Twin Scroll headers and up pipe
#4
Orange Club
iTrader: (11)
Just taken delivery of my new forged 2.5 which is intended to run at around 500/500 once I get a new turbo on. This is a twin scroll setup and my original plan was to my standard JDM twinscroll headers and up-pipe - neither the engine builder (Subaru4You) nor the mapper (Simon/JGM) expressed any concern over that plan.
I was going to get them ceramic coated but as it happens, I got hold of a set of Tomei equal length headers for a price I couldn't refuse and I've had them and my Milltek downpipe coated instead.
When I researched the Tomei headers they appeared to offer a 20bhp gain: worthwhile, but not staggering. The JDM headers really are pretty good tbh.
HTH.
I was going to get them ceramic coated but as it happens, I got hold of a set of Tomei equal length headers for a price I couldn't refuse and I've had them and my Milltek downpipe coated instead.
When I researched the Tomei headers they appeared to offer a 20bhp gain: worthwhile, but not staggering. The JDM headers really are pretty good tbh.
HTH.
Last edited by TimH; 13 July 2009 at 12:39 PM.
#5
Just taken delivery of my new forged 2.5 which is intended to run at around 500/500 once I get a new turbo on. This is a twin scroll setup and my original plan was to my standard JDM twinscroll headers and up-pipe - neither the engine builder (Subaru4You) nor the mapper (Simon/JGM) expressed any concern over that plan.
I was going to get them ceramic coated but as it happens, I got hold of a set of Tomei equal length headers for a price I couldn't refuse and I've had them and my Milltek downpipe coated instead.
When I researched the Tomei headers they appeared to offer a 20bhp gain: worthwhile, but not staggering. The JDM headers really are pretty good tbh.
HTH.
I was going to get them ceramic coated but as it happens, I got hold of a set of Tomei equal length headers for a price I couldn't refuse and I've had them and my Milltek downpipe coated instead.
When I researched the Tomei headers they appeared to offer a 20bhp gain: worthwhile, but not staggering. The JDM headers really are pretty good tbh.
HTH.
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