[ChicagoE92]

Hello all!

I would love some feedback regarding tuning a higher mileage N55.

I have owned the car for around 2 years and daily drive it.

Is there anything else I should do for the sake of longevity for the engine/surrounding components?

Is it smarter to get it tuned in a shop rather than by flashing?

Last major failure point I have not addressed is the HPFP but plan to over the summer.

Miles as of current day: 102,144

Current Parts List:

• MHD Super Liscense
• ARM Motorsports Downpipe
• HPS Cold Air Intake
• ARM 7” FMIC (maybe)

Will be changing spark plugs/coils prior to tuning.

Below is the maintenance history:

Spark Plugs/Coils: Will be installing the OE kit from FCP Euro prior to flashing.

Transmission Service (ZF6AT): Has never been done.

Alternator: Replaced within the last 1k miles.

Water Pump/TStat: Replaced within the last 1k miles.

Drive Accessory Belt/Pulleys/Idler Pulley: Replaced within the last 2k miles.

VCG: Replaced at 81k miles.

Radiator: Replaced at 81k miles.

Coolant Resovior: Replaced at 81k miles.

HPFP: Original has not been replaced.

Oil Changes: Every 5k miles with 5w40 from Liqui Moly.

[wrevilo]

Sounds like you are on top of everything really. I'd expect any issues to be exposed through the mapping. For example, only after I had flashed MHD did I start getting codes regarding the HPFP in my car.

The OTS maps via MHD are cheap and easy as a starting point.

[minulache]

Same as wrevilo said.
Spark plugs and ignition coils and you are good to go to Stage 2+
Maybe a good idea to change also the fluid in the front/rear differentials and transfer case along with the transmission service.