AIS - Reed Valve Location?

[bcar00]

This seems like such an obvious question, but before tearing apart the bike, has anyone done the AIS blockoff?

SmartMoto Electronics

Exhaust Servo Eliminator, o2 sensor eliminator, PAIR/SAS eliminator kit, side stand switch eliminator, Suzuki Smart TRE and more!

smartmoto-electronics.com

Where are the reeds (and new plates) located, and what do I have to do to access them? The instructions and Triumph service manual "seem" to indicate they are on the intake (left) side of the bike. Given the purpose of AIS is to supply extra Oxygen to the exhaust, that sounds wrong. What am I missing?

 

[atomsplitter]

You can use this thread and an AI search engine to find videos, pics, or step-by-step instructions. The air injection pair valve will be on the intake side of the motor with a hose to the exhaust side of the motor, all located on top of the engine, so tank removal is a must. For general information on pair valve removal watch this video: The AIS delete starts at 2:23 into the video if you want to skip ahead.

 

[rick danger]

This seems like such an obvious question, but before tearing apart the bike, has anyone done the AIS blockoff?

SmartMoto Electronics

Exhaust Servo Eliminator, o2 sensor eliminator, PAIR/SAS eliminator kit, side stand switch eliminator, Suzuki Smart TRE and more!

smartmoto-electronics.com

Where are the reeds (and new plates) located, and what do I have to do to access them? The instructions and Triumph service manual "seem" to indicate they are on the intake (left) side of the bike. Given the purpose of AIS is to supply extra Oxygen to the exhaust, that sounds wrong. What am I missing?

I put that smart moto kit on. the reeds are behind the air filter housing on the left side. you'll want to raise the tank, and take off hoses on the right side too.

 

[vsteel]

What is the benefit of removing the AIS?

 

[Idaho Red Rocket 3]

Jeff you beat me to it. I would like to know as well. Considering this mod for my 2023 R3 GT and 2022 T120.

 

[Claudiu]

Here you have the SAI reed valves on the left side of the head cover.

 

[rick danger]

What is the benefit of removing the AIS?

Jeff you beat me to it. I would like to know as well. Considering this mod for my 2023 R3 GT and 2022 T120.

I was hoping it would lessen the decel popping. I think it did a little. I take off all the emissions stuff from my bikes. I like the less clutter for doing maintenance and just less chance for ,say, a vacuum leak on one of the hoses, or failed solenoid. whatever. there's enough stuff jammed under the rocket gas tank as it is.

 

[bcar00]

Here you have the SAI reed valves on the left side of the head cover.

Oh, thanks for the pics! I wonder how they're routed to the exhaust? Through the head or valve covers? Accedemic, at this point but still curious.

 

[bcar00]

What is the benefit of removing the AIS?

No real "benefit" for most people. I just know that I can more easily calibrate out the decel pops without throwing a bunch of raw fuel at the problem without AIS throwing extra air into the exhaust. For my Cat free exhaust the AIS serves no purpose. In fact, the extra fuel makes emissions worse. Also, it looks like removing the AIS system will free up room for future maintenance. I wouldn't bother if I wasn't already taking everything apart for air filter and plug replacement.

 

[atomsplitter]

What is the benefit of removing the AIS?

To answer your question, the AIS is a means of burning all the unspent fuel in the exhaust system. With modern fuel injection systems some raw fuel goes down the exhaust manifold and is burned by adding enough air to ignite it. This burning creates a pop in the exhaust that OEM systems are designed to muffle to the greatest extent possible. Aftermarket high flow exhaust systems aren't designed to quell that noise and thus you hear what's always there but drowned by the OEM silencers and collector. Removing the pair valve and blanking off the air porting reduces the total combustion in the exhaust so the popping is reduced. It cannot be completely eliminated as there will always be some fuel in the exhaust manifold with EFI systems due to the valve overlap on the exhaust and intake strokes. What can be done is get it to an acceptable level, that usually entails removing the AIS and then adding a bit more fuel at the bottom end of the fuel tables for the last 6% to 10% of throttle.