M&M Cycles offers FREE shipping on all orders over $150 within the United States. A $9.95 shipping charge will apply for all orders under $150.Free shipping excludes any items being shipping to Alaska or Hawaii and any items over 70 pounds. Customers outside the United States, please see our FAQs page.Orders typically ship within 3 days unless the item is backordered. We ship via USPS, UPS or FedEx, and will email tracking information at the time of shipment.Since introducing our new Air Hammer Naked Air Cleaners and making custom covers for our customers, we've been amazed at the creativity people show. This gallery is to showcase some of the things they've come up with! Here at Stan's Harley-Davidson we have a fully functioning Dynojet Model 250i Dynamometer at our disposal to meet all your tuning needs. Our Dyno has an Eddy Brake for placing a proper load on you motorcycle while tuning as well as an Air / Fuel Ratio Monitor for more accurate tuning. DYNO SERVICES WE OFFER

»Standard Horsepower and Torque runs: We do about 5 pulls with your bike on our dyno to measure the max horsepower and torque. »Carburetor Tuning: This involves tuning your carb by replacing jets if necessary and measuring horsepower / torque. (2 or more hours) »Harley-Davidson® Pro Super Tuner or Dynojet Power Commander installation ( pre-made MAP): This involves installing a fuel delivery modification device like the Pro Super Tuner or Power Commander on your bike along with a pre-calibrated tuning MAP. This does not include custom tuning. Includes horsepower and torque measurements. »Harley-Davidson® Pro Super Tuner or Dynojet Power Commander installation ( Custom MAP): Involves installing a fuel delivery modification device like the Pro Super Tuner or Power Commander on your bike along with creating a custom MAP. This requires many hours and is more costly than having a pre-made MAP installed. Includes runs for horsepower and torque measurements. (at least 4 hours, but could take 8 or more hours)

NOTICE: We typically will not Dyno tune a motor that has not reached the end of it's break in period (500 miles). SCREAMIN' EAGLE® STAGE 1 AIR CLEANER KIT WITH SLIP-ON MUFFLERS SPECS Screamin' Eagle Stage 1 Air Cleaner and Mufflers TOP DYNO PERFORMER LIST Screamin' Eagle 110 kit, 110 Forged Pistons, SE Heavy Breather, Dynojet PC, Ported & Polished 110 Heads w/ SE Roller Rocker arms, SE Race Clutch, SE Spark Plug Wires, High tensile Stud Kit, Quick install pushrods, Exhaust unknown.best air purifiers under $100 Screamin' Eagle Air Cleaner, Vance & Hines 2 into 1 Exhaust system, Dynojet PC w/ Custom built MAP.super tech air duct cleaning Screamin' Eagle Stroker Flywheel Kit, Ported HTCC Heads, SE 260 Cam, 48mm Mikuni Carb, SE Race Tuner, Rinehart True Dual Exhaust.cleaning fixed barrel air rifle

Screamin' Eagle Air Cleaner Kit, Kerker K Series Mufflers, Dynojet Power Commander. Screamin' Eagle Pro Stage IV103 inch Kit, Screamin' Eagle Air Cleaner Kit, SE Mufflers, SE Race Tuner 103 Inch Kit, Screamin' Eagle Pro Heads, SE Air Cleaner Kit, SE 10.5 to 1 Piston Kit, SE 260 Cam, SE Quick Install Pushrods, Vance & Hines Pro Pipe, Dynojet PC w/ Custom MAP Screamin' Eagle 113 Inch Pro Race Kit, SE Stage 1 Air Cleaner Kit, Vance & Hines RSD Tracker Exhaust System, Screamin' Eagle Pro Super Tuner. Stock 103 inch Motor, Stock SE 253 Cams, Screamin' Eagle Stage 1 Air Cleaner Kit, Dynojet Power Commander w/ custom MAP, Rinehart True Dual Exhaust System. Screamin' Eagle CNC Ported Heads, 10.5 to 1 High Compression Pistons, 1550 Cylinders, SE Stage 1 Air Cleaner Kit, SE Perfect Fit Pushrods, Vance & Hines Pro Pipe, Dynojet Power Commander w/ custom MAP. Screamin' Eagle Pro Stroker Flywheel Kit, SE CNC Ported Heads, SE Forged Flat Top Stroker Pistons, SE Roller Rocker Arms, SE 50mm Throttle Body, S&S 585 Gear Drive Cam.

Screamin' Eagle Performance Heads, 1550 Cylinder Exchange, SE High Compression Pistons, SE 257 Cam, 42mm Mikuni Carburetor, Vance & Hines Pro Pipe. 110 Cubic Inch Screamin' Eagle Motor, 257 Cam, Screamin' Eagle Stage 1 Air Cleaner Kit, Vance & Hines Dual Headers w/ Cobra Mufflers, Dynojet PC w/ Custom MAP. 1550 Cylinders, Branch Flowmetrics Headwork, 10.5-1 JE Pistons, Andrews G-55 Cam, Screamin' Eagle Stage 1 Air Cleaner Kit, Basaani True Dual Exhaust System, Dynojet PC w/ Custom MAP. I was thinking of replacing the air filter of a bike into a custom free flow filter. I understand that I have to mod the exhaust to free flow as well to accompany the increase in exhaust due to the new filter. One of my friends suggested that i need to add something called as a "Piggy back" ECU before the existing ECU so that it can compensate the changes. My question is why? its the job of the ECU to monitor and compensate why do we need a piggy back ECU. motorcycle yamaha ecu air-filter

The exact answer to this is - It Depends... The reason for this is that your existing ECU, whether it be on a bike or in a car, has a range of inputs and a range out outputs, and a mapping between them. As long as your inputs are within the ranges expected, it may well be able to cope with the changed architecture, however there are two common problems: If the type and number of inputs aren't sufficient to let the ECU know the new architecture sufficiently accurately, the outputs may just be wrong - either inefficient, or potentially damaging If the inputs stray outside the values expected, the ECU will not know what to do, and although ideally will cope gracefully by reducing fuel flow etc to 'safe ' levels, it could theoretically deliver unexpected and dangerous outputs, which could damage the engine. For the majority of cases, point 1 is irrelevant, as you aren't changing the mapping requirements dramatically, but point 2 can happen relatively easily if the stock ECU is limited in its mapping permutations.

There is no need to reprogram the ECU This is for a couple of reasons: The engine barely feels a difference Contrary to what the name implies, a "free-flowing" intake impacts the pressure at the valve inlet and not the volume of fresh inlet air per cycle. Here are the numbers to back it up: K&N provide detailed test data for the Yamaha R15, which serves as a basis for the following assumptions: Pressure before the air intake (at max. flow) = 14.636 psi Pressure drop across K&N intake (low dust) = 6 in. Pressure at intake valve inlet = 14.419 psi Let's assume that the stock air intake is really bad and drops pressure by 14 in. H2O (similar to pressure drop across the K&N filter when it is really clogged with dust). Under similar inlet conditions, the stock filter would yield the following: Pressure at intake valve inlet = 14.130 psi So that's less than 0.3 psi difference. In terms of mass flow, the engine sees roughly 2% more air1.