They are two different extractors, both the for X3 Excel.
The first one is for a SOHC, and the second listed is for the DOHC Excel.
The SOHC extractor has a round pipe where it meets up with the header, as it only has a single exhaust valve per cylidner.
The DOHC extractor's pipe is elongated as DOHC has two exhaust valves per cylinder, and therefore has a different shape opening in the head where it meets up with the extractors.
When you order, you must specify if yoru car is a SOHC or DOHC model, as the extractors are not interchangable.
I have the HVE 4 into 1 extractors (headers) on my 95 Accent/Excel. I only really noticed top end gains, which is usually the case with 4 into 1. My only real issue with them is that there is no flange at the end. I had to get it welded to my flex pipe. Had the Shark Racing ones been available, I definately would have gone with them. They are complete from the exhaust manifold to the Cat, and from the looks on the website, polished.
RPW used to make headers for the X2. I'm not sure if they still do though... www.rpw.com.au
[Edited by Pumbaa on Feb 20, 2003 9:42 AM]
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Timothy Zacher
2007 Hyundai Sonata GLS
2005 Hyosung Comet GT 250
1993 Mazda Miata
Des Moines, WA
"The other guys are all jealous of me, When I cruise in my Hyundai Elantra GT. And the girls always feel a romantic explosion, When they learn that my warranty covers corrosion." (Dave Barry - Seattle Times)
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