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2008 Evo X tune @ COBB Tuning SoCal

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Old Aug 30, 2011, 09:25 PM
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2008 Evo X tune @ COBB Tuning SoCal

NIsei UICP, Cosworth panel Filter, AMS Widemouth Downpipe, COBB Cat pipe, MXP Catback, AccessPORT Psi Based Mapping(BETA)

vs

NIsei UICP, Cosworth panel Filter, AMS Widemouth Downpipe, COBB Cat pipe, MXP Catback, NO TUNE




Old Aug 30, 2011, 09:41 PM
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Baseline for reference
Old Aug 31, 2011, 06:13 AM
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What are the advantages of psi-based mapping?
Old Sep 1, 2011, 11:38 AM
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Originally Posted by Kracka
What are the advantages of psi-based mapping?
The stock ECU aims to hit a target load. So I'm assuming it is now trying to hit a target boost level.
Old Sep 1, 2011, 12:39 PM
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Yep this car targets a boost pressure instead of load that can vary due to temps and conditions.

it also has
* KnockCEL

As per it's name this mod will flash the Check Engine Light (CEL/MIL/SES) when the ECU see's knock.
There are two flashing speeds, SLOW for low levels of knock and FAST for high levels of knock

There are 4 tuneable knobs:

Load Required for CEL on Knock - This is the minimum load that will enable the KnockCEL, ie knock under these load levels will be ignored.
KnockSum Required for Slow CEL (Low Knock) - This is the minimum knocksum that will enable cause the CEL to flash slowly
KnockSum Required for Fast CEL (High Knock) - This is the minimum knocksum that will enable cause the CEL to flash fast
Knock CEL Flash time - This is how long the CEL will keep flashing AFTER the load + knocksum conditions have passed.



* AltMaps

This makes space in the ROM for complete copy of all the useful maps. It also adds code to enable various methods to switch between these maps.

The maps that are duplicated:

Alt Fuel Injector Scaling
Alt High Octane Fuel Map
Alt High Octane Timing Map
Alt Reactive Solenoid Base WGDC Map #2 (Low Gear Range)
Alt Reactive Solenoid Base WGDC Map #1A (High Gear Range)
Alt Passive Solenoid Base WGDC Map #2 (Low Gear Range)
Alt Passive Solenoid Base WGDC Map #1A (High Gear Range)
Alt Boost Target #2 (Low Gear Range)
Alt Boost Target #1A (High Gear Range)
Alt Cranking Enrichment IPW Adder (Main)

* The Alt Passive Solenoid Base WGDC Map's may not be available if your model doesn't have twin solenoids (ie Ralliart Lancers)
* The #1B boost maps have been droped and the code is replaced to use #1A in their place

As I mentioned there are 4 methods to swap between maps (You must nominate and configure which method you want at flash time)

* TPS map switching

As the name suggests this uses the Accelerator Pedal to swap maps, simply turn the ignition ON (but do NOT start the car) and hold the Accelerator Pedal down to the floor

* Cruise Control map switching

This uses the ON/OFF Cruise Control button to swap maps, simply hold the ON/OFF Cruise Control button to toggle maps. This CAN be done whilst the car is driving, see Load Threshold tuneable knob.

* 5V ADC map switching

You can connect your meth/nos controller to the ECU (using pin 112) it must output 0v on FAILURE, and 5v on SYSTEM OK
Because USDM have EVAP USDM vehicles cannot use this method - please use Resistor ADC instead
When the ECU sees the voltage go ABOVE the threshold it will start the timer to swap to alternate maps.
When the ECU sees the voltage go BELOW the threshold it will INSTANTLY swap to normal maps.

* Resistor ADC map switching

You can connect your meth/nos controller to the ECU (using pin 115) it must use a relay to ground pin 115. It is preferable to use a ~250Ohm resistor between pin115 and ground
When the ECU sees the voltage go ABOVE the threshold it will INSTANTLY swap to normal maps.
When the ECU sees the voltage go BELOW the threshold it will start the timer to swap to alternate maps.

There are 4 tuneable knobs:

Alternate Map Master (0=OFF, 1=5V ADC, 2=CruiseControl, 3=TPS, 4=Resistor ADC) - Well pretty obvious I thought

Alternate Map Load Threshold - The system will ONLY swap maps (except for both ADC's failsafe) when BELOW this threshold

Alternate Map Time to Activate - This is the amount of time required to hold the TPS/CruiseControl button to toggle maps. In the case of the ADC's switching, this is the amount of time before the ECU will switch to the Alternate Maps - switching map to normals maps (ie in a failsafe scenario) is INSTANT

Alternate Map ADC Threshold - This is the voltage threshold

For 5V ADC the voltage must be ABOVE this threshold before it will swap to Alternate Maps
For Resistor ADC the voltage must be BELOW this threshold before it will swap to Alternate Maps

Old Sep 1, 2011, 01:09 PM
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Nice, now next time I get tuned I'll be able to get my Tephra mods back
Old Sep 2, 2011, 09:25 AM
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Back on topic, great results with a cat and airbox!
Old Sep 8, 2011, 04:34 PM
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am i reading this correctly? are you pushing over 27 lbs of boost?
Old Sep 8, 2011, 08:44 PM
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Originally Posted by ImEv0
am i reading this correctly? are you pushing over 27 lbs of boost?
28 tapering to 19
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