Diacom, and WOT

[Bruce Plecan]

-----Original Message-----
From: Espen Hilde <mwichstr at online.no>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Saturday, October 17, 1998 5:59 PM
Subject: Re: Diacom, and WOT


Well, I tried the filtering with hardware-I couldn't get that to work.
I'm more than sure the filtering for the P-4s is in the program
part of the prom.  
Bruce


>Maybe its possible to make a program in addition to the prom.A mapped
>damping 
>of map /maf reading.At certain rpms/ load strong pulses work in the inlet
>path together with reversion from big cams and maybe a fluttering
>wastegate.I know from
>my experiance it would have been nice to ajust the damping of map
>fluctations at
>idle and so on, but not sacrifice response at other mapped spots.My
>expiriance is with big injectors and wery short opening times , the engine
>can start to occilate,
>and not going steady at idle.Maybe going to a percentage of trottel
>possition at 
>certain map /maf points could stabilaise the efi system from occilating.
>aspiring for a cone shaped hat?
>I read something about a GM efi with both map and maf here earlier ,did
>they use 
>the best of both worlds? 
>Espen Hilde
>----------
>> From: Bruce Plecan <nacelp at bright.net>
>> To: diy_efi at efi332.eng.ohio-state.edu
>> Subject: Diacom, and WOT
>> Date: 17. oktober 1998 18:07
>> 
>> For the folks that have the Plus, I'd suggest doing this.  With
>> diacom running let the car idle for like a minute,  then do a 
>> WOT accleration to some safe MPH,  then coast down to
>> 15mph and stop.  Then do a light throttle cruise at say 50-55.
>> Make a duplicate of that, and file it away.
>>   What really looks strange, ie the grams/sec floating around,
>> seems to be normal, to a certain extent.  
>>   It also apprears that reversion might not only drive the MAF
>> high, but maybe low also.  Time will tell on this one, maybe if
>> I get some more big cammed P runs, we'll find out..
>> 
>> Again, I'd still like to see more 86-95 camaro, firebird, vette,
>> diacom recordings, perferably,  0-65+MPH acclerations,
>> idle, and light cruise.  Stock or modified engines, if mod,
>> please a short list of specs.
>> TIA
>> Bruce
>