Car is Pissing me off! Help!
Evolving Member
Joined: Jul 2005
Posts: 404
Likes: 1
From: Bangladesh
The GT has the magnesium/titanium compressor wheel as standard. The GSR can be optioned to have the mag wheel as well. My GSR has the mag wheel, so the tune doesn't really differ with different compressor wheel material. Sadly, the 70 serial mag wheel turbo had a high failure rate (as I had to find out) and later it was upgraded to 71 serial.
The problem with the OP's map as I see is that the car is not following the timing map as has been specified in the ROM. This might be due to the definition not being correct, or it can also be that other unexplained things in the map which causes this situation. The MAF seems ok as the JDM Map (boost) is almost in line with the 2-byte load.
Was this car (Map) modified in such a way to not follow 2-byte load for timing but some other load maybe?
Also, in the current ROM, the Max Wastegate tables 2 is not the same as 5 and 7 as it should be in JDM twin solenoid setup cars to get the desired stock boost curve.
I would suggest getting an ACTUAL STOCK GT map from some car (available in the UK easily..maybe MLR forums).
The problem with the OP's map as I see is that the car is not following the timing map as has been specified in the ROM. This might be due to the definition not being correct, or it can also be that other unexplained things in the map which causes this situation. The MAF seems ok as the JDM Map (boost) is almost in line with the 2-byte load.
Was this car (Map) modified in such a way to not follow 2-byte load for timing but some other load maybe?
Also, in the current ROM, the Max Wastegate tables 2 is not the same as 5 and 7 as it should be in JDM twin solenoid setup cars to get the desired stock boost curve.
I would suggest getting an ACTUAL STOCK GT map from some car (available in the UK easily..maybe MLR forums).
Evolving Member
Joined: May 2007
Posts: 121
Likes: 0
From: Edinburgh, UK
I believe the crazy timing as shown in the log is causing the knock but the timing maps in the ROM are very safe. The ECU is not adjusting timing as per the maps so something unexpected is happening in the ECU. Can you reflash your ECU with the correct factory ROM? jcsbanks is the man to ask.
i didn't know that about the JDM turbos, thanks for the info, and i know that the turbo wouldn't have anything to do with whats happening. i agree with Chamama that you should get a dead on stock GT map and hell def. on top of that and see how it does.
Evolving Member
Joined: Feb 2006
Posts: 264
Likes: 6
From: Vancouver, BC
I disagree...a stock GT map would cause the car to knock even worse. Have you seen the timing in a GT map:
More than likely something is off with the definition file or the evo9base file. The timing in the rom is very conservative, yet the ecu is advancing timing a lot more. When timing is made even more conservative the ecu still advances beyond that set in the maps, but doesn't advance as much as before.
If someone is proficient at locating addresses in IDApro and the like maybe they should double check the address for the ignition tables and see if everything is in line.
More than likely something is off with the definition file or the evo9base file. The timing in the rom is very conservative, yet the ecu is advancing timing a lot more. When timing is made even more conservative the ecu still advances beyond that set in the maps, but doesn't advance as much as before.
If someone is proficient at locating addresses in IDApro and the like maybe they should double check the address for the ignition tables and see if everything is in line.
Last edited by R. Mutt; Feb 22, 2008 at 02:51 PM.
Evolving Member
Joined: Feb 2006
Posts: 264
Likes: 6
From: Vancouver, BC
The GT has the magnesium/titanium compressor wheel as standard. The GSR can be optioned to have the mag wheel as well. My GSR has the mag wheel, so the tune doesn't really differ with different compressor wheel material. Sadly, the 70 serial mag wheel turbo had a high failure rate (as I had to find out) and later it was upgraded to 71 serial.
The problem with the OP's map as I see is that the car is not following the timing map as has been specified in the ROM. This might be due to the definition not being correct, or it can also be that other unexplained things in the map which causes this situation. The MAF seems ok as the JDM Map (boost) is almost in line with the 2-byte load.
Was this car (Map) modified in such a way to not follow 2-byte load for timing but some other load maybe?
Also, in the current ROM, the Max Wastegate tables 2 is not the same as 5 and 7 as it should be in JDM twin solenoid setup cars to get the desired stock boost curve.
I would suggest getting an ACTUAL STOCK GT map from some car (available in the UK easily..maybe MLR forums).
The problem with the OP's map as I see is that the car is not following the timing map as has been specified in the ROM. This might be due to the definition not being correct, or it can also be that other unexplained things in the map which causes this situation. The MAF seems ok as the JDM Map (boost) is almost in line with the 2-byte load.
Was this car (Map) modified in such a way to not follow 2-byte load for timing but some other load maybe?
Also, in the current ROM, the Max Wastegate tables 2 is not the same as 5 and 7 as it should be in JDM twin solenoid setup cars to get the desired stock boost curve.
I would suggest getting an ACTUAL STOCK GT map from some car (available in the UK easily..maybe MLR forums).
Code:
<table name="High Octane Ignition Map 1" address="30c1"> <table name="Engine Load" address="600a" elements="21"/> <table name="RPM" address="5fda" elements="19"/> </table> <table name="Low Octane Ignition Map 1" address="325b"> <table name="Engine Load" address="600a" elements="21"/> <table name="RPM" address="5fda" elements="19"/> </table> <table name="High Octane Ignition Map 2" address="4437"> <table name="Engine Load" address="600a" elements="21"/> <table name="RPM" address="5fda" elements="19"/> </table> <table name="Low Octane Ignition Map 2" address="45d1"> <table name="Engine Load" address="600a" elements="21"/> <table name="RPM" address="5fda" elements="19"/> </table> <table name="High Octane Ignition Map 3" address="4905"> <table name="Engine Load" address="600a" elements="21"/> <table name="RPM" address="5fda" elements="19"/> </table> <table name="Low Octane Ignition Map 3" address="4a9f"> <table name="Engine Load" address="600a" elements="21"/> <table name="RPM" address="5fda" elements="19"/> </table>
Last edited by R. Mutt; Feb 22, 2008 at 03:21 PM.
Evolving Member
Joined: Feb 2006
Posts: 264
Likes: 6
From: Vancouver, BC
tried that but the car wouldn't start. Though it might be immobilizer related but the JDM cars don't come with an immobilizer. Still tried changing the immobilizer code to 0xFFFF to make sure but no luck. Basically car is stuck with the 89980000 map.
Evolving Member
Joined: May 2007
Posts: 121
Likes: 0
From: Edinburgh, UK
I don't have a solution here but I am just offering a few thoughts.
Looks like the ECU is a mixed up combo of GSR and GT ROM now.
I suppose your options are limited to:
1. Buying an original GSR ECU
2. Reformatting your GT ECU and reflashing it with the correct GSR ROM - Is it possible?
3. Buying a standalone ECU. Loosing MIVEC?
Looks like the ECU is a mixed up combo of GSR and GT ROM now.
I suppose your options are limited to:
1. Buying an original GSR ECU
2. Reformatting your GT ECU and reflashing it with the correct GSR ROM - Is it possible?
3. Buying a standalone ECU. Loosing MIVEC?