OFT Observation and concerns

[steve99]

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Originally Posted by n0thing

I just got the OFT, flashed to the newest Stg1 93 B01C map from openflash (no power mods on car) and immediately I noticed the vehicle bogging when driving from a standstill. With daily driving I normally rev to 1krpm and clutch out, but with the flash it drops to about 500rpm, the car bogs and feels like it's going to stall. It's much better now with your rom, thanks. I hope it's OK to use with my stock exhaust?

I'm planning to get Gruppes/OFH2 header later on. Do you know if their Stg2 93 uel or 2OFH tune files have a similar problem with load limit? I'm a complete newbie in software tuning so I've got lots of reading to do. Thanks

even doing the tricks the throttle will be a little laggy after flashing or reset


I think the load limits were set different in most usa roms, you can either fix the load limit or lean out the high load low rpm area of fuel table

if your bo1c stage1 then jist load the rom i posted a few post back in this thread will fix it.

unless your on the new openflash header specific tune theirs been no changes

yes with stage2 tune you will likely get same problem unless you make the load limit or fuel table chamges.

other changes to exhaust like overpipe catback dont require tune change.

its only the header change that tequires tune change

or intake change, filter change is ok

[n0thing]

k&n filter, gruppes uel + op, stock fp, magnaflow catback


I have loaded up stg2 uel 93 oft tune (b01c) with load fix from an a01g rom. is there any downside to this? less power <3k rpm? makes me wonder why the developer had the usa roms setup differently

[steve99]

Originally Posted by n0thing

k&n filter, gruppes uel + op, stock fp, magnaflow catback


I have loaded up stg2 uel 93 oft tune (b01c) with load fix from an a01g rom. is there any downside to this? less power <3k rpm? makes me wonder why the developer had the usa roms setup differently

likely a typo or oversight.


The load limit stop the ecu looking up rearly rich fueling and rearly retarded timing if you go WOT at low rpm.


for some reason the set the load limits rearly high in some usa roms only.


all the other roms use the same load limits as stock roms.


alternatively you could lean the fuel tables and reduce the retard in timing tables at low rpm high load, its just easier to set the load limits back to sane values