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Tom Meyer · 05-12-2023, 05:41 PM

We also dumped the converters, and went with magna flow muffler, it is a little noisy. There are no rear O2 sensors so not a big deal. Been told fuel curve was changed to make the cats live from the factory. We have the 4l85e trans and drop the fluid every oil change. Never had a over heat problem and have well over 200 plus on the clock. We run 87 fuel and thats what it was tuned on. Tom

05-12-2023, 05:41 PM	#6
Tom Meyer Senior Member Join Date: Aug 2003 Location: Pierce NE Posts: 936 Likes: 78 Liked 351 Times in 120 Posts	Re: 8100 Tuner We also dumped the converters, and went with magna flow muffler, it is a little noisy. There are no rear O2 sensors so not a big deal. Been told fuel curve was changed to make the cats live from the factory. We have the 4l85e trans and drop the fluid every oil change. Never had a over heat problem and have well over 200 plus on the clock. We run 87 fuel and thats what it was tuned on. Tom __________________ Tom Meyer 5240 SS Stock ???