Putting a turbo in a BMW 340i

[Ovo]

Hi, inexperienced on the site and this is my first post.

My kids are getting older, my old Corsa is going to my eldest, and I was considering buying a project car with some oomph.

I’d like to buy a BMW 340i and put a turbo in it, preferably a high performance one 😉. Has anyone done anything similar? Are there any other modifications that I would need to do as a result of the increase in power? What performance increases could I expect?

Thanks for any help.

[NelsonM3]

Got to be a wind up surely?

[Magnum 475]

Are you sure you mean a 340i? The one with the Turbocharged 3.0 6 cylinder engine?

[Ovo]

No idea, didn’t know it was turbocharged, as I said I’m new to even thinking about this stuff. I’ve got a people carrier at the moment! Sorry for wasting your time.

[DXCV]

The B58 in the 340i is a fairly robust enough engine that has plenty of power stock. They’ll easily push 400bhp with a stage 1 remap, won’t need major hardware done unless you’re wanting to push for big power numbers.

In all honesty, if you wanted to go for a 340i, I’d probably look more at handling mods & some proper Michelin tyres on it!

[Benbay001]

Ovo said:

I’ve got a people carrier at the moment!

Ovo said:

My kids are getting older, my old Corsa is going to my eldest

Which is it?

I am fairly mechanically astute, compared to the average person. Yet the idea of turbo charging a car terrifies me. Its alot of work, especially in something modern.

Assuming this isnt a wind up, just forget the idea.

[Ovo]

Four kids, a people carrier for the family, but a ‘04, 1L, 3 cylinder Corsa for driving to work (a long way, as I work away, or did, before corona). Eldest is now 17, so he can have the Corsa. I want to upgrade now they’re getting older.

I wanted to get a big engined car and turbocharge it. BMW was the first thing I thought of. Any other cars more suitable you can think of?

[Automaton]

Obvious troll is too obvious.
Ovo is even some kind of shorthand for obvious.

[Ovo]

Automaton said:

Obvious troll is too obvious.
Ovo is even some kind of shorthand for obvious.

I’m not a troll. I’ve got no idea about this stuff. I realise that for some of you, you speak with people who know all about it in here, all the time, in a knowledge ‘bubble’. I thought it might be a good community to ask questions and to learn from. However, if this isn’t a place for ‘noobs’, please give me the name of a website that is.

[Ovo]

DXCV said:

The B58 in the 340i is a fairly robust enough engine that has plenty of power stock. They’ll easily push 400bhp with a stage 1 remap, won’t need major hardware done unless you’re wanting to push for big power numbers.

In all honesty, if you wanted to go for a 340i, I’d probably look more at handling mods & some proper Michelin tyres on it!

Thanks mate, probably good advice.

[MajorBeef]

Pure turbos do upgrades for the B58 engine. Although the turbo and high pressure fuel pump with only be the start.

ML performance is a UK shop that should sell all the hardware you need.

[Automaton]

Ovo said:

I’m not a troll. I’ve got no idea about this stuff. I realise that for some of you, you speak with people who know all about it in here, all the time, in a knowledge ‘bubble’. I thought it might be a good community to ask questions and to learn from. However, if this isn’t a place for ‘noobs’, please give me the name of a website that is.

So you're genuinely driving a corsa/people carrier and want more performance so have decided you want a 340i but without having driven one or looked into their standard performance havr already decided you want/need to turbo charge it?
The step up in performance is going to be significant.

[david-j8694]

Ovo said:

Hi, inexperienced on the site and this is my first post.

My kids are getting older, my old Corsa is going to my eldest, and I was considering buying a project car with some oomph.

I’d like to buy a BMW 340i and put a turbo in it, preferably a high performance one ??. Has anyone done anything similar? Are there any other modifications that I would need to do as a result of the increase in power? What performance increases could I expect?

Thanks for any help.

The 340i already has a 325hp 3.0 litre, 6 cylinder turbocharged engine. It's pretty fast. Take one for a test drive and see if it's quick enough for you. As has already been mentioned, the B58 is very amenable to tuning, so if you do want more grunt, then 400hp off a tune is easily achievable.

If you want a project car with a big engine to try turbocharging yourself, the 340i is not the right choice.

Edited by david-j8694 on Friday 13th November 10:05

[4rephill]

Ovo said:

.......I’d like to buy a BMW 340i and put a turbo in it, preferably a high performance one ??. Has anyone done anything similar? ...........

So basically the answer is:

Yes - BMW!

[mike9009]

If your past driving experience is a Corsa and a people carrier, I would try something a little less brutal then a 340i. Undoubtedly a great car, but a giant leap in performance.....

You might be pleasantly surprised by a 328i (other brands are available).

When lockdown finishes go and try a few different things, it really is the best way.

PS if you want a turbo, I would upgrade to fuel injection first

[hiccy18]

If you want a project BMW 135i or 335i with the N54 engine would be a good starting point, plenty of tuning advice out there all the way up past (allegedly) 800WHP. Alternatively a C4 Corvette for similar money/potential.

The modern Mx35i/40i cars are docile enough for the performance on tap, can't see a reason to avoid them provided you are sensibly prudent with the right pedal.

[alisdairm]

Ovo,

If your looking for a project car to turbo, I'd suggest getting a old Civic (6th Gen 1995 to 2000)

There are loads of guys putting turbos on them and getting some good hp numbers.

However you'd have to embrace the Vtec Boi culture.......Yo.