CLASS RACER FORUM - View Single Post - Any performance difference in Sunoco Purple?

Mike Croley · 02-25-2015, 02:21 PM

When going from a higher SG to a lower, you would increase the jet size 1 number for every .010 change. In your example you would increase jet size by 2 numbers.
As i said, this is a rule of thumb and assumes that your tune up was pretty close to begin with.

02-25-2015, 02:21 PM	#8
Mike Croley Member Join Date: Apr 2010 Posts: 182 Likes: 0 Liked 0 Times in 0 Posts	Re: Any performance difference in Sunoco Purple? When going from a higher SG to a lower, you would increase the jet size 1 number for every .010 change. In your example you would increase jet size by 2 numbers. As i said, this is a rule of thumb and assumes that your tune up was pretty close to begin with.