DIY_EFI Digest V1 #180

[WERNER_HAUSSMANN at HP-Loveland-om2.om.hp.com]

Yes, I second that.

You really don't know what to expect by mixing the Bosch Air Meter with the 
Nissan ECU. Better to 'fix' what you have, or if it is not broken, then I 
am sure you can modify it to have it operate better.

First thing to do is to measure the AF mixture with the air pump 
disconnected.  If it is too rich you will know you can make it better.


Werner


______________________________ Reply Separator _________________________________
Subject: Re: DIY_EFI Digest V1 #180
Author:  Non-HP-owner-diy-efi (owner-diy_efi at coulomb.eng.ohio-state.edu) at 
HP-ColSprings,mimegw2
Date:    6/26/96 6:08 AM


My bet would be it would be far easier to fix the system on the BMW. 
My 81 bmw 745i I believe is analog, l system, has approx 185 rear
wheel horsepower(chassis dyno) and gets 18mpg+.(unless I mash it, which 
I can't do for long)


>         Re: 280ZX ECU in '78 BMW
>         Re: Looking for Cadillac Error Codes 
>         Re: OEM CONTROLLERS Intel 8051?
>         [none]
>         Re:

> So, I need to do something.  My options are to try to monkey with the 
> L-Jet that is in there and see if I can improve things, trial and
> error, or to start over and replace the entire ECU and harness.
> Nobody says I have to run this thing in a closed loop if I put the
> Nissan ECU in there.  My bet is that the ECU from the 280ZX is tuned 
> to run the car maybe a hair rich based upon the input from the AFM,
> TPS and O2 sennsor.  So, seems like if I tune the AFM and perhaps the 
> fuel pressure with the Nissan computer then I should be in good
> shape, eh?  Maybe just an adjustable pressure regulator is what I 
> need.  This must be better to make broad-band changes in the fuel 
> curve than AFM mucking.
> 
> Later-
> _____________________________________________________________________________ 
> Josh Karnes                                                 joshk at tanisys.com