Engine re-mapping
Has any member had a diesel engine re-mapped, and if so was it worth it?
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had my Cherokee re-mapped about 3 weeks ago. 170 to 200bhp and torque up from 350 to 420. runs great and can feel the difference solo but not towed yet. should be ok though and help with mpg I hope. would not use one of the plug in one's as they just cheat the engine to think its cold so forces more fuel to engine. that's from a top jeep mechanic.
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Had my CRV remapped last summer and really pleased with the result. I get about 50 miles more to a tank of diesel. Pulling power really good. Wasn't cheap but I'm happy to pay that price.
From my supplier:
Yes we can do your honda crv it should have a bosh edc17 ecu which will be tricore protected. We quote around 30-35bhp and 70nm on average on those. Price would be £180
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I’m interested in this issue and wonder -
- Did you re-mappers tell your insurance companies and, if so, what was the response?
- Have any of you experienced problems at MOT because your emissions have been altered?
- Have any of you had problems claiming a repair under warranty due to the re-mapping?
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Yes all three points would need answering for me to consider having a re-map.
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I had a PowerBox fitted to my new at the time '55 Kia Sorento, I also fitted one to my new at the time 57' Toyota Hilux, I now have a Steinbauer unit fitted to my '14 Toyota Hilux and been very satisfied with all three vehicles compared to as they were originally.
Cheap is expensive if it's no good !!
Happy caravanning.
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Posted on 07/03/2018 18:51 by Tinwheeler
I’m interested in this issue and wonder -
Did you re-mappers tell your insurance companies and, if so, what was the response?
Have any of you experienced problems at MOT because your emissions have been altered?
Have any of you had problems claiming a repair under warranty due to the re-mapping?
Tinwheeler has asked some sound questions.
Another question on the Jeep remap,
Was the auto gearbox reprogrammed to cope with the increased power and torque.
The only way remapping can increase power and torque is to increase fueling/air volume. This might have a marginal increase in economy on a manual where the driver can make use of the torque by using a higher gear than an unmapped car but on an auto it that is not reprogrammed it must increase consumption especially when towing. It may even accelerate wear and shorten the life of the auto box as gear changes will be now be at incorrect points on the the torque curve.
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"Tinwheeler has asked some sound questions."
And I'm still living in hope of getting some answers.
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I had my previous D3 remapped by one of the big names in Land Rover remapping.
Yes there was marginally more power and torque, but really I did not need it, truth be told.
Land Rover then Deleted User the remap some time later at a service (new ecu map from land rover) and whilst the power dropped a little again, my mpg increased significantly.
Fundamentally, you can't have more power AND better fuel economy, despite the claims!
All a remap does is put more fuel into the engine for a given throttle position. Its a simple table full of numbers that takes seconds for them to update and charge £100's for. You cant change the laws of physics and increase the calorific value of the fuel. Putting more fuel in cannot increase mpg.
If you want / need the power then go for it, if your looking for anything else - be very wary.
Modern motor vehicles manufacturers live and die on mpg and CO2 figures - if a guy with a laptop can best the multimillion pound manufacturers efficiency by tweaking a few numbers in your ecu map, well, why aren't the manufacturers doing it?
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Q. Why haven't the manufacturer given this extra power as standard?
A. The engineers who developed the engines know this extra power and torque is available, however, due to some engines enormous operational range encountered around the world such as varying fuel octane, air temperatures and altitudes. A safe all round compromise is adopted by the manufacturers to suit all these conditions and also both fuel economy and exhaust emissions regulations.
Compromises are also left in the programs to cater for the owners who refuse to follow service schedules and insist on using the worst fuel possible. Our task as a Performance Chips, Remapping and TDi tuning company is to clear these compromises and produce a program more suited to the enthusiastic driver who looks after his vehicle and knows what he wants from an engine. We optimise the software that runs your engine in many different ways, yet we still leave the reserves necessary to assure absolute reliability.
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That's all good sales jargon Lornalou but can you answer TW's questions in an earlier post?
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That's kinda what I said, but written in a way to make you want to spend lots of money!
Manufacturers give you a 'tune' to optimise fuel efficiency for all general conditions, but by squirting more fuel in, you can obviously get more power, but at the expense of efficiency!
They don't 'optimise software'!....they update a table, that's all, that's what a map is and many just upload a set table...10 second £250...not bad work if you can get it!
(not all, you can get a bespoke map if they put it on a rolling road and live edit, but all the ones that do it at your house etc. just upload a new table).
But still, more power and torque yes, but at the expense of efficiency, emissions and probably longevity!
(also Octane has nothing to do with diesel cars...brilliant!
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I would be surprised if insurance companies did not need to know if your car had been chipped/mapped, I have come across ones that need to be told:-
a. if you have a towbar
b. If you change to winter tyres .
no extra premium involved but regarded as modifications in the small print!!
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Well, I’m left to assume that no one has told their insurer which could render them liable to having a claim refused or to be classed as driving without valid insurance.
As for the MOT and warranty issues, perhaps people are too embarrassed to admit to having had problems.
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Just out of interest I checked Direct Line about cover for remaps
"No, we will not provide cover for cars that have have been modified or altered in anyway (including wheels, suspension, bodywork and engine). The only exception to this is if your car has been fitted with a towbar“.
and LV
"Yes, with LV= car insurance we can insure some cars that have had changes or modifications to their standard specifications. The easiest way to find out if we can cover your vehicle is to get a quote.
Let us know what changes have been made to your car by answering 'Yes' to this question: "Has your car been changed in any way from the manufacturer's standard specification?". You'll be given a list of changes to choose from, including things like engine remapping, body work changes and additional security features"
COOP
No
So some companies do cover with an implied hike in premium and some don't ..... remappers beware.
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OK. my car is out of warranty so doesn't matter with dealers as I would have to pay for any repairs whatever they may be.
How would an insurance company know you have had it remapped or do the insurance companies do a test on every car that's involved in every accident. Even a dealer wouldn't know its been done unless they put it on there machine and run a test. a plug in diagnostic reader wouldn't show up a remap as they are used to find/remove fault codes.
I wanted my vehicle remapped so I had it done and paid for it. if it damages my motor I have only myself to blame. there are many cynics out there that will question everything people do. everybody has a choice in life and should be left to there own devises and not be criticised for there choice. the OP asked a question and I answered it and its up to him if he takes/does what I have done.
I paid the money and I take the chance.
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yes, mine was put on a rolling road and took 2hours as I watch while they did it. its not just a case of shoving more fuel in its mainly the air intake more than fuel. why do you see air rams on top of drag racers so air is forced into the engine. we could all sit round a table and argue with the experts and still not come to an agreement on remaps.
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Why so angry, LL? I was asking sensible questions. OK, you accept that any mechanical faults caused by the remapping are your own to sort out as warranty is not involved and, similarly, any MOT problems will be down to you.
I was interested to hear of any warranty/MOT issues - that is all and I wasn't criticising or pointing the finger at you. You have no problems to report which is good.
However, the insurance aspect is a different matter. I was interested to hear the companies' responses and Via has given us an indication. You, however, seem not to have told your insurer which is an extremely reckless thing to do. Believe me, if an insurance company was looking for a get out clause to avoid paying, they would discover the remapping with no trouble at all. For potentially driving without valid insurance, I would criticise anyone and that appears to include you.
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Thanks for that, One.
It’s good to know there were no MOT problems and it’s only to be expected that the insurance premium would go up. As long as it wasn’t a big hike in price, that’s not bad.
I've told insurers about fitting a towbar and having windows tinted in the past and it’s not been problematical.
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I’m with LV and they charged me (I think) £10.00 for the year or under 0.03p/day.
My car was motd in August and passed with no problem. Of course I’m not talking theoretical here I’m talking from experience.
I probably wouldn’t fit one on a car still under warranty
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For what its worth, most maps that are added to your vehicle are switchable, and / or removeable.
So if you were that way inclined, no one would know it has been or is remapped.
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