jmill96Z

iTrader: (3)

Need a little help with doing a couple basic things for a nitrous tune with EFI Live. I'm looking to pull 2-4 degrees of timing, so far I pulled it from the low octane and the high octane tables, are there any more?

I would also like to add about 5% fuel to the tune at WOT. I've been looking around the tables and nothing is looking really familiar to me. Any help would be greatly appreciated.

Jeremy

2002_Z28_Six_Speed

iTrader: (19)

I would say don't pull the 4 degrees from the whole map. Only .6 grams/cylinder and higher AND 3000 RPM and higher. This way it won't take longer to get up to that range.

You would add more fuel by changing the PE numbers to be more rich under the PE v RPM parameter. (engine cal->fuel->mixture->) I tuned my PE only to come in under WOT ie when the nitrous is on. And check that with a wideband sensor after your runs. Don't add to the VE table.

Maybe someone else can give a more professional tip but that is basically how I fine tuned my kit. I'm no species of genious but I get along.

jmill96Z

iTrader: (3)

I did only pull the timing from .6 to 1.0, and 3k to 8k. Are those the only 2 places that you adjust?

So PE only on the fuel?

Doc

iTrader: (9)

Why not run COS#5 and have the best of both worlds NA/N20 at the flip of a switch?

98redorangeta

iTrader: (10)

If you have a 99+ pcm a custom operating system like doc said isnt a bad idea. PE isnt the only place to add fuel but it is probably the best for what your doing right now.

jmill96Z

iTrader: (3)

I'm running my 98 PCM right now just to try and keep things somewhat simple. Once I get this stuff figured out I plan on upgrading to a 99+ PCM. The race season is just too short here in Alaska to make major changes mid summer. I do most of my work in the winter.

98redorangeta

iTrader: (10)

Is this a wet shot or dry shot?

jmill96Z

iTrader: (3)

Wet dual nozzle kit

jmill96Z

iTrader: (3)

So if my pe table reads .87 all the way, would I lower the # to richen it up?

98redorangeta

iTrader: (10)

Just go into the tuning tool and go to EDIT>>PROPERTIES>>then go to the comanded fuel values and change it from EQ ratio to AFR then you dont have to second gess your self you know what will make it richer.

2002_Z28_Six_Speed

iTrader: (19)

To understand the .87 PE value, simply mutliply the starting ratio 14.63 times the modifier

.87ModifierNumber*14.63StoichRatio ---> 12.7AirFuelRatio

If you wanted to run 12:1airfuelratio
12AirFuelRatio/14.63StoichRatio ---> .82ModifierNumber


So yes. Making it a lower number like .85 would make it richer. You when you play with the PE number yes you are fudging but that is the easiest way to do this without getting too involved until you are ready to start tuning on it.

The proper way is to tune the VE is without the MAF and then go back and tune the MAF OR just leave the MAF out and tune the VE alone.

jmill96Z

iTrader: (3)

You guys are the ****. I really appreciate yall breaking it down into retarded mode for me. Hopefully I'll be able to play with the car tonight and do a little testing.

zmonsterjb

iTrader: (16)

why add fuel to the pe table if you have fuel coming out of the nozzel? As i understand it you only add change the pe table if it is a dry shot!

2002_Z28_Six_Speed

iTrader: (19)

That is 100% true. With my kit it was always very rich. Maybe to cover the nitrous company's 6. So with PE fudging let me fine tune for the ratio I wanted.

zmonsterjb

iTrader: (16)

make sense,so to lean it out a little