[jenky2010]

hello all,
i remapped my e90 and it really flys, does anyone know how i could further increase bhp????
Thanks
paul

[parapaul]

320d I presume?

It's a case of diminishing returns really - you can do all sorts of things, exhaust, induction, FMIC (probably?), water/meth, nitrous...

But you'll end up spending vast amounts of money for not a lot more bhp. Be happy with what you've got IMO.

[Skid]

What sort of power output does it have now?

Is it petrol or diesel?

On petrol cars an exhaust and air filter will give maybe 10-15bhp more. After that it's a lot of money spent on gas flowed heads and cams.

On diesel cars a remap is the cheapest way of getting good power gains, typically 30% increase in power and torque. After this it will get costly with hybrid turbos. Air filters and exhausts don't make a great deal of difference.

You would be better off saving your money and getting a E90 with a bigger engine imo. Either a 325, 330 or 335.

[P4BCC]

In my experience if you were thinking of getting a new exhaust or induction kit you should do that before a remap as a good remap will dial both in the car so it uses them properly which will increase bhp and torque.

[raf555]

although it wont increase the bhp a sprint booster gives u the edge off the mark!

but they aint cheap.

[Dr Dave]

Sounds like a classic case of "Buy a car with a bigger engine" to me.

Modding the '20d will just decrease reliability and lower resale values.