tricking the stock ecu
Guest
Posts: n/a
tricking the stock ecu
hi all, ive been driving my car for a while and i am having the learning ecu problems typical with a piggyback computer. heres what i have
93 subaru legacy 5sp 2wd
2.2l normally aspirated engine
11-1 compression ratio ceramic coated pistons
torque cams
ported and polished heads
255lph fuel pump
370 cc injectors
safc-2
colder range plugs
running 93 octane
the problem i am having is that the ecu is learning around my settings in the safc. i am finding that the ecu likes to make the car run richer than i want. now heres the question:
if i disconnect the o2 sensor from the stock computer would this prevent the ecu form making changes based on the o2 sensor?
what i am thinking is that the safc will then be more useful because the factory computer should eventaully quit adjusting...
any takers? has anyone figured out a way to trick the ecu into not learning? maybe wiring the ecu to lose power with the ignition?
lemme know what u guys think
joshmould
93 subaru legacy 5sp 2wd
2.2l normally aspirated engine
11-1 compression ratio ceramic coated pistons
torque cams
ported and polished heads
255lph fuel pump
370 cc injectors
safc-2
colder range plugs
running 93 octane
the problem i am having is that the ecu is learning around my settings in the safc. i am finding that the ecu likes to make the car run richer than i want. now heres the question:
if i disconnect the o2 sensor from the stock computer would this prevent the ecu form making changes based on the o2 sensor?
what i am thinking is that the safc will then be more useful because the factory computer should eventaully quit adjusting...
any takers? has anyone figured out a way to trick the ecu into not learning? maybe wiring the ecu to lose power with the ignition?
lemme know what u guys think
joshmould
Guest
Posts: n/a
yeah, i might just try that, the above post was a bit of a ramble. i put a spacer under my knock sensor recently and it runs pretty good now. im still keepin it rich tho...
joshmould
*edit*
also, what code did your ecu throw w/the cel?
joshmould
*edit*
also, what code did your ecu throw w/the cel?
Last edited by fast legacy; Nov 22, 2003 at 11:47 PM.
Big Baller
iTrader: (1)
Joined: Nov 2002
Posts: 1,821
From: Washington
Car Info: 93 BG5, 00&01 GM6, 06LGT, 07STi
disconnecting your O2 sensor is a bad idea.
You'll run even worse I promise.
Dump the SAFC.
get an adjustable or programable map sensor.
Your problem is the bigger injectors.
So if you run a split second FTC1 or something like that you can program your map in a way that the computer will not fight or learn around.
You'll run even worse I promise.
Dump the SAFC.
get an adjustable or programable map sensor.
Your problem is the bigger injectors.
So if you run a split second FTC1 or something like that you can program your map in a way that the computer will not fight or learn around.
BanHammer™
iTrader: (8)
Joined: May 2000
Posts: 47,596
From: Wagonmafia Propaganda Lieutenant
Car Info: 2014 Forester XT
I would think that the ECU learning would help you rather then harm.
also, you sure your ECU in that car learns ? I was under the impression that only OBDII cars were capable of that
also, you sure your ECU in that car learns ? I was under the impression that only OBDII cars were capable of that
Thread
Thread Starter
Forum
Replies
Last Post
FostersAFB
Used Aftermarket Car Parts For Sale
2
Sep 8, 2004 04:04 PM