Fuel Table question

Kdw1403 · 05-31-2017, 07:23 PM

Camaro lt1 stocker.supposedly really good heads, all top notch parts. fast xfi 2.0, timing at 36 degrees. My question is what should my top rows on my fuel table read at wot. These are my numbers. At 4000 rpm and go to 7500 rpm increasing in 500 rpm increments..130-158-186-196-190-188-186-177. Fuel pressure is 60 lbs Just new to fuel injection. In alpha N mode. I might should switch to speed density. some people say is less confusing. Is that true?

Nmbr1GMfan · 05-31-2017, 08:35 PM

Get a wideband and you'll know for sure.

Ed Wright · 05-31-2017, 09:08 PM

Should have come with a wideband. If you don't have one, you need a data logger so you can play a run back to see what your actual air/fuel ratio at each 500 RPM cel in the fuel table. I use the FAST internal data logger.
A given set of numbers in the fuel table won't be right for every LT1 Stocker. Different cams, injectors, fuel pressure, headers and cylinder heads.

In AlphaN mode, yours will be different in different weather, and at different elevations.

05-31-2017, 07:23 PM	#1
Kdw1403 Member Join Date: Nov 2016 Posts: 205 Likes: 48 Liked 68 Times in 22 Posts	Fuel Table question Camaro lt1 stocker.supposedly really good heads, all top notch parts. fast xfi 2.0, timing at 36 degrees. My question is what should my top rows on my fuel table read at wot. These are my numbers. At 4000 rpm and go to 7500 rpm increasing in 500 rpm increments..130-158-186-196-190-188-186-177. Fuel pressure is 60 lbs Just new to fuel injection. In alpha N mode. I might should switch to speed density. some people say is less confusing. Is that true?

05-31-2017, 08:35 PM	#2
Nmbr1GMfan VIP Member Join Date: Aug 2013 Posts: 1,763 Likes: 1,197 Liked 1,954 Times in 491 Posts	Re: Fuel Table question Get a wideband and you'll know for sure.

05-31-2017, 09:08 PM	#3
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Fuel Table question Should have come with a wideband. If you don't have one, you need a data logger so you can play a run back to see what your actual air/fuel ratio at each 500 RPM cel in the fuel table. I use the FAST internal data logger. A given set of numbers in the fuel table won't be right for every LT1 Stocker. Different cams, injectors, fuel pressure, headers and cylinder heads. In AlphaN mode, yours will be different in different weather, and at different elevations. __________________ Ed Wright 4156 SS/JA Last edited by Ed Wright; 05-31-2017 at 09:10 PM.