CLASS RACER FORUM - View Single Post - EFI, Alpha-N vs Speed Density fueling Strategies

Tony Curcio · 03-08-2014, 10:40 PM

I can see how using a Speed Density map would get the last bit of performance on a heads up run, or in a no-breakout index class such as Comp.

But, if the afr is changing while going down track, doesn't that make it harder to predict an accurate dial in? Whether using a weather station formula, or one's own ratio of performance loss or gain per 100 feet altitude change, don't these calculations assume the afr is not being adjusted from run to run, let alone during the run?

03-08-2014, 10:40 PM	#2
Tony Curcio Member Join Date: Mar 2002 Location: West Chester, PA Posts: 271 Likes: 1 Liked 4 Times in 1 Post	Re: EFI, Alpha-N vs Speed Density fueling Strategies I can see how using a Speed Density map would get the last bit of performance on a heads up run, or in a no-breakout index class such as Comp. But, if the afr is changing while going down track, doesn't that make it harder to predict an accurate dial in? Whether using a weather station formula, or one's own ratio of performance loss or gain per 100 feet altitude change, don't these calculations assume the afr is not being adjusted from run to run, let alone during the run? __________________ Tony Curcio 1860 STK