My1st Truck

iTrader: (8)

I determined from a MAC scan tool my car runs lean after 4500 RPM, So I bougth I predator, but I am not sure how to read the fuel mixture on it or how much to add, any help is greatly appreciated.
Mike

WS6FirebirdTA00

iTrader: (33)

look at the o2 sensors, not the best way but better than nothing. you want them to be in the 890-910 mV range. you can go to the pe settings and add fuel, monitor for knock as well. its easy if someone rides with you. increase the PE vallue by 1% at a time to get where you want it. 1% is roughly 10 mV. i have a writeup i did on this thats ina sticky up top. lots of info in there on how to use the predator

My1st Truck

iTrader: (8)

Thanks, I don't have anyone to ride along tonight, but I added a simple 1% and before you could here it start to detonate way high up in the RPM now it dosen't do it. I will look at the numbers and maybe add some more. The car just has exhuast and lid and mere 20,000 miles on it, why it is lean. I don't know.

WS6FirebirdTA00

iTrader: (33)

might wanna add another percent to just be on the safe side until you can get someone to watch it. i had hard time finding people andjust learned the right time to fast glance at numbers lol (mainly knock)

My1st Truck

iTrader: (8)

I added another percent, so I am up to 2, at WOT my O2s were 930 to 940 and in WOT in thrid my spark retard was 3.9 at the highest. It seems to run a lot better. I will take it to the track friday to see.

WS6FirebirdTA00

iTrader: (33)

o2s are reading that high and still gettign knock? what is the wot timing at?

My1st Truck

iTrader: (8)

That is the WOT retard 3.9 in thrid gear.

WS6FirebirdTA00

iTrader: (33)

no im talking about actual timing advance not retard

My1st Truck

iTrader: (8)

Oh I see, I see If I can get that later today. I appreciate your help.

My1st Truck

iTrader: (8)

It seems that the actual timing advance is goes from 25 to 30 degress at WOT in 2nd and 3rd. The more I drove it seemed to settle out right at about 25 to 26. What do you think

ace68

iTrader: (15)

that's good timming, after I put a lid and catback on my fule leaned out a bit also that's what happens when you get it breating better.

WS6FirebirdTA00

iTrader: (33)

you prob might want to try and decrease the timing to get about 28-29* at WOT, it may be just enough to get it to ping, hard to tell though without more data ya know? but you gave us about everything you could

My1st Truck

iTrader: (8)

Thanks for all the help! I am going to hit the track on fiday and see if I get any MPH out this, then I may adjust it some more, while not the best tool for tuner the predator has been useful.

My1st Truck

iTrader: (8)

I added one degree at WOT today and the car now settles out right at 29 to 30 degrees advance, my O2s dropped off to 880, 890 so I added another percent to the fuel. I see what this does, what do you all think?

WS6FirebirdTA00

iTrader: (33)

as long as you dont get any KR you should be good