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425d

Scottb222
in BMW 4 Series Forum

Featured Replies

Anyone tuned an f32 425d?

Mine is automatic (2014) and I’m wondering how she’ll handle an ECU or tcu tune. Current mileage about 93000 miles.

  • Quote

    Morning Scott

    Welcome to the Forum

    The start point is to ensure your engine is in top condition and your car is producing close to it's original power output which I believe is around 215hp, that means a thorough service and rolling road session. Then talk to the ECU tuners don't just go for the biggest claimed increase, how many have they done ? How successful is it and how satisfied are there customers ? do they have a demonstrator? 

    With a good base to start I would expect a good remap should see 25% to 30% gains it is the gain in torque that is the most important, that's what gets you down the road 😁

    However remember brakes, suspension and tyres after all if you get there quicker it's nice to know you can stop and steer as quickly

    Good Luck

    Dave

  • Quote
    • Author
    6 minutes ago, Greydog said:

    Morning Scott

    Welcome to the Forum

    The start point is to ensure your engine is in top condition and your car is producing close to it's original power output which I believe is around 215hp, that means a thorough service and rolling road session. Then talk to the ECU tuners don't just go for the biggest claimed increase, how many have they done ? How successful is it and how satisfied are there customers ? do they have a demonstrator? 

    With a good base to start I would expect a good remap should see 25% to 30% gains it is the gain in torque that is the most important, that's what gets you down the road 😁

    However remember brakes, suspension and tyres after all if you get there quicker it's nice to know you can stop and steer as quickly

    Good Luck

    Dave

    Morning Dave thank you

    Got new brakes when I bought her in April, tyres are Goodyear and Bridgestone with plenty thread and the suspension feels good to me besides that I’m not certain of its condition 😄

    There’s a reputable tuner nearby so I’ll look into getting it on the dyno to check the current output and see where I’ll go from there

    Much appreciated

    Scott

  • Quote

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