It a Chip Thing

[Juststuff]

I have a 200ES V8 just wondering if there is a aftermarket chip and what sort of performance increase.

[donut]

I have seen a few things on tdi but nothing on V8

[6Limetree]

Insert a 4.6kohms resitor into your engine temperature sensor feedback line.
This will fool your engine management system into thinking the engine is running cold. It will respond by increasing the fuel supply, plus increase the air mixture and hey presto, you have just produced for a few pence what most so called power chips do for mega bucks. Adds about 25 -35 bhp.
Most chips work this way. Its all about getting more bang at the piston which can only be done by more fuel.

[clarkie]

when you've done that buy a bigger fuel tank,because the temptation will be to use those extra horses more often:D

[Cocky Lil Guy]

Insert a 4.6kohms resitor into your engine temperature sensor feedback line.
This will fool your engine management system into thinking the engine is running cold. It will respond by increasing the fuel supply, plus increase the air mixture and hey presto, you have just produced for a few pence what most so called power chips do for mega bucks. Adds about 25 -35 bhp.
Most chips work this way. Its all about getting more bang at the piston which can only be done by more fuel.

What you say is not always true, the 'chips' that you can buy don't just 'fool' the ECU into thinking the air is colder, but they actually re-map the ECU and the amount of fuel and air that is being used...thus the mega bucks!!!

[6Limetree]

I dont think we are talking The fast and the furious here just a power increase. What i think you are trying to say is that if you want to race your landrover you can force new management values into the ECU [Engine Controll Unit] if it is RAM type or if it is ROM you can replace your ROM [Chip] with a sausage oops! sorry a new chip.What you say is not always true, the 'chips' that you can buy don't just 'fool' the ECU into thinking the air is colder, but they actually re-map the ECU and the amount of fuel and air that is being used...thus the mega bucks!!!

[Cocky Lil Guy]

What i'm saying is that if you go to somewhere like...Jeremy J Fearn or Tunit, then they will actually place the chip on the port for T4 (the diagnostics system LR use) and it will override the ECU mapping and it will adapt the ECU for the mapping on the Chip, thats why they plug in, so when you take it out the ECU returns to the mapping it orignally had.

If you do what is orignally is by 'fooling' the ECU into thinking the air is colder, then if you have anything like Climatic Control or Air Conditioning, then the ECU will cause it to be boiling hot even though outside it is 20 odd degree's. You have to think of everything that might be affected!!

[6Limetree]

All sounds nice but i am afraid youve been wrongly told . If it was just a matter of connecting a chip to a single k" line like the diagnosis terminal t4 on LR we would all be doing it and as for the climatic control it has its own ambient temp sensor positioned in front of rad as under hood temp or even air box temp would not be correct also climate control is a stand alone system and has its own self diagnostics so would not be "Engine"Control"Unit" sensors.:rolleyes: What i'm saying is that if you go to somewhere like...Jeremy J Fearn or Tunit, then they will actually place the chip on the port for T4 (the diagnostics system LR use) and it will override the ECU mapping and it will adapt the ECU for the mapping on the Chip, thats why they plug in, so when you take it out the ECU returns to the mapping it orignally had.

If you do what is orignally is by 'fooling' the ECU into thinking the air is colder, then if you have anything like Climatic Control or Air Conditioning, then the ECU will cause it to be boiling hot even though outside it is 20 odd degree's. You have to think of everything that might be affected!!

[Juststuff]

Now I am confused, sorry should I put the resistor on the temp sensor line or get a new chip.
I like the Idea of the resistor.
I am sure I will be able to watch the fuel guage drop when I floor it.
But that is the price to pay for driving a perfect 4WD.

[imspanners]

Now I am confused, sorry should I put the resistor on the temp sensor line or get a new chip.
I like the Idea of the resistor.
I am sure I will be able to watch the fuel guage drop when I floor it.
But that is the price to pay for driving a perfect 4WD.

The resistor wil NOT work.
On early cars with basic ECU's then yes, they could be easily fooled, but new cars are a lot more complicated.
In very simple terms: If you replaced the air temperature sensor with a resistor the ECU will think the air is cooler. The air-flow meter will tell it how much air is coming in and how dense it is, so it will adjust how much fuel to add.
Initially it will think all is well, until the burnt residue enters the exhaust. It then hits the oxygen (or lambda sensor). This will tell the ECU there is actually too much fuel being put into the cylinders, so the ECU will look again at the air-flow and temperature and realise one of those figures must be wrong. It will initially ignore one or the other until it works out which one is telling lies and ignore it. Possibly putting the MIL lamp on, and just using the air-flow meter and oxygen sensors to run the vehicle.
Resistor is now isolated and useless!

(before another tech gets on the bandwagon, bear in mind this is not a full technical explanation of the runnings of the ECU strategy, as there is'nt enough hours in the day, but this shows the basics as a far as temperature is concerned)

[6Limetree]

Then just add a resistor to the lamda sensor. The resistors like the chip is just a means of inputing false information.

[imspanners]

Then just add a resistor to the lamda sensor. The resistors like the chip is just a means of inputing false information.

hmmm, you know nothing about engine management systems do you?

The lambda sensor is not a resistor, so putting a resistor in there will just f*ck everything up!!

[6Limetree]

I find your haste and excitement to jump in with guns blazing rather amusing!

Lets go through this slowly so you can maybe catch up . Firstly checking back over previous posts, i dont believe thier was anything said suggesting that a lambder sensor was a resistor!
Now also i can obviously see from your knowledge on ECUs that you are just an avid reader of haynes service manuals because the most modern ECUs cannot! just drop off a sensor without putting on the MIL thats (Malfunction Indication Lamp) and if this MIL comes on the ECU runs on pre recorded values stored within its self .
Now take your time reading this bit, haynes may not of covered it . If the resistor is fitted correctly. The ECU will recieve a rich signal from the Lambda sensor, but all it will do is keep tweeking mixture and timing to cope with what it has. You see this resistor will not throw the values out enough for the ECU to recognise any problems .
Now! should you find an ECU that can drop off sensors willy nilly you COULD! fit a resistor to the Lambder sensor witch in turn will not allow the sensor to heat up to operating temperuture thus constantly holding the system in open loop with no sensor drop off and no MIL on because ECU thinks its in warm up phase and will not argue with it reguardless to coolant temp etc.
I do hope you kept up .
hmmm, you know nothing about engine management systems do you?

The lambda sensor is not a resistor, so putting a resistor in there will just f*ck everything up!!

[Cocky Lil Guy]

Of course you could do all the above, then have the Engine Magement Light come on, and have the ECU go into what is effectivaly "Transport Mode" which actually only give you enough power to get to the nearest LR dealership to be checked over, to of only found that you have void your warrenty!! I suggest you find an after market chip specialist and get one from there, it may cost a bit but at least you won't F*** your engine and worst of all (for a LR anyways) void your warrenty!!

[Juststuff]

okay now we have covered that the resistor is out, who is a good chip supplier for the v8 2000 model LR

[imspanners]

I find your haste and excitement to jump in with guns blazing rather amusing!

Lets go through this slowly so you can maybe catch up . Firstly checking back over previous posts, i dont believe thier was anything said suggesting that a lambder sensor was a resistor!
Now also i can obviously see from your knowledge on ECUs that you are just an avid reader of haynes service manuals because the most modern ECUs cannot! just drop off a sensor without putting on the MIL thats (Malfunction Indication Lamp) and if this MIL comes on the ECU runs on pre recorded values stored within its self .
Now take your time reading this bit, haynes may not of covered it . If the resistor is fitted correctly. The ECU will recieve a rich signal from the Lambda sensor, but all it will do is keep tweeking mixture and timing to cope with what it has. You see this resistor will not throw the values out enough for the ECU to recognise any problems .
Now! should you find an ECU that can drop off sensors willy nilly you COULD! fit a resistor to the Lambder sensor witch in turn will not allow the sensor to heat up to operating temperuture thus constantly holding the system in open loop with no sensor drop off and no MIL on because ECU thinks its in warm up phase and will not argue with it reguardless to coolant temp etc.
I do hope you kept up .


Unfortunately, it will trigger the MIL because as soon as it reaches operating temperature it knows it should be in closed loop, they're cleverer than you are (obviously)!

As I said, there is a damn site more too it, and you clearly pretend to "know it all" but DON'T!!

I don't use the Haynes book of lies, only service manuals.
However, my information is from experience not books!