Are these things kosher (or do they actually work?)
http://www.bhpplus.co.uk/?utm_source=emailnewsletter&utm_medium=email&utm_campaign=march12B
http://www.bhpplus.co.uk/?utm_source=emailnewsletter&utm_medium=email&utm_campaign=march12B
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unruly1986
Sergeant
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You are best off getting it done at a specialist tuning garage where they tune it to YOUR car. There are meant to be many +ves such as better mpg, more torgue, bhp etc.
steve_k243
Sergeant
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Brabus do them for Mercs, they can be fitted by Merc dealerships, even on brand new cars and the warranty is not affected.
I don't think i'd get a chip/box. I had my old VW T4 bus remapped by a specialist and it's definately worth the extra money.
Before they even touch your car, they do a fault log check to ensure there's nothing nasty lurking in the system. Then they should do a pre-tuning dyno run to get the base performance figures. This is followed by flashing their software onto the ECU and finally another dyno to prove the increases. I had my T4 taken from 105bhp up to 140bhp with an increase of torque up to 240 lbft.
Before they even touch your car, they do a fault log check to ensure there's nothing nasty lurking in the system. Then they should do a pre-tuning dyno run to get the base performance figures. This is followed by flashing their software onto the ECU and finally another dyno to prove the increases. I had my T4 taken from 105bhp up to 140bhp with an increase of torque up to 240 lbft.
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What difference did it make to your fuel consumption?
I've had both my Polo 1.4 TDI and my Eos 2.0 TDI re-mapped by the nice men at Superchips. The chaps at Superchips tell me it's been done at a level that the VW dealer's diagnostic computer can't see - both cars have had a VW dealer service since being tuned and the dealer has said nothing. My Polo has been nudged from about 70bhp to 99bhp and my Eos from 140bhp to roughly 170bhp. Unless you use the extra urge, and I only use it to help overtaking, fuel consumption isn't changed very much - the car will still need the same power output to cruise at the same speed as before which will need about the same amount of fuel.
It hardly changed mate, all that extra torque meant less cog swapping for the hills and for overtaking. Around town it may have been a little worse but it really came into it's own on faster roads.
N
NotAnIDOYet
Guest
Remapping the ECU might be a better option - remember you are less worried about total power with a motorhome, rather the torque and its delivery at low revs. It is a heavy vehicle and you need low down grunt to get it moving.
Do you have cruise control? This can help with the fuel consumption on better roads/longer runs. Sometimes worth getting this retro-fitted if you dont have it.
DT_Xtremez_39:
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Your right about gaining in one area but losing in another. The stock map on any motor vehicles ECU is set to ensure maximum longevity of the engine. Typically this means the map is rich ( To allow for idiot drivers using **** fuel, poor servicings etc ) in the rev range which most drivers find themselves in eg 2000 - 3500rpm for petrols and slightly lower for diesels. A remap or aftermarket chip 'trims' this fuel back which slightly increases wear on the engine but allows more power to be developed.
Use a decent fuel of the correct Octane / Cetane value and keep it serviced correctly to ensure this accelerated wear is kept to the bare negligible minimum.
I could go in to it in more detail but it's a huge subject and thus plenty out there on it
Use a decent fuel of the correct Octane / Cetane value and keep it serviced correctly to ensure this accelerated wear is kept to the bare negligible minimum.
I could go in to it in more detail but it's a huge subject and thus plenty out there on it
Not really as the manufacturer has to create an ECU map that will be able to run on everything from the new super diesels to stuff that is practically chip fat. It also has to be able to make the car run fine using a bunch of components made to a cost within whatever the manufacturing tolerences are, with an added factor for safety and reliability.
These boxes run ontop of the normal ECU and provide altered false values so they can produce more power.
A remap of the original ECU is better, as all the safety functions, and different start maps are un altered, and the ECU is reading un modified sensor readings.
On reliabilty if you were driving the vehicle flat out all the time reliabilty might suffer, but as you spend most of your time just driving normal and not stressing the engine to much in reality reliability isn't affect to much. Also if supporting mods are also included for instance better air filter (even using existing induction system), and free flowing exhaust with sports cats etc you can increase fuel efficiency.
needsabiggerfuse
Flight Sergeant
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There was a noticeable difference in the available grunt on the 'Fuse Mobile when I replaced the fuel filter. The old unit was a dirty, grubby little thing.
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I've used these guys a couple of times on my old 306 and Rover 220d
http://www.thedervdoctor.co.uk/
They put an average of an extra 26bhp power on them and fuel consumption also improved. They could have tuned them further but that was enough for me at a reasonable price
http://www.thedervdoctor.co.uk/
They put an average of an extra 26bhp power on them and fuel consumption also improved. They could have tuned them further but that was enough for me at a reasonable price
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The extra MPG comes from the 'trimming back' of fuel on the stock map as already mentioned. If the driver was to drive as before they will notice this saving but more often than not they quickly get used to the extra oomph available so gain a better driving experience instead.
Z
Zeebad
Guest
Tunit. I have run my Audi 2.5 v6 on one for at least 7 years. Performance and fuel economy gained has paid for itself easily 3 times.