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junior barns · 10-03-2015, 04:26 PM

Been out of racing for about 15 yrs but I can remember when we changed from our Stahl headers (2 inch) to a Davis step header (2,1 7/8,1 3/4). Didn't see much gain until we added an 18 inch extension on the collector. Really brought it to life.

What was it trying to tell me???

10-03-2015, 04:26 PM	#12
junior barns Senior Member Join Date: Jun 2006 Posts: 541 Likes: 11 Liked 20 Times in 14 Posts	Re: Merge collectors Been out of racing for about 15 yrs but I can remember when we changed from our Stahl headers (2 inch) to a Davis step header (2,1 7/8,1 3/4). Didn't see much gain until we added an 18 inch extension on the collector. Really brought it to life. What was it trying to tell me???