Yamaha WR250X/R AIS Removal And Airbox Flapper Mod




People Who Liked This Video Also Liked

Yamaha WR250X/R AIS removal and Airbox Flapper Mod
Yamaha WR250X/R AIS removal and Airbox Flapper Mod
Yamaha WR250R- BEST Modifications
Yamaha WR250R- BEST Modifications
Wr250X Supermoto Ride
Wr250X Supermoto Ride
DRC Edge2 LED Tail Light Install and Review for Yamaha WR250X
DRC Edge2 LED Tail Light Install and Review for Yamaha WR250X
WR250R Walk Around and Review
WR250R Walk Around and Review
AIS Removal for Yamaha WR250
AIS Removal for Yamaha WR250
YAMAHA WR250R modification
YAMAHA WR250R modification
How to setup an FMF Power Programmer Fuel Injection Tuner for the Yamaha WR250R WR250X
How to setup an FMF Power Programmer Fuel Injection Tuner for the Yamaha WR250R WR250X
Best Yamaha WR250R Cargo Rack with Installation Instructions
Best Yamaha WR250R Cargo Rack with Installation Instructions
WR250X カスタム ZETA パワーコア4 サイレンサー FMF YAMAHA BIKE
WR250X カスタム ZETA パワーコア4 サイレンサー FMF YAMAHA BIKE
YAMAHA WR250R / WR250X Top Speed 94 MPH FMF Powercore 4
YAMAHA WR250R / WR250X Top Speed 94 MPH FMF Powercore 4
WR250R with Yoshimura RS2 exhaust  pipe muffler
WR250R with Yoshimura RS2 exhaust pipe muffler
Yamaha Wr250x GoPro Chest Mount Ride (Wanneroo)
Yamaha Wr250x GoPro Chest Mount Ride (Wanneroo)
WR250 Yoshimura Sound
WR250 Yoshimura Sound
2009 Yamaha wr250r with mods
2009 Yamaha wr250r with mods
H4 LED ligh on Yamaha WR250X
H4 LED ligh on Yamaha WR250X
Yamaha WR250R - Zeta Hand Guards/LED Blinkers and DRC LED Tail Light
Yamaha WR250R - Zeta Hand Guards/LED Blinkers and DRC LED Tail Light
Yamaha WR250X Delta Barrel 4 Exhaust System Sound
Yamaha WR250X Delta Barrel 4 Exhaust System Sound
YAMAHA WR250R Impression 1
YAMAHA WR250R Impression 1

Did this video help you?

n king: How did u fix the error code on your speedometer

Jesse Montani: does removing the AIS cause an error code?

FOUDESSENCE93: Please please please could you translate in french this vidéo for me i would Like to realize this modification on my bike but i dont understund your english or write it in inglish in a commenter

Edmund Tan: Removing the AIS stops the back-firing or popping sound when you change gears or decelerate. I would assume that it works on the stock exhaust as well. As for the air box flapper mod with stock exhaust. I believed that you will get a power gain. But that power gain cannot be compared to a full system aftermarket exhaust. With the stock exhaust and EXUP valve. It might cut u some power because it is very heavy and the EXUP block your exhaust flow too

Edmund Tan: @Nelonen92 Bro, so long you stop supplying air to the part beside the exhaust port, it stops firing. But, the chrome metal pipe, the rubber pipe and the "actuator" will be bcome redundant. Besides, its quite heavy...so if you remove it...(I actually felt the front steering a bit lighter...maybe I am too sensitive to feel that little difference...hehe) When you hv removed....can let us know if it works?

spaszoid: @UnionOfTheMind No, however removing the Exup servo on your exhaust will. You can buy a premade resistor for about $60 or you can make one yourself for under 5.

90C1500: Does the engine light come on when you remove all that equipment and leave it all unplugged? Doesn't the computer monitor the engine electrical system and throws a code when something significant happens like loss of resistance or signal?

Nelonen92: @only1uv9m Sure thing, Ill be trying it out once I get an aluminium plate somewhere, because I dont have the tools to make it myself.

Nelonen92: @only1uv9m Just thought of something as I was watchin this video again, If you only do the part at 3:30 in which you place a blocking aluminum plate to the hose that goes to the cylinder, would that do the trick without having to strip out the other parts?

Edmund Tan: @Nelonen92 Bro, AIS removal will eliminate the back firing/popping sound completely. Since a combustion needs 3 elements to work; fuel, heat and oxygen. Removing the AIS means stop supplying air(oxygen)from your airbox to the hot exhaust manifold(heat source), unburn fuel from your cylinder flowing out to the exhaust manifold(fuel in gas form)

dovbnia: What about Oxygen sensor on your WRX? AIS removal will 100% affect A/F ratio reads from O2 sensor. So how this will affect FI? Does this means that FI will lean to fit factory A/F ratio (about 14 for Catalytic converter)?

Edmund Tan: Its a Delta Barrel4 from Japan. :)

silverbull2011: nice vid wish i had a bike like that

gbabymesa22: i had a hell of a time putting that 1/8 plug on the vacuum line nobby thingy. Great video man, only one on youtube showing how to actually do it. all these damn "devices" lol

Nelonen92: @Nelonen92 Also, does the AIS mod require you to have a power commander?

erealpe13: very nice and creative im trying to get one like this

roberrv2010: what exhaust is that????!!!!! Regards!!!!

elliotfmx: great video thank you, turn the audio up a bit next time though, bit difficult to hear at times

spaszoid: @viouviou56 Better throttle response, losing overall bike weight, and getting rid of the popping sound the exhaust makes.

Clayton Turner: Thanks! Just removed mine today.

Nelonen92: @only1uv9m Okay, thanks for the info. Ill have to look into removing my AIS in the near future then

jjaacky: hey bro im frm SG too, how much did u get ur wr250x and how much is the delta barrel 4 exhaust?? is yours on big bore right now? i would like to know more cause im planning to get it early next year.. please get back to me..

Nelonen92: Heya, thanks for the great video. Do you know if it makes any difference if you do the flapper mod like you did, or if you entirely remove the top of the box? Does the removal of the AIS increase power, and does it entirely remove the popping sound, because I have a yoshimura pipe on my WRX and Im rather fond of the popping sound :P

Edmund Tan: @jjaacky otr ard 16k, full system including papers is ard $1070. Everything is in stock except the handlebar and some accessories including the exhaust

viouviou56: what is the gain of this modification

chaunster: Damn there are a lot of "devices" on this bike!

Dani Siem: whats the blue stuff ? i mean whats the propper name so i know what to ask for ( im planing on doing this ) thanks, great vid btw

UnionOfTheMind: Doesn't removing the ais and airbox flapper flip a switch and give you an error?

biffg: Good job!

Edmund Tan: @only1uv9m I might do a ram air duct on the side panel at the end of the year when I hv my PC installed.....that ram air duct...I am gng to cut the plastic and position the ram air duct at an angle which is lesser prone to water splash...wonder how it would be like...its just an idea for now

Modern Flamewar: drinking game: everytime he says device, drink one shot. happy dying.

trevorstead1: Thanks for the video mate,from down under.Your a legend

boredazhell20: Great video.... Thank you so much for sharing.

m0nkeycheese: Where did you get your mirrors?

Edmund Tan: If you remove the entire top box....my worry is that its easier for water to go in...(if there is too much water).....I hv extra dirt wheels which i used on tis bike....doesnt do any good if the opening is too big...

Edmund Tan: In other words, you will be releasing fuel in gas form into the environment. The AIS device is some kinda valve which opens and close to supply air. The ABFM makes a huge difference. Like, from stock exhaust to your current racing exhaust...u feel a significant difference....then u get used to it...it doesnt give u any feel anymore...

impleasen: What did you say about the little vacuum line going from the actuator to the throttle body in the last part of the video? Can you just tape the end and zip tie it? Thanks.

Edmund Tan: @only1uv9m Then if you do the ABFM now...u will get increased power again(without touching/alter the inside of the engine).....tis mod is good because it doesn't hurt ur engine..n its free of charge...for extra gain power n response...it doesnt affects fuel consumption as well... I am running stock ECU and I am satisfied with the performance.....I will be changing to PC 5 at the end of the year....believed that its gng to be a completely new feeling again....
Rating:
Yamaha WR250X/R AIS removal and Airbox Flapper Mod 4.8 out of 5

Featured Video

How to Insulate Walls


Yamaha WR250X/R AIS removal and Airbox Flapper Mod