Calibration - Vtec engine
Posted: Wed Jun 17, 2015 8:59 am
Hi everyone,
At the beginnig I'd like to present my ride which is Civic '94 with swaped and turbocharged B18C4. s300 onboard of course.
I'm approaching to start calibration that is why i have some doubts. My question relates to calibration (of both fuel & ignition tables) around VTEC point.
The problem is I don't realy get or at least something works wrong compating to what I expected.
Let me describe first how I understand the thing and then I'll point my doubts. I would appreciate if someone could correct me if I'm wrong or explain some things.
Everything I mention concern S-Manager s300 Hondata ECU:
1. TABLES: There are 2 maps/tables available for each parameter (ignition&fuel) independently for "low&high speed). Low is the cam possition before VTEC point, high is above (right?). I should calibrate both first maps for low speed cam and independently both second maps for high speed cam?
2. PARAMETERS/VTEC: Thisi is where I set the rpm point (with some additional conditions if I want) when the VTEC selenoid engage and change camshaft characteristics (right?)
3. PARAMETERS/Secondary Tables: This is where I define when the tables (fuel & ignition) switch (?) - meaning when the ecu use first table's data and when the secondary tables(?). What it is it for? Isn't it enough that I set my VTEC point?
And now strait to the point...
I set in:
PARAMETERS/VTEC
VTEC - enabled
Lower=Upper=3000rpm
Min throtlte at 30%
Min speed at 0
Min temp at 65 deg C.
PARAMETERS/Secondary Tables
Always enabled
Engine speed 3000-12500 rpm
Engine load at 0-5 bar
Throttle at 0
I expected that whenever I reach 3000rpm the tables (in TABLES view) will switch and the engine will work on secondary tables (even if the engine load is 0) whereas it stays at first maps all the time. How can I calibrate columns 2-5 if I don't get lambda readings for secondary tables?
At the beginnig I'd like to present my ride which is Civic '94 with swaped and turbocharged B18C4. s300 onboard of course.
I'm approaching to start calibration that is why i have some doubts. My question relates to calibration (of both fuel & ignition tables) around VTEC point.
The problem is I don't realy get or at least something works wrong compating to what I expected.
Let me describe first how I understand the thing and then I'll point my doubts. I would appreciate if someone could correct me if I'm wrong or explain some things.
Everything I mention concern S-Manager s300 Hondata ECU:
1. TABLES: There are 2 maps/tables available for each parameter (ignition&fuel) independently for "low&high speed). Low is the cam possition before VTEC point, high is above (right?). I should calibrate both first maps for low speed cam and independently both second maps for high speed cam?
2. PARAMETERS/VTEC: Thisi is where I set the rpm point (with some additional conditions if I want) when the VTEC selenoid engage and change camshaft characteristics (right?)
3. PARAMETERS/Secondary Tables: This is where I define when the tables (fuel & ignition) switch (?) - meaning when the ecu use first table's data and when the secondary tables(?). What it is it for? Isn't it enough that I set my VTEC point?
And now strait to the point...
I set in:
PARAMETERS/VTEC
VTEC - enabled
Lower=Upper=3000rpm
Min throtlte at 30%
Min speed at 0
Min temp at 65 deg C.
PARAMETERS/Secondary Tables
Always enabled
Engine speed 3000-12500 rpm
Engine load at 0-5 bar
Throttle at 0
I expected that whenever I reach 3000rpm the tables (in TABLES view) will switch and the engine will work on secondary tables (even if the engine load is 0) whereas it stays at first maps all the time. How can I calibrate columns 2-5 if I don't get lambda readings for secondary tables?