Ecu reflash to exact exhaust. Dyno required?

You have a 4th gen?

Yep 2013

A flash might make the tune not needed. You won't know unless you measure the afr after the flash.

My opinion/experience is it doesn't take a lot of extra fuel for a slip that deletes the cat. Drivability and bike smoothness is where a person who flashes the bike earns the money.

If you want to get a Woolich setup a little cheaper, i have the interface box for sale in the for sale forum. You'll safe like 60 or 70 bux total...

this bikes compensate smartly... the gen 4.... stock map vs a fully tuned decat slip on bike, are very very close...

mpp12 said:

this bikes compensate smartly... the gen 4.... stock map vs a fully tuned decat slip on bike, are very very close...

Click to expand...

Wait what? How does the bike compensate?

And a stock map and flashed map is about 15whp difference in the US

sorry, the fuel map stock vs a flash map, in the fuel are max +-5%... in ignition, STVs are way different.

Thanks for the input guys. I've heard that the decat options are close AFR in the past but just wanted some extra advice/confirmation. I'll probably end up purchasing the exhaust soon (I'll probably treat myself to early Christmas and open the wallet for the carbon fiber) and will the send the ecu once the PA weather starts to turn for the worse. im anxious to see the differences since I bought her 100% stock last november

So I got the Guhl ECU reflashed, added Bazzaz, put on a Akra with straight pipe, got a custom map, took it to another place who then removed the secondaries and got more power with another custom. I hated the loud pipe and crappy low end and midrange, so put the cat back on and took it to Attack Performance for a 3rd custom map and clean up to smooth out the rough transition off throttle, got back all the low end and mid range and now am at 185 RWHP with a CAT, and very smooth operation to over 14,000. You pays your money and you make choices. I have spend over $10,000 in options on my Gen 4. Ohlins, gearing, rearsets, brakes, etc, etc, etc. Just saying it ain't so simple.

2 Wheel DynoWorks creates flash files for each exhaust, straight pipe, slip on, air filter etc that rolls into the shop. On every bike, not just the tenners. Some exhausts take different fueling than others, some different timing. So they create a file for each exhaust/mod/combo etc.

nakedinseattle said:

2 Wheel DynoWorks creates flash files for each exhaust, straight pipe, slip on, air filter etc that rolls into the shop. On every bike, not just the tenners. Some exhausts take different fueling than others, some different timing. So they create a file for each exhaust/mod/combo etc.

Click to expand...

very interesting, i just checked out their website. Alot of people seem to happy with Nels work, I've seen that before on here. Just they were a little bit higher in price, so I wasn't sure if the cost disparity was worth it since I'm just looking for the basics; nothing crazy.

mandrews2992 said:

very interesting, i just checked out their website. Alot of people seem to happy with Nels work, I've seen that before on here. Just they were a little bit higher in price, so I wasn't sure if the cost disparity was worth it since I'm just looking for the basics; nothing crazy.

Click to expand...

$15,000 motorcycle and $315 to get the engine proper isn't really crazy to get it running in perfect condition. Free reflashes for life of the ecu so if you ever change exhausts again it's no big deal, no power commanders or ignition modules to buy to then put on a dyno and have tuned, no more software restrictions and everything now working in conjunction with each other perfectly, not much to not love!

I have a yoshi alpha 3/4 on my gen4 and using the woolich auto tuner. Before the idle and "smoothness" will riding were all over the place. After alot of data logging and revisions it idles and runs really smooth.

I just dont get the secondaries off, tale... more power...