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      09-26-2019, 10:39 AM   #1
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Question Upgraded Turbo Owners Roll Call

I'd like to get an idea of how many people have upgraded their turbo on their N55 M2 and what they're running. If you have an upgraded turbo, please add the following:
  1. What turbo do you have?
  2. Dyno whp and type of dyno?
  3. How many lbs/psi boost?
  4. What tune are you running?
  5. What fuel are you using?
  6. Do you have an upgraded fuel pump? If so, which one?
  7. Are you using meth?
  8. Who did your install?
  9. How many miles have you put on it?
  10. Any comments, things you would have done differently, future mods?
Feel free to add pics of your setup!
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Last edited by nothingman; 09-26-2019 at 10:50 AM..
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      09-26-2019, 10:42 AM   #2
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I'll start:
  1. Pure stage 2 gen 3 turbo
  2. 517whp on Dynocom
  3. 22psi
  4. Running custom TTFS tune on MHD
  5. 100 octane Sunoco GTX260 race gas
  6. XDI35 fuel pump
  7. Plan to add meth next
  8. TTFS did my install
  9. 8k on the car, <3k on the turbo upgrade
  10. Considering going stage 3 with an EFR turbo
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Last edited by nothingman; 09-26-2019 at 10:50 AM..
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      09-26-2019, 04:14 PM   #3
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Pure Stage 2. Car is FBO with 2 step colder spark plugs (No cai), BC coil overs, also the first M2 in the USA with Pure full turbo inlet pipe - shout out to @Soofy619!
Not dynod yet
18psi
MHD Custom Flash
CA 91ron with 3 gallons of VP 100ron
Want to upgrade to Xdi ASAP!
No Meth
Install performed by 2M in San Diego CA
About 3k on turbo setup

As I did the opposite of what most M2 owners are doing (power before cosmetic mods), I really want to do the HPFP upgrade, its just very costly and I want to add some carbon to the exterior and maybe new wheels soon. However the car really needs better fueling and while the turbo made a HUGE difference in overall power and top end grunt, I'm not getting the most out of this setup with the stock fuel pump. Car runs amazing in the cold. Curious how the OP likes his current setup? Debating LPFP, Precision RW coils and going full E85. Once I do the fuel pump, might finally buy a cat back exhaust as I'm running catless dp with the oem catback. Wheels, cf body kit, some subtle vinyl accents and ill probably be done with this build.
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      09-26-2019, 05:27 PM   #4
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Quote:
Originally Posted by nothingman View Post
I'd like to get an idea of how many people have upgraded their turbo on their N55 M2 and what they're running. If you have an upgraded turbo, please add the following:

Feel free to add pics of your setup!
What turbo do you have?
  • PureTurbos Stage 2 Turbo
Dyno whp and type of dyno?
  • 529wHP 542wTQ - Dynojet
How many lbs/psi boost?
  • Running 22 PSI flat to redline
What tune are you running?
  • JordanTuned custom Bootmod3 + JB4 Port Methanol Injection in Map 6
What fuel are you using?
  • 94 Octane and 100% Methanol
Do you have an upgraded fuel pump? If so, which one?
  • Yes, XDI-35 as of recently.
Are you using meth?
  • Yes, 100% methanol through port injection with a small CM nozzle in the charge pipe for IAT suppression.
Who did your install?
  • All work completed by myself in the garage with some friends!
How many miles have you put on it?
  • Roughly 7500 miles so far!
Any comments, things you would have done differently, future mods?
  • Build thread located in my signature. As for things I wish I did differently or things I learned through the experience... I wish I did port methanol off the hop instead of trying to run just charge-pipe. I also wish I did the XDI-35 HPFP sooner! Future mods will focus more on the interior. Not much left to do performance wise.
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Last edited by Endeav; 10-03-2019 at 06:14 PM..
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      09-26-2019, 06:15 PM   #5
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Quote:
Originally Posted by Endeav View Post
Dyno whp and type of dyno?
  • Dyno'ing next Thursday on a Dynojet
  • Build thread located in my signature. As for things I wish I did differently or things I learned through the experience... I wish I did port methanol off the hop instead of trying to run just charge-pipe. I also wish I did the XDI-35 HPFP sooner! Future mods will focus more on the interior. Not much left to do performance wise.
Glad you finally got a dyno scheduled. Everyone's been wanting to see one for a long time.

You really find that you need that much meth though? 100% meth mix, port injection, plus charge pipe injection. Seems over the top to me.
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      09-26-2019, 06:20 PM   #6
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Quote:
Originally Posted by Anthony1s View Post
Glad you finally got a dyno scheduled. Everyone's been wanting to see one for a long time.

You really find that you need that much meth though? 100% meth mix, port injection, plus charge pipe injection. Seems over the top to me.
I'm looking forward to it as well. I'm running 100% just purely for the octane. The port injectors are only running at about 30% duty cycle and my trims are in the mid to low teens. I could definitely back off a bit on the methanol but it seems to be running fine now.

The chargepipe is just a CM5 nozzle that I'm using so the DME sees the IAT drop when the spray is on. Doesn't really add much fuel volume.
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      09-26-2019, 07:37 PM   #7
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Endeav and OP:
Really would love to hear more about your high-pressure fuel pump upgrade and why you were wishing you had it done sooner because I feel that way too lol.
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      09-26-2019, 09:44 PM   #8
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Quote:
Originally Posted by 5thGearPinned View Post
Endeav and OP:
Really would love to hear more about your high-pressure fuel pump upgrade and why you were wishing you had it done sooner because I feel that way too lol.
Biggest thing for me was being able to drive the car the way it's meant to be rather than "avoiding" certain situations. The port methanol injection did a really good job of covering for the weak OEM HPFP, especially if you let the car build boost from a lower RPM and slowly rolled into the throttle.

That being said, it did NOT do a good job in situations where you wanted instant throttle, instant boost, at high RPM. The methanol was just a little too slow to kick in and start spraying and the HPFP would ultimately crash. It wouldn't crash so bad as to throw a code because by then the methanol would be flowing, but you could hear the car sputter as it begged for more fuel lol. With the new HPFP I can basically drive the car much like I did when it was on the OEM turbo - downshift to high RPM and mash the throttle to lay a nice patch of rubber lol.
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      10-03-2019, 06:13 PM   #9
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Sorry for the double post but I updated my original answer to the questions. I completed my dyno today and made 529 wHP and 542wTQ.

Check the build thread for a video!
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      10-03-2019, 07:45 PM   #10
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Quote:
Originally Posted by Endeav View Post
Sorry for the double post but I updated my original answer to the questions. I completed my dyno today and made 529 wHP and 542wTQ.

Check the build thread for a video!
Congrats man..that’s gotta be a hoot to wheel around !
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      10-04-2019, 10:58 AM   #11
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Curious to see if upgraded turbo owners feel the car pulling like the M2C does at high RPM
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      10-04-2019, 12:55 PM   #12
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Quote:
Originally Posted by 963mw View Post
Curious to see if upgraded turbo owners feel the car pulling like the M2C does at high RPM
I don't have first hand experience with either of these scenarios, but comparing endeav's dyno graph to a few M2C graphs, the upgraded M2 pulls harder. It continues making power up until redline, where the M2C flatlines and (in some dyno runs) drops off around 6000rpm.

Torque also comes in more gradually and linearally on his M2, compared to M2C. Which is good for not spinning the wheels and putting the power down. But all that depends on the tune. You can tune a S55 to bring on torque in the same way. Also the torque drops off more rapidly in the M2C, while endeav's holds torque for much longer.

That being said, S55 is still capable of making more power more cheaply than N55.
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      10-04-2019, 01:19 PM   #13
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Top end is def stronger with stock Hpfp on pump gas
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      10-04-2019, 03:00 PM   #14
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Quote:
Originally Posted by Anthony1s View Post

That being said, S55 is still capable of making more power more cheaply than N55.
As it should.....it only has a second turbo...but how much hp is everyone really after..and for this chassis at that?
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      10-04-2019, 03:59 PM   #15
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Quote:
Originally Posted by GerardzM View Post
Quote:
Originally Posted by Anthony1s View Post

That being said, S55 is still capable of making more power more cheaply than N55.
As it should.....it only has a second turbo...but how much hp is everyone really after..and for this chassis at that?
Not after power here. Looking to fix the torque curve.
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      10-05-2019, 08:06 PM   #16
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1. Dinan "Big" Turbo(not that big at all)
2. 371whp/446lbft on a Dynapack
3. 17.5psi around 5k and tapering to 15 by redline
4. Custom tune via Cary Jordan/BM3
5. California 91 octane
6. XDI HPFP-60(Overkill but I was future-proofing)
7. Currently installing a meth kit
8. Mechanic friend of mine did the install
9. about 5k

Feels like stock, just, more(way more midrange punch but I attribute that to the tune). I hope with the meth I can hold more boost until redline. The way it is now, even with the boost tapering the dyno plot more or less plateaus after peak power(so in theory not tapering boost will yield more power). If I was to do it again I would go straight to a stage 2 or 3 setup but that said I don't regret it. Still planning on going with a larger turbo one day but for now the car feels really great and is a ton of fun. Has enough power to hang with my buddies M2C.

Soon I'll be switching tuning platforms and re-tuning the car for meth. Just waiting to finished the meth kit install and get a few other things flushed out.

Last edited by M2OG; 10-05-2019 at 08:48 PM..
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      10-06-2019, 11:46 AM   #17
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No intercooler?
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      10-06-2019, 01:47 PM   #18
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529WHP would suggest over 650 at the crank? Seriously? Or are we talking about different things...
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      10-06-2019, 01:58 PM   #19
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Quote:
Originally Posted by M Fifty View Post
529WHP would suggest over 650 at the crank? Seriously? Or are we talking about different things...
15% deduction would put it at 622hp, but yea. Doesn't seem that far-fetched once fuel pump and meth is added. Though he's running quite a bit more meth than most would.
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      10-07-2019, 07:33 PM   #20
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Quote:
Originally Posted by 963mw View Post
Curious to see if upgraded turbo owners feel the car pulling like the M2C does at high RPM
I haven't driven a tuned M2C. Just a stock M2C as well as a BM3 Stage 2 M4 - I have to say my M2 feels stronger in the top end than both of those setups. Not really surprising given the difference in money spent to get to each point.

Quote:
Originally Posted by M Fifty View Post
529WHP would suggest over 650 at the crank? Seriously? Or are we talking about different things...
Quote:
Originally Posted by Anthony1s View Post
15% deduction would put it at 622hp, but yea. Doesn't seem that far-fetched once fuel pump and meth is added. Though he's running quite a bit more meth than most would.
Yup, Anthony1s is probably spot on. If you apply 15% which is more reasonable drive train loss for RWD you get 622 crank... but really who cares about crank numbers aside from "bragging" rights.
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      10-09-2019, 01:15 AM   #21
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Quote:
Originally Posted by Endeav View Post
Quote:
Originally Posted by 963mw View Post
Curious to see if upgraded turbo owners feel the car pulling like the M2C does at high RPM
I haven't driven a tuned M2C. Just a stock M2C as well as a BM3 Stage 2 M4 - I have to say my M2 feels stronger in the top end than both of those setups. Not really surprising given the difference in money spent to get to each point.

Quote:
Originally Posted by M Fifty View Post
529WHP would suggest over 650 at the crank? Seriously? Or are we talking about different things...
Quote:
Originally Posted by Anthony1s View Post
15% deduction would put it at 622hp, but yea. Doesn't seem that far-fetched once fuel pump and meth is added. Though he's running quite a bit more meth than most would.
Yup, Anthony1s is probably spot on. If you apply 15% which is more reasonable drive train loss for RWD you get 622 crank... but really who cares about crank numbers aside from "bragging" rights.
Pretty crazy though... that's about double stock power? I didn't think the open deck could handle that kind of power.
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      10-09-2019, 02:10 PM   #22
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Quote:
Originally Posted by eeyang92 View Post
Pretty crazy though... that's about double stock power? I didn't think the open deck could handle that kind of power.
There are open decks that hold more power than just that. There are other limitations before that becomes an issue.
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