RE: 1227730 with 2 bar Map?

["Bob Wooten" <r71chevy@earthlink.net>]

I have been thinking about this as well & don't see any reason why this would not work.  if 0-5vdc was 0-1 bar is is not 0-2 bar.  this means though that you would have to redo all tables that have reference to vacuum (& now pressure) & the resolution of the sensor is now going to be 1/2 of what it was.  the only reason to mention this would be if you had a lump cam & it was going to be hard to tune in the first place.  I think that i have convinced myself that for the next car that i am just going to goto a CPU that has the accommodation for the 2 or 3 bar sensor built in & tweak from there.  I think that this would probably reduce the frustration.

 

FWIW

BW

----- Original Message -----

From: Dan Townsend

To: gmecm@diy-efi.org

Sent: 2/22/01 7:15:57 PM

Subject: 1227730 with 2 bar Map?

So I was curious and started reading what a 2 bar Map does.  Basically you

get the same voltage as a 1 bar Map but the readings are actually double.

So what would keep me from using a 2 bar Map but with the 730 ECM and 730

code but tune what the computer now sees as 50 KpA to actually be the real

100 KpA.  This would allow me to tune the setup to up to 14.7 lbs of boost.

Does this sound like I'm on the right track?  The only thing left is doing

the VE tables and spark Map.  This would leave me with all the functionality

as before.

 

Would I be better to drop what the computer thinks the injectors are so I

could keep away from 100+ % VE tables or would it work better to make it

think the engine is a 11.4 L or something like that?

 

DanT - Is this a good idea or time for me to put on the CSH?  :-)

 

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--- Bob Wooten

--- r71chevy@earthlink.net

--- www.r71camaro.homestead.com