guzzipete
Tuned and Synch'ed
I took my V7C to my dealer late last month because it would not idle for more that 30 seconds and the front engine seal was leaking. I just picked the bike up today but not because it took that long to fix. I have been out of the country for almost 30 days.
The idle problem was caused by the engine running too rich at idle. The dealers black box indicated that the ecu was getting a false temperature reading from the engine temp sensor. That was replaced, but the idle problem remained. MG tech support suggested replacing the throttle position sensor and the ecu. After those were replaced the idle problem was solved.
However, when they put the bike on the dyno they found that horsepower was down. It is putting out 36 horsepower and in stock form that figure should be around 40. Their dianostic black box shows that the engine is running too lean above 3.5k RPM. They suspect that the Mistral exhaust I installed is causing that problem. I told them that I have the OEM units and can reinstall them. The head mechanic said not to do that just yet. MG tech support suggested trying a product called MemJet. It fools the ecu into thinking that ambient air temp is colder and denser than it really is and that will cause the ecu to fatten up the mixture. Their mechanic has one for his bike (a Triumph) and wants to install it first to see if the thing really works. If it does, I will order one for mine.
The idle problem was caused by the engine running too rich at idle. The dealers black box indicated that the ecu was getting a false temperature reading from the engine temp sensor. That was replaced, but the idle problem remained. MG tech support suggested replacing the throttle position sensor and the ecu. After those were replaced the idle problem was solved.
However, when they put the bike on the dyno they found that horsepower was down. It is putting out 36 horsepower and in stock form that figure should be around 40. Their dianostic black box shows that the engine is running too lean above 3.5k RPM. They suspect that the Mistral exhaust I installed is causing that problem. I told them that I have the OEM units and can reinstall them. The head mechanic said not to do that just yet. MG tech support suggested trying a product called MemJet. It fools the ecu into thinking that ambient air temp is colder and denser than it really is and that will cause the ecu to fatten up the mixture. Their mechanic has one for his bike (a Triumph) and wants to install it first to see if the thing really works. If it does, I will order one for mine.