[SeanWRT]

Think it's approriate to start a new thread sharing some dyno results of mine and my friends'.

My car is a Euro Spec M2 MY2017 on FBO plus STG1 turbo on 98RON (93AKI), custom tuned by ProTuning Freak.
No meth, No PI, No ethanol. See more on my build link below.
http://f87.bimmerpost.com/forums/sho....php?t=1416389

All runs are on same day and same dyno. Numbers are corrected to STD Smoothing 5, to the liking of US guys here. As it's a cool day (ambient temp 50F, humidity 50%), heat soak isn't our problem. BTW, the uncorrected numbers would even be a bit higher, due to negative correction factor (cool ambient temp).

I'm running a progressive boost map. Not until 4000rpm do I apply more load than a typical N55 EWG OTS tune that nowadays could be found just everywhere and that goes flat out with boost surge at down low. My map starts to really shine from 4k5 up, pushing as hard as fuelling and octane allow and holding aggressiveness to redline, which is well reflected with a flat torque curve and a power peak at 6200~6300rpm - not your average N55 EWG tunes that stop making more from 5500.

Truth is, with a proper baseline, breaking 400whp is right next to impossible for a stock turbo N55 on pump gas. There is only so much you can do tuning around fueling and octane limit.

My baselines are as following:
1) M2 bone stock - 340whp
2) M4 ZCP bone stock - 396whp
3) The N55 1/4 mile record breaking (11.11@125mph) 335xi PWG PS2+Meth - 460whp, it holds 25psi and 10+ignition as log shows. Everyone else on here of similar setup pushing 25psi would definitely show you 500+whp. Too much hype on forum.

Let the pictures speak then

[Yellowflash21]

I would like to know 62-124 mph time if it's possible...

[ZM2]

Nice work. What downpipe are you using? How would you compare your results to tehboosts’s FBO, no turbo upgrade on 91 octane results?

[NO_USER_]

Awesome Sean! I like that flat torque curve!!

[cookiesowns]

That area under the curve is really impressive. Nice work PTF!

[FSociety]

Got a log of the runs?

My HCP PTF Map 16psi made 375AWHP 433AWTQ in 90F / Eurocharged Toronto Dyno when I took a family trip up to Niagara Falls back in September.

I suspect this NEW PTF OTS Map with all the new tables that was released after November has a better powerband since I also tested against some of my friends (Real World Testing on this side) but we'll see so far I managed with Dragy 0-60 4.19s and 1/4 mile 12.4@110 (beating my jb4 e30 records that only managed 12.8@105)

[velociti]

I like that you went for top-end power over low-end torque. I don’t understand why so many people love the idea of monster low-end torque when the car physically can’t put it to the ground in the first couple gears. Nice looking powerband, man!

[SeanWRT]

Originally Posted by velociti

I like that you went for top-end power over low-end torque. I don't understand why so many people love the idea of monster low-end torque when the car physically can't put it to the ground in the first couple gears. Nice looking powerband, man!

I have very good reasons ditching low end torque.
1) Intake air heat
2) Fuel pump stress.
3) The RPM range on WOT is always above 4k, except on 1st gear where power is limited by traction anyway.
To me, low end boost makes nothing valuable but the bragging right of "Maximum Torque" on dyno paper.

Originally Posted by FSociety

Got a log of the runs?

My HCP PTF Map 16psi made 375AWHP 433AWTQ in 90F / Eurocharged Toronto Dyno when I took a family trip up to Niagara Falls back in September.

I suspect this NEW PTF OTS Map with all the new tables that was released after November has a better powerband since I also tested against some of my friends (Real World Testing on this side) but we'll see so far I managed with Dragy 0-60 4.19s and 1/4 mile 12.4@110 (beating my jb4 e30 records that only managed 12.8@105)

Sure buddy, log sent you via PM.
I have not done 1/4 mile testing on STG1 turbo. But my stock turbo constantly did 12.3@115~116mph on 93OCT, beating your time already. haha

Originally Posted by ZM2

Nice work. What downpipe are you using? How would you compare your results to tehboosts FBO, no turbo upgrade on 91 octane results?

I'm using Euro 6 HJS 300 cell dp. I have a review thread on it. From testing on multiple M2s, we believe high flow and catless make no difference at these boost level. N55 is much more limited by octane, fueling and cooling.

Tehboost's 400whp was very solid. From his log, load is strong all the way to 5k5 rpm on exceptionally good timing for 91OCT (almost capped out all the time). No idea how crappy CA 91OCT holds up that well. I reviewed many other 380-400whp logs and knew they're nothing but hypes, compared to Tehboost.

At 5k5 rpm, Tehboost's peak power point, his boost was 1.5psi lower than mine (corrected to same IAT), but on slightly better timing. That should be some 10whp difference at that point to my guess, which means he'd be 390whp on my dyno everything else being equal.

[SeanWRT]

Originally Posted by Yellowflash21

I would like to know 62-124 mph time if it's possible...

Below is a time I did in Oct 2017 on a conservative map. Probably I'd do 0.3-0.5s better with current map. But not tested yet.

Stock m2 does high 10s from the same testing equipment. BTW 140i stock does 11+s that I guarantee you.

[mike@x-ph.com]

Nice

[MTWO]

Nicely done! Beautiful curve! It must feel really great pulling lineraly all the way up like that.

[Orange fever]

very cool for a STG1 Turbo, since you're the first one

[harkes]

Haha I like how Li Wang just had to add the octane booster - I bet he didn't want to accept the 460whp

Great post Sean! Confirm what I have always been saying. Maxing out the PS2 will not net you 500whp - more likely 500 crank hp and change.

[SeanWRT]

Driving M4 all the time, I am familiar with S55 characters. It has a responsive bottom end and a torque blast from somewhere 3k~4k, all the way to fuel cut.

So my motor is tuned like a S55 except for a smoother and earlier power build up.

Originally Posted by MTWO

Nicely done! Beautiful curve! It must feel really great pulling lineraly all the way up like that.

Originally Posted by Orange fever

very cool for a STG1 Turbo, since you're the first one

[SeanWRT]

You're with me. Always be conservative (or realistic) on numbers.

Wang accepted it, because making record with less power is something to be happy about.

Generally, hybrid turbo is overrated, even more so in N55 world where there's no real competitions as of yet.

Let me be completely unbiased by saying this - STG1 turbo is not a rewarding mod in terms of power. All it nets you is 20whp more in peak and a better top end.

Everything being equal, PS2 flows 3psi more, beyond that it's pushing turbo off efficiency. Plus it's already out of pump gas territory. So credit also goes to higher octane and cooling liquid. PS2 is less restrictive from turbine end for sure but god knows by how much. For 500+whp it's just a little too ambitious if your dyno reads right.

Originally Posted by harkes

Haha I like how Li Wang just had to add the octane booster - I bet he didn't want to accept the 460whp

Great post Sean! Confirm what I have always been saying. Maxing out the PS2 will not net you 500whp - more likely 500 crank hp and change.

[MTWO]

What’s the difference in spool up between Stage 1 and 2? You seem to have that boost dialed in really nicely with BM3 on a Stage 1!

[SeanWRT]

Originally Posted by MTWO

What’s the difference in spool up between Stage 1 and 2? You seem to have that boost dialed in really nicely with BM3 on a Stage 1!

There is noticeably more wait on power with a STG2 turbo, especially from a back to back driving. Also much more power, make no mistake. I've said it many times - STG2 is every bit worth it to the most.

On stock BW turbo frame, beyond STG1 everything is a tradeoff - well I even thought STG1 compromises spool up a bit until log and dyno prove otherwise.

Along with power goal, you will want to think about what to give. To me, injection kit of any kind and flex fuel are no-goes. Which means, without DI fueling solution, I don't even consider STG2 as an option.

[ceedawg]

Thats a beautful curve. Your car must have some nice topend!!

[Mike0105]

That's the perfect turbocharged power band if you ask me, nicely done!
Mike

[SeanWRT]

See below 100-200kph(62-124mph) time with current map. For comparison, our M4 GTS does 8.5s, consistently.

[Lukeni]

Originally Posted by SeanWRT

Think it's approriate to start a new thread sharing some dyno results of mine and my friends'.

My car is a Euro Spec M2 MY2017 on FBO plus STG1 turbo on 98RON (93AKI), custom tuned by ProTuning Freak.
No meth, No PI, No ethanol. See more on my build link below.
http://f87.bimmerpost.com/forums/sho....php?t=1416389

All runs are on same day and same dyno. Numbers are corrected to STD Smoothing 5, to the liking of US guys here. As it's a cool day (ambient temp 50F, humidity 50%), heat soak isn't our problem. BTW, the uncorrected numbers would even be a bit higher, due to negative correction factor (cool ambient temp).

I'm running a progressive boost map. Not until 4000rpm do I apply more load than a typical N55 EWG OTS tune that nowadays could be found just everywhere and that goes flat out with boost surge at down low. My map starts to really shine from 4k5 up, pushing as hard as fuelling and octane allow and holding aggressiveness to redline, which is well reflected with a flat torque curve and a power peak at 6200~6300rpm - not your average N55 EWG tunes that stop making more from 5500.

Truth is, with a proper baseline, breaking 400whp is right next to impossible for a stock turbo N55 on pump gas. There is only so much you can do tuning around fueling and octane limit.

My baselines are as following:
1) M2 bone stock - 340whp
2) M4 ZCP bone stock - 396whp
3) The N55 1/4 mile record breaking (11.11@125mph) 335xi PWG PS2+Meth - 460whp, it holds 25psi and 10+ignition as log shows. Everyone else on here of similar setup pushing 25psi would definitely show you 500+whp. Too much hype on forum.

Let the pictures speak then

Very nice power delivery!

Do you think there are similar results possible (on a lower power level of course) without a turbo upgrade?

99% of all the tunes are losing power up top from 5500 rpm on to redline. I am looking for a tune which makes peak power up top at 6000-6500, but cant find any (except maybe active autowerke, but not sure about their dynochart).

My car is FBO as well. Fuelling won't be an issue since here in europe we got the good stuff.

Cheers!

[Daleb]

Originally Posted by SeanWRT

See below 100-200kph(62-124mph) time with current map. For comparison, our M4 GTS does 8.5s, consistently.

Not bad for pump fuel. What is the quality of fuel like where you are?

Ever considered meth injection? Should see you nicely in the 7s over 100-200.