335i tuning advice

Discussion in 'Engine maintenance, upgrades and modifications' started by rob1974, Oct 29, 2017.

  1. 29 Oct 2017 at 9:07 AM #1
    rob1974

    rob1974 Rocking a new hat

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    I am looking at maybe getting an E90 07 plate 335i petrol as i need something more practical.

    If i wanted to increase power without greatly affecting reliability, what products should i look at and who would provide them.

    I don't mind getting a remap, but don't want to get a bad one and destroy the engine, or hike up the power to a point the automatic box or other parts suffer too much stress.

    All advice would be welcome
     
  2. 29 Oct 2017 at 12:44 PM #2
    Deep pan

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    My mate has just got a 335i. Remapped at Avon tuning. No other mods.
    Their map should take it from 305hp to 365hp and torque 295ft/lbs to 368.. for some reason on his car torque was higher.. 334stock and the map took it to 397.
    Nothing bad has happened yet.. although it's only been 2 weeks since the tune.
     
  3. 29 Oct 2017 at 12:59 PM #3
    Dan88

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    The mhd software is very popular and a cheap alternative to a custom map. It basically allows you to remap the car with different generic maps from about £100, all you need is a android device and a obd2 cable.
    You will be needing a clutch if you go down the tuning route. A luk 550i clutch will set you back a couple hundred quid plus fitting.
    Catless downpipes and a uprated Intercooler would come next, this would see you with a fairly fast motor.
     
  4. 29 Oct 2017 at 3:17 PM #4
    rob1974

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    Cheers guys. I will look into both products and see which suits most. :thumbsup:
     
  5. 29 Oct 2017 at 4:45 PM #5
    AdamM15

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    mhd stage 1 +

    will see you around 400 ish with an uprated intercooler happy days
     
  6. 29 Oct 2017 at 5:22 PM #6
    dino

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    It’s a slippery slope mate.

    You can’t just remap these cars and do nothing else. I was running a JB4 for a while and constantly had engine lights and limp mode along with boost pipes popping off. Also the stock intercooler is more like an interwarmer. As soon as you start pumping more boost through the system the intercooler can’t cope. I ditched my JB4 and went for an Evolve map along with a Wagner intercooler, Evolve downpipes and a metal charge pipe and the cars an animal. The low down and midrange torque is ridiculous (almost too much so - I prefer a linear power delivery)

    As a minimum I’d recommend you change the intercooler and fit a metal charge pipe (the rubber OE one expands) as well as a remap. Add a primary car delete (catless downpipes) and you will be hitting the magic 400bhp and approx 450 lbft
     
    Last edited: Oct 30, 2017
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  7. 30 Oct 2017 at 10:27 AM #7
    Iatm

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    BMW do a power pack option for the 335i. I am not 100% sure if it will work on the N54 engine, I know 100% do it for N55. Maybe something to look in to
     
  8. 27 Jan 2019 at 4:38 PM #8
    BennyC

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    Useful info, thanks. Any idea of approximate cost for either option?
     
  9. 28 Jan 2019 at 10:17 AM #9
    Iatm

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    BMW quotes were around 500-600
     
  10. 10 Feb 2019 at 3:00 PM #10
    zulfario94

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    A friend of mine produces intercoolers for these he's on eBay know as MTC, a lad I work with is running this intercooler and de-cat with a Mud stage 2 tune it is roughly around 400-410 bhp
     
  11. 10 Feb 2019 at 3:33 PM #11
    mikeyscott

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    I’d start with handing first re tyres and birds package. Being an older 335i it will prob have a bolted diff, making the Quaife a bargain.

    306bhp is plenty to start with.
     

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