[5150 Pops]

And this is why I'm asking will it damage my motor

As I said before, and not one person has chimed in to take an adversarial stance.

Crispy(burnt) exhaust valves could be in your future.

 

[macca_779]

Apples and oranges, z

He installed a "straight pipe" in place of his muffler, he's concerned he may have "gone too far", and my vote is yes, for the reasons I provided. Has nothing to do whether the bike has been " tuned". The ECU can only compensate so much through the narrowband sensors, and he's opened his "exhaust" far passed what I'd suspect the ECU is capable of compensating.

The ECU can compensate far more than a simple exhaust change could ever net. Running E10 would represent more of a change

 

[irelandjr]

Crispy(burnt) exhaust valves could be in your future.

I respectfully disagree with this statement. The minuscule back pressure made from a straight through muffler (non-baffle type) is not going to make any difference in the closing force of the valve by the spring in the head.

I've read and heard people talk about this "potentially" happening for years but have never seen any negative side effects. I don't buy the myth.

$0.02

 

[s1000_swe]

Reading this thread and trying to understand various things regarding the S1K and its fuelling system I have found these facts.
The bikes does Not run rich from factory if they do it is very little.
The ECU is adaptive but only to a certain degree. Normally only +-10% or so. There is a reason why people get a lot more grunt from the bikes after a proper flash and tune.
Four of my friends have fried their engines due to running lean.
Installing a High Flow air filter and a full (Open) system will definitely make the bike run very lean.

There is a bit different fuel here in Europe, 95 octane is the base and 98 is premium fuel. Quality should be the same.
It is also a big difference what you use the bike for. Running on streets opening the throttle occasionally and you will most likely be fine.
But racing your bike is a different matter.

I have just finished building my bike and had it out on track over the weekend. It was very clear the bike was running lean since the inside of the exhaust was all white.
Next thing for me is a proper Alpha Racing re-flash and a day on the dyno to get it tuned. I do Not want my pistons or valves to be burnt.

 

[Frankenthe3rd]

You will be fine engine wise. I got a fix-it ticket in Calif for running straight pipes.

the bike is pig rich from the factory so you will be fine. it feels faster because it probably is faster. taylormade makes less hp than the stock system. lol

I like it the way it is right now, I'm not looking to gain any extra HP then I already have. My biggest concern is, if I leave like this will I be harming the motor in any way? meaning no tune or anything?

"You will be fine" does not appear to be sound advice, nor am I getting the impression that anyone actually knows what AFR the stock system uses, what AFR his system will be using with the TaylorMade and what AFR his system could potentially be using with the straight pipe that's been attached to it.

Bottom line, risk is yours. As some have suggested, it may not damage anything, but you're a far cry from just a slip on in place of the stock can with factory headers/cat etc.

Either way, your bike will not be working as well as it could by getting a tune. Rich or lean, then it will benefit and remove the uncertainty if you have it properly tuned. May be worth the few hundred to save yourself some issues down the track... or, you might enjoy the extra HP/Torque more.

 

[jrocmotivation]

the real problem here is putting a taylormade exhaust on your bike....

 

[Jagman]

The real problem here is at least one person giving advice, as usual, who has no first hand experience with a full system on a motorcycle. He still can't resist educating others. I'll let you guess who.

 

[5150 Pops]

Finally we have a conversation......

 

[V10Rizz]

Looks and sounds good !!

 

[5150 Pops]

I respectfully disagree with this statement. The minuscule back pressure made from a straight through muffler (non-baffle type) is not going to make any difference in the closing force of the valve by the spring in the head.

I've read and heard people talk about this "potentially" happening for years but have never seen any negative side effects. I don't buy the myth.

$0.02

"You will be fine" does not appear to be sound advice, nor am I getting the impression that anyone actually knows what AFR the stock system uses, what AFR his system will be using with the TaylorMade and what AFR his system could potentially be using with the straight pipe that's been attached to it.

Bottom line, risk is yours. As some have suggested, it may not damage anything, but you're a far cry from just a slip on in place of the stock can with factory headers/cat etc.

Either way, your bike will not be working as well as it could by getting a tune. Rich or lean, then it will benefit and remove the uncertainty if you have it properly tuned. May be worth the few hundred to save yourself some issues down the track... or, you might enjoy the extra HP/Torque more.

In the end, the only certainty is none of us know, with absolution the long term results of running your bike in it's current state, because NONE of us has had this first hand experience with that bike, in your environment and circumstances.

All any of us can offer, at best, is conjecture based on experience or gossip.The experience offered is generally based on a completely different platform as well, so again, it is not infallible.

If you are uncomfortable then you'd be wise to wait until your replacement muffler shows up, rather than take advice from several anonymous keyboard jockeys, including myself and potentially make yourself very unhappy.

I'll raise you .005 cent @irelandjr
:smile2:

Btw I did say Could, not certainly, nor will

 

[irelandjr]

The real problem here is at least one person giving advice, as usual, who has no first hand experience with a full system on a motorcycle. He still can't resist educating others. I'll let you guess who.

Rhymes with p00.

 

[z00]

OP,

Before some fools start hating. Just to be clear, I said you will be fine assuming you're riding with straight pipes until you get your exhaust. Long term no one can tell you how your engine will be. On Jap bikes it's common to run full headers with straight pipes. So that's another aspect to consider.

BTW I rode with straight pipes with servomotor cable removed for months, bike ran fine. Just louder. My friend (an inactive member on here) has been running his bike with straight pipes without servomotor for a year. No issues so far, dealership services it fine, they just tell him how can he handle the loudness. He did get a couple of fix-it tickets as well.

I highly recommend you wear ear plugs. Helmet alone is not enough. Hearing loss occurs gradually. Don't risk it.

 

[wfo439]

OP,


BTW I rode with straight pipes with servomotor cable removed for months, bike ran fine. Just louder. My friend (an inactive member on here) has been running his bike with straight pipes without servomotor for a year. No issues so far, dealership services it fine, they just tell him how can he handle the loudness. He did get a couple of fix-it tickets as well.

A disconnected servo motor with a Racefit can does not a straight pipe make. You still have the cat and the back pressure it creates. You were not running a straight pipe. Clearly you know this or you would not have created these threads:

http://www.s1000rrforum.com/forum/exhaust-fuel-delivery/170929-help-full-system.html

http://www.s1000rrforum.com/forum/b...m.com/forum/bmw-s1000rr-general-discussion/167689-arrow-gp2-can-ti-headers.html

Headers, midpipe (like the HP4 688 link pipe) and no can or headers, midpipe and an open megaphone would be examples of "straight pipes. :wink2:

 

[z00]

^ cat removal increases HP by 1-2 max. No, I'm not pulling this out of my ass. Members posted their dyno results and there are some on youtube as well. Not that I have big faith in dynos.

Muffler servo is mostly for noise reduction, it does add some back pressure < 5k RPM. However, the key variable for back pressure is header servomotor.

We have some members on here who decat their OEM headers. Running fine without a tune. OP question was whether his engine will be fine or not with straight pipes. Performance is not his top priority. It' clear from the fact he went with a Taylormade full system which is known to have less power than OEM.

 

[ahsanrt1988]

Just keep the damn pipe man. It won't **** anything up. Quit worrying and enjoy the ride


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