7K Rev Limit ECU questions
carfax. or pull the carpets up and see....look for any signs of water standing in the car....
as for Turbo Lancer...i had 03 lancer and made 190whp. and 220wtq....good but for the money it was fun, but im not sure 100% worth it...
as for Turbo Lancer...i had 03 lancer and made 190whp. and 220wtq....good but for the money it was fun, but im not sure 100% worth it...
Here's another fact. D16, D15, Bxx are largely popular engines. There's a gazillion companies making part for those engines so the competition is alot stiffer. If they want to sell their products, they have to invest more in R&D to get the most hp out of everything they produce. Who makes performance parts for your 4 banger? Other than RRM and RPW? Exacly... no one! Neither of those 2 companies are being pushed to outperform anyone. Why would they invest mad money to get an extra 2% gain out of their mods if they know they'll be able to sell whatever they have in stock anyway?
Last edited by blaze_125; Apr 14, 2009 at 09:50 AM.
It depends entirely on the motor though, take a run of the mill Civic and it won't gain 10 HP with an intake.
ok so i have been researching and looking through my rom all day trying to figure out the location of the rev limits.
Senate, this is what i found, now im not sure if this even is the locations or not but i thought id show you and see what you think.
ok. in my rom image: http://www.mediafire.com/file/mnzmq2mdmtn/Stock 03 lancer oz AT.hex
... i found four different locations/addresses: 35a63, 35a67, 35c25, and 35c27.
i didnt want to try them yet cuz i read something about if these arent correct and i changed them, then the checksums wouldn't be right or something, potentially damaging the ecu. And i didn't want that to happen
... so let me know what you think
Senate, this is what i found, now im not sure if this even is the locations or not but i thought id show you and see what you think.
ok. in my rom image: http://www.mediafire.com/file/mnzmq2mdmtn/Stock 03 lancer oz AT.hex
... i found four different locations/addresses: 35a63, 35a67, 35c25, and 35c27.
i didnt want to try them yet cuz i read something about if these arent correct and i changed them, then the checksums wouldn't be right or something, potentially damaging the ecu. And i didn't want that to happen
ok so i have been researching and looking through my rom all day trying to figure out the location of the rev limits.
Senate, this is what i found, now im not sure if this even is the locations or not but i thought id show you and see what you think.
ok. in my rom image: http://www.mediafire.com/file/mnzmq2mdmtn/Stock 03 lancer oz AT.hex
... i found four different locations/addresses: 35a63, 35a67, 35c25, and 35c27.
i didnt want to try them yet cuz i read something about if these arent correct and i changed them, then the checksums wouldn't be right or something, potentially damaging the ecu. And i didn't want that to happen
... so let me know what you think
Senate, this is what i found, now im not sure if this even is the locations or not but i thought id show you and see what you think.
ok. in my rom image: http://www.mediafire.com/file/mnzmq2mdmtn/Stock 03 lancer oz AT.hex
... i found four different locations/addresses: 35a63, 35a67, 35c25, and 35c27.
i didnt want to try them yet cuz i read something about if these arent correct and i changed them, then the checksums wouldn't be right or something, potentially damaging the ecu. And i didn't want that to happen

I've been doing alot of comparisions between various ROMs from different Mitsubishi's and looking at the code of each one in an effort to decipher our Lancer ROM's Rev Limit values. I'm making progress, it just takes time.
For people that don't have any cylinder head work, valvetrain work, changed piston compression ratio or a large plenum intake manifold (which is a very large percentage of Lancer owners), zero gains will be seen by increasing the limit to 7000. If you look at any Lancer dyno run you will plainly see that the powerband begins falling off after 4500-5000. The dynamics of the 4G94 are to make low end torque. The rod length and stroke are very long and the piston speeds are already very, very high at the stock redline.
The quest of a 7000rpm redline may do more harm then good once it starts getting flashed into ROMs. Just something to think about.
For people that don't have any cylinder head work, valvetrain work, changed piston compression ratio or a large plenum intake manifold (which is a very large percentage of Lancer owners), zero gains will be seen by increasing the limit to 7000. If you look at any Lancer dyno run you will plainly see that the powerband begins falling off after 4500-5000. The dynamics of the 4G94 are to make low end torque. The rod length and stroke are very long and the piston speeds are already very, very high at the stock redline.
The quest of a 7000rpm redline may do more harm then good once it starts getting flashed into ROMs. Just something to think about.


