
Retune required.
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