[Don Dorfman]

Had one 15 years ago on my own bike. A big learning curve and that said despite getting it all dialed in missing when compared to the Delphi was any form of detonation control and load based spark curve. A speed density system, so throttle position and rpms control spark advance. The Delphi is Alpha-n and uses MAP pressure plus rpm and temperature plus time inputs to adjust the spark. In a performance motor, when the tuner has the ability and understanding to tune this system, it is far superior. Why? Load is taken into consideration. This feature allows running higher static compression without the effects and in a rare case when the motor pings the Ion sensing will pull timing out to protect the motor. Neither the Daytona Twin Tec or the Thundermax have those features.
My 2007 Streetglide had a 107 with 10.5:1 compression and a reasonable 47 intake close cam. Cam was recommended for up to 11:1. Bike pinged while traveling at cruise speed 2700 rpms about and up slight hills. Could I fix it, yes. Pull timing then the bike lost the responsiveness on flats and overall ran hot. Best thing I ever did was pull all that junk off and put the Delphi back on and have Lonewolf tune it in Nanaimo with a TTS. Ran cool and was super responsive. Got rid of a software glitch in their system too that made the bike high idle after a gas stop. Super annoying.

 

[Don Dorfman]

Thanks for the correction you are right about speed density VS Alpha-N. I prefer the Delphi VS the others and if you have a look over at HTT in the dyno section anyone can see that the Delphi doubles as a very good performance controller when tuned by a professional with a flash tuner. Just because a product can improve emissions does not automatically remove it from the possibility of working well in a performance application. Guys like the others because they can be tuned with wide bands just riding them, the AFR that is. It takes a little more fussing and knowledge of computers to tune the Delphi with one of the flash tuners and a dyno is almost mandatory. Then there is the cost. A dyno tune is a fixed cost anybody needs regardless of whether the software instructions says they can be road tuned. The dyno in the proper hands will bring out more horsepower and torque. Timing is what gets overlooked with most tunes and that can unlock power plus help a bike have better driveability and mileage. The better tuners sell the end user a license and for the tune, that's it. No $950 dollar controller is purchased.