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Here at COBB we are constantly looking for ways to improve our product and in turn help you guys make more power and improve the way your cars drive. Earlier this week we pushed out an update to Accesstuner and Accessport firmware that includes some exciting updates as well as a couple of minor maintenance items.
Volumetric Efficiency (VE) Tuning
As Focus ST and Fiesta ST tuning exceed typical bolt-on hardware into aftermarket turbos and camshafts, the factory VE calibration becomes inaccurate. The mysteries of VE tuning and how to interpret the vast amounts of "Speed Density" tables have been simplified in the March release. New data monitors have been added to help tuners review the system changes and perfect their tunes. Additionally, the COBB Ford engineers have developed a VE worksheet (here) to guide users through the refinement process.
Related Monitors:
Estimated VE (Model)
Estimated VE (Model) Corrected
Estimated VE (Actual)
Estimated VE (Actual) Corrected
Estimated VE (Actual BT)
Estimated VE (Actual BT) Corrected
HDFX Weight Table 01 - Table 15
HDFX Weight Table OP
VE Correction Ratio
Estimated VE (Model) Corrected
Estimated VE (Actual)
Estimated VE (Actual) Corrected
Estimated VE (Actual BT)
Estimated VE (Actual BT) Corrected
HDFX Weight Table 01 - Table 15
HDFX Weight Table OP
VE Correction Ratio
Advanced Wastegate Control for Fiesta ST
Additional discovery work shows the vast complexity of boost control through an advanced wastegate PID Controller. A comprehensive table and monitor list update allows tuners to fine tune the entire wastegate control system.
Related Tables:
PID D-Term (Max)
PID D-Term Freeze (Max)
PID D-Term Gain
PID I-Term Gain
PID I-Term Gain Comp.
PID P-Term Gain (Coarse)
PID P-Term Gain (Fine)
PID P-Term Gain (Coarse) Comp.
PID P-Term Gain (Fine) Comp.
PID D-Term Freeze (Max)
PID D-Term Gain
PID I-Term Gain
PID I-Term Gain Comp.
PID P-Term Gain (Coarse)
PID P-Term Gain (Fine)
PID P-Term Gain (Coarse) Comp.
PID P-Term Gain (Fine) Comp.
Related Monitors:
WGDC P-Term
WGDC I-Term
WGDC D-Term
WGDC P-Term Gain (Coarse)
WGDC P-Term Gain (Fine)
WGDC I-Term Gain
WGDC D-Term Gain
WGDC PID Combined
WGDC D-Term Freeze Status
WGDC I-Term
WGDC D-Term
WGDC P-Term Gain (Coarse)
WGDC P-Term Gain (Fine)
WGDC I-Term Gain
WGDC D-Term Gain
WGDC PID Combined
WGDC D-Term Freeze Status
OTS Map Updates
v101 Fiesta ST maps updates:
Estimated VE and Advanced Wastegate Control Monitors.
Improved Launch Control Logic.
Increased torque limits to prevent rare limp mode conditions.
Optimized power demand fuel settings for better overall efficiency.
Optimized ignition timing strategy for more consistent results.
Adjusted wastegate tables to prevent rare cases of overboosting.
Improved Launch Control Logic.
Increased torque limits to prevent rare limp mode conditions.
Optimized power demand fuel settings for better overall efficiency.
Optimized ignition timing strategy for more consistent results.
Adjusted wastegate tables to prevent rare cases of overboosting.
v202 Focus ST map updates:
Estimated VE Monitors
Stage1 87 Octane map support
Aftermarket Bypass Valve Support
Stage1 87 Octane map support
Aftermarket Bypass Valve Support
Focus ST1 - Clock / Date Fix
Fixed bugs associated with Reset ECU to address ST1 clock and date setting issues. Any user encountering the clock / date settings bug can simply run "Reset ECU" from the Accessport to reset the control panel.
Additional Table and Monitor Updates
More useful tables and monitors!
Added Tables:
Lowside FP Duty Cycle (Min)
Lowside FP Duty Cycle (Max)
Lowside FP Voltage (Min)
Lowside FP Voltage (Feed Foward)
LSPI Load Limit Blend Modifier (OAR)
LSPI Load Limit Blend Modifier (PI)
Knock Advance Amount (Fast)
Knock Advance Amount (Normal)
Knock Advance Rate (Fast)
Knock Advance Rate (Normal)
Knock Rate Change (Max)
VCT Exhaust Retard Limit
VCT Exhaust Retard Max. (Oil Temp)
VCT Exhaust Retard Max. (Warmup)
VCT Intake Advance Limit
VCT Intake Advance Max. (Oil Temp)
VCT Intake Advance Max (Warmup)
Lowside FP Duty Cycle (Max)
Lowside FP Voltage (Min)
Lowside FP Voltage (Feed Foward)
LSPI Load Limit Blend Modifier (OAR)
LSPI Load Limit Blend Modifier (PI)
Knock Advance Amount (Fast)
Knock Advance Amount (Normal)
Knock Advance Rate (Fast)
Knock Advance Rate (Normal)
Knock Rate Change (Max)
VCT Exhaust Retard Limit
VCT Exhaust Retard Max. (Oil Temp)
VCT Exhaust Retard Max. (Warmup)
VCT Intake Advance Limit
VCT Intake Advance Max. (Oil Temp)
VCT Intake Advance Max (Warmup)
Added Monitors:
Ignition Timing Corr. Max
Knock Count Cyl1 - Cyl4
Knock PI Detection Rate
Lowside FP Input Voltage
Knock Count Cyl1 - Cyl4
Knock PI Detection Rate
Lowside FP Input Voltage
Do you have an idea or a suggestion that could make more power or enhance the driving experience? Chances are we can make it happen! Submit your ideas and suggestions to [email protected] and we’ll do our best to incorporate them in future updates.
Cheers,
The COBB Ford Expert Group
