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Safety should be the first parameter when ever tuning any platform. One should always factor in, the type of the gas, the maintenance especially the oil changes, the oil type, the EGT (exhaust gas temp), the boost gauge (to monitor any boost creeps), frequent oil analysis for any unwanted metal specs and the weather (should be tuned to your particular climate) to name some
Few questions to ask the so called tuners:
What R&D have they done on our X5M platform?
What's the limit of the power that our engine can tolerate safely?
Do we need an upgraded IC?
Do we need to upgrade our Injectors for more fuel?
Where is the AFR and just cause you have a good AFR say in California, would all your tunes have the same AFR anywhere else int he country?
Do we not need an EGT and a boost gauge?
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