Wow.....

 

Stock cam timing would account for a lot of the CCP, but not all. These heads must have really good lo lift flow.

 

So Robin,, Any idea what the rocker ratio is?

 

Typically 4V stuff is 1.5, but I'm looking for anything published.

 

The attached Cold Start file is with the bike now fully instrumented for testing. You can see both cylinders of Real Wide Band data along with all the normal data to see how well the ECM controls the mixture based on what you tell it. Use DataMAster to view the file once you unzip it.

 

I guess if I were to purchase a new e glide I would be pissed. That dyno looks a lot like my evo. 79hp 95 tq.... on a 20 year old bike.

 

Here is a first dyno test run for tuning the new 2017 107 M8 TTS base calibration. Software testing has been going well and making adjustments as needed. Hope to have Vtune up and running before the week is out. We released the 2017 Softail and Dyna for public use today. Touring M8 is next on the list for completion. As before use DataMaster to view the file once you unzip it.

 

Steve, on the touring models, they relocated the sensors up stream closer to where the widebands would be, are you seeing better data? Thanks

 

It's hard to say at this point in time. We are still testing with the stock exhaust and mufflers. The sensor location has always worked well under these conditions for the Big Twin engines. The problems arise with aftermarket exhaust and poor sensor placement most of the time. The O2 heater control has been redone in the calibration to account for the position used on the new M8 as well.

Many sensors have been relocated on the M8 from the previous Big Twin engines. The engine temperature sensor in now in the rear head where it was in the front head before, the intake system is all plastic so the heat the IAT sensor is going to be different. The crank sensor in now down under the engine instead of in the front of it as before. I do not think any of it is better or worse, just different.

The exhaust got a makeover as well, they moved the rear cylinder pipe in tighter to the engine so its further away from your leg and thigh, they moved the cat rearward from the previous location so that heat is a little further back away from the rider BUT closer to the passenger. This caused the cross under pipe to have to change some due to the new cat location. The cat itself is larger than before it appears. The exhaust is about 3 pounds lighter than before too. The exit from the cat is larger so the muffler on the rightside has a larger inlet but it appear to have the same old internal dimensions. This was done so they could get the exit for the cross under pipe in behind the cat. Again, none of this is a big deal, its just different.

 

I like the stud hole spread. Looks like we could make a pretty good size engine out of these.