[DuSh]

Hi wonderful people, x5 50i owner here hoping to get a best advise to my next move. Not many tuned x5 50i so I thought community here should have more experience with this

My BPC flashed stage 1 n63tu on stock downpipes dynoed 540 lb-ft awtq and 445 awhp. No issues with car and tune, I think BPC did a great job!
I would like to get a bit more power now out of it without going with downpipes (main reason I don't want them is emission issues and smell). So I was offered trying bootmod3. Any chance I can get hp up by about 30whp? If so what is the best and easiest to go in my situation: bootmod3 or something else?

Thank you

P.S. I've also read about jb4 + MAF 3.5bar option they got 511 whp at dyno (and it looks like it's not the limit yet since 600whp can be extracted from stock turbos), but again with downpipes which I'm trying to keep stock ones for emissions and smell

[DuSh]

For sure there should be someone with n63tu engine on stock downpipes that did a tune/flash/piggyback/bootmod3 etc? All I'm looking for is a max dyno number that I can get with stock downpipes.

For those who don't like to read long posts - I'll sum up my question: I have a n63tu Stage 1 with 445awhp (dyno) and I'm wondering if it's possible to harness 30-40whp more on stock downpipes?

Any input is appreciated
(I'm trying to get answers to go one way or another. I emailed bm3 but they said it's hard to know for sure for n63tu - I'm guessing they don't have dyno numbers yet)

Come on guys, dozens of thousands n63tu engines sold in 550i/xi in US only since 2014 and not a single one who did a dyno after tune?

[wg550i]

My 550i xdrive (N63TU) is tuned by DME Tuning, and it dyno'd @ 528awhp and 588ft-lbs. Tune only stock downpipes running 93 octane.

[TheBlackGT]

Originally Posted by wg550i

My 550i xdrive (N63TU) is tuned by DME Tuning, and it dyno'd @ 528awhp and 588ft-lbs. Tune only stock downpipes running 93 octane.

Where'd you dyno it? Those are some SICK numbers!

What kind of Dyno? Do you have Stage 1 or 2?

[DuSh]

Originally Posted by wg550i

My 550i xdrive (N63TU) is tuned by DME Tuning, and it dyno'd @ 528awhp and 588ft-lbs. Tune only stock downpipes running 93 octane.

Wow, and here I am considering downpipes and getting ready to smell and emission issues only to get to 500+ awhp (not worried about torque at this point). If I can have your numbers on stock cats - who needs downpipes lol

What flash do you have?

[TheBlackGT]

Originally Posted by DuSh

Wow, and here I am considering downpipes and getting ready to smell and emission issues only to get to 500+ awhp (not worried about torque at this point). If I can have your numbers on stock cats - who needs downpipes lol

What flash do you have?

check out DME Tuning (www.instagram.com/DMETuning). One of the best tuners out there, hit him up and let him know you know TheBlackGT. he'll hook you up

[DuSh]

Originally Posted by wg550i

My 550i xdrive (N63TU) is tuned by DME Tuning, and it dyno'd @ 528awhp and 588ft-lbs. Tune only stock downpipes running 93 octane.

Can you post dyno graph?
I checked DME Tuning, but their numbers for Stage 1 are nowhere close to your numbers
(let alone they have DIN graph on their website using nm instead of lb-ft etc - needs conversion after which numbers aren't exciting at all)

[badblack550xi]

Originally Posted by DuSh

Can you post dyno graph?
I checked DME Tuning, but their numbers for Stage 1 are nowhere close to your numbers
(let alone they have DIN graph on their website using nm instead of lb-ft etc - needs conversion after which numbers aren't exciting at all)

Tune only DME cars run 11.7 @118

[DuSh]

Originally Posted by badblack550xi

Tune only DME cars run 11.7 @118

I asked many reputable tuners (BPC, BMS, MissionPerf etc) about Stage 1 tune and pretty much all their responses were in line that without DPs it's very risky for n63tu engine to accomplish such numbers or even close to it. I checked DME Tuning webpage and their info confirms this as well - Stage 1 has nowhere near those numbers posted by wg550i. Hence why I still think it would be nice to see dyno graph at least. I mean if someone did a dyno - it takes 20 sec to upload proof - you know what I'm saying? Here's mine:

[535_BiTurbo]

11.7@118 is what all the 470-480awhp F10s seem to be running

[badblack550xi]

Originally Posted by 535_BiTurbo

11.7@118 is what all the 470-480awhp F10s seem to be running

i am sure it's more than that unless you're speaking about mustang numbers.

[DuSh]

Originally Posted by badblack550xi

i am sure it's more than that unless you're speaking about mustang numbers.

Stage 1 or 2?

[TheBlackGT]

Originally Posted by DuSh

Can you post dyno graph?
I checked DME Tuning, but their numbers for Stage 1 are nowhere close to your numbers
(let alone they have DIN graph on their website using nm instead of lb-ft etc - needs conversion after which numbers aren't exciting at all)

Those graphs online are very very conservative. Trust me.

[wg550i]

I have S1+. It was dyno'd at Labworx (previously powerhous) there are mustang numbers and corrected numbers to the dynojet DME otherwise uses at Precision tuning.

[DuSh]

Now you guys are making me to question all the smart guys Terry, BPC etc. I'm torn between this Stage 1+ numbers (with stock downpipes) and what reputable tuners say (and have on their website as dyno)
I don't know what's going on

[DuSh]

Ok I think I found the answer. My dyno is dyno dynamics “heartbreaker” one, while wg550i is mustang dyno (labworx). Simply put it’s very likely my 445 awhp is same as his Stage 1+ number and it looks like my 550awtq is even more (a lot more)
My conclusion is that Terry or Bob from BPC were right all this time: no free cheese. Lesson learned for me is to go with downpipes if I want to increase power more than I already have and pay attention to dyno type DD, mustang, jet etc

[535_BiTurbo]

Originally Posted by badblack550xi

i am sure it's more than that unless you're speaking about mustang numbers.

yea, I was quoting Mustang numbers

[TheBlackGT]

Originally Posted by DuSh

Ok I think I found the answer. My dyno is dyno dynamics “heartbreaker” one, while wg550i is mustang dyno (labworx). Simply put it’s very likely my 445 awhp is same as his Stage 1+ number and it looks like my 550awtq is even more (a lot more)
My conclusion is that Terry or Bob from BPC were right all this time: no free cheese. Lesson learned for me is to go with downpipes if I want to increase power more than I already have and pay attention to dyno type DD, mustang, jet etc

Even then, pretty sure the DME tune is stronger than BPC. Every tuner varies slightly. Mustang dynos are conservative as well anyways.

[Teddylongtooth]

Why not get high flow catted down pipes?

[DuSh]

Originally Posted by Teddylongtooth

Why not get high flow catted down pipes?

That's an option yes, but at some point price is becoming a concern. Catless ones are $1100-1200 to begin with, and then catted will be around $1600+
Add to that labor $500-900 (depending where you live). Add to that Stage 2 tune $1200+ and some goodies like MAF sensor upgrade to 3.5bar $300
It all ads up to a hefty price
But I'm thinking about it

[DuSh]

Originally Posted by TheBlackGT

Even then, pretty sure the DME tune is stronger than BPC. Every tuner varies slightly. Mustang dynos are conservative as well anyways.

Down below all is my opinion
Mustang dyno shows about 10% more than Dyno Dynamics. My torque is about 540 awtq which puts me about 595-600 awtq at mustang dyno. DME Tuning numbers were 588 max run and that is corrected dynojet, uncorrected were 524 (so I have about 75-80 wtq more lol)

Now with whp it's a bit better - DME Tuning has 528 whp (max) dynojet corrected and mustang value is 470 whp. My Dyno Dynamics BPC flashed numbers are 445awhp or 490awhp mustang corrected - so I'm still ahead by around 20whp

Now the final shocker - my run was made on 91 pump octane. BPC tune is optimized for 93 octane - that will yield about 25-35whp more (but I yet have to run it on 93)

Also, I'm not sure how my xdrive compares to his rwd? I'm guessing I have more drivetrain losses - which means my AWTQ and AWHP is yet another 5% more due to unaccounted power (losses compared to rwd)

So as you can see BPC Stage 1 flash mops the floor with DME Tuning - not that I care, I'm just showing that you have to talk numbers to see picture, and ideally we need to talk same dyno numbers. My x5 50i 5200lbs SAV timed 3.8sec at 0-60 - and I weigh 600lbs more https://streamable.com/23nja not sure about 1/4 haven't done it yet

I was mistakenly thinking someone has a better tune and there's a possibility to squeeze more out of stock downpipes, but now I can see that it's not the case. There's no other way but to succumb to DPs, intake etc


I'll repeat one more time just in case someone will stumble to this thread in the future looking for same answers: I personally emailed almost all tuners like Terry or Bob (BMS, BPC), I also emailed couple other tuners like Mission Performance etc. I explained my situation and asked if there's any room for improvement. ALL of them replied same thing: NOT without DPs, intake etc. I was dissapointed and hence I created this thread hoping that maybe here at 5 series community someone had done it better with n63tu. So far I'm seeing that numbers are either a bit less than what I have or a lot less than what I have
I think it's safe to say those tuners like Terry or Bob have vast knowledge and years of experience and you just can't cheat on physics - there's limit on dyno numbers with Stage 1 no matter how you call it Stage 1+ or Stage 1 Superman Ultra lol - numbers don't lie (unless someone will show me better dyno numbers)

[TheBlackGT]

Originally Posted by DuSh

Down below all is my opinion
Mustang dyno shows about 10% more than Dyno Dynamics. My torque is about 540 awtq which puts me about 595-600 awtq at mustang dyno. DME Tuning numbers were 588 max run and that is corrected dynojet, uncorrected were 524 (so I have about 75-80 wtq more lol)

Now with whp it's a bit better - DME Tuning has 528 whp (max) dynojet corrected and mustang value is 470 whp. My Dyno Dynamics BPC flashed numbers are 445awhp or 490awhp mustang corrected - so I'm still ahead by around 20whp

I did a little background research and spoke with a few dyno-tuning friends. Mustangs/Dyno Dynamics (let's call it DD for short) are actually quite close, although DD does read between 2-3% lower on average. However a DD does read 12-15% lower than a dynojet, and with your numbers factored at 15% difference in thats around 512/622wtq. Still very impressive. Also btw, WG550i's car is AWD not RWD.

BPC claims 127whp gains on their site, DME has shown gains of 140whp. The difference isn't much; at the end of the day I'm sure both tunes share commonalities.

Nonetheless, these cars are stupid fast with just simple tunes.