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XfireZ51 · 02-18-2008

I had a Marc Randolph chip in my car when I added Watson headers. I found that I needed to reduce the timing due to eliminate the knock retard. After putting the headers on, the trap speed didn't change. The ECM was backing off the timing. After modifying the Sprak Advance tables, I was able to pick up about 4mph in trap speed. FYI. I would do a "before" and "after" and a scan.

02-18-2008	#10
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,686	Re: Watson Headers/Haibeck Chip I had a Marc Randolph chip in my car when I added Watson headers. I found that I needed to reduce the timing due to eliminate the knock retard. After putting the headers on, the trap speed didn't change. The ECM was backing off the timing. After modifying the Sprak Advance tables, I was able to pick up about 4mph in trap speed. FYI. I would do a "before" and "after" and a scan.