There are many that would argue the SERT is not that good.
I see no need for anything more aggressive for street use than a TFI.
Now I have been around long enough to know many do things to street bikes that make no sense just because they can. I myself have many times.
For the ride that is shooting for the limits the PC111 can be a fine tool. Many would say better than the SERT .
The only reason I would even run a TFI would be to get the most out of a stage1. Other wise I would just leave it alone.
On my 07 Thats what I have done is leave the bike alone. I have been playing with a set of XIED's just to see how the stack up.
Agree that the TFI would be a better choice than the IED's
What some don't realize is that the fuel maps in the stock bikes are lean on the bottom end and a bit rich on the top end.
When you add the IED's which are a constant at all throttle settings, You end up correcting the bottom end and over richening the top end because they are not adjustable.
I would have to put the IED at the bottom of the list above.
...I have also found everyone I have talked to that installed a TFI never switched but I have seen a few switch to TFI from others units...
Lancer, What slip-ons are you running?