Originally Posted by Bob R
So, if I am reading this right.
Getting the GiPro negates the need to remove the secondaries. As my R3T (2013) is new, a lot of items are only listed up to 2012 at this point. My plan is underseat K&N, TORS and GiPro. Is that a reasonable combination to get this things HP back to a reasonable range?
There's no reason to physically remove the secondaries if you can get them to open 100% using either hardware, like the Gi-Pro, or software, like TuneECU or Tuneboy.
The Gi-Pro TRE function (timing retard eliminator) fools the ECU into thinking the bike is always in the same gear so that it will use the tuning settings for that gear in the other gears. This is usually used to apply the timing parameters (advance) of a higher gear to the lower gears.
In the case of the Rocket, the tunes close the secondary throttle plates as a function of gear and RPM. So, the Gi-Pro could be used to open the secondaries 100% in the lower gears but only if the tune in the ECU has the secondaries OPEN 100% AT ALL RPMs in the higher gear. In fact, there are some Rocket tunes which have the secondaries open 100% at all RPMs in 4th and 5th gear. For example, the original R3 with stock exhaust.
But this is not the case for the R3T (or the new Roadster), as I explained above. There is no gear for the stock R3T tunes where the secondaries are open 100% at all RPMs. So the Gi-Pro will only apply the same closed secondaries profile from the higher gear to the lower gears. Worse, if you take the secondaries out, you will effectively have them open 100%, letting more air in, but the ECU is fueling the injectors thinking the secondaries are closed. So if you rip out the secondaries, you have to change the secondaries table so that it specifies 100% in all gears at all RPMs.
Option 2 is to get TuneECU for free, buy the cable for $20, or Tuneboy for $500, load the R3T tune for TORs into your laptop, change the secondaries table so that 100 is in every cell, save the tune, and download it into the ECU. Presto, your secondaries are open and your power is unrestricted.
However, there is a potential problem with this solution. Since the stock tune closed the secondaries, it also had to limit the fuel or it would have been running rich. When you open them up in the tune with TuneECU, the ECU doesn't necessarily add back the fuel, so the bike may run lean. I had assumed that when the secondaries were reset from say 50% to 100%, the ECU would compensate and add fuel just by recalculating. Wayne-Tripp disagreed and I tend to believe him since he's an expert.
No matter how you deal with opening the secondaries, you need to make sure there is enough fuel to match the additional intake air. Do this by having the A/F checked on a dyno.
If it is too lean, you can add fuel by having the fuel remapped using TuneECU, Tuneboy, or a PCV.
I believe there is an option 3. The PCV allows for fuel trimming in each gear. I'm not sure if this applies to the R3T. If it does, you can rip the secondaries out and have the fuel re-trimmed for the extra air in each gear as a function of RPM. This will account for any differences in the secondaries table between gears.
If you thought this was going to be simple, it's not. A lot of people do things to these bikes but they're not necessarily good things. If you really want some good advice, find Power-Tripp on this forum, PM him, and ask.
Warning: TuneECU cannot be used to load maps into some of the new Triumph models. This will kill the ECU. The Rocket is not one of those models now but anything could happen in the future.