My E90 325i has 230,000 km on the clock. Is it safe to do a stage 1 remap at this mileage? Engine runs fine, no issues, oil consumption is normal. But im worried the extra power might kill it.
Anyone running a tune on a high mileage N52?
I tuned my E90 325i at 200k km. No issues after 30k km of tuned driving. The N52 is a strong engine. Just make sure the basics are in good shape - no oil leaks, good compression, fresh plugs.
The N52 doesnt make huge power from a tune anyway (maybe 15-20hp gain). So the stress increase is minimal. I wouldnt worry about it at all.
Want to join the conversation? Sign in or create an account — it takes about ten seconds.
BMW performance tuning for beginners - complete guide to getting more power safely
Stage 1 tune for 116i F20 - is it even worth it?
Stage 1 remap on 118d F20 - daily commuter gains
BMW 320d chiptuning results - before and after comparison
ECU remapping explained - what happens inside your BMW engine computer
MHD vs BM3 vs JB4 — ultimate BMW tuning platform comparison 2026
