I know it was mainly Just an example, but I wouldn't be surprised if newer cars logged things in a more permanent way
Engine Remapping
- Thread starter fRostiE
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I know it was mainly Just an example, but I wouldn't be surprised if newer cars logged things in a more permanent way
Soldato
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Then why is resetting the ECU by disconnecting the battery a common fault finding suggestion?
The same way restarting a PC is a common fault finding suggestion but it won't wipe your hard drive.
As Nasher says, I'd be surprised if any logs are kept on volatile memory.
Soldato
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ECU's dont "log" much if at all, they do store fuel trims which change over time and allow the ECU to dial in the most economic cruise and idle settings, they are wiped by a reset though. Someone said they'd be able to tell an ECU had been mapped from the fuel trims, but a disconnect of the battery solves that.
Nasher didnt say logs he said "any data", meaning fuel trims.
Not heard of many problems from anyone using one on the VW/Audi engines, in fact the opposite, they seem very happy with the performance. DTUK is an established company and the DTE boxes they use sell world wide.
Not snake oil at all, I have one and it makes a huge difference to the dead spot in the throttle, it does make it more responsive and it is doing everything it promises. Wish I had got it years ago.
A lad local has a year old Golf R and has the DTUK box fitted and it has never mentioned problems with when he takes it in for a service at VW main stealer. He just takes it off and replaces it again after.
The graph on the DTUK website shows it does exactly what Armageus says, it simply applies more throttle at a given position. It can't make it respond quicker, it just creates that illusion by making 5% pedal travel equal 15% throttle application instead of 5%.
You can achieve the same thing much cheaper by just pushing the pedal further than you normally would
People will believe all sorts it seems. Only remaps I would use are true remaps, not the boxes that just change sensor values. Don't most just increase the fuel pressure but lowering the value the ecu sees thus the ecu over compensates.The graph on the DTUK website shows it does exactly what Armageus says, it simply applies more throttle at a given position. It can't make it respond quicker, it just creates that illusion by making 5% pedal travel equal 15% throttle application instead of 5%.
You can achieve the same thing much cheaper by just pushing the pedal further than you normally would
Soldato
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Hptuners is a "proper" ecu tuning kit, it will completely overwrite and remap an ECU the "proper" way. Having said that, with your laptop connected to the obd2 port via the cable you can adjust fuel and timing in real time without flashing over the ECU, if you disconnect the cable without flashing then those mods are gone and it doesnt set the flash counter on the ecu.
Effectively it does run as a piggy back box until you write the full flash on to the ECU. If a "proper" package like that can do fuel and timing in real time, so can a box that connects to the obd2.
Man of Honour
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They'll interrupt and modify MAF sensor values to remove/add fuel and MAP sensor values to increase boost on a turbo charged car
The graph on the DTUK website shows it does exactly what Armageus says, it simply applies more throttle at a given position. It can't make it respond quicker, it just creates that illusion by making 5% pedal travel equal 15% throttle application instead of 5%.
You can achieve the same thing much cheaper by just pushing the pedal further than you normally would
Have the ney-sayers ever tried either one or is this just speculation on both parts? I have had remaps, used DTUK tuning box and they BOTH give you power and better torque and MPG. They are not the piggyback chips from decades ago. The pedal box I have now is not the same as pushing the pedal down further at all you you know exactly where the power is starting instead after an inch of dead travel built into all fly by wires throttles.
OP look on car specific forums for your car where you will get reviews from owners not what people have heard in the internetz.
Even DTUK show that it is exactly that though. What else do you think the pedal box can be doing other than that?
no one is doubting whether they work, how they go about it and the relative safety is what was up for discussion.
Strange but none of my cars have ever had an inch of dead travel - and I quite value being able to use 5 or 10% throttle that a pedal box would remove.
Its very obvious from the graph isn't it. Ie Sport Plus just turns 10% throttle into 40%.
Even tells you how the tuning boxes work as well.
"A DTUK tuning system intercepts these signals between the ECU and engine and then modifies them against a set of parameters that we refine individually for each application. These modified signals will, depending on application, interact with fuel, boost, timing and more to increase torque and horsepower. The increased power levels available throughout the engines powerband mean that the engine doesn’t have to work as hard which leads to improved economy."
So just a more expensive version that uses the OBD port rather than plugging inline with the sensors.
A proper remap actually alters the cars built in maps so what it sees is what is actually happening.
It is doing exactly that and you get instant response as soon as you touch the pedal I did not say it did anything extra. You need to try one to understand the benefits, look on all the forums about them they have nothing but excellent reviews.
Upping the pedel sensitivity that much would make the car annoying to drive. It would remove the progressiveness from it and make it an on/off pedal.
But personally I wouldn't trust some plug in device tampering with the timing of my engine. It has disaster written all over it.
But personally I wouldn't trust some plug in device tampering with the timing of my engine. It has disaster written all over it.
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