for modern diesels.

Is there a difference?

fuel mod chip, and ECU mod chip?

If so pros and cons?

 

Funny, just looking at these on Ebay at the moment, thinking about getting one for my work van 1.7CDTI Astra Van, they are around the Ł100 mark, as Fil said anyone used one?

 

was ebay that i see the different types, just wondering if there is a difference or not?

 

I am trying to get my mate to buy one for his work van, atleast if the foooker blows the engine up his company will pay to repair the van

 

Tuning boxes are a very tacky.

Benni.

 

Have you had one fitted on one or your cars then Benni?

 

What do you base this statement on?

 

Tuning boxes are unreliable in my opinion and very crude in how they work.

'Chips' are problematic too. Can't beat a proper remap by Evolution Chips.

 

Isnt that a bit contradictory? As Stu does "chips" as well.

 

As far as I know, Stu does 'Chips' for Cossie's, but for modern diesel's, as per the subject of this thread, I'm fairly sure Stu would only do a remap based on whats in the car already, not a generic chip.

 

if you get the proper boxes, then i understand a reasonable increase in torque & bhp can be gained across the rev range for derv turbo's... plus teh boxes are good for company cars as they can come off as easily as they went on ;P

 

We used to be agents for 'Tunit', who are one of the bigger performance box companies. What a load of shite that was, we don't do them any more.

 

so what was shite about them?

more details please

 

A chip and a remap are the same thing.

 

We had about 50% success rate in terms of cars that ran trouble free after installation.

Also, they have an adjustment pot on the side and when we asked on what basis the adjustment was carried out, they told us that you just adjust it until the car smokes too much, then back it off a little. Very technical.

Not our style.

 

My comparison is between a generic chip written for one particular car, but copied and sold on and a map that was written for that specific car and flashed onto the ECU.

 

thats not really that good... iirc, didnt use a "tunit" box, it was a german make that was reccomended. it was on a megan 1.9dci and did alot for drivability and mid-range torque.

 

I had one that plugs into the fuel rail, did give more power and touque etc but they work by upping the fuel pressure and can blow the seals in your diesel pump, as i found out Ł800 down the line may be o.k on a low milage car but to be honest id steer clear.

 

Apples and oranges.

A calibration can be delivered as a physical chip or flashed into an ECU via some method (eg OBD diag port). The calibration used, in either scenario, can be either an off-the-shelf cal or a custom mapped item. The latter can be done either offline or online ('live mapping').

I think it's good that people understand these terms properly.

 

I dont know if Stu / Kenny do this, but alot of the flash maps are pretty much generic anyway.

So fitting a chip is no real different to having a map.

Also, many modern ECU's are flash based, so replacing the chip is pointless.

 

Most modern ECU's don't have a chip to replace.. the calibration is usually stored inside the flash area of the main processor

 

which i forgot