[Diy_efi] Re: MEMCAL Swap

[Tyler Townsley]

If you look at a 90-95 ZR1 Corvette (LT5) bin it will give you a sense 
of what is going on. I know one of the ex Lotus calibration engineers 
who worked on these setups which included a twin turbo LT 5 version 
called CRV 3.  The lt5 is a sequential system that uses the timing in 
the DIS to control both spark and fuel. It is a rather sophisticated 
system for instance it has 16 injectors. The bin has fuel and spark maps 
for 8 and 16 injector operation. When it goes WOT the calibration halves 
the PW of the on line injectors and brings in the other set at that 
level. I have a friend who looked at the Lotus Carleton code and found a 
lot of similarities. You might ask the guys at CATS if they have done 
anything on the bin.

Tyler

Lee M. Lemoine wrote:

>I'd have to see a picture of the lotus fuel injection system, got any
>links?   Either way, i'd say your on target -- i just don't know how
>it activates this 'second bank' you speak of.  As long as the ECM is
>either providing a positive or ground trigger, you could trip a relay
>to power the injectors as required...
>
>On 7/27/05, Joel <difo8778 at kettering.edu> wrote:
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>
>>I'm considering using the pin outs from the Lotus and wiring
>>my harness to it.  (I have a spare harness, and the ECM is
>>easy to come by from GM).  I'm in the process of ordering the
>>EPROM.
>>
>>If I do that, I can wire the 2 extra injectors before the
>>throttle body (Just like the lotus).
>>
>>The Lotus uses almost the exact T3 that I have for my setup.
>>It also produces about the same power output that I'm looking
>>for (290 hp at about 1 bar of boost).
>>
>>With similar power outputs and displacement the fuel
>>shouldn't need too much tweaking.  I would just need to mess
>>with the tables to account for a little less duration, and a
>>little more lift.
>>
>>What do you think about that?
>>
>>-Joel
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