emtcee

i have a few questions about accell dfi v6.32.i want to setup a baseline for my motor.i know i can go into the global function under utilities but there r a few questions i don't understand once i'm in there, it asks for these:

1)rpm @peak horsepower(rpm)?
2)rpm @peak torque(rpm)
3)base fuel map rpmcell width(rpm) i think 8i shoul input 350rpm here but i'm not sure)
4)it asks for fuel pressure, should i put 45psi?

i have read the maual that came with it and also purchased a seperate book but i am still unsure on these questions so any and all help would be appreciated.here r my motor specs:
383 bottom end
lingenfelter base, slp runners,ported plenum
58mm tb
30lb injectors
comp cams (duration 224I 230EX) (lift .503I .510EX)

please help if u can....

FAST LiFE

iTrader: (3)

When I use the GLOBAL function to develop a fuel map, I find that CALMAP tends to run a little on the rich side. So, you want to be a little conservative with the horsepower/torque numbers.
You’ll want to run rear wheel horsepower/torque numbers instead of flywheel numbers. Start on the low side (300/360?) as far HP/torque numbers. It’s ok to be a little lean/rich when idling or at low RPM cruise. Then increase/decrease the fuel map a couple percent till you get the motor idling a little decent. You just don’t want to be bellowing black smoke.
You can also use WARMUP ENRICHMENT to see if the motor wants more or less fuel by adding or subtracting the numerical value at which the engine temp is currently running at. Once you find a magic number at which the engine likes, zero out the WARMUP ENRICHMENT value you just put in, go into the BASE FUEL MAP and make the corresponding change.
With the TPI long tube setup you’re running, I’d guess peak HP happening around 5600 RPM (depending on whether there was porting, siamesing the runners more, etc). Peak torque I’d guess at 3000 RPM.
When you start tuning, you want to work on lower RPM (idle to cruising speed) steady state tuning. So you want to set up the cell width for that. The lower the number, the lower the cell table will be configured at. The lower speed range of this map value will allow you to concentrate tune in that area. Once steady state idle to cruise is tuned, increase the fuel cell map value till you get to your max RPM speed.
Fuel pressure should be set at what ever you set your fuel pressure regulator at (assuming you’re using and adjustable one). So if it’s set at 45psi, you configure CALMAP for that. Now some injectors like Ford SVO run at around 37 or 39psi. If you’re running Ford SVO 30lb injectors at say 45psi, the injector value you want to input is 33lb at 45psi.

emtcee

wow, thanks FAST LiFE.but i still really don't understand those questions i asked,maybe someone can elaborate.i'm trying to learn as much as i can.thanks again...

FAST LiFE

iTrader: (3)

The UTILITIES feature in GLOBAL needs to know some parameters of your engine to create a fuel map. How much peak horse power you're making and at what RPM is it happening at. How much peak torque your engine is making and at what RPM. Going by your engine you need to "guess-ti-mate" (guess or estimate) what your engine is running or possibly consult your engine builder.

1) When the UTILITIES prompts you for how much horse power your egine will be making and when it asks for RPM, it means at what RPM it will be making that horse power at. So, with your engine combination, figure around 300, or what ever you think your HP is, for horsepower to input to CALPMAP. When it asks for RPM, figure around 5600 RPM.

2) When UTILITES prompts you for how much torque your engine will make and when it asks for RPM, it means at what RPM it will be making that torque at. So, with your combination, figure 360, or what ever you think your torque is, for torque. When it asks for RPM, figure around 3000 RPM.

3) For BASE FUEL MAP width, yes 350 is fine to enter. Using a value of 350 for the BFM width will keep the map range you'll see between idle to 4500 RPM. That's all you really need to look at for now since you want to start tuning lower RPM speeds first. Later on when low speed RPM tuning is getting pretty close to being dialed in, change the BASE FUEL MAP width to say 400 - 450 to extend the map range to above 6000 RPM so you can tune WOT.

4) CALMAP is asking what pressure your fuel regulator is set at. What fuel pressure do you measure at your fuel regulator? Get a fuel pressure gauge and measure it. If your fuel pressure is at 45, then you put 45 in CALMAP. If it says 42, then you put 42 in CALMAP.

I can't really break your questions down any more simple than that. What exactly are you asking? What those prompts mean when CALMAP asks you about horsepower, torque, RPM? Or are you asking for an exact number for what horsepower, torque and at what RPM your engine will make so you can input that in CALMAP?

emtcee

thanks FAST LiFE, thats exactly what i needed to know........

emtcee

by the way, i used desktop dyno 2000 for my numbers.it says 419hp@5000 rpm and 505@3500rpm.now, i know this program is optimistic but i figure approx 350 hp and 430ftlb of torque.again this is an approximation.also i failed to mention i am using a set of afr 195cc heads......thanks again FAST LiFE, i really appreciate it.

FAST LiFE

iTrader: (3)

Desktop Dyno I believe gives you flywheel horsepoewr. You want to use rear wheel horsepower numbers which are usually around 15% less from actual flywheel numbers.