EFI mapping | Fix My Hog

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I have a Stage 1 and 255 cams. I paid for a dyno tune-up, which only took 30 to 45 minutes. Did I get what I paid for—$450.00? (Premium member,... View Content

Should I Buy New Fuel Injectors?

After installing Cobra pipes, and a K&N air filter (I haven't picked out a remapping gizmo yet), what do you think of installing new fuel injectors that put out about... View Content

New Air Intake - Remap?

I have a 2015 Street Bob with 96ci. I bought an Arlen Ness Stage 1 Big Sucker. Can I use it on my Harley without changing the exhaust? Do I... View Content

My 2015 Low Rider has a stage 4 motor kit with Bassani 2-in-1 exhaust. Bought it this way. Was told to expect the deceleration popping (kinda like it). Is that... View Content

Hey, I have a question. I have a stock 2003 HD Road King Classic 100th Anniversary. I would like to put a cam in it to get a little more... View Content

Mapping for Slip-Ons

I have a 2002 Road King Police edition with fuel injection. I changed the slip-on mufflers and have been looking at an air cleaner to help the bike breathe better.... View Content

Stage One Options

I just got this HD FLSTC 2014 1200 miles second hand and want pipes, air cleaner stage 1 and a TUNER. Which is better? I follow your advice to the... View Content

Premium member. 2007 Harley Davidson Ultra Classic. When I first start out on the bike, she will backfire when down shifting and cut off when coming to a stop with... View Content

I would like to thank you for your website, you have a lot of great information. I have an engine miss at a constant load between 2100-2300 rpm, whether I... View Content

Causes and Cures for Popping on Deceleration

There’s a lot of discussion about popping on deceleration and I have this problem myself. What are the most common causes and cures for this problem on a fuel injected... View Content

Performance Upgrades

I have made upgrades of Cobra exhaust pipes, Screamin Eagle mufflers ,and air cleaner upgrade. I now need a tuner,but am undecided between Harleys and Cobras. I have heard that... View Content

Non-Warranty Upgrades

I am thinking about becoming a member but my bike is under warranty so I can't really go into motor. What I would like to know is do you have... View Content

Exhaust Swap Out

I want to put a Rhinehart exhaust on my wife's Heritage. It's a 2 into 2 exhaust. Does this require any other work besides a direct swap out? Via Email... View Content

In The Shop: Bad Fuel Injector

2008 XL SYMPTOM: Running on one cylinder DIAGNOSIS: A bad fuel injector REPAIR: Replace fuel injector https://www.fixmyhog.com/video/fi2000-powrpro-cvt-install-003260/ Harley Davidson fuel rail Intake seals https://www.fixmyhog.com/video/carb-intake-and-ss-air-cleaner-install-005402/ Spark plugs https://www.fixmyhog.com/video/spark-plugs-001224/ Bad, or blocked... View Content

Just bought Vance and Hines Pro pipes and my o2 sensors are too big what do I need to make the pipes and o2s work? Via Email If you have... View Content

Bike Will Not Idle

Bike will not idle once warm. I've adjusted over and over from other blogs. I have the cobra fi2000 power pro. aftermarket breather and renegade pipes. Bike just doesn't want... View Content

Is there any advantage to using a Pro Race Tuner on a stock 103 engine in a 2011 Road King? This bike is not in California and does not have... View Content

Tuner On My Harley

Well maybe someone can help me. I have a 2015 ROADGLIDE SPECIAL. The dealer installed S&S power tune duals, V&H VO2 AF from my 2012 RGC. Also have V&H FP3... View Content

Harley Stock Cam

I would think the air filter and pipes would probably require an Air/Fuel/Ratio increase. Does adding the cam upgrade, definitely need an increase of Air/Fuel/ratio more than just the air... View Content

Hypercharger Intake

Q: I have a 2014 Ultra Classic. I've had it for 6 months and 4,100 miles. I just purchased a Kuryakyn hypercharger intake and V & H Big Radius Staggered... View Content

Q: I sure hope you guys can help me. This problem is driving me friggin nuts. I had a stock TC96, 2009 EG. I installed a stage 2 air cleaner,... View Content

Vance and Hines Trifecta for Power & Performance

It’s fairly common knowledge that the more air that you can move through your engine, the more power and torque that it is able to produce. It’s also well known... View Content

Harley O2 sensors

Hi, I subscribed to your site earlier in the year and find your videos really helpful. I own a 2006 Dyna Super glide. I'm doing a Stage 1 upgrade and... View Content

Power Commander V and the Screamin Eagle Pro Turner

What is the advantage of one over the other, between the Power Commander V and the Screamin Eagle Pro Turner? I got both when I bought a 2011 Road King... View Content