a couple days ago i logged a WOT run with both EBL and WB02.

this is what i saw in EBL datalog.

in first gear hard accelleration. at 3600 rpms DC 139%. PW 7.3 msec.
21 deg SA. NB02 885 mvolts.

shifted at 5800 rpms.

in second gear at 4000 rpms 144% DC. PW 7.3 msec. 22 deg SA. NB02 889 mvolts. car runs to 5800 rpms in third of 5 gears. pulls hard.

WB02 log i have not looked at since my battery crapped out. I suspect lean.

a seperate note i did have issues with very fat fuel tables that i caused in my EBL.bin. engine "broke up" at onset of harder AE and cleared out into PE after the nasty event. in areas where i could not log(higher MAP) they were way overly rich. i manually pulled out considerable fuel and that seems to have cleaned up the engine response.

now i am running 145 BPC with 350 cid 20.5 lbs FP 80 lbs inj(confirmed #2560). i had to raise the BPC since i was 100 for VE values around 2800-3000 rpms and 35-45 MAP. does that add up?

both injectors firing. possible clogged fuel filter?

 

I would raise the fuel pressure and then re-calculate BPC to a correct value. BPC should not be changed to compensate for anything except fuel pressure, engine size, and injector differences or at least that is what I have been lead to believe.

 

i did have the calc done for BPC correctly for FP(23.5)-CID(350)- INJ SIZE(80 lbs). that caused the VE to exceed 100 in too many places. only option was to raise the BPC 5 ticks at a time to get the tables under 100 after a VE Learn. I dont believe the VE LEARN works over 100. the reason i dropped FP to 20.5 is that it should be adequate to fuel my engine with mods i have.

maybe i will need to do just that raise it back to 23.5 or follow Dominics advise and tune with VAFPR and start all over with VE LEARN. trying to hold off on that and rule out mechanical.

 

aluminum heads....check
nice size cam.....check
suporting bolt ons....check


Yeah you'll need more than 20 psi to fuel that beast, you have a 400 hp motor on your hands if you get it tuned correctly. I would deffinately get your WB up and running before you try any more WOT logs, don't want to splatter your pistons all over those nice heads.

 

Like BM said, you've got a nice 400hp motor, give it what it needs. If the VE exceeds 100 it wants a lot more fuel, especially with duty cycles like you've got. Go ahead and tune for the VAFPR since you have to re-do fueling anyways. Don't be afraid to raise the pressure, though if you put it too high as long as it isn't horribly so you can always drop the VE tables way down, not a big deal. As long as your duty cycle at WOT isn't more than 85% your fuel pressure doesn't matter.

 

Bump the fuel pressure to about 25 PSI, hook up your VAFPR, then rescale you BPWC settings. You might also look into using Asynch fuel mode. I found that it really helps keep the fuel flowing. I have run 100% DC in Asynch mode with a mild 350, and 4.3 injectors at 20 psi. The wideband was pointing right at 12.6:1, even as high as 5,500 rpm.

 

FAST: i just flipped to forced "synch" to help control idle. it would move from synch to asynch after heat soaked and then the fuel is cut off and stall saver brings it back. i have to check my ronebl.bin on that in that it may only be forced at idle. will review Dominic comments to me on that.

so i should revisit that ebl-log and confirm where the 100+% DC exists it was in fact "synch".

off hand is it possible to only run "synch" at idle? i am at office and cannot check till this evening.

it all points to VAFPR. i would just like to get this running decently so i can compare pre EBL drivability to EBL non-vafpr to ebl-vafpr.

 

I do it all the time. Don't run asych at all. My DC% at WOT is 75 and that's with 80# injectors at 20psi. I think our motors are probably on par as far as power is concerned.

 

then i must be synch all the time as i "compared" to that bin you sent me.

raining again. no logging tonight.