JMac24
03-23-2005, 03:17 PM
So the 4.10s are in. I know you can flash the ecu for tire change size but does any flashing need to be done with a gear change?
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: Put 4.10's in with my lift, computer flash? 9W3-HD 03-23-2005, 03:19 PM how big of a lift did you put on? what size tires? simicrintz 03-23-2005, 03:23 PM JMac24; I put 4.56's in my Tahoe, and had to tell the programmer (Hypertech) not only my tire size, but also my new rear end gearing. I was running 33's, with a 6" RCD lift. Don't know if that is any help or not....... JMac24 03-23-2005, 03:26 PM CST 6-8 in lift with 35's. JMac24 03-23-2005, 03:28 PM JMac24; I put 4.56's in my Tahoe, and had to tell the programmer (Hypertech) not only my tire size, but also my new rear end gearing. I was running 33's, with a 6" RCD lift. Don't know if that is any help or not....... It may be.....I wonder if the D/A is different. I would assume you need a flash but, not sure. Rockin 03-23-2005, 04:08 PM All the flash does is let the computer know the revolutions from the transmission output shaft relative to the revolutions of the tire and distance traveled per revolution of the tire. Since you know your tire size and your gearing, it is easiest to put in those two numbers. It can then calculate the rpms and tire circumfrence etc. ( comes down to distance traveled per transmission output shaft revolution. ) Voodoo 03-24-2005, 03:05 AM I regeared to 4.56 and 37's. I have not done anything. Runs like a champ but will give a ABS warning every now and then. Rockin 03-24-2005, 09:21 AM I should state my assumption. If you are trying to correct your speedometer, you need to program. Other than that, its your choice. JMac24 03-24-2005, 01:34 PM I should state my assumption. If you are trying to correct your speedometer, you need to program. Other than that, its your choice. Perfect. Thats what I was looking for. With the 4.10s Im only off 50 rpm give or take at 60 so. Ill just leave her be I think. | ||