T6 tuning to lock maf# @245
- Thread starter tcgn
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Depending on boost level, that might not be a bad reading. If you are running 12-14 lbs of boost 249 would be a good reading.
As for locking the maf, there is no table for that. You will have to code that into the chip and I don't know of anybody that will just give you that info. The chip gurus have worked hard to figure stuff like that out and that is why they get paid to burn a chip for you. I know you have been asking questions about Jay Carter chips and he has a code for a varible timing that is a nice feature from what I hear but thats why he charges for chips. So in short there is some codes that are public information and some are not. I personal like the T-6 tuner so I can tuner my chip to my car. I use a thumbwheel so I can have 8 setting so that I don't need those codes like variable timing, locking blms, and others. I have the different setting on the thumbwheel so I can switch between say a street setting, a strip setting, nitrous setting, and in between. Just food for thought.
Chuck
As for locking the maf, there is no table for that. You will have to code that into the chip and I don't know of anybody that will just give you that info. The chip gurus have worked hard to figure stuff like that out and that is why they get paid to burn a chip for you. I know you have been asking questions about Jay Carter chips and he has a code for a varible timing that is a nice feature from what I hear but thats why he charges for chips. So in short there is some codes that are public information and some are not. I personal like the T-6 tuner so I can tuner my chip to my car. I use a thumbwheel so I can have 8 setting so that I don't need those codes like variable timing, locking blms, and others. I have the different setting on the thumbwheel so I can switch between say a street setting, a strip setting, nitrous setting, and in between. Just food for thought.
Chuck
You can simply do what I did, take a few entries below the current FF spot and FF them BUT that wont rid yourself of the dreaded MAF dropout. Dropouts are caused by the ECM resetting the MAF value momentarily because basically it cant believe its 255 for so long, there must be a mistake, so it starts over.
To properly lock MAF values to 255, you need to program the computer to, at a certain point RPM or throttle wise, to disregard the sensor and plug in a value. So basically the logic is ok, the engine should be at 255, so I'm gonna stick it in there (that didnt sound right) until the throttle or RPM drops below a certain point. Its kind of like locking the BLM, only you're locking the MAF value instead.
Dont ask me how, wish I knew. I'm only a messenger.
To properly lock MAF values to 255, you need to program the computer to, at a certain point RPM or throttle wise, to disregard the sensor and plug in a value. So basically the logic is ok, the engine should be at 255, so I'm gonna stick it in there (that didnt sound right) until the throttle or RPM drops below a certain point. Its kind of like locking the BLM, only you're locking the MAF value instead.
Dont ask me how, wish I knew. I'm only a messenger.
Removing 1 screen should help air flow, if you are running more then 15lbs of boost it should read 255 with your setup. One of the local guys was hitting 240's with 15lbs of boost, I notice his air filter could use cleaning, once cleaned it was hitting 255 with 15lbs of boost. So I would say the less obstruction the better but with the Maf being a expensive and delicate, I would leave the screen in on the incoming side.
Just food for thought.
Chuck
Just food for thought.
Chuck
Possibly. However, by removing a screen, you theoretically increase turbulence inside the sensor. Now, if the turbulence is such that it redirects airflow past the sampling wire in a weird way, the sensor may not REPORT the added airflow, and measured airflow VALUES may be even lower.
Dessert for thought
I think there is too much emphasis on getting 255 @ WOT. IFfor ex what you are doing is tuning the day you are at the track, then simply add fuel someplace else.
EGTvsO2vsPlugReading should give all the feedback you need IMO. Plugs dont lie.
Lest I get in an argument, Im NOT saying it perfect the way it is. Rather, Im speaking to a particular situation. See, what you are wanting by getting to 255 is more fuel. Do you need the fuel? Where do you need it?
Shawn
EGTvsO2vsPlugReading should give all the feedback you need IMO. Plugs dont lie.
Lest I get in an argument, Im NOT saying it perfect the way it is. Rather, Im speaking to a particular situation. See, what you are wanting by getting to 255 is more fuel. Do you need the fuel? Where do you need it?
Shawn
The reason for the patch isnt for the 255, its for the cars that DO peg the MAF and the ECM continuously resets the buffer. The lock simply says, this guy is cranking along, lets max the MAF and not let the ECM figure it out.
Carl Ijames' MAF lock code
This has been posted by Carl before and is a result of his hard work. Pretty straightforward, but if you don't understand how to do it, might want to get someone else to do it for you:
To insert the patch, change $3D65 and $3D66 to $3B 1C so it will jump to a block of zeros that we can use as a patch area at $3B1C instead of to $3EAF. At $3B1C insert my patch: $91 36 22 02 97 81 7E 3E AF. The last byte, $AF, is at address $3B24. This translates to:
3B1C: 91 36 CMPA $36 Compare A (=$80 =50%TPS) to %TPS
22 02 BHI END Branch if <50% TPS
97 81 STAA $81 Store the new BLM
END: 7E 3E AF JMP $3EAF Go back to normal code
This has been posted by Carl before and is a result of his hard work. Pretty straightforward, but if you don't understand how to do it, might want to get someone else to do it for you:
To insert the patch, change $3D65 and $3D66 to $3B 1C so it will jump to a block of zeros that we can use as a patch area at $3B1C instead of to $3EAF. At $3B1C insert my patch: $91 36 22 02 97 81 7E 3E AF. The last byte, $AF, is at address $3B24. This translates to:
3B1C: 91 36 CMPA $36 Compare A (=$80 =50%TPS) to %TPS
22 02 BHI END Branch if <50% TPS
97 81 STAA $81 Store the new BLM
END: 7E 3E AF JMP $3EAF Go back to normal code
87GN_70GS
Is that really the patch? I would take it yes but with post after it I wasn't sure if it's because you posted the patch or it's not really the patch. I am still in the learning phases so sorry for not knowing but I'm probably not the only one wondering.
Thanks
Chuck
Is that really the patch? I would take it yes but with post after it I wasn't sure if it's because you posted the patch or it's not really the patch. I am still in the learning phases so sorry for not knowing but I'm probably not the only one wondering.
Thanks
Chuck
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