ZR-1 Net Registry Forums - View Single Post - Did you eliminate your Secondary Throttle Vacuum System?

XfireZ51 · 11-19-2017

I think your perception of better performance has more to do w a custom tune
than any other factor.

11-19-2017	#13
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,685	Re: Did you eliminate your Secondary Throttle Vacuum System? I think your perception of better performance has more to do w a custom tune than any other factor.