Do you need to remap your Efi after a new exhaust?
I BOUGHT A NEW HD STREET GLIDE SPECIAL. ON THE BIKE IS A UP TO DATE AIR CLEANER AND A SET OF SCREAMIN EAGLE PIPES AND THE SYSTEM WAS MAPPED. DO YOU THINK THAT I SHOULD RE-MAPP WHEN I GET A NEW SET OF SLIPP -ON’S?
Can a Harley Davidson ECM change without intake?
The stock ECM on your Harley Davidson has a specific “window” in which it can adjust the fuel mixture to accommodate for changes. Changes in temperature, altitude and air pressure are easily within this window. An exhaust change without intake is borderline.
Can a slip on muffler be changed on a Harley?
Check with the manufacturer to be sure. http://www.fixmyhog.com/video/review-of-harley-slip-on-mufflers-by-cobra-008375/ What if I have a K&N high flow filter and change my stock pipes to a different style of stock pipes?
I BOUGHT A NEW HD STREET GLIDE SPECIAL. ON THE BIKE IS A UP TO DATE AIR CLEANER AND A SET OF SCREAMIN EAGLE PIPES AND THE SYSTEM WAS MAPPED. DO YOU THINK THAT I SHOULD RE-MAPP WHEN I GET A NEW SET OF SLIPP -ON’S?
The stock ECM on your Harley Davidson has a specific “window” in which it can adjust the fuel mixture to accommodate for changes. Changes in temperature, altitude and air pressure are easily within this window. An exhaust change without intake is borderline.
What kind of car is sniper EFI-Holley good for?
Perfect for street rods, muscle cars, off road trucks or nearly any carbureted vehicle. Put an end to cold start issues, hesitations, vapor lock, and flooding.
How does a factory refurbish sniper EFI work?
Put an end to cold start issues, hesitations, vapor lock, and flooding. The Sniper EFI Factory refurbish process starts by stripping a used or blemish Sniper EFI throttle body down to the bare casting. This process ensures that our factory refurbished Sniper EFI systems are just as reliable as a new unit off the shelf.
When to stop turning the air fuel mixture screw?
Listen to the engine’s idle sound and stop turning the screw when it starts making a rough rising and falling sound instead of its normal idling sound. Tightening the screw weakens the air and fuel mixture and decreases the amount of fuel flowing to the engine.
How do you adjust the air fuel mixture?
On a modern-day vehicle, air-fuel mixture adjustment is controlled by the computer of the vehicle. Use a scanner to get an air-fuel mixture reading, and you can also use a five-gas analyzer, which is used in emission testing.
What’s the best way to tighten a fuel mixture screw?
Turn the screw clockwise until the engine starts to sound rough. Use a flathead screwdriver to tighten the screw. Listen to the engine’s idle sound and stop turning the screw when it starts making a rough rising and falling sound instead of its normal idling sound.
What to do when your EFI goes bad after a new exhaust?
However, if the condition came about after you changed your exhaust or intake, you may want to look into it. Make sure you are using premium fuel. Try to think if the condition came on gradually or suddenly. That might help pinpoint when something changed and be a clue as to how to address the issue.
What happens when you change exhaust without intake?
Changes in temperature, altitude and air pressure are easily within this window. An exhaust change without intake is borderline. The ECM may be able to compensate, but you will inevitably be making a lean situation, worse. Changing intake with pipes puts you completely outside the window.
Can a custom air filter cause an issue?
A custom air filter will not allow that much more air to go through the system to cause issues, even on larger engines. Usually you wouldn’t need to worry about remapping (unless you wanted to), until you start on the major mods (headers, heads, cam (s), etc). Stuff that really makes a difference. – Pᴀᴜʟsᴛᴇʀ2 ♦ Jun 10 ’15 at 1:40
Can a custom air filter change mapping in the ECU?
I would think in most cases a custom air filter alone would not be enough to change mapping in the ECU. A custom air filter will not allow that much more air to go through the system to cause issues, even on larger engines.
Do you need a remap on a slip on?
Quick answer. Slip on’s only, or free flowing air filter only, you don’t need remap or tuner. If you do both, it’s a good idea. Also search for subjects like “tuner, remap, TFI, XIED”. I would go with the exhaust slip-ons (of your liking) and do the air to a scream’n eagle so it will give you full benefit as a full stage one set-up.
Do you need to remap the fuel injection?
To get the most performance out of your bike remapping the fuel injection is a must. With just a setup of pipes installed it is not imperative to remap the fuel curve as it will not run lean enough to cause any damage.
What happens if you don’t do a Fi remap?
if it doesn’t require a remap, it doesn’t change performance- either by improving smoothness (many stock FI maps are very abrupt) or increasing power. Both of those are achieved by fine tuning the fuel / air mixture at specific combinations of revs, throttle opening, inlet vacuum and exhaust backpressure.
Quick answer. Slip on’s only, or free flowing air filter only, you don’t need remap or tuner. If you do both, it’s a good idea. Also search for subjects like “tuner, remap, TFI, XIED”. I would go with the exhaust slip-ons (of your liking) and do the air to a scream’n eagle so it will give you full benefit as a full stage one set-up.
To get the most performance out of your bike remapping the fuel injection is a must. With just a setup of pipes installed it is not imperative to remap the fuel curve as it will not run lean enough to cause any damage.
Do you need to remap your slip on mufflers?
Most slip-ons do not require remapping. Check with the manufacturer to be sure. http://www.fixmyhog.com/video/review-of-harley-slip-on-mufflers-by-cobra-008375/