how to extend fuel maps in uberdata
 

ok well the fuel maps for uberdata only go up to like 9000 rpms. but what if you are revving higher? is there anyway to extend the table to allow for more rpms? i know there is with crome and its some plugin, but im not using crome. how do you do it with uberdata?

Re: how to extend fuel maps in uberdata
 

You can't. Not without rewriting the code.

Re: how to extend fuel maps in uberdata
 

so how does uberdata handle rpms above 9000?

Re: how to extend fuel maps in uberdata
 

It doesn't.

Re: how to extend fuel maps in uberdata
 

But Crome Does ;)

Re: how to extend fuel maps in uberdata
 

=P crome costs money!

I'd think he'd rather have a free prog that sucks, j/k

Re: how to extend fuel maps in uberdata
 

The plugin that adds the higher rev functionality is free, and is included with the free version of Crome. It's called "Rev Tools".

Re: how to extend fuel maps in uberdata
 

so what happens when i rev past 9k? does it just ue the same map from 9k for everything higher?

Re: how to extend fuel maps in uberdata
 

Yes.

Re: how to extend fuel maps in uberdata
 

i have read that it interpolates to some extent, but i dont know for sure

Re: how to extend fuel maps in uberdata
 

Rice lies. :P

Re: how to extend fuel maps in uberdata
 

I'm pretty sure if your engine can rev past 9000 rpm, you have enough green for a Standalone.

Re: how to extend fuel maps in uberdata
 

since when is uberdata/crome NOT standalone?

the plugin may be free, but what good does crome do me if i cant datalog? i dont exactly have the 150 to spare on the full version of crome. not right now anyway. i may spend it and get it eventualy, but for now ill stick to whats free.

Re: how to extend fuel maps in uberdata
 

datalog with EcuControl and tune with the free version of crome

Re: how to extend fuel maps in uberdata
 

what he said

Re: how to extend fuel maps in uberdata
 

man i think i may have to eventually pay the $150 and get crome pro. Its got so many nice features now :)

Re: how to extend fuel maps in uberdata
 

Since it still runs off of the stock computer. "Standalone" means self sufficient. Not relying on anything else. Ex: AEM EMS..

Re: how to extend fuel maps in uberdata
 

only the hardware. fuel/timing and pretty much anything is able to be changed. to me thats standalone. it certainly isnt a piggyback, as it doesnt alter the signals being fed to the ecu.

Re: how to extend fuel maps in uberdata
 

"Pretty much anything? Is that why you can run multiple injectors? Is that why you can have an ignition based rev cut? Is that why you can add multiple output for controlling boost controls, N2O, Water injection? ...is that why you have gay ass dual tables for VTEC? Is that why you can run 1600cc injectors? ...is that why you can run any distributor with any number of spline son the reluctor?

Wow, I guess Crome/Uberdata is more powerful than I thought. ::)


Ya, I guess it is standalone if you don't consider the use of 100% Honda hardware, and 95% Honda ROM code... ::)

Re: how to extend fuel maps in uberdata
 

burn!!!

Re: how to extend fuel maps in uberdata
 

owned :D

Re: how to extend fuel maps in uberdata
 

You modify the rpm scalars, and bingo bango UD supports 9K+.

Done it before.

Re: how to extend fuel maps in uberdata
 

why would you want to rev that high anyway

Re: how to extend fuel maps in uberdata
 

My B16 will be revving to 9500-9600... 13.2:1 compression with Skunk2 stage 3 cams and ITBs.. there is a need for it sometimes. ;)

...but like JD said, you have to mod the code. I haven't looked at UD for a while, Blake may have an interface for RPM scalars. You'd have to use the P72 codebase, as the P75 has an 8000 rpm limit. I don't know what the high cam limit is... I'll run the numbers, and let you all know.

Re: how to extend fuel maps in uberdata
 

yea my b18c will have something like 11.6:1 ish compression with skunk2 stage 2 cams. and the cams make power at 9k+ so ill utilize it.

no turbo here guys, lol.

if you could find out how to extend the maps that would be great. i assume what you mean about modding the code is that you will have to change the intervals between the rpms? or physically adding more tables?

Re: how to extend fuel maps in uberdata
 

Well, Honda made provisions in the map lookup routine that compares to an "RPM scalar". Basically, a number that disctates what rpm each row in the table is. Due to the scalar being an 8-bit number and the formulas used to change the human readable number into the correct 8-bit hex value, you're limited on the possibilities you have. 0x00 being the lowest, and 0xFF being the highest. I know on the low cam, and P75 ROMs, the max for 0xFF is 8000... the high cam will have a similar cap, but a little higher because of a different formula.

Now, you can mod those scalars to thier max, and it will still work within the realm of the stock Honda code. If you would want to go any higher, however, you would need to rewrite the table lookup routine to add more rows, or devise a different formula for the ECU to equate the human readable numbers, into a different measurement for the hex.

As far as I remember, Uberdata only lets you modify the STOCK rpm scalars... where as, Crome, has a plugin that rewrites the tables, and lets you get more RPMs out of the high cam...

Re: how to extend fuel maps in uberdata
 

...ya, it's what I thought..

High cam only goes to 8925... You'll have to mod the code for it to go any higher..
(35 * RPMScalar) = RPM for row

(35 * 0xFF) = 8925 ..(0xFF = 255 in Dec). So, what have we learned? I stated it in the second post of this thread. ::)