Do I need to remap.

[CPJS]

Why is there always this hysteria about getting your bike Hilltopped?

It is not hysteria, it is called enthusiasm, it is why we are here in the first place. We want to share the fact that there is a good thing out there.
Look at a tyre thread just the same thing.
There is a lot of info in this thread ( quite a bit from yourself) Which is useful to those seeking it to form an opinion about something.
When I had my first GS I spent a lot of time looking through these threads, you soon learn to extract useful info from them and can see where the patterns are forming.
KEEP UP THE ENTHUSIASM.

 

[comberjohn]

Why is it frustrating, nutty? I have never knowingly rubbished a hilltop re map.
Like I said, if going down that road it's the only place I would go to.
If anyone complains about problems with surging, vibration or a hole in the power, I generally recommend looking at either AF XiED's or a re map at hilltop. Basing my advice on experience, AF XiED's, or anecdotal evidence on hilltop.
Yes, knew about sending over my ECU and did consider it. If the AF XiED's hadn't worked out, I may well have gone down that road.
What made me hesitate was that I was quoted the same price, £350. No dyno time(yes, probably as sad as the rest of you) and not even tea and biscuits!
Had I been offered even that £50 group discount at the time, I probably would have gone for it. Wasn't Geoff himself, one of his underlings I spoke to.
Ref insurance with the AF XiED's? Declared and no extra cost.
BMW warranty? Not a problem for me. But, if it was, even a chimp could remove them in half an hour. That's something you would have to make your own mind up about.
Like it always says in the small print, each case is viewed on an individual basis.
Unless it's a probably specifically to do with the fueling, I can't see it being an issue.
Now, if was engine paint or flappy valve trouble...

 

[Skid06]

its easy.. DONT sell the headers..sell the can but not the headers, the can does nothing but look pretty on the other hand you can feel the difference straight away with the headers..and for that performance gain you've definitely altered the fueling outside the range of the lambas to cope with..for the sake of a base run on a dyno or full remap to check the AFR, do you really want to be on your 14k - 18k bike when your caning it thinking, is it lean? will it go pop? get it checked, they run lean from new so its a no brainer, Hilltop have done 100's of GS'S Geoff's a great guy he will happily speak to you personally to explain the technicalities AND give you a refund if your not happy

 

[Deleted account 220319001]

To the OP, Will your engine go bang? NO.
Question, why did you put the headers on in the first place? If it was for more performance, you won't have have got any, more noise, yes.
).

Sorry but I have to disagree, I felt an immediate increase in go after I fitted the headers.

 

[Warlord]

....do you really want to be on your 14k - 18k bike when your caning it thinking, is it lean? will it go pop? get it checked...

That's properly scaremongering and bang out of order (excuse the pun).

I've never blown up a stock engine from caning it as it was made from the factory.

And nobody should suggest that either unless you want to be sued by BMW UK for defamation and libel.

Give me Ten examples out of Thousands sold. Jeeze..

Its this heavy handed sales speil on remaps that makes it a mugs game.

 

[Skid06]

That's properly scaremongering and bang out of order (excuse the pun).

I've never blown up a stock engine from caning it as it was made from the factory.

And nobody should suggest that either unless you want to be sued by BMW UK for defamation and libel.

Give me Ten examples out of Thousands sold. Jeeze..

i didnt say it will...its not running stock with De-cat after market exhausts..i want the guy to have peace of mind

 

[Warlord]

i didnt say it will...its not running stock with after market exhausts..i want the guy to have peace of mind

Yeah fair enough, I'll do one as its bringing back memories of a previous experience I had. My apologies.

 

[Rederic]

To the OP, Will your engine go bang? NO.
Question, why did you put the headers on in the first place? If it was for more performance, you won't have have got any, more noise, yes.
A remap gets you what you were probably after in the first place. Sell the headers, use the money for a remap, and you will have a better running bike.
And a couple of extra mpg thrown in for free.
Thinking about it, the extra mpg over time makes it a cost effective exercise. There you go! Get it remapped for free ( eventually).

Sorry to say you must have never tried one with akropovic headers fitted
As the difference is there straight away and the extra 10 miles to tankful I am getting since putting on 20,000 miles ago have helped to pay for the headers
It even sounds a whole lot better with the cat out
That's just my honest opinion

 

[Deleted account 200123001]

Sorry for the 100 questions. I had hilltop done with stock headers and akra slip on and you said ecu would auto correct after headers

The ecu should adapt but only as an "average" accross the range its not able to adapt to localised changes in a limited band of rev range.

Fitting decat headers may change the flow characterics giving localised richer and leaner spots...

So as Nutty says it's always better to have the remap done once all the phsyical changes have been done else...as then the fuelling and ignition mapping are matched to your hardware.
Where as now your hardware and software may be out of sync...however take solace in that as you have already had a remap done the engine will still be in a better state of tune than had you not had it done....so I would say only have a remap done again if you want to ensure everything is spot on.

 

[CPJS]

Sorry to say you must have never tried one with akropovic headers fitted
As the difference is there straight away and the extra 10 miles to tankful I am getting since putting on 20,000 miles ago have helped to pay for the headers
It even sounds a whole lot better with the cat out
That's just my honest opinion

The arse dyno is a very unreliable instrument.
I have had two GS's with full aKro systems added as bits at different stages;
My findings backed up by the dyno.
Both bikes pre remap with a full system produced 99 and 102bhp
Adding a can on it's own....more noise no gain.
Adding headers on their own... More noise, smoother no noticable gain.
Full system even more noise and smoothness but no noticable gain.

 

[Deleted account 220319001]

Well I musta imagined it then.

 

[Skid06]

me too...i fitted em, went a ride around the block and instantly pulling away in the lower gears there was a very noticeable difference .. my arse is the best Dyno