So, one guy saying can be done without a tuner,one says you need a tuner. M8, Stock exhaust & no mods at all . Anyone do this w/o a tuner & if so any problems. ??
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2020 catless Tri
So, one guy saying can be done without a tuner,one says you need a tuner. M8, Stock exhaust & no mods at all . Anyone do this w/o a tuner & if so any problems. ??
2020 TriGlide Tahitian Teal aka (Hawaiian Hussy). Avon frt & Comfortred rear tires. ProAction frt & rear susp. RZ seat. DK floorboard extension & rear axle retainer kit with EBS, HD pull -back bars. Custom Dynamics front turn signals & Vent grill. All ,HD "Edge Cut " accessories.
I Have done a half dozen no tuner, & had no problem, But a good tune will make it run better & cooler .Originally Posted by PosseRider
Depends on why you’re removing the cat if you removing it for heat on the foot‘ No you don’t need a tuner.. If your removing it for performance yes you probably should use a tuner….
Sometimes a Cigar is Just a Cigar.....
2019 Tri-Glide.......
I have not done it on my M8 because it dosnt bother me. I did the cat removal on my Dyna 33.5 seconds after it arrived home. No tuner/ stage 1 till later. Not the same motor I know. I think if your gonna go through the trouble of removing the cat might as well do a stage 1 and be done with it. A breather bypass is also smart money. See DK Customs web site.
I did this on my 20 Tri awhile ago and no tuner.
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The newer bikes have a good deal of self adjustment in the ECM, I have done several myself without any issues. DK Custom did an article on this subject I do believe, my train of thought is. The 02 sensors are ahead of the cat so any change by removing the cat would be minor.
Just have to find one now that has the time. My guy in Richmond has no mech, now but himself & is swamped. He said maybe late Oct .
2020 TriGlide Tahitian Teal aka (Hawaiian Hussy). Avon frt & Comfortred rear tires. ProAction frt & rear susp. RZ seat. DK floorboard extension & rear axle retainer kit with EBS, HD pull -back bars. Custom Dynamics front turn signals & Vent grill. All ,HD "Edge Cut " accessories.
Hardest part is getting the mufflers off.
I remember a thread with Kevin and Fuzzy talking about doing something that let the comp relearn after doing minor stuff and that it made more of a difference than they would have thought.
Do not argue with an idiot.He will drag you down to his level and beat you with experience.
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1989 GL1500 Goldwing (SOLD)
2006 GL1800 CSC
Harley ECM have adaptive learning programed into them, The M8 Delphi systems have more than earlier models
Doing away with the cat will not hugely affect these bikes/ trikes, the O2 sensors will still send required info to the ECM
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Current ride : 2021 FREEWHEELER M8, oldest ride 1960 FL
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