Welcome to Motorhomefacts, we are a thriving motorhome community (Largest in Europe). Why Not JOIN NOW and get instant access to more of the website. It costs nothing to join and only takes a few minutes. We have 200,000 different people visiting our site monthly and this amount of motorhomers in one place guarantees a fast response to any questions you may have. We also have unique facilities not found elsewhere such as our Online Logbook, stopover tracker, Motorhome directory with Ebay type feedback and the largest repository of motorhome campsites reviews found anywhere
re 2.3 JTD remapping, I should have written, the engine was chipped by TB turbos not remapped. to 137 bhp. I'm not sure if this makes a difference, I've tried reading through the forums but not being an auto engineer I'm none the wiser.
re 2.3 JTD remapping, I should have written, the engine was chipped by TB turbos not remapped. to 137 bhp. I'm not sure if this makes a difference, I've tried reading through the forums but not being an auto engineer I'm none the wiser.
' Chipping' can mean whatever someone wants it to mean really.
There are two ways to change the management system.
One is to add a small box to the engine management system , this can alter a number of things but generally it alters the fueling and sometimes boost pressure.
The second way is to modify the existing ECU by removing ( normally but not always ) the dedicated ' chip' from the the ECU and re programming it.
There are many views on which is best but basically both will enhance the power/torque of the engine.
There are many companies offering this service some good some not so good, you pays your money etc.
It is not done just for performance, in many cases it will improve the drivability of the vehicle by smoothing out flatspots and giving a smother and more progressive torque curve. Manufactures have to take account of various fuels available and therefore ' set' the vehicles ECU to a compromise position which is not always the optmum.
If the vehicle is driven in the same manner as before the reprogamming then it can marginally improve fuel consumption.
The best results are obtained when this is done on a rolling road which enables the vehicle to be set up quite accurately
Generally it will have no effect on the drive train as most components are specced well over their anticipated use.
All my vehicles ( except the van) have had the ECU reprogrammed and the results for normal driving are excellent.
You should however advise your insurance company of any change and of course you will probably invalidate any manufacturers warranty , so be careful.
I almost entirely agree with you John, but with the greatest respect, I disagree with these two points.
reeventu wrote:
If the vehicle is driven in the same manner as before the reprogamming the it can marginally improve fuel
consumption.
the upgrade (chip/remap) if done well should significantly improve performance and fuel economy
reeventu wrote:
Generally it will have no effect on the drive train as most components are specced well over their anticipated use.
If you increase performance to any measurable degree, especially when increasing the amount torque produced, it will put extra stress on all the transmission components, from the input shaft, right through to the tyres.
my experience with over 20 road cars would show ( if driven as before ) around 5% , that to me is marginal. if you use the added performance it could well drop below the original figure.
My latest converted car went from approx 39 to 41 mpg, a figure anticipated by the company after doing many , many cars.
With regard to stress , yes it certainly will increase but never so much as to affect the longevity / durability of the components affected . I can only speak for my cars and others that I have knowledge of ,but if there is a concern speak to a reputable tuner who has a well established business, and can speak with experience.
The one caveat to this is providing the remap is sensible. If the boost pressure is increased too much , to give very high performance gains then I guess it is possible to damage the drivetrain . However I suspect this would lead to other issues before that , such as fuel lines, the turbo itself , manifolds etc etc.
I think what I was trying to say was that the clutch is not helped by the addition of a higher ratio gearbox.
A higher ratio box is fitted because the increased engine power and torque allow it to pull a higher ratio thereby compensating for the additional fuel required by the increased engine power.
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum You cannot attach files in this forum You cannot download files in this forum
All times are GMT + 1 Hour Page 2 of 2Goto page Previous1, 2
France
