340i More power!!

[Tambo340]

Morning all chaps,

So some will know I have a 67 plate 340i with the Power and sound kit on.

However the car steel feels like it can give so much more and not as quick as I thought it would be with 360bhp.

Now I’m thinking of having another power module fitting but not sure due to warranty concerns etc so.

Has anyone used JFAutomotive ?

https://www.jfautomotive.co.uk/services/vehicle/?B...


Thoughts as it’s only a thought at this stage.

[A4 cabrio]

Is it the MPPSk kit you’ve already got installed?

[Tambo340]

A4 cabrio said:

Is it the MPPSk kit you’ve already got installed?

Yes so it’s already 360 if BMW were able to do provide another remap for more power in the near further I’d hold out for it just to maintain warranty.

[A4 cabrio]

Ive seen people saying the most proven way for power on top of the MPPSK is to go down the JB4 route, apparently that should get you 400-410bhp, not too sure where you’d be warranty wise though.

[anonymous-user]

Personally I'd hold out for the ECU unlocking, of the performance boxes I've used and read reviews of they're never as smooth as a proper remap. There was a few guys who had JB4 boxes on x35i models and moved to a traditional remap now the ECUs are unlocked, a lot have commented how much smoother the map is. The JB4 gets the numbers up and provides the extra power but it just adds a dollop of boost on top of whats already there.

Did you have the MPPSK fitted from new? I have a 340i coming and cant decide if I should run it standard for a bit or just get the kit fitted before I pick it up.

[Tambo340]

CaptainMorgan said:

Did you have the MPPSK fitted from new? I have a 340i coming and cant decide if I should run it standard for a bit or just get the kit fitted before I pick it up.

Yeah I rolled it all into the package at the time. So I picked the car up with the M performance kit on and power kit etc

Carbon tail tips and carbon spoiler
The rest of the body kit I left black

The sound is fab.

[Tambo340]

[anonymous-user]

Wow, that looks stunning! As if I wasn't excited enough I love the full M Performance kit but I'll need to wait it out a bit before getting anything else. I'm leaning towards getting the MPPSK from the off though, if nothing else for the noise!

[sadsac]

JB+ could be a cheap and simple option

[aeropilot]

Tambo340 said:

Morning all chaps,

So some will know I have a 67 plate 340i with the Power and sound kit on.

However the car steel feels like it can give so much more and not as quick as I thought it would be with 360bhp.

Now I’m thinking of having another power module fitting but not sure due to warranty concerns etc so.

Has anyone used JFAutomotive ?

https://www.jfautomotive.co.uk/services/vehicle/?B...


Thoughts as it’s only a thought at this stage.

Never heard of them, but I've been out of the BMW tuning loop for nearly a year now since selling my 135i.

Personally, while still under warranty, I wouldn't touch a remap or piggy-back tuner.

What about an intercooler change?

I had a drop-in Forge Motorsport I/C fitted to my 135i while still under warranty, and with the BMW Performance exhaust fitted, when I did a before and after run on SRR's dyno, the Forge added 19hp, and gave a much better throttle response as well.

[Monty Python]

If you want any more power then you may run into problems with the remap you've already got.

A remap from another company will have been developed on the standard car, so the remap you have already will be overwritten.

Likewise, a tuning "box" will also have been developed on the standard car, and may not work alongside a remap.

I would also say that if you increase power further you're going to need a LSD.

[Tambo340]

Ah that’s a really good point that I hadn’t thought of, I wouldn’t want to loose what iv got but didn’t think about the practicality of how to “stack more power on”

LSD would be a nice to have anyway.

[Monty Python]

Tambo340 said:

Ah that’s a really good point that I hadn’t thought of, I wouldn’t want to loose what iv got but didn’t think about the practicality of how to “stack more power on”

LSD would be a nice to have anyway.

The other thing to bear in mind is how the extra power is delivered - if it's all above 5000rpm then it's not going to be that usable.

[anonymous-user]

Monty Python said:

If you want any more power then you may run into problems with the remap you've already got.

A remap from another company will have been developed on the standard car, so the remap you have already will be overwritten.

Likewise, a tuning "box" will also have been developed on the standard car, and may not work alongside a remap.

I would also say that if you increase power further you're going to need a LSD.

The MPPSK isn't a 'remap' as such but a whole new ECU from BMW, there are lots of people using JB4 boxes with a MPPSK over on N54tech.com.

[Tambo340]

I love my 340. But If I could get more power or have it at least feel lighter on its toes.

6 months in do I hold tight and wait for more performance mods or just say sod it and buy M3/M4 as I’m thinking that’s what I should have done.

I will get spanked by the dealer cost wise and beat up by the wife haha

[smashy]

Tambo340 said:

I love my 340. But If I could get more power or have it at least feel lighter on its toes.

6 months in do I hold tight and wait for more performance mods or just say sod it and buy M3/M4 as I’m thinking that’s what I should have done.

I will get spanked by the dealer cost wise and beat up by the wife haha

Ill give you £21262 spondooliks for it...........well I wont evans halshaw will .shock shock shock emojis...amazing how much you lose driving a new car out the showroom

Edited by smashy on Monday 12th March 20:01

[Olivera]

LSD is a must, currently when cornering hard you've got a 360bhp one wheel drive BMW.

[Tambo340]

Ok so let’s look at a sensible option then. We don’t want to to trade up as if loose too much.

Due to it being so new I feel like a pioneer/ test mule/ maverick haha.

Ok so out of BMW’s options list (to keep in warranty)

We want:
LSD
Height adjustable springs?
Ask for a further tune?

I will pick up a new parts brochure tomorrow to see what else can be done.

[Monty Python]

Tambo340 said:

Ok so let’s look at a sensible option then. We don’t want to to trade up as if loose too much.

Due to it being so new I feel like a pioneer/ test mule/ maverick haha.

Ok so out of BMW’s options list (to keep in warranty)

We want:
LSD
Height adjustable springs?
Ask for a further tune?

I will pick up a new parts brochure tomorrow to see what else can be done.

I don't think the height adjustable suspension is available on the 340i - only the M2/M3/M4 (at least the M Performance). Otherwise it lowers the vehicle between 0 and 20mm depending on the model.

There is an adjustable kit from ACS, but at ~£2500 it ain't cheap.

Edited by Monty Python on Tuesday 13th March 10:15

[Tambo340]

Balls! Well I’d rather pay for LSD at that price. I will find out later on my way home.

I will nip into parts and see what they say.