Quote:
Originally Posted by Will_460cs
Hoping for any insight to my dilemma.
I have a 325I using the N53 Engine car (note not the N52!) with a MSD80/81 ECU. This a is a 3LT car, as the hardware is the same as the 330I bar the inlet manifold I have bought and fitted the 330I 3 stage Inlet. So far so good.
So I have been considering the best way to get the 330I tune on to the car:
-Option 1: Tuner to merge 330i Map onto my ECU and modify the power class to match my car, so that it gives at least 330I performance.
- I have found a tuner to do the this the cost is about £300
Major con: Removal of the tune is going to require a trip to tuner and thats a long distance away..
I would really like to be able to remove the Tune at future points in time, particularly when I eventually sell the car.
-Option 2: I have found a secondhand N53 330I ECU with matching CAS module and Key, the gearbox is also the same - Manual.
So my thought on this are:
- I understand as I have found a matched set of DME/CAS/KEY/Gearbox type it should be a straight swap and the car should run I think in theory as plug and play, but:
- The replacement 330i ECU has mileage of 140K whereas my car has under 100K, as I'm not swaping the Instrument cluster I believe the tamper dot will light up like christmas.
I'm not bothered about the DOT except if sell the car and revert it back to 325I spec and fit the original ECU - At this point I'm not sure if the DOT will clear/remain as the car will obviously have done a few thousand more miles and there will be a mismatch... I understand its possible to "virginize" the Instrument cluster but that sounds like quite an effort...
- I can recode the correct Vin to the new ECU in WinKFP myself so I think as far as coding goes that all thats required?
One option is to get the services of "mileage corector" or buy a program to change mileage data in the replacement 330I DME and CAS? Again not sure how straightforward this is or what is the best DIY method (I like DIY)..
I'd really like to go the ECU swap route if possible as costs are less than tune marginally but crucially are easily reversible/plug and play.
If any gurus could chime in Id appreciate it, I realise what Im doing isn't potentially that difficult but I'm truing to plan it rather than go down a black hole! ....research, research!
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Your best bet is finding a used OFT tablet if you want to be able to flash back and forth.
Buying a DME/CAS/KEY is ALOT of unnecessary work just to get a tune.
If narrow down your options to the following-
Buy flashing tool- obtain 330I N53 file somewhere on the internet.
hassmaschine do you have one lying around somewhere?
The CAS & DME are 2 of the few modules that WILL NOT accept a vin write with winkfp unless they are virgin.
Ship your ecu off to a tuner.