[Amazon]

Hey guys,

I'm looking for some feedback from owners who bought a std 335i/435i and added the kit afterwards.

Does the car just go faster, without any change in feel, or does the engine feel stronger and more powerful?

I actually don't care if the car sprint from 0 to 60 a bit quicker than the standard configuration. What I'd like is a bit more aggressiveness from the engine in its power delivery, specially in its lower band.

Thanks for your input.

[AudiA4]

Originally Posted by Amazon

Hey guys,

I'm looking for some feedback from owners who bought a std 335i/435i and added the kit afterwards.

Does the car just go faster, without any change in feel, or does the engine feel stronger and more powerful?

I actually don't care if the car sprint from 0 to 60 a bit quicker than the standard configuration. What I'd like is a bit more aggressiveness from the engine in its power delivery, specially in its lower band.

Thanks for your input.

Fair question. Having come from a 10 year ownership of a 2006 330i, I've actually been a bit underwhelmed by the power output of the 335i (picked up 3 months ago). The E90 335i had a MUCH more aggressive power delivery than the F30 335i.

I'd consider the MPPK if it added a bit of urgency to the power delivery as you describe.

[Amazon]

Anyone?

[lens]

Originally Posted by Amazon

Anyone?

I bought my car with the MPPK preinstalled so I don't really know the difference, but my friend told me if you can get the kit for less than 1000$ then get it, if any more, then it's not worth.

[ronanz]

Originally Posted by Amazon

Anyone?

It's a decent upgrade. You will feel a little difference in power and shift characteristics (specially in Sport or Sport+). Although for the cost, it's rather mild in my opinion.

If there were more tuning options available at the time I purchased my 435 (namely ENZO Tuning), I would've rather gone that route.

.

[135Pats]

For cars under warranty (like mine) it's viable and adds a decent amount of midrange. Up top the motor still falls off a cliff but that's not a software matter.

If you don't care about the warranty it's a pretty damn poor value prop. Would absolutely go with an aftermarket flash if that's not a concern.

FWIW at least with the 54s, BMW did more tweaking in the BIN file than most of us had expected. Honestly, I would have guessed they just bumped in a bit more load in the midrange and added some duty cycle. I was impressed on that front...But it's a v conservative OE tune.

[juan2mini]

I thought it made an improvement. I would do it again. I drove my 435i w/6 speed for three months prior to adding the MPK. The car is more responsive, sounds better & won't have any warranty issues. It was worth it for my, nice improvement = almost 12% increase in HP.

[fecurtis]

Sorry I can't really help you, I had it installed prior to taking delivery so I have no point of comparison.

[versailles]

Originally Posted by 135Pats

For cars under warranty (like mine) it's viable and adds a decent amount of midrange. Up top the motor still falls off a cliff but that's not a software matter.

If you don't care about the warranty it's a pretty damn poor value prop. Would absolutely go with an aftermarket flash if that's not a concern.

FWIW at least with the 54s, BMW did more tweaking in the BIN file than most of us had expected. Honestly, I would have guessed they just bumped in a bit more load in the midrange and added some duty cycle. I was impressed on that front...But it's a v conservative OE tune.

Pretty much this, my car was purchased new with it installed however I have driven a couple of test drives on standard 435i engines and it's a decent improvement,

That said its expensive for what it is and if I wasn't concerned with warranty I would have definitely gone aftermarket for a lot less £

[techwhiz]

Originally Posted by Amazon

Hey guys,

I'm looking for some feedback from owners who bought a std 335i/435i and added the kit afterwards.

Does the car just go faster, without any change in feel, or does the engine feel stronger and more powerful?

I actually don't care if the car sprint from 0 to 60 a bit quicker than the standard configuration. What I'd like is a bit more aggressiveness from the engine in its power delivery, specially in its lower band.

Thanks for your input.

It does give more HP and torque.
Car pulls just a bit harder.
Best option while under warranty.

[ah3]

good time to get it since there's a $225 BMW M performance rebate on top of whatever deal you can find.

[bmwuser]

I have it on my 335i. Noticied the difference the first time I mashed the gas pedal. I wanted the increase and not void the warranty. Probably could get more power for the same money going after market, but then you could have warranty issues. For me I like the piece of mind with the warranty.

[fscuderia23]

I had mine installed about a year and a half in and its definitely worth the upgrade. while it won't blow your mind like jb4 or such, its your safest bet in terms of reliability, and best of all no issues with warranty. mppk paired with mpe really changes the car, and its plenty fast for public roads. it seems to pull harder and acceleration is effortless. the added backfires from the exhaust is awesome as well. well worth the money.

[greekcs]

You will notice a difference but over time you'll adapt and be left wanting more. The car feels stronger off the line and mid revs but does, as someone else stated above, still fall flat on its face up top.

[yoandry]

Mine is @ the dealer right now for MPPK and MPE installation. I drove the car about 2 weeks stock. So I will find out the improvement in a couple of days.

[135Pats]

Originally Posted by greekcs

You will notice a difference but over time you'll adapt and be left wanting more. The car feels stronger off the line and mid revs but does, as someone else stated above, still fall flat on its face up top.

Yep. Though should be noted that you aren't going to see substantial gains or a change in power curve up top with the stock TS turbo, regardless of tuning choice. The exhaust wheel is TINY.

[RoundelM3]

Originally Posted by 135Pats

Yep. Though should be noted that you aren't going to see substantial gains or a change in power curve up top with the stock TS turbo, regardless of tuning choice. The exhaust wheel is TINY.

Are you referring to the twin scrolls on the exhaust side or the compressor wheel on the intake side? The N55 was developed with efficiency as first priority and power 2nd - and it's pretty good at both. The F80/82/83 engine is similar to the N54 with two turbos, but is tuned for high-end power like all M engines have been in the past. Makes more sense to buy one of those rather than re-engineer the N55 with bolt-ons and tuning to get to that level. All depends on how deep your wallet is with considerations for void warranty, initial purchase price, and cost of modifications.

[135Pats]

Originally Posted by roundel335

Are you referring to the twin scrolls on the exhaust side or the compressor wheel on the intake side? The N55 was developed with efficiency as first priority and power 2nd - and it's pretty good at both. The F80/82/83 engine is similar to the N54 with two turbos, but is tuned for high-end power like all M engines have been in the past. Makes more sense to buy one of those rather than re-engineer the N55 with bolt-ons and tuning to get to that level. All depends on how deep your wallet is with considerations for void warranty, initial purchase price, and cost of modifications.

Exhaust. It's a really small wheel, can't remember what profile it is off the top of my head.

Agreed on your points and to be clear, it's not a knock on the N55 at all. Even the S55 struggles to breathe up top, the stock frames that BMW tends to use produce a lot of heat and pressure. Nothing wrong with that at all for stock applications and it makes for outstanding spool; i'm continuously impressed at the throttle response with the N55 (that's where the twin scroll really helps). I have no plans to mess with the F30, have the E88 to suck money from me

Unrelated but we need to find more productive tuning avenues for the N55. Seems like flash tuning is starting to heat up which is good. But having to bench flash is meh. I'm curious to see how the N55 holds up to 6/7/8xxWHP. Have a feeling it would do a lot better than some had thought when it first came out.

[yemenmocha]

I thought it made a noticeable difference, especially in 2nd and 3rd gear under full throttle. I just wish the car came this way, stock, from the factory instead of having to add it.

[ronanz]

Originally Posted by 135Pats

Exhaust. It's a really small wheel, can't remember what profile it is off the top of my head.

Agreed on your points and to be clear, it's not a knock on the N55 at all. Even the S55 struggles to breathe up top, the stock frames that BMW tends to use produce a lot of heat and pressure. Nothing wrong with that at all for stock applications and it makes for outstanding spool; i'm continuously impressed at the throttle response with the N55 (that's where the twin scroll really helps). I have no plans to mess with the F30, have the E88 to suck money from me

Unrelated but we need to find more productive tuning avenues for the N55. Seems like flash tuning is starting to heat up which is good. But having to bench flash is meh. I'm curious to see how the N55 holds up to 6/7/8xxWHP. Have a feeling it would do a lot better than some had thought when it first came out.

This is what I'm hoping for

.

[lens]

Originally Posted by ronanz

This is what I'm hoping for

.

I would be happy with 400-450whp if it meant good long term reliability.

[ronanz]

Originally Posted by chaungo

I would be happy with 400-450whp if it meant good long term reliability.

Absolutely! Although, I'm thinking mid to high 500's...just hoping the N55 is that strong over time...

.