I KNOW this will have been asked before... "Hilltopping"

Phill Elston

Phill Elston

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I KNOW this will have been asked before...

I should apologise - or perhaps not, because there may be many others new to BMW who do not yet know.

What are the pro's and con's of a hilltop remap?

I'm just about to fit an Akra end can on a Euro4 bike... more for the pleasant sound than for performance. The bike already performs better than any other I've had and an emergency response driver, I get my speed kicks at work.

I get it that the remap gives you better power across the entire range... I guess it also smoothes it too. Does it increase consumption? Much?

Having a Euro4 bike is it worth going for the full akra system? Or does that potentially lead to "issues" in 3 years when it goes for MOT and I find that I get a zealous tester? (the reason I decided to stick with the E4 end can)

As I say, sure these questions have been put out there already but...

Thanks in advance for your wisdom, I'm sure your wit... and probably derisive sarcasm too! :augie:clap :thumby:
 
If you KNOW it's been asked before why not then facilitate yourself of the search function, you may then find one of the millions of threads on just this subject...... :)

Andres
 
No cons....apart from 300 quid....all pro's.

Didn't notice any change in consumption.

Didn't change exhaust.

If you want derisive sarcasm, seek out a bod called 'WAPPING'
 
If it wasn't for threads being repeated, and sarcastic tits commenting on it, then the forum would be less busy. Ask away I say
 
I'm having mine done on the 17th June I will let you know after that.

Sent from my SM-G928F using Tapatalk
 
I've had my last few bikes done there. My current Euro 4 Rallye has Akra titanium headers and a Euro 3 silencer. Hilltop smoothed the fuelling, making it run as it should have from the factory.

The thing to remember is that BMW have to put a blanket map on their bikes, to conform with all the different emissions regulations in all the countries they sell to. Hilltop does away with that, and makes the bike run as it should.

Money well spent.
 
The Nutty GSER said:
I've had my last few bikes done there. My current Euro 4 Rallye has Akra titanium headers and a Euro 3 silencer. Hilltop smoothed the fuelling, making it run as it should have from the factory.

The thing to remember is that BMW have to put a blanket map on their bikes, to conform with all the different emissions regulations in all the countries they sell to. Hilltop does away with that, and makes the bike run as it should.

Money well spent.
Click to expand...

Surely Euro 4 is the same all across Europe?

So if it conforms to Euro 4 then IT IS how it was intended to run from the factory? How else did the factory intend it to run if they wanted to sell it all across all the countries of Europe?
 
I've done 1400 miles since mine. Have akro & couldn't tell you change in mpg. I had mine done because of a flat spot an dont plan to change it for a long time. For me it rides much smoother. Highly subjective I know. If you need the bike to run smoother and afford the £300 via John S organised days get it done.

There are divided opinions on the forum which is great and how it should be. Read them and make your own mind.

FWIW - If you think the the bike now runs smooth and feels fine spend the £300 on petrol.
Mike
 
I'm booked in for this weekend so will let you know how the ride home is. FWIW my bike is a 2016 model with an Akra end can and no other mods..
 
Nowt wrong with my old beast I'd spend the £300 quid on petrol, oh my pooch needs his teeth seen to that's much more important, priorities and all that.
 
Had my 2010 GSA Hexhead done last year; it has been decatted with Keihan headers and OEM end can.

The initial dyno run showed a big hole in the torque/power curve around 4k revs and the fuelling ration was utter pants - between 18-22:1 mostly and it did not get to 13/14:1 until about 7,500 rpm, but who rides around at 7,500 rpm all the time? After remapping it now fuels 13/14:1 from about 2500 revs all the way through the rev range making the bike far smoother to ride and much more responsive. If anything the mpg has slightly improved as the engine is now running much more efficiently.
 
Engineer said:
Surely Euro 4 is the same all across Europe?

So if it conforms to Euro 4 then IT IS how it was intended to run from the factory? How else did the factory intend it to run if they wanted to sell it all across all the countries of Europe?
Click to expand...

It may have escaped your notice but BMW are a global company and sell vehicles beyond Europe which what Nutty is referring to.:blast
 
Pros: Stronger acceleration, that really shows around 4000 revs. Smooth in 4th at 30 mph. Bike is more fun to ride. (Wasn't immediately noticeable when I rode home, apparently its intuitive and improves as you go).
Cons: You cant move it between bikes. Declaration issues.
 
Lord Snooty said:
Had my 2010 GSA Hexhead done last year; it has been decatted with Keihan headers and OEM end can.

The initial dyno run showed a big hole in the torque/power curve around 4k revs and the fuelling ratio was utter pants - between 18-22:1 mostly and it did not get to 13/14:1 until about 7,500 rpm, but who rides around at 7,500 rpm all the time? After remapping it now fuels 13/14:1 from about 2500 revs all the way through the rev range making the bike far smoother to ride and much more responsive. If anything the mpg has slightly improved as the engine is now running much more efficiently.
Click to expand...

Glad you've enjoyed you remap, I make no comment on that. But your fueling ratio wasn't 18-22:1 before, that was a gross measurement error (caused by deceleration leading to Overrun Fuel Cutoff before the "pull" and the drying of the intake tract caused by it). This's true on every bmw from the R1100 onward.
 
Engineer said:
Surely Euro 4 is the same all across Europe?

So if it conforms to Euro 4 then IT IS how it was intended to run from the factory? How else did the factory intend it to run if they wanted to sell it all across all the countries of Europe?
Click to expand...

I think the difference is between "BMW having to make the engine run as intended by the Brussels bureaucrats" and "A remap that makes the engine run as intended without any bureaucratic meddling with fueling efficiency...." The engines leave Germany working to satisfy the intentions of Brussels, not the needs of a normally aspirated 4 stroke engine.
 
Lord Snooty said:
It may have escaped your notice but BMW are a global company and sell vehicles beyond Europe which what Nutty is referring to.:blast
Click to expand...

If that's the case then they should still pass Euro 4 after a Hilltop re-map should they not? But Hilltop have already stated that they cannot guarantee that they would pass Euro 4 after their re-map.

It would be interesting to know if the rest of the World has more stringent requirements than Euro 4 for bikes?

But my point about the bike leaving the factory as intended still stands does it not - no manufacturer ships product in any other condition that it intends too - obvious that.
 
Nippy Normans supply Touratech, Wunderlich, Desert Fox and many other makes of accessories.
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