[motivman]

can any log experts look at my log and verify what might be going on with my car? I get really good logs with stage 2 e30 tune, but with stage 2+, car does not feel good. I never get drivetrain malfunction in the regular stage 2+ e30 tune, but with the multimap stage 2+ tune, I get drivetrain malfunction when going WOT in 5th or 6th gear. the code is usually for boost pressure too high. I have changed my chargepipe tmap to 3.5 bar, but still does not make a difference. I have also smoke test on my car, but no boost leaks. I am unsure what the issue is at this point and need help figuring it out.

Stage 2+ log, car did not feel good AT ALL at the beginning of the WOT pull

https://www.bootmod3.net/log?id=60d7...0b430f294b44ae

this one feels better, but still not perfect

https://www.bootmod3.net/log?id=60d7...729b405560ff7b

multimap stage 2+

https://www.bootmod3.net/log?id=60d7...729b405560ff4e

stage 2 E30 log, car feels good and fast!
https://www.bootmod3.net/log?id=60d7...729b3fd8cf0c59
https://www.bootmod3.net/log?id=60d7...0b430f294b471a
https://www.bootmod3.net/log?id=60d7...90c65d619cd176
https://www.bootmod3.net/log?id=60d7...0b430eaaa75de2

something about the stage 2+, my car does not like... but stage 2 e30, works just fine.

Car is 6MT, FBO, running Dorch stage 2 HPFP, and E50 fuel. The Entire reason I bought the expensive Dorch Stage 2 HPFP was to run stage 2+ e30 tune, but my car does not like it... trying to figure out why.

My car Stats Below:

2015 M235i 6MT @ 37k Miles
N20 plugs gapped at 0.025
Dorch Stage 2 HPFP
FBO (VRSF Catless DP, Arm Motorsports Chargepipe, TIC Pipe and Intercooler, CTS Turbo Intake)
3.5 bar chargepipe TMAP

[n55david]

Originally Posted by motivman

can any log experts look at my log and verify what might be going on with my car? I get really good logs with stage 2 e30 tune, but with stage 2+, car does not feel good. I never get drivetrain malfunction in the regular stage 2+ e30 tune, but with the multimap stage 2+ tune, I get drivetrain malfunction when going WOT in 5th or 6th gear. the code is usually for boost pressure too high. I have changed my chargepipe tmap to 3.5 bar, but still does not make a difference. I have also smoke test on my car, but no boost leaks. I am unsure what the issue is at this point and need help figuring it out.

Stage 2+ log, car did not feel good AT ALL at the beginning of the WOT pull

https://www.bootmod3.net/log?id=60d7...729b405560ff7b

this one feels better, but still not perfect

https://www.bootmod3.net/log?id=60d7...729b405560ff7b

multimap stage 2+

https://www.bootmod3.net/log?id=60d7...729b405560ff4e

stage 2 E30 log, car feels good and fast!
https://www.bootmod3.net/log?id=60d7...729b3fd8cf0c59
https://www.bootmod3.net/log?id=60d7...0b430f294b471a
https://www.bootmod3.net/log?id=60d7...90c65d619cd176
https://www.bootmod3.net/log?id=60d7...0b430eaaa75de2

something about the stage 2+, my car does not like... but stage 2 e30, works just fine.

Car is 6MT, FBO, running Dorch stage 2 HPFP, and E50 fuel. The Entire reason I bought the expensive Dorch Stage 2 HPFP was to run stage 2+ e30 tune, but my car does not like it... trying to figure out why.

My car Stats Below:

2015 M235i 6MT @ 37k Miles
N20 plugs gapped at 0.025
Dorch Stage 2 HPFP
FBO (VRSF Catless DP, Arm Motorsports Chargepipe, TIC Pipe and Intercooler, CTS Turbo Intake)
3.5 bar chargepipe TMAP

man you get way better boost than I do

[motivman]

Originally Posted by Phantom10R

man you get way better boost than I do

I would gladly trade my "higher" boost for a better performing stage 2+ tune

[n55david]

Originally Posted by motivman

I would gladly trade my "higher" boost for a better performing stage 2+ tune

whats your plug gap at?

[motivman]

Originally Posted by Phantom10R

whats your plug gap at?

0.025, I have tried running at 0.022, but my issue and timings were worse with the smaller plug gap.

[thejeremyman9]

Are you on stock clutch? In the first log you linked above (https://www.bootmod3.net/log?id=60d7...0b430f294b44ae) it looks like your clutch is slipping badly at the start of the pull and the throttle closes three times as a result. Either that or you spun and DSC kicked in... Did you log in DSC off?

Later on in the pull you get another throttle closure at about 6300 rpm and tons of timing corrections as well. Not exactly clear why up there.

5th and 6th will put more load so its possible you also have clutch slip there if you are on stock clutch. Stock clutch barely holds stage 2 E30 so i doubt it can hold stage 2+

[motivman]

Yes, I am on stock clutch! I also do not "DARE" to log stage 2+ with DSC off, I almost spun 360 on the road one night when I tried logging stage 2 e30 with DSC off, so now I do all my logs in sports mode. I was suspecting clutch slipping was the issue, but Halim with PTF told me he didn't see evidence of that, and my car was running super rich and I needed more e85, which did not make sense to me, since in the beginning on the log, my stft is actually positive, meaning I was running lean, I also use E50 mix since I am on dorch stage 2 pump. So you think I need a clutch upgrade? like 550i clutch perhaps? iats are also super high in texas, so that is why I think stage 2+ has timing corrections. Also, do you have any idea why I get drivetrain malfunction (charge pressure too high) with the multimap stage 2+ tune when I try to go WOT in 5th or 6th gear? I contacted Halim about it, and he made a test map for me, which got rid of the DTM, but interested in finding out why I get it on the default map. I never get the code in the regular stage 2+ e30 tune either.

[thejeremyman9]

Originally Posted by motivman

Yes, I am on stock clutch! I also do not "DARE" to log stage 2+ with DSC off, I almost spun 360 on the road one night when I tried logging stage 2 e30 with DSC off, so now I do all my logs in sports mode. I was suspecting clutch slipping was the issue, but Halim with PTF told me he didn't see evidence of that, and my car was running super rich and I needed more e85, which did not make sense to me, since in the beginning on the log, my stft is actually positive, meaning I was running lean, I also use E50 mix since I am on dorch stage 2 pump. So you think I need a clutch upgrade? like 550i clutch perhaps? iats are also super high in texas, so that is why I think stage 2+ has timing corrections. Also, do you have any idea why I get drivetrain malfunction (charge pressure too high) with the multimap stage 2+ tune when I try to go WOT in 5th or 6th gear? I contacted Halim about it, and he made a test map for me, which got rid of the DTM, but interested in finding out why I get it on the default map. I never get the code in the regular stage 2+ e30 tune either.

You can clearly see in the log that RPM spikes up without any corresponding increase in vehicle speed... don't know how you can say that's anything but clutch slip. You can do some research in other threads but most people start slipping on stage 2 E30 with a worn clutch, and stage 2+ is even more torque. I would send him that log and ask if that's clutch slip... its a massive spike it should be pretty obvious.

E50 is the best fuel for this map based on what everyone was trying when it first came out, and yes it see the positive STFTs. Yes your IATs are also high and i think your IC is undersized for the stage 2+ map. Its not just the high starting IATs its the rise over a short pull. The timing corrections are very sudden and come with a throttle closure and boost gets pulled also so i dont think thats a direct result of IATs.

Red line is RPM, black is vehicle speed:

[motivman]

I guess its time to ditch the arm motorsports intercooler, and maybe upgrade to something like ER or Wagner. When I had ER in my 228i, my IATS were never this high, I traded in my 228i without taking out my ER intercooler, then cheaped out on the M235i with the arm motorsports parts, on my 228i, I had all ER and Wagner parts, SMH. What would you say will be the best clutch upgrade for the M235i? Also any clue what was causing the pressure too high DTM with the multimap stage 2+ tune, Halim changed something that made it go away, but he refuses to tell me what he changed after asking him multiple times. The Arm motorspots intercooler isn't doing too bad here with the e30 wot pull. Starts at 121F and ends at 125F. I guess maxing out the turbo with the stage 2+ tune is just putting out too much heat...

https://www.bootmod3.net/log?id=60da...729b2ae5584220

[thejeremyman9]

Originally Posted by motivman

I guess its time to ditch the arm motorsports intercooler, and maybe upgrade to something like ER or Wagner. When I had ER in my 228i, my IATS were never this high, I traded in my 228i without taking out my ER intercooler, then cheaped out on the M235i with the arm motorsports parts, on my 228i, I had all ER and Wagner parts, SMH. What would you say will be the best clutch upgrade for the M235i? Also any clue what was causing the pressure too high DTM with the multimap stage 2+ tune, Halim changed something that made it go away, but he refuses to tell me what he changed after asking him multiple times. The Arm motorspots intercooler isn't doing too bad here with the e30 wot pull. Starts at 121F and ends at 125F. I guess maxing out the turbo with the stage 2+ tune is just putting out too much heat...

https://www.bootmod3.net/log?id=60da...729b2ae5584220

I dont have specifically recommendations on a clutch just do some research and read one of the many threads on that.

With 20+ psi you should be looking at a race IC, especially when you are pushing stock turbo out of its efficiency zone, and live in an already hot climate.

I didnt see any logs in 5th/6th, i would need to see a log that caused the CEL to come up.

[5w20]

• upgrade clutch
• upgrade intercooler
• upgrade to a stickier compound tire
• shift earlier @ 6000-6200 (manuals have slightly more RPM drop)
  

[motivman]

Originally Posted by 5w20

• upgrade clutch
• upgrade intercooler
• upgrade to a stickier compound tire
• shift earlier @ 6000-6200 (manuals have slightly more RPM drop)
  

Will do. Do you have recommendations for the upgrades? As for tires, I am running Michelin Pilot Sport 4S 225/40/18 F and 255/35/18 R.

Do you think 335is/550i clutch kit will do? or should I get something along the lines of Spec 2+?

Spec 2+ Clutch
https://topgearsolutions.com/spec-2-...i-f30-f32-f22/

550i Clutch
https://www.fcpeuro.com/products/bmw...uk-21207603248

I also plan to upgrade to PS2 turbo towards the end of the summer and still runn the stage 2+ e30 tune for about 500Whp, so I need to upgrade to a clutch that can support the torque at this level.

[motivman]

Originally Posted by thejeremyman9

I dont have specifically recommendations on a clutch just do some research and read one of the many threads on that.

With 20+ psi you should be looking at a race IC, especially when you are pushing stock turbo out of its efficiency zone, and live in an already hot climate.

I didnt see any logs in 5th/6th, i would need to see a log that caused the CEL to come up.

I will log tomorrow and post it here. Thanks again for your help!

[5w20]

Originally Posted by motivman

Will do. Do you have recommendations for the upgrades? As for tires, I am running Michelin Pilot Sport 4S 225/40/18 F and 255/35/18 R.

Do you think 335is/550i clutch kit will do? or should I get something along the lines of Spec 2+?

Spec 2+ Clutch
https://topgearsolutions.com/spec-2-...i-f30-f32-f22/

550i Clutch
https://www.fcpeuro.com/products/bmw...uk-21207603248

I also plan to upgrade to PS2 turbo towards the end of the summer and still runn the stage 2+ e30 tune for about 500Whp, so I need to upgrade to a clutch that can support the torque at this level.

Honestly I have no clue on the clutches available since I have an auto.

I run the same tire PS4S but with a size of 265/30/20, and will hook on concrete basically anything above 40mph brake boosting, even when we get freezing or close to freezing temps down here. Maybe with the lighter weight of the 2 series makes it more difficult to hook and me having a taller overall diameter. Now asphalt is a different story, I do spin on that when going anything below 60mph when brake boosting. Wider tires don't necessarily provide bigger contact patch. The contact patch does get 'wider' but the contact does get more narrow front to back at the same time when increasing width. Anything like a Nitto NT555RII (gen 2), Toyo R888R, any Mickey Thompson ET street, or Hoosier DR will work even when you upgrade to the PS2.

[johnung]

Originally Posted by motivman

I guess its time to ditch the arm motorsports intercooler, and maybe upgrade to something like ER or Wagner. When I had ER in my 228i, my IATS were never this high, I traded in my 228i without taking out my ER intercooler, then cheaped out on the M235i with the arm motorsports parts, on my 228i, I had all ER and Wagner parts, SMH. What would you say will be the best clutch upgrade for the M235i? Also any clue what was causing the pressure too high DTM with the multimap stage 2+ tune, Halim changed something that made it go away, but he refuses to tell me what he changed after asking him multiple times. The Arm motorspots intercooler isn't doing too bad here with the e30 wot pull. Starts at 121F and ends at 125F. I guess maxing out the turbo with the stage 2+ tune is just putting out too much heat...

https://www.bootmod3.net/log?id=60da...729b2ae5584220

The big ER intercooler might be good for mostly tracking but I'd expect it to have more turbo lag on the street than the Wagner.

I'm about to install a Dorch2 also, so I'm curious how you make out with the BM3 Stage2+ E30 tune.

[motivman]

Originally Posted by johnung

The big ER intercooler might be good for mostly tracking but I'd expect it to have more turbo lag on the street than the Wagner.

I'm about to install a Dorch2 also, so I'm curious how you make out with the BM3 Stage2+ E30 tune.

Dorch Stage 2 HPFP is in my opinion, THE BEST upgrade I did to this car, good choice! I have ran as much as e70 on my car with stock lpfp, and no HPFP crash. I stick to E50 now though.

[motivman]

Originally Posted by 5w20

Honestly I have no clue on the clutches available since I have an auto.

I run the same tire PS4S but with a size of 265/30/20, and will hook on concrete basically anything above 40mph brake boosting, even when we get freezing or close to freezing temps down here. Maybe with the lighter weight of the 2 series makes it more difficult to hook and me having a taller overall diameter. Now asphalt is a different story, I do spin on that when going anything below 60mph when brake boosting. Wider tires don't necessarily provide bigger contact patch. The contact patch does get 'wider' but the contact does get more narrow front to back at the same time when increasing width. Anything like a Nitto NT555RII (gen 2), Toyo R888R, any Mickey Thompson ET street, or Hoosier DR will work even when you upgrade to the PS2.

one of the things I dislike about the M235i is the inability to run wide tires... I think the highest we can go with spacers and neg camber in the rear is 265... sometimes I wish I would have gone with the N55 M2 instead...but everything else about the m235i is great though.

[AsianBill]

Just throwing out there for the intercooler I recommend vrsf 6.5. Great intercooler and future proofs the build

[AmuroRay]

Another vote for the VRSF/Race type intercooler. A Wagner Evo 1/2 will not do well in your climate and for what you're trying to do.

ER is also a solid choice.

[n55david]

Originally Posted by AmuroRay

Another vote for the VRSF/Race type intercooler. A Wagner Evo 1/2 will not do well in your climate and for what you're trying to do.

ER is also a solid choice.

wish there was a legit comparison between vrsf and the mad intercoolers

[AmuroRay]

Originally Posted by Phantom10R

wish there was a legit comparison between vrsf and the mad intercoolers

The MAD 5" is terrible.

https://f87.bimmerpost.com/forums/sh...1796537&page=3

12 fin/inch

https://f87.bimmerpost.com/forums/sh...&postcount=809

20 iat increase during a pull (BM3 stage 1)

No idea how how the MAD Race version performs, but AsianBill has one the VRSF race, and his IAT's drop during pulls.

[n55david]

Originally Posted by AmuroRay

The MAD 5" is terrible.

https://f87.bimmerpost.com/forums/sh...537&page=3

12 fin/inch

https://f87.bimmerpost.com/forums/sh...;postcount=809

20 iat increase during a pull (BM3 stage 1)

No idea how how the MAD Race version performs, but AsianBill has one the VRSF race, and his IAT's drop during pulls.

good to know