Well good news, I have finally pulled my car out of the garage and started it up. It was a pretty damn good weekend because of that. It has been a work in progress for roughly 5 years or so. Mods are listed in my signature. It is basically a full port, borg warner S472, 890cc primaries, 1680cc secondaries, ect. The car started up really easy on a fresh rebuild with RA super seals and the car even idled at 1500 rpms within 15 minutes of the startup. The problem with the car is that if the car is given any gas what so ever it will die. I can't drive the car at all. I was going to put break in miles on the engine going down my grandparents driveway ( 1/3 mile long) but with the car dying like it does there is no way I can accomplish that. Timing should be on, I have stabbed the crank and double checked it. I was wondering if somebody can check my map to see how well it is setup for a full bridge with my mods and good enough for putting break in miles on it.

 

I'll look at your settings tomorrow, but without looking at them, the usual cause of the issue you're having is that accel enrichments need tuning. If it falls on its face when you give it throttle, usually it's because it's going lean, and you need to add some fuel for that accel rate in the accel tuning dialog. If you have a wideband O2 sensor/controller hooked up, that could help you figure out specifically what's going wrong.


Ken

 

If you get her idling at say 2000, will a bit of throttle application stall the engine? Do you have an O2 sensor installed so you can see what the AFR's are doing? Do you still have a 2-stage TB like the FC's had, so that opening the throttle a little will only feed air to some of the ports? My guess would be that its going very lean on tip-in, but I dont really have any data to support that

EDIT: Ken beat me to it

 

now im just getting started on all and i have no clue what im talking about so dont count on my advice lol. any ways i was looking at your ignition advance timing table it seams to jump up fast i could be wrong tho... but i think whats going on is your hitting those high timings and its making the car cut off. try to drop those #'s down and see if you can rev her up with out putting a load on it and start adding afterward....

 

I just took a look at your VE table and spark table. You need WAY more fuel. Your required fuel value is very low (5.3) which means that with VEs of only around 35 in the low load/idle area you are probably getting less then half the fuel the engine needs. Bridgeports need a LOT of fuel. For example, my small half bridge needs 2.5MS on 720CC primaries at 40 PSI fuel pressure just to idle at 13.5:1.

A few other random things....Your PWM warmup settings are weird. Try a cranking DC of 100, a low temp duty cycle of 60, an upper duty of 0.

You probably don't want to use MAPdot accel with a bridgeport. It will trigger all the time. Use TPSdot. Otherwise you will have to turn up the threshold so much to avoid false triggering that it will be useless.

More cranking injector is needed. 10 MS is a good place to start for all the bins and then fine tune it later. Bridgeports need a lot of fuel to start up.

You'll need a much higher KPA value for open loop mode, or use the TPS.

1 second is better for over run fuel cut and you should turn up the "RPM greater than" since the bridgeport probably idles around 1500.

You need to set up MAP-based as the 2nd injector stage parameter. Start with 90 KPA.