Optimal A/F ratio
I went with ATV's advice and went from 10's a/f with the suggested jet chart to 11.8. I would have gone a little bit more to 12.2 but I ran out of tuning time. This was spraying only 200 on a 2010 Camaro.
According to the jet chart I should be using a 46 fuel jet for a 200 shot but I am down to a 33 at 11.8 a/f. Maybe it is because I am using a dedicated fuel tank and the pressure does not drop.
I just hooked up a kit on the Silverado and will be seeking help dialing it in. I will be posting pics of the plugs for help with timing and fuel.
According to the jet chart I should be using a 46 fuel jet for a 200 shot but I am down to a 33 at 11.8 a/f. Maybe it is because I am using a dedicated fuel tank and the pressure does not drop.
I just hooked up a kit on the Silverado and will be seeking help dialing it in. I will be posting pics of the plugs for help with timing and fuel.
Thread Starter
Joined: Jan 2007
Posts: 11,941
Likes: 33
From: Conroe, Texas
Well, if i can get some more jets, i will lower the fuel, i do have a larger nitrous jet, so i guess that could work just as well as more fuel?
But, i swapped from a Vic Jr with a 4 hole 2 inch spacer that is like a HVH i made, car went 7.1 all motor, put the super vic on, no spacer, it went 7.2 and lost a MPH from 96 to 95, then i hit it with the gas and she went 7.0 at 101, LOL. The Centerforce DFX clutch cannot handle the nitrous!
But, i swapped from a Vic Jr with a 4 hole 2 inch spacer that is like a HVH i made, car went 7.1 all motor, put the super vic on, no spacer, it went 7.2 and lost a MPH from 96 to 95, then i hit it with the gas and she went 7.0 at 101, LOL. The Centerforce DFX clutch cannot handle the nitrous!
TECH Apprentice
Joined: Jan 2008
Posts: 366
Likes: 0
From: Gladstone, Queensland, Australia
Just make 1 change at a time, timing, then fuel, moving timing back could make it leaner if you have to much lead in it. Same as having not enough timing, motor will use the most fuel with the correct amount of lead. If u have marked the timing mark yourself there, it is def. a little over advanced but not much. But you have to chop it at wot to get a clear view.
Yep they do, just kind of pricey for my blood. I would like to try one tho someday. It just seems like it wouldn't give a very clear picture of what is going on?
http://www.nitrousoutlet.com/catalog...29§ion=152
http://www.nitrousoutlet.com/catalog...29§ion=152
Yep they do, just kind of pricey for my blood. I would like to try one tho someday. It just seems like it wouldn't give a very clear picture of what is going on?
http://www.nitrousoutlet.com/catalog...29§ion=152
http://www.nitrousoutlet.com/catalog...29§ion=152
http://www.amazon.com/CASE-Slimline-.../dp/B0011FJPM2
Just make 1 change at a time, timing, then fuel, moving timing back could make it leaner if you have to much lead in it. Same as having not enough timing, motor will use the most fuel with the correct amount of lead. If u have marked the timing mark yourself there, it is def. a little over advanced but not much. But you have to chop it at wot to get a clear view.
when reading plugs at the track i know obviously reading all 8 plugs is best, but would i be risking too much if i were to say read cyl 1 and cyl 8? hoping to head to the track in the next few weeks and plan to spray a 200 shot and want to make sure everything is good since i have had a habit in the past of not checking my plugs lol.
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Verdad Gallardo when reading plugs at the track i know obviously reading all 8 plugs is best, but would i be risking too much if i were to say read cyl 1 and cyl 8? hoping to head to the track in the next few weeks and plan to spray a 200 shot and want to make sure everything is good since i have had a habit in the past of not checking my plugs lol.
12.8 -13.0. here. Whatever afr your car makes the best power on motor. A lil more fuel on stock bottoms 12.0-12.5.
Here's a nice plug reader.
http://www.drmomotoscope.com/
Here's a nice plug reader.
http://www.drmomotoscope.com/
12.8 -13.0. here. Whatever afr your car makes the best power on motor. A lil more fuel on stock bottoms 12.0-12.5.
Here's a nice plug reader.
http://www.drmomotoscope.com/
Here's a nice plug reader.
http://www.drmomotoscope.com/
