Hi Guys,
It's been a busy time these last two weeks. A Honda Grom cylinder is out to the production machineshop to time how long it takes to install the 61mm sleeve. The Grom SLS head gasket & a CMM dimension sheet went out to the gasket manufacturer. I thought I would post a few photo's of the prototype exhaust system, that I just finished. I got to ride it for the first time today. I finished my billet air box inlet, and mounted the O2 sensor. I was very courious how the ECM would react to the changes, and the decrease in back pressure. I also removed the gas tank vent system. So there were a few major changes. The ECU seemed to handle the changes in normal fashion. It ran most of the time at 14.0/1, 12.8/1 under hard accel, 14.7/1 backed off throttle @ 50 mph. What's interesting is that the exhaust gas temp never got over 780'F. I would have thought closer to 1100'F or 1200'F for a cat. engine program
Brian





It's been a busy time these last two weeks. A Honda Grom cylinder is out to the production machineshop to time how long it takes to install the 61mm sleeve. The Grom SLS head gasket & a CMM dimension sheet went out to the gasket manufacturer. I thought I would post a few photo's of the prototype exhaust system, that I just finished. I got to ride it for the first time today. I finished my billet air box inlet, and mounted the O2 sensor. I was very courious how the ECM would react to the changes, and the decrease in back pressure. I also removed the gas tank vent system. So there were a few major changes. The ECU seemed to handle the changes in normal fashion. It ran most of the time at 14.0/1, 12.8/1 under hard accel, 14.7/1 backed off throttle @ 50 mph. What's interesting is that the exhaust gas temp never got over 780'F. I would have thought closer to 1100'F or 1200'F for a cat. engine program
Brian




