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
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
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
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
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....
Yamaha WR250X/R AIS removal and Airbox Flapper Mod4.9
out of 5