[Jblackwell205]

Hey guys, new here. Recently bought a 20’ Yamaha Kodiak 700 EPS. I have researched hours on the AIS delete topic, but still haven’t found an answer for me. I 100% plan on doing it. Just trying to figure out is it better to buy the block of plate and delete the system completely or just plug it at the air box as many are doing? I am semi mechanically incline but new to the AIS. Wouldn’t if you just plugged it at the box the system would still be “working” to send fresh air in, even though it would be restricted from doing so? Looking at a reliability thing. Would it cause harm over time to the engine by simply plugging it and the system still trying to work vs just deleting it completely? Thanks!

 

[JimP]

With a plug at the air box you are completely blocking the air into the air box from the hose. There is no way for any to get through.

Doing it this way gives the indication that you are still stock and some people like it that way.

Using the block off plate just eliminates the hose from it.

 

[RedRocket]

@JimP fully agree with you. I know Jblackwell205 is concerned about any long term effects of blocking off the hose into the air box and I'd say it is a chance worth taking. Something I just did to my Grizzly. Long term effects on the rest of the system needing air to burn remaining fuel after the cylinder chamber is really unknown. Only real way to know is if someone reports back having had theirs blocked off for X amount of hours/Miles (KMs) with no negative issues. IIRC, this only came about from model year 2014.

The AIS was obviously a way to reduce emissions for "California" approval. I'm not concerned about having mine blocked off. I've not read of any real issues from having done it.

 

[Jblackwell205]

@JimP fully agree with you. I know Jblackwell205 is concerned about any long term effects of blocking off the hose into the air box and I'd say it is a chance worth taking. Something I just did to my Grizzly. Long term effects on the rest of the system needing air to burn remaining fuel after the cylinder chamber is really unknown. Only real way to know is if someone reports back having had theirs blocked off for X amount of hours/Miles (KMs) with no negative issues. IIRC, this only came about from model year 2014.

The AIS was obviously a way to reduce emissions for "California" approval. I'm not concerned about having mine blocked off. I've not read of any real issues from having done it.

Pretty much what I figured! Was just curious since it is coming from the cylinder head that maybe without it “injecting the air” it could be over pressuring the cylinder or having no effect on the cylinder at all! Thanks! Sounds like everyone has had zero negative results So far that’s always a good sign!