JD-Ws6

i installed 8.1L maf sensor on my 2001 t/a
now it seems to run a lot richer am i in need of a new computer tune and if so what would be a good tuner to use
i would like to get program for my laptop and teach myself how to tune
there are only a handfull of tuners in my area any suggestion

Exeodus

iTrader: (1)

Whats the advantage to running that MAF?

salemetro

iTrader: (5)

I'd say that you probably got a defective one. It looks like those were used on 5.3s, 6.0s,4.0's(bonneville),5.7's, and 8.1's....according to the interchange information that I have available to me.

JD-Ws6

i never thought to test it out caus it came off of a running truck ill scan it tomorrow with the genesis scan tool and ck the fuel trim
arent maf calibrated for specific engines?

2xLS1

iTrader: (25)

No. Tunes are calibrated for specific MAFs. All you've done is create a mismatch between the calibration in the PCM and the hardware on the car.

JD-Ws6

that makes sense i will put stock 75 mm back on and run it
and when i get a tuner program reinstall larger maf and match everything up

JD-Ws6

ok iscan the computer for codes
both front o2 sensors not switching correctly
most likely got wipped out by running to rich
and the LTFT is -1.6 both sides
hopefully 2 new o2 sensors and stock maf sensor
will fix this also had a knock sensor code
any info would help