Use the search function. This subject has been discussed often. Your best bet is to get a custom tune. There are many vendors who do just that on this site... I have a PCV on my 2014 with a full Titanium Akrapovic system with a customer tune by a local Dyno shop. I feel I gained more power than just letting the computer "Adapt" to the new exhaust.

 

I have answer from Akrapovic: They say i dont need a remap my ecu

 

You don't NEED to, or HAVE to, but to get the best out of your expensive Akrapovic system, you SHOULD get it remapped to get the best out of it. Don't do a power commander, get an ECU tune custom done. Use the massive amount of knowledge and experience gained by members on this site and just get it done correctly.

 

With the OEM fuel trims it will adapt just fine. In fact the standard exhaust system is so good I doubt you'll net much if any gain anyway as the volumetric efficiency of the engine will barely change. That's comparatively if stock exhaust and aftermarket were both tuned.

So no. You don't need a power commander for an aftermarket exhaust in much the same way as you don't need one for the standard exhaust. If you wish to spend more cash to have some guy who may or may not know what he is doing to extract 1 or 2 more HP then go for it. But gone are the days of the OEM shipping such highly restricted exhausts that big changes in engine VE from changing it out warranted mandatory tuning to accommodate

 

It would be very interesting to see AFR curves for an S1000RR before/after a full exhaust install without a tune.

 

I'd say that because of the requirement to be EPA compliant and the catalitic converter gone, having a customed tuned PC-V is one of the ways you know you're getting most of your engine. I say most, because apparently the PC-V doesn't get rid of the OEM ECU restrictions that a Brent truning flash would get you (as they claim).

So yes, my plan is to eventually do a Brent tuning + PC-V with a custom map via dyno.

 

Just took my 15 S1RR for it's maiden voyage after putting on the full Yosh system and it sounds fantastic, but runs like crap!! I'll keep reading on here to discover which route is the most favored by the masses, but something has to be done.

 

Can you explain exactly what you mean by runs like crap? Dead spots in the power curve? Not idling right?

 

idling very rough, also when holding the throttle steady at RPM, at times it sounds like its down on cylinders, then it clears out for a few seconds. On the throttle it smooth's out perfectly. My buddies say they had the exact same problem before they got it tuned either with Bazzaz or with the ECU unlock. One of them has a full arrow and the other a full Akro.

 

ECU unlock meaning HP unlock codes or ECU flash?

 

I would like to know this too because i want to flash my ecu to take off whatever restrictions are left from factory but run a bazzaz for the tuning. Ive been doing research and that doesn't seem possible cause when i contacted brentune he was basically stating not to use a bazzaz with the flash but i had two buddies have issues running the brentune flash with no tune both 15'. I have the akrapovic evo exhaust, and sprint filter, iat relocation done too so my next step is a flash and tune and mine is also a 15'

 

What issues are your buddies exactly having with BT? I keep hearing the good and the bad about it. I need to figure out what tune to get.

 

Bren is also an option >

 

^ Keep us posted on what you go with.

I was going to go for HP unlock code sport exhaust. Then realized it's meant for headers with cats.

BrenTune seems to be a hit or miss. I have seen some videos on heating issue.

Rapidbike improves things but all of magic is in ECU, so RB won't be enough.

Looks like RK3 is the way to go. But it's the most expensive and voids warranty.

Would it be bad I put TI header and kept stock ECU? no tune.

 

I mean i'm doing akra ti header now and the bike runs fine but its just rich, atleast mine does. It has the power to hit the rev limiter. So i gotta gear down for now. I still can't decide to me the flashes are all about the same and some will run fine and some need tweaking. From what i see in my area they need slight tweaking. I want the flash but also the rck3 but we are looking around $2700-$2800 for everything. Which is crazy money. That price is for all the codes and capabilities you would ever want. My guy i want to do the tune says run a bazzaz then he can tune it otherwise i need the software. So i was thinking a good tune with stock ecu should still run hard just cant get all the little things you get in the flash that get you that extra hp. but its half the cost. Im trying to get the bike at 200mph in a certain distance so might do that with gears and call it a day but i want it to run at top notch since ive already splurged on the exhaust and all the other little things.

 

I would consider Rapidbike over bazzaz. It allows ignition mapping as well as adaptive fueling. Not as many options as the ecu flash though. Mine should arrive today and I'll be doing the install myself over the next week. I'll post up a report once I get it up and running to see if I feel any power gains.

 

for me no. The stock bike has all the power i need. I doubt anyone one of us will ever use 100% of the stock performance power.

 

Spot on....

 

The ECU will self tune for closed loop operation (low to mid throttle), but when it comes down to open loop operation (high throttle) where the o2 sensor output is ignored, you will be down on power. The only way to correct the open loop map is via piggy back (PC, Bazzaz) or to flash the map on the ECU itself.

Also someone in the thread mentioned the bike sounds like its down a cylinder on coasting. Well that's because it is. It has nothing to do with your exhaust system.

 

Having the OEM ECU mapped sounds like you would need to have a professional race team engineer. The pc5 makes things a lot easier and accessible. And if you don't like the tune or want a more fuel efficient map, you can make the changes in your own garage.

 

Mods

It appears the day has arrived with this bike where the factory has gotten it just about perfect in terms of minimizing the necessity of most performance mods, especially with the exhaust for 2016.

The trend has been coming. I have a MB G63 which needs absolutely nothing in terms of performance enhancement. I have an Audi S5 Cab which sounds like a dream banging off shifts in sport mode. I wouldn't change a thing.

By comparison I have a 2013 GT500 convertible which is simply mental with headers, tune, pulley, filter, etc.

At the highest levels of (German) engineering manufacturers are making performance mods as unnecessary as upgrading your sound system. I never thought I would see the day.

My new Double R will be ready in a couple of weeks after covers, sliders, laser jammer/radar detector, etc are installed.

I think it's going to be fast enough dead stock. If you calculate the power to weight ratio of 2.26 lbs. per 1 BHP, 450#/199BHP, a LaFerrari or McLaren P1 at 3.7:1 to 3.8:1 gets smoked.

I can't wait.

 

Won't stop people from modifying. It's in some people's nature.

 

Yep!

Not everyone who installs a full exhaust does it as a performance mod either.. Some just want the sound or the looks, and then the PC-V to optimize the A/F.

 

Regarding the older posts. I suggest a remap. After my full exhaust and throwing a pc5 on, i was 183 and my afr was super wavy (no pic) after dyno. Its super smooth and 190 to the wheel.

 

I am going with a Akra full line wit a long can, sprint filter already in place. I was going with bren to unlock the ecu followed up with a bazzaz & personal tune, but they only have a pre-loaded map hand held system. I was looking more for a mail in for my '11 but that can't be done. Having a hand held unit in my tool chest collecting dust wasn't my thing. So for now just getting the baz & dyno and see how that goes.

ps.. the s1k does need a remap or piggy back system and a dyno tune. Each location has different elevations and the % of oxygen differs. Or s1k can only make up for so much for the bolt -ons we r doing.

 

My $.02. I considered putting the full titanium Akra evo system on my bike, with no ECU remap. The system looks great. The dynotune results are shwon on the Akra website, and it shows increased performance throughout the entire RPM range. No changes were made to the ECU and no fuel controller was added. I am sure maps / controllers would take the system further and compensate across a variety of environmental factors, but I think with pretty high probability you'd get improvement with the exhaust alone. In the end, I didn't use the full exhaust and used a slip-on instead because I wanted better looks/sound, and the Remus hypercone slip-on could accomplish that.