RE familia turbo..

Warren Crowther warren at hypercom.co.nz
Thu Nov 16 20:26:06 GMT 1995


>
>>> is it worth
>>> the trouble of developing such a system for the performance gain of removing
>>> the maf restriction in a 1600 turbo???
>>
>>Debatable. Might only be worth 5-10hp (at a guess).

>If that is the only change you are making to the engine I wouldn't bother.
>It would be very worthwhile though if you plan to up the boost/chg turbo etc.
>I have a 323GTX on which I have an Elctromotive Tec2. I've tried different
>turbos on the engine and just reprogram as necessary.

i've also put a 2 1/2 inch exhaust from the turbo, and increased the boost
to approx. 15 lbs.  I have an aftermarket chip in the computer also, but i'm
still experiencing (suspected) lean-out at about 5500 rpm.  this is really
pissing me off, because the car should be happy to rev right to the redline,
instead of only 3 1/2 to 5 1/2 thou rpm.  

i've heard that the standard ecu (b660), even with 'hot' chips hits a
maximum injector on time that can't be increased, hence the 'hot' chips
don't do much.  does anyone know about this??  i want this maf replacement
box to send higher air flow readings at high rpm, fooling the ecu, to solve
this lean-out problem. But if the standard ecu hits a maximum injector
on-time, then this is useless!!  in this case, the black box could control
an auxiliary injector.  alternatively, could i just increase the fuel
pressure, and tune the black box to send lower than actual air flow readings
to the standard ecu??

what turbo do you use?? what is different about it in relation to the
standard one?? (i don't know too much about turbos!) and what boost are you
using??

thanks!
---------------------------------------------------------------
Warren Crowther     yeeehaaa!   O     
Software Engineer            ##\\-/_,     Mobile  (025) 870-155
warren at hypercom.co.nz        -O----O-'    Ph  +649 3602834 x613
Hypercom Communication Technologies       Fax +649 3602840 
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