Lean Idle Issues with Split Second AFC

[HondaEat-R]

Just reading threw this and im trying to understand why people use the piggyback setups with a learning ecu? I come from the ford side of the world and piggybacks dont work on the ecu because it corrects what ever the piggyback tried to change. Im new to mazda world still and not really digged to much into whats out there for the ecu control. I know fords have the sct xcal's. They give you full controll of the entire ecu to reporgram it from ground up with no cutting or splicing of wires. Do we just not have somethen like that?

Also not trying to sound like a dick bag in this just wondering.

Buy me a Haltech, and I'll run it. Otherwise, most of the "real world" is on some sort of budget, where they can't blow $1,600 on buying / tuning a standalone EMS that their T25 boosted car doesn't need.

 

[yudkib]

fords have the sct xcal's

i had a pontiac before, from what i remember a buddy of mine had something similar to the xcal... that thing was great. plugged it in clicked a few things and poof spark advance. it was magic, i just assumed all cars were like that. not the msp though...
"oops."

 

[43975]

To add to this a bit:
I've been running a split second and since it's install I've had a P0171 Code= lean in bank one. When I turn the CEL off by reseting the ECU I would get a rough idle and stumble at idle. But would run great with the CEL on.
We thought it was EGR, Vac leak, Coils...everything but the Split second itself. Well I finally said **** it and removed the Split second as my last stitched attempt to fix this CEL issue since now I have to pass emmisions to get my plates renewed.
Well the system is just about done checking the system and no cel and perfect idle. the only sensor left is the EVAP. Usually the CEL would pop on after the Catalyst or O2 sensor test, they have been clearing together so I couldn't tell which one.
It looks like the Split Second is the cause of the lean idle and rough idle.
Mine had a great tune too, so what are we missing here?

 

[justanothermp5]

could be alot of stuff, go through the map and check the low rpm range and see if there are any weird numbers
then try checking through the options menu

if its not that, i think it could be the spark plugs, heard that solves alot of problem

 

[43975]

plugs are new.