Originally Posted by associatedguy
I put 12 gallons of O'Donnell 30% through my V-Spec and switched to sidewinder 30% and honestly didn't notice that much of a difference. I didn't even have to change my needle settings. The fumes seemed alot worse than O'Donnell though.
I run a JP-Mod Vspec and that's what my 11 gallons of O'Donnell went through
I didn't need to switch to Sidewinder, because my motor always ran good with O'D. I didn't have to change my needles either, but it was posted earlier that it's a benefit of using Sidewinder. If you can lean your needles a bit for more power and run-time, and keep your temps under control, why not try it, if the fuel you run allows you to. This is my first gallon of SW, but after 6 tanks at the track this past Saturday, I noticed a big difference because I leaned my needles slightly
You say you didn't notice a difference in how your Vspec runs..Well that's not a surprise since you say you didn't adjust your carb to try and get better performance. One of the points made about Sidewinder in the other post, was that you can tune your engine for longer run-time, because of better protection in the fuel. Since you're using Sidewinder now, and if you race, you might as well try an adjustment and see how it works out for you.
BTW..Let your pitman deal with the fumes