Okay, here is my question.

I have a stock airbox mod, dp, mp, cb (2.75 in gaskets till I get my new ones).

The maps posted at This Web Site say the base map that I have is for an "Mods: Intake | Downpipe | Hi-flow Cat | Catback | Intercooler". There are a few maps on the website that compare to mine but there are a few differences.

The GoodfellaFD3S map is the same as my mods except he has a Street Port.

The Pedro Monson map is the same as my mods except he has an intercooler.

The Spyfish007 map is the same as my mods except his motor is ported.

My question is which one of these maps should I go with until I can get my wideband and check my A/F ratios? Right now I have the PFC tuned to 10 psi to be safe. I should be safe with the Base Mod map and staying under 10 psi, right? Anyway, thanks for the help. I can afford a wideband and Datalogit , but not a new motor right now. Plus I would like to learn to tune myself so I don't have to pay someone 300 bucks everytime I make a change to my car. Thanks a lot for the help guys.

 

i would prefare to get it tuned, i would only dream of a tuner in my country its deppressing, i would pay good money for a tuner in malta

take my advice and pay what is needed to get it tuned its better than slowly damaging your engine ?????????? to much fuel and the seal will get clogged, to lean you can break a apex seal driving slowly??????? i

I ve got the same mods as you and i used goodfellaFD3S maps, it drives better but it knocks like hell im going to tune it my self just trying to twik goodfellaFD3S map and hope it will work out for me ?

 

All you need to do is add more fuel for boosted areas
over 10psi boost. Start in the PIM voltage map and add fuel until you can AFR tune by the ing correction map.

 

I knew you would respond cewrx7r1. Thanks for helping us out. It seems once people get their PFC's set they don't browse the forum or something.

You got any suggestions on how much to add? If it currently is at 133 go up to 135 and that would increase my fuel? I saw your post about a 6% increase in horsepower so add 6% fuel. Does that hold true? I just want to be safe until I get the wideband. I will probably get it next month, although PLX Devices are backed up on orders.

 

I would use the PIM voltage map for a broad range of adding fuel first. Like maybe 5%. Then when to have access to a wideband and datalogit you can adjust them to get ball park. Then take that ball park(lets say you need only +4%), remove the PIM 4% to 0, and change the affected inj corr map cells by +4. Thus a 133 would be 137. Then rerun/log and work on differnt rows and columns. Tune at 12 psi and do those cells first.

After that, jump to 14PSI and do those cells.

With a datalogit doing a recalc make it easier, because the next time all cells are at 100.


The max you can enter on a cell is 149, but if you recalc,
it takes thta value and changes the base map and resets the cell to 100. Then you can add more fuel.
Without the datalogit, if a cells at 149 were too lean, you had to use the PIM maps to add more fuel.

 

So for each cell above 10 psi of boost I would add 5%. For example if the cell for 12psi boost and 5k rpms is currently 145 I would change it to 152 to add 5% more fuel? Would I want to add more fuel to the map below 10 psi or do you think that is safe? Thank you very much for your help with this.

 

hey Volley1
i have the same mods
as soon as you have done it please post your map!
that would be nice also for Power_put
thanx

 

I will. Basically what I am going to do is get a MityVac pump and map out what the PIM voltage is for each psi and vacuum. Then add 5% more fuel from 10 psi up. I will probably get it done this weekend.

 

I believe cewrx7r1 has posted the pim voltages. He was comparing the differences in readings between the commander and his guage for various boost levels. I too did this same test, but did not record PIM voltages. I did notice that the PFC vs the boost guage readings were different under boost (while driving) vs the static test with the Mityvac..why I don't know.

I seem to recall that cewrx7r1 may have even shot some video of the commander and guage readings while driving under boost