​I have completed testing and tuning with the  M4  full  exhaust  system on the 2021 Mt09 

Thank you to the awesome customer that ordered a new M4 exhaust and sent it  to me!!


The finish from the coating on the pipes  looks excellent and the  fitment   is very good.  It is solid with excellent fit to the bike and to the different pieces on the system. 

 It does  include an o2 extender.    

The instructions are easy to follow.   
 
The o2 bung accepts both  narrow  and wide band o2 sensors with an included insert. 

Install took me an hour and 15 minutes from start to finish.   I removed the top radiator mounting bolts which allowed me to slide the radiator off the bottom mount.  I also loosened the bottom radiator bracket  bolt so the bracket could move around which eased install.    The header comes as one piece and was easy to install. .   I used new exhaust gaskets but think you would be fine reusing the stock ones as they are very thick.   I used dabs of grease to hold the exhaust gaskets in place when mounting the header tubes.       Once the exhaust was loosely  on the bike , I moved from the back of the bike forward to tighten all the bolts.   Many people do this backwards and start at the front of the bike which can give you alignment issues.  

With the black coating on the pipe I was extremely carful not to scratch it and after install I heat cycled it twice but starting the bike and letting it idle for 5 mins.  The next day I did the same thing.  Then the next day I started really riding it. I do not know that this is a needed step but I wanted to be sure the coating was fully baked on before I started riding it and it seemed like an easy precaution to take . 

My highly calibrated bathroom scale weighed  the stock exhaust at 16 lbs with the   M4  weighing in at 11.5  lbs with all the hardware for a savings of 4.5  lbs.   

There is no  DB killer.   I found the system to be a reasonable sound level.  The 2 mufflers doing a decent job of quieting it down  


First is stock bike (red) vs  M4  exhaust with stock ecu (no tuning)( blue) :  This is the first pipe I have tested that the new pipe had an area below the stock pipe pre tuning. 
  

next lets look at  the M4  with stock ecu (no tuning) (red) vs the  M4   with my flash ( blue) .  I found  gains across the entire rev range 

Now lets compare the  stock bike(red)  vs   the M4  exhaust and my flash( blue).  Gains across the entire range , though they are small from 5500-6750 rpm ​

Next I tested the DNA stage 2 filter ( blue )  vs my airbox mod with sprint filter (red)     If you have looked at my other testing results you will be used to seeing this pattern.   The DNA lid works better through a narrow range in the middle , the area that the pipe was struggling with the stock airbox.  The Spint drop in filter with air box mod ( see my intake testing) works better at the bottom and top, but only slightly in this case. 

​

Intake testing

2021 -23 MT09 /Tracer 9 GT/XSR900 ECU flash

$275.00

This is the page to purchase the flash for :

2021 - 2023 MT09

2021-2023 Tracer GT 9

2023 XSR900

To see information on this flash with testing results of different exhausts and intake set ups please see my 2021 MT09 specific page

2021 - 23 MT09 / Tracer GT/2022 XSR900 - FLASHED BY VCYCLENUT

please fill out and send this form with your ecu . This is how you will tell me your modifications and what you want from the flash

flash Information sheet to send in with your ecu - FLASHED BY VCYCLENUT

Shop

2021-23 MT 09/ 22-23 XSR 900 Tracer GT Sprint drop in filter

$139.97 - $329.00

Also fits the 2021 Tracer GT900

The F1 filters slightly better and is waterproof, both filters perform the same

• Single layer polyester
• P08 material currently used in MotoGP and WSBK
• Innovative polyester material allows for consistent airflow
• Steel wire mesh with epoxy varnish finish
• Optimized filter surface area provides more airflow, more power and more filtration
• Increased air permeability and filtration efficiency when compared to cotton air filters
• Airflow: 5,050 l/m2/sec. / Filtration: 80μm
• Can be cleaned using only compressed air
• Dry filter, no oil treatments required
• Direct OEM replacement
• 1 year warranty
• See technical tab for additional fitment listing

see my intake testing results here

https://www.vcyclenut.com/intake-testing.html

Shop

2021 - 23 MT09/ 22-23 XSR 900 DNA Stage 2 lid with or without ECU flash

$329.99 - $580.00

Features

OEM Air Filter Air Flow: 94.20 CFM

DNA Air Filter Air Flow: 145.80 CFM

DNA Increased Air Flow: +54.78%

DNA Filtering Efficiency: 98-99%

Product Information

• This filter features DNA®’s Stage 2 kit eliminates the OEM intake snorkel of YAMAHA models and offers higher performance and better intake sound.
• This Stage 2 kit is designed to replace the stock plastic air box top cover and OEM air filter. With the use of P-Y9N21-S2 there is no need to use the OEM air filter or DNA P-Y9N21-01.
• Included in the Stage 2 kit you will find all the necessary parts to install the Stage 2. Special stainless steel bracket for mounting the stock ECU is supplied and also zip ties to mount and tie down your ECU are supplied.
• The airflow of this new DNA Stage 2 air filteris +54.78% more than the stock YAMAHA air box with OEM air filter & stock air box cover applied!
• Stock air box with OEM air filter & OEM cover flow : 94.20 CFM (Cubic feet per minute) @1,5”H2O corrected @ 25degrees Celsius.
• Stock airbox with DNA Stage 2 air filter: 145.80 CFM (Cubic feet per minute) @1,5”H2O corrected @ 25degrees Celsius.
• This DNA® Stage 2 kit is designed as a High Flow product for: ‘Road & Race use’.

 

 

• Yamaha MT-09 DNA Air Filter Stage 2 Series :Yamaha MT-09 (2021)
• Yamaha MT-09 SP (2021)

click here to see my testing results

Intake testing - FLASHED BY VCYCLENUT

combine the lid with my matching ECU flash and save $25 off of the flash !!

Shop