OK, this may just be late night brain fart-so feel free to tell me I'm out in left field....
First off the sy ty isn't an option for me due to smog controls.
And now that the really hot weather is here that maf has real problems with heat next to the sc!
So...it is time for the swap....
Now as I understand it? Some folk have "halfed" the ve table to make it function for a 2 bar-but had problems with idle/lower kpa-wether due to calcs/lowered resolution?
Now here's the late night "thought"....since I'm only running 5lbs of boost-not 14.7 of full 2 bar-what about just "3/4ing" the top 1/4 of the ve tables.......thereby avoiding lower kpa/idle problems and still controlling without an fmu....resolution loss would be minimal?
If it is doable, I realize it would still be a "patch job", but better than the present...
Also could the same be applied to the spark tables then....
Thanks for any input!

 

Why not run the 8D code for smog purposes, and then the 58 the rest of the time?.

The only patch I know of for any different MAP options is for running a 3 bar on a Sy.

One big item is having enough injector for not needing an FMU.

There are alot of cars that just hammer the fuel and timing at the 100 K/Pa entries and let that carry them the rest of the way.

On my car it's at 10 PSI when I start having to throw alot of fuel at it.

 

OK, 8D and 58...but the pinouts are not the same? Would have to repin each time???
30lb inj. now-would have to wait and see on that....
And the way I was thinking last night-without a software patch-voltage between 1 bar and 2 bar map wouldn't let it work...!?
So then it would be 1/2ing the whole ve and spark table-I know some folk have done that on the 8D and the 808-how did it work out?????
OK-had my coffee now-been reading further back thru the archives here-deciding to go 730, since low boost con't to use cartechs fmu which has a second adjustment to add fueling press. at the transitional zero vac. point as it's been working out fine so far....
timing at boost....been using water inj.......
But I'm still really curious if anyone has succesfully rescaled ve tables etc. for 2 bar map in the 730...
And would any repinning be required to go back and forth 8D to 58?
Would be nice to just swap proms for smog checks!!!

 

A lot of loops and things you can't see in TC rely on map voltage calculations. Simply halfing the tables doesn't work.

Plus, as others have pointed out in the past you lose resolution when you use a 2 baro map for < 100kpa driving.

I'm working on a 2-map sensor $8D bin.