[CryptoM550i]

Best tune option for catless , High flow x pipes, OEM exhaust.

Go!

Considering BM3 (if available) definitely open to options and things to consider.

I drive the car in the evenings a few miles each day and on the weekends. Outside of that I have my company car.

[I3LaZeN]

BM3!

[NNJCarGuy]

BM3 hands down

[23109VC]

Originally Posted by NNJCarGuy

BM3 hands down

How much extra power would someone with a 2018 get with just a BM3 - assuming everything else is bone stock on California 91 octane?

[maDjzo]

Originally Posted by 23109VC

How much extra power would someone with a 2018 get with just a BM3 - assuming everything else is bone stock on California 91 octane?

https://bootmod3.com/collections/boo...m550-750i-tune

[23109VC]

Originally Posted by maDjzo

https://bootmod3.com/collections/boo...m550-750i-tune

What's your thoughts on something piggyback like JB4? If you were running at JB4… and removed it every time he went in for service if you ended up having some kind of engine problems do you think he would still fly under the radar for warranty work?

I'm assuming with a BM3 flash even if you take it out they're going to know it was there and you're flagged?!?

[maDjzo]

Originally Posted by 23109VC

What's your thoughts on something piggyback like JB4? If you were running at JB4… and removed it every time he went in for service if you ended up having some kind of engine problems do you think he would still fly under the radar for warranty work?

I'm assuming with a BM3 flash even if you take it out they're going to know it was there and you're flagged?!?

Yea any piggy back it's as simple as removing driving a bit and taking it in no issues. Flash tunes are a different story, even after flashing stock and re-locking DME dealer can still tell. With that said, there's been people who re-locked drove 100+ miles and dealer had no idea, cars were even traded in and dealer ended up re selling them. Others have gotten it serviced with the tube etc. I'm personally not flashing anything until CPO is up, my car is at dealer now needing thermostat replacement lol.

[23109VC]

Originally Posted by maDjzo

Yea any piggy back it's as simple as removing driving a bit and taking it in no issues. Flash tunes are a different story, even after flashing stock and re-locking DME dealer can still tell. With that said, there's been people who re-locked drove 100+ miles and dealer had no idea, cars were even traded in and dealer ended up re selling them. Others have gotten it serviced with the tube etc. I'm personally not flashing anything until CPO is up, my car is at dealer now needing thermostat replacement lol.

How long does it take to install the HB4? once you've done it and know what to do - about how long does it take to remove it and reinstall it for dealer visits?

[mike@x-ph.com]

Flashtune: Bm3
piggyback: Jb4

both will provide more than enough power

[CryptoM550i]

Originally Posted by mike@x-ph.com

Flashtune: Bm3
piggyback: Jb4

both will provide more than enough power

Going with BM3 just waiting to get my catless dwn pipes installed.

[mike@x-ph.com]

Originally Posted by CryptoM550i

Going with BM3 just waiting to get my catless dwn pipes installed.

[SctsOut06]

Just did a BM3 three weeks ago. Holy crap it's awesome.

And the support from Protuningfreaks is awesome

[maDjzo]

Originally Posted by imnodnarb

Just did a BM3 three weeks ago. Holy crap it's awesome.

And the support from Protuningfreaks is awesome

Stage 1/2? Stock DPs?

[SctsOut06]

Originally Posted by maDjzo

Stage 1/2? Stock DPs?

I did the stage 1 93 tune.

Stock DPs for now.

I was consistently getting low 4's 0-60 with a high DA, now I'm very consistent around 3.6 on a 2018 M550 (still pretty high DA).

[DonDm550i]

Originally Posted by 23109VC

What's your thoughts on something piggyback like JB4? If you were running at JB4… and removed it every time he went in for service if you ended up having some kind of engine problems do you think he would still fly under the radar for warranty work?

I'm assuming with a BM3 flash even if you take it out they're going to know it was there and you're flagged?!?

Looking for a little more out of my 2018 M550i and would like to do a Stage 1 tune. It's my daily driver so reliability is a factor vs. 10 extra HP.

Not sure why ACS is $14 K for a piggyback.

Any experience with the new Dinan X?

Appreciate any guidance.

DD