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**Murlo26** · 10-03-2012

The OEM manifolds ported work very well, they are a bit restrictive for sure, but spool up is always a good 400-500 rpms better with them and heat is managed better and you get to keep stock heatshields on the Evo X anyway.

Still made 570whp+ on the FPblack with one, it held it back for sure but was adequate.

Both have great benefits.

10-03-2012	#9
Murlo26 Join Date: Dec 2009 Location: Lino Lakes Drives: 17 Honda Accord Posts: 4,041	Re: GheyrodX - bigger, fatter, gheyer! The OEM manifolds ported work very well, they are a bit restrictive for sure, but spool up is always a good 400-500 rpms better with them and heat is managed better and you get to keep stock heatshields on the Evo X anyway. Still made 570whp+ on the FPblack with one, it held it back for sure but was adequate. Both have great benefits.