Well, in the land of pink mushrooms and flying bananas, an ECU, a standalone or a piggyback would tune itself entirely alone. I'm not living in that world though. Yet.

OF COURSE the ECU needs to be tuned for the setup it's running! I NEVER said that it wouldn't need to! What I said is that I could make custom chips for almost any kind of setup and that the ECU has means to adjust itself to some extent.

Bah. I'm tired of answering those kinds of questions (which are not questions, but childish "hey d00d.... it won't werk!" arguments). If you have specific questions go ahead, but 'sides that, I'll start a new thread once I have new developments on my side.

That's what I like in the Hyundai community; there's so much encouragment and people are so grateful when you try to do something for them :roll:

 

okay well i read most of it, and i will be choosing to go with the Stand alone, but if u do get the ECU programing thing worked out with proof, and it is cheaper, then well i am game. :twisted:

 

HAHAHAHAHHAH thats the funniest things i've read on here EVER

 

I posted this over at EXD and i thought it would be relevant to some of the stuff we talked about here...

I was doing some reading in my supercharger book by Corky Bell.. and I found an interestin formula to calculate horsepower output based on boost levels..

Ok, this applies to roots style blowers like the alpine kit comes with.. I would also like to add that this is theoretical and the efficiency of the motor will change the output so this is just a guesstimate.

First, we need to determine the Pressure Ratio... to get this figure, simply divide your estimated maximum horse power by the current horse power.

ie.. if i want 200 hp , and i currenty have 135, the my pressure ratio is 200 / 135 = 1.48

now we have 1.48 total pressure, and that is .48 of an atmosphere above atmospheric pressure..

now, just do this formula and you have your answer....

boost = .48 x 14.7

a practical example similar to what we described above is

.48 x 14.7 = 7 psi of boost.

therefore, you will need at least 7 psi of boost to add 65 horse power.



lastly, This formula is incomplete because there is a second formula that needs to be used to account for thermal efficiency BUT it is a baseline that anyone can use for initial calculations.. for a more accurate measurement, you will want to add .24 to the initial pressure ratio to account for a non-intercooled roots blower..

so if we do the math again, then we will see that to get the same 65 hp increase we will need .72 x 14.7 = 10.5 psi of boost.



Thanks Corky Bell lol !

 

good stuff ford smile.gif

 

Sorry guys, after some research and calling A'pexi, you are all wrong

the SAFC-II WILL let you use a diffrent MAF and scale the signal to the ECU. of course you have to have the injectors larger to match... but most of us use larger injectors rather then the 5th injector series.

for you nay sayers... i scanned part of the instruction book that got me curious. YOu will notice they use an example of putting a Z32 MAF into a SR20DET *whatever the hell those cars/engines are*

how you can adjust the sensor IN number to scale to the sensor OUT number.

Calling A'Pexi, they said their Authorized installers have a list of what these sensor numbers correlate too, but you could also call the tech department with the specs of your maf *the lb/min to voltage ratio of incomming and outgoing maf* and they could give you numbers that were close.

SOOOO this puts the debate to rest, and answers my question

an SAFC CAN infact use a larger MAF and scale it for the ECU, thus you can go over the 250 or whatever limit of the stock MAF.

Cheers!

 

if your going through all that trouble..

and you still have to buy something to adjust timing..
your not that far away from a haltech price wise..

 

thats very interesting.... I wonder if anyone will try to do something like that?

 

hmmmmmm i may use a MAS from a DSM in this case... i didnt even think about that and i jsut read all that crap like last week when i installed it

 

DSMs use hertz for their reading for ecu we use volts