[CanadianM2]

Hey all I’ve been battling my local dyno to get above 400whp on Canadian 91 and this is my progress so far

365/376 fbo stock tune
381/421 fbo bm3 s2 91 acn
393/448 fbo bm3 s2 91 with DS15 HPFP

Is it worth getting a custom tune for my upgraded HPFP? I can't run the stage 2+ because the lowest fuel available on BM3 is 93, I submitted a ticket to them thinking they would work with me to alter a map to accommodate me. The only reply I got from them so far is “we haven’t made that map on 91 for your car yet”

I’ve been told I can use 8oz of boostane on a full tank and should be able to run the 93 2+ tune without timing corrections but Id rather just stick to fuel for right now.

Here’s the log for my 393/448 dyno as well https://bootmod3.net/log?id=663bee66e3d9dc276b3d514f

[AmuroRay]

People used to say there was an 80/20 rule. The 80% or the power was 20% of the cost, and the last 20% of power was 80% of the cost.

It’s just a number. What are your goals? You can do custom for a safer tune that gives you all of the power and maybe a bit more meat under the curve if you want. But 91oct is just going to limit you.

Personally, I would LOVE to see you do it, but I want to be honest with you as well. I say go for it. But don’t have any delusions on making huge power on 91.

Do you have an inlet, intake, or exhaust mid pipe? Those can Free up some efficiency in the turbo and add a handful of extra power.

[CanadianM2]

Originally Posted by AmuroRay

People used to say there was an 80/20 rule. The 80% or the power was 20% of the cost, and the last 20% of power was 80% of the cost.

It’s just a number. What are your goals? You can do custom for a safer tune that gives you all of the power and maybe a bit more meat under the curve if you want. But 91oct is just going to limit you.

Personally, I would LOVE to see you do it, but I want to be honest with you as well. I say go for it. But don’t have any delusions on making huge power on 91.

Do you have an inlet, intake, or exhaust mid pipe? Those can Free up some efficiency in the turbo and add a handful of extra power.

So far I have the following on the car
CTS catless downpipe
CTS Turbo inlet
CTS Intake
CTS IC
VRSF CP
GFB DV+
Dorch DS15

Is there a easy solution for midpipe that would actually benefit me with a small power increase?

If I went for a custom tune I’d be hoping to see 400-410whp and around 450-480 wtq. I’ve been considering using David Shoup as he has a N55 M2 as well and supposedly has tuned lots of them

[AmuroRay]

Originally Posted by CanadianM2

So far I have the following on the car
CTS catless downpipe
CTS Turbo inlet
CTS Intake
CTS IC
VRSF CP
GFB DV+
Dorch DS15

Is there a easy solution for midpipe that would actually benefit me with a small power increase?

If I went for a custom tune I’d be hoping to see 400-410whp and around 450-480 wtq. I’ve been considering using David Shoup as he has a N55 M2 as well and supposedly has tuned lots of them

I’d ask David for dynographs and if he tunes VVT (vanos) on the dyno. But for the midpipe - you can just buy one without the muffler - I know XPH sells them, which is where I bought my AWE* unit from.

https://f87.bimmerpost.com/forums/sh...1455188&page=2

This is about 6 years old now, but it’s possible to do 400whp on 91.

[CanadianM2]

Originally Posted by AmuroRay

I’d ask David for dynographs and if he tunes VVT (vanos) on the dyno. But for the midpipe - you can just buy one without the muffler - I know XPH sells them, which is where I bought my AFE unit from.

https://f87.bimmerpost.com/forums/sh...1455188&page=2

This is about 6 years old now, but it’s possible to do 400whp on 91.

Now that my car is getting to this point, I consider doing a small, cheaper turbo upgrade to get a little more power & hopefully a safer tune. Pure500/ps2 or N55+ come to mind. I like the p750 but it’s substantially more money.

Me and you both seem to believe it’s possible to do 400whp on 91 with stock turbo, I had someone on the Facebook group that claimed he was a tuner saying it’s not possible.

If I go that route I would hope the P500 could get me around 430whp or above

[AmuroRay]

Originally Posted by CanadianM2

Now that my car is getting to this point, I consider doing a small, cheaper turbo upgrade to get a little more power & hopefully a safer tune. Pure500/ps2 or N55+ come to mind. I like the p750 but it’s substantially more money.

Me and you both seem to believe it’s possible to do 400whp on 91 with stock turbo, I had someone on the Facebook group that claimed he was a tuner saying it’s not possible.

If I go that route I would hope the P500 could get me around 430whp or above

More motivation to prove him wrong.
I’m still waiting on the results from the P500, but it’s possible you could gain 20whp or so with it.

[ThreeStripes]

I should have some dyno results to share once my tuning is concluded but I wouldn’t advise getting the pure500 without going ethanol.

The juice really only seems worth the squeeze if you’re going to turn it up in my opinion.

*edit Ripped 3rd gear on map2 (93oct) this morning and man it pulls so much better above 5000. It’s a lot of money to spend if you’re limited to 91 but it does not suck and it’s as fun around town as it was on the stock turbo.

The dyno charts will really tell the story here. Can’t wait to actually measure what it’s doing.

PS the Pure500 and PS2 provide vastly different experiences for install and for around town driving. I wouldn’t lump them together for these reasons and if you’re limited to 91 I would scratch the PS2 from your list. The time to boost on the N55+ is also apparently shit so I would avoid.

[ericlr1225]

Originally Posted by ThreeStripes

I should have some dyno results to share once my tuning is concluded but I wouldn’t advise getting the pure500 without going ethanol.

The juice really only seems worth the squeeze if you’re going to turn it up in my opinion.

*edit Ripped 3rd gear on map2 (93oct) this morning and man it pulls so much better above 5000. It’s a lot of money to spend if you’re limited to 91 but it does not suck and it’s as fun around town as it was on the stock turbo.

The dyno charts will really tell the story here. Can’t wait to actually measure what it’s doing.

PS the Pure500 and PS2 provide vastly different experiences for install and for around town driving. I wouldn’t lump them together for these reasons and if you’re limited to 91 I would scratch the PS2 from your list. The time to boost on the N55+ is also apparently shit so I would avoid.

You're funny, I already shared logs to show spool time both in 3rd and 4th with N55+. If it's still too slow for you...maybe keep stock turbo is the way.

[ThreeStripes]

Originally Posted by ericlr1225

You're funny, I already shared logs to show spool time both in 3rd and 4th with N55+. If it's still too slow for you...maybe keep stock turbo is the way.

My apologies. Must have missed this.

[AmuroRay]

Originally Posted by ThreeStripes

My apologies. Must have missed this.

I did too, but I found what I think he's referencing:

https://f87.bimmerpost.com/forums/sh...&postcount=276

[ThreeStripes]

Looking at this, I’m glad I went Pure500.

[ericlr1225]

Originally Posted by AmuroRay

I did too, but I found what I think he's referencing:

https://f87.bimmerpost.com/forums/sh...&postcount=276

https://www.bootmod3.net/log?id=6629...28fe30eb09a5e5

This is an EU5 testing log took in March. It is probably close to pure500's boost level, 3rd gear manual. It's gonna hit S55 EU6 injector limit around this boost level anyway. I always start logging around 2500rpm.

Final revision is running 23psi initial boost, 26-27psi peak, and 24-25psi redline, It's been logging only in 4th gear for a long time since 3rd gear always has traction issue. From my testing results, N55+ spools slightly slower than stock turbo. Same hardware. The fastest It achieved is close to 400rpm for initial 22psi boost while logging. Sometimes a bit slower, depends on conditions but I don't think you can feel any difference while driving. Small turbos all spool fast. N55+ can make 540-550whp with the extra exhaust manifold and more rigid shaft. Pure500 is probably around 480-500whp(needs more data) about the same price. Fastest N55+ 1/4mile time is 10.72s trap speed 129mph with F10 535 4wd. It's just customer's personal preference. Quality-wise, wastegates issue is pretty common for Pures, a lot of cases reported in facebook groups but they stand behind their products. I pushed my N55+ hard with Ethanol for 6 months, no problem so far. They are all made in China just QC'ed in US.

Below is the log, full weight F10 with N55+ turbo, Different tuning strategy, tuned by Wedge performance, typical high tq initial boost then tapering down slightly.
https://datazap.me/u/mikesrex/quarte...og=0&data=4-20

[ThreeStripes]

Originally Posted by ericlr1225

https://www.bootmod3.net/log?id=6629...28fe30eb09a5e5

This is an EU5 testing log took in March. It is probably close to pure500's boost level, 3rd gear manual. It's gonna hit S55 EU6 injector limit around this boost level anyway. I always start logging around 2500rpm.

Final revision is running 23psi initial boost, 26-27psi peak, and 24-25psi redline, It's been logging only in 4th gear for a long time since 3rd gear always has traction issue. From my testing results, N55+ spools slightly slower than stock turbo. Same hardware. The fastest It achieved is close to 400rpm for initial 22psi boost while logging. Sometimes a bit slower, depends on conditions but I don't think you can feel any difference while driving. Small turbos all spool fast. N55+ can make 540-550whp with the extra exhaust manifold and more rigid shaft. Pure500 is probably around 480-500whp(needs more data) about the same price. Fastest N55+ 1/4mile time is 10.72s trap speed 129mph with F10 535 4wd. It's just customer's personal preference. Quality-wise, wastegates issue is pretty common for Pures, a lot of cases reported in facebook groups but they stand behind their products. I pushed my N55+ hard with Ethanol for 6 months, no problem so far. They are all made in China just QC'ed in US.

Below is the log, full weight F10 with N55+ turbo, Different tuning strategy, tuned by Wedge performance, typical high tq initial boost then tapering down slightly.
https://datazap.me/u/mikesrex/quarte...og=0&data=4-20

Thanks for sharing. Agree it’s all about aligning part selection with goals. For me the trade off on time to boost wasn’t worth the extra power potential. I’ll share logs and dyno charts for 93 and emix when they’re ready. Looking like I’m 4-5weeks away from that.

[CanadianM2]

Little bit of an update it looks like BM3 is going to be helping me out!

If we can make some gains we are happy with I will definitely take it back for another dyno run.

I’ve noticed my IAT’s don’t seem to drop much when I start a pull, so maybe I should look for another intercooler.

[CanadianM2]

Here is a log of the base map stage 2+ 91 I received https://bootmod3.net/log?id=66468496de0a1e7044fd6c3a

Felt strong to me but I was watching my timing gauges throughout the pull so didn’t get the full effect + I had a passenger at the time.

Curious what the 1st revision will include

[AmuroRay]

Originally Posted by CanadianM2

Here is a log of the base map stage 2+ 91 I received https://bootmod3.net/log?id=66468496de0a1e7044fd6c3a

Felt strong to me but I was watching my timing gauges throughout the pull so didn’t get the full effect + I had a passenger at the time.

Curious what the 1st revision will include

Can you turn on RAM actual load - I'd like to see what that's doing.

[AmuroRay]

Originally Posted by CanadianM2

Here is a log of the base map stage 2+ 91 I received https://bootmod3.net/log?id=66468496de0a1e7044fd6c3a

Felt strong to me but I was watching my timing gauges throughout the pull so didn’t get the full effect + I had a passenger at the time.

Curious what the 1st revision will include

Any update?

[CanadianM2]

Originally Posted by AmuroRay

Any update?

I was gonna wait until I had some dyno numbers to post but haven’t gotten around to getting hat just yet.

We finished up the tuning with 3 revisions and it seems we are just trying to strengthen the midrange.

https://bootmod3.net/log?id=664ef7a29d2d170d3a3a2f5d

Car feels stout to me but it’s hard to compare butt feel because the difference is likely very minimal. I’m guessing 400+ though which was the goal.

Will update when I get the chance.

[AmuroRay]

Originally Posted by CanadianM2

I was gonna wait until I had some dyno numbers to post but haven’t gotten around to getting hat just yet.

We finished up the tuning with 3 revisions and it seems we are just trying to strengthen the midrange.

https://bootmod3.net/log?id=664ef7a29d2d170d3a3a2f5d

Car feels stout to me but it’s hard to compare butt feel because the difference is likely very minimal. I’m guessing 400+ though which was the goal.

Will update when I get the chance.

Go back to the OTS tune and compare how it drives to this current one, I'm sure you're going to feel a difference.

[CanadianM2]

Originally Posted by AmuroRay

Go back to the OTS tune and compare how it drives to this current one, I'm sure you're going to feel a difference.

Good chance I would yeah, I think my next modification is going to be a different intercooler.

A friend installed a VSRF race on his M235i and we logged both our cars the same day and without a doubt the larger VRSF was much better.

Off the top of my head we both started in 3rd 3k rpm and my IAT dropped 3 degrees and then immediately climbed to 5 over the start point by the end of the gear.

While his dropped 5 degrees and stayed there consistently even after letting off at the top of the gear.

It was kind of an extreme test though with temps around 31 Celsius (heatwave)

for the most part summer temps here vary from 20-25

[AmuroRay]

Originally Posted by CanadianM2

Good chance I would yeah, I think my next modification is going to be a different intercooler.

A friend installed a VSRF race on his M235i and we logged both our cars the same day and without a doubt the larger VRSF was much better.

Off the top of my head we both started in 3rd 3k rpm and my IAT dropped 3 degrees and then immediately climbed to 5 over the start point by the end of the gear.

While his dropped 5 degrees and stayed there consistently even after letting off at the top of the gear.

It was kind of an extreme test though with temps around 31 Celsius (heatwave)

for the most part summer temps here vary from 20-25

It's the intercooler I run - I typically see 7-12F above ambient at most, even during our 93-99F days. Keep in mind, you'll need an M235i cross brace, or to cut your stock one.

I was reviewing your log and it looks good, I can't wait to see what it does on the dyno - I makes me realllly hope I can get my tune dialed in. Any way you can select the "Load actual Ram" on your BM3 parameters? I BM3 is buggy with some of the data channels so it's hard to see things like Mass airflow and Load.

[CanadianM2]

Originally Posted by AmuroRay

It's the intercooler I run - I typically see 7-12F above ambient at most, even during our 93-99F days. Keep in mind, you'll need an M235i cross brace, or to cut your stock one.

I was reviewing your log and it looks good, I can't wait to see what it does on the dyno - I makes me realllly hope I can get my tune dialed in. Any way you can select the "Load actual Ram" on your BM3 parameters? I BM3 is buggy with some of the data channels so it's hard to see things like Mass airflow and Load.

Needing the M235i brace is what kept me from ordering the VRSF in the first place, but I guess I should have
do you know of a IC that performs as well that is smaller than the VRSF?

I looked for the load actual ram when you originally commented and didn’t see it but I will check again and do another log.
My most recent logs weren’t as clean timing wise but I did the log on a super hot day so once it cools down I will get it onto the dyno.

I have 6 cans of boostane that my friend gave me.. in theory I can use 8oz and be octane safe to run the 93 tunes, stage 2 93+ would be a huge increase over my 91 with only 8oz needed per use.

I read it can foul plugs and turn things orange but a lot of people have seemingly used long term with no real issues… I’m still weary about it though! If I do use it, it will be sparingly.