MHD N55 & WedgePerformance Testing

[Rob_BMW_PNW]

Boostconcepts?
chris@boostconcepts.net

I spoke with him about a month ago
He replies quick typically

[1traitor]

Originally Posted by WedgePerformance

Can you say rental car?

I have the same issue I have a 2013 135i and it's my daily and I wouldn't be able to send out the ecu so is there any chance that not having to bench flash it will be a available soon ?

[WedgePerformance]

Good news, error code 36C9 which puts the car into limp with no power or throttle input is all but gone thanks to MHD Tuning. Was able to disable the code and since, I haven't had one issue and I abused my car tonight testing a lower boost map for stock FMIC.

http://datazap.me/u/wedgeperformance...-24&zoom=14-94

[Newguy123]

Say WOT? Haha so is that a safe thing to do?

Originally Posted by WedgePerformance

Good news, error code 36C9 which puts the car into limp with no power or throttle input is all but gone thanks to MHD Tuning. Was able to disable the code and since, I haven't had one issue and I abused my car tonight testing a lower boost map for stock FMIC.

http://datazap.me/u/wedgeperformance...-24&zoom=14-94

[houtan]

Originally Posted by Newguy123

Say WOT? Haha so is that a safe thing to do?

Lol! I'm curious too. Did you guys figure out what actually causes it? Is it supposed to protect the motor and is it safe to disable?

[WedgePerformance]

Originally Posted by Newguy123

Say WOT? Haha so is that a safe thing to do?

Originally Posted by houtan

Lol! I'm curious too. Did you guys figure out what actually causes it? Is it supposed to protect the motor and is it safe to disable?

Until we figure out how to increase the fuel volume control, BMW has set a ceiling on how much fuel can flow which limits power.

36C9 - DME, internal fault: Plausibility monitoring of the relative fuel mass
Control Module Monitoring Fuel Volume Plausibility

The fault is recognized by the self-diagnosis. Potential problem source(s): - Rail-pressure sensor defective.

So, If you still have concerns about disabling the code, then live with it. I personally don't want to lose power in heavy traffic with my kids in the car just because I punch it to pass someone going 10 below the limit only to have no power and need to pull over to the side of the road to restart the car because there is no way to clear the code without ign cycle. Make sense now?

[houtan]

Originally Posted by WedgePerformance

Until we figure out how to increase the fuel volume control, BMW has set a ceiling on how much fuel can flow which limits power.

36C9 - DME, internal fault: Plausibility monitoring of the relative fuel mass
Control Module Monitoring Fuel Volume Plausibility

The fault is recognized by the self-diagnosis. Potential problem source(s): - Rail-pressure sensor defective.

So, If you still have concerns about disabling the code, then live with it. I personally don't want to lose power in heavy traffic with my kids in the car just because I punch it to pass someone going 10 below the limit only to have no power and need to pull over to the side of the road to restart the car because there is no way to clear the code without ign cycle. Make sense now?

I honestly lost count of the number of times that code has popped up, leaving me in a bad situation. Sometimes, downright dangerous situations, like being on a canyon road with no run off to pull over to restart the car.

Awesome you guys found an immediate solution. Based on your post it sounds like MHD is looking for the tables that will allow adjustment of the ceiling. Is that true?

[WedgePerformance]

Originally Posted by houtan

I honestly lost count of the number of times that code has popped up, leaving me in a bad situation. Sometimes, downright dangerous situations, like being on a canyon road with no run off to pull over to restart the car.

Awesome you guys found an immediate solution. Based on your post it sounds like MHD is looking for the tables that will allow adjustment of the ceiling. Is that true?

It's my understanding that Justin will be looking into this when he has time. I honestly could care less if we get a resolve above and beyond disable as it's a plausibility code. Not much different in my eyes as a lpfp plausibility code we have lived with for years. At least that one doesn't try to kill you while you're driving.

[houtan]

You get the ps2 installed?

[M335]

Ken, any updates on PS2 turbo tune?

[WedgePerformance]

Originally Posted by houtan

You get the ps2 installed?

Yes.. ;-)

Originally Posted by M335

Ken, any updates on PS2 turbo tune?

So far everything is going very well... Car spools quick, pull hard even at lower boost if feels amazing. Fueling is the biggest issue. N55 injectors do not like pressure drop. DCT is shifting super quick.

Steve from Fuel-IT is sending me an AIC and I'm headed out to AD Engineering for test fitment of their Port Rail and new 600 hp FMIC.

Once I get PI and FMIC installed, I'm turning up the boost and then hitting the dyno to do VANOS tuning. Hope we can squeeze 550+ out of this setup, but I would settle for 500 whp as long as it's smooth and driveable. I'll try to get some video soon. It sound absolutely amazing.

[Tricki]

Originally Posted by WedgePerformance

Yes.. ;-)

So far everything is going very well... Car spools quick, pull hard even at lower boost if feels amazing. Fueling is the biggest issue. N55 injectors do not like pressure drop. DCT is shifting super quick.

Steve from Fuel-IT is sending me an AIC and I'm headed out to AD Engineering for test fitment of their Port Rail and new 600 hp FMIC.

Once I get PI and FMIC installed, I'm turning up the boost and then hitting the dyno to do VANOS tuning. Hope we can squeeze 550+ out of this setup, but I would settle for 500 whp as long as it's smooth and driveable. I'll try to get some video soon. It sound absolutely amazing.

[IMG]http://i1198.photobucket.com/albums/...ps9ajnh574.jpg[/IMG]

[IMG]http://i1198.photobucket.com/albums/...pso0r0c2xa.jpg[/IMG]

Soo with pump gas what boost to redline does the car like without issues?

PeteA

[houtan]

Thanks for the update. You end up dropping the subframe?

As Tricki mentioned, are you going to complete a pump gas tune to see what she can do on pump only?

[WedgePerformance]

Originally Posted by Tricki

Soo with pump gas what boost to redline does the car like without issues?

PeteA

Below is a customer log. California 91 oct Pure Stage 2 with stock fuel system. Customer feedback is good. Car is super smooth and very responsive. Biggest issue is fuel quality. So to answer your question yes, the car pulls to redline without issues at the current boost level. There are some minor corrections I have made to increase onset boost a bit, but it's a work in progress.

http://datazap.me/u/drrobert/log-147...-26&zoom=15-86

Originally Posted by houtan

Thanks for the update. You end up dropping the subframe?

As Tricki mentioned, are you going to complete a pump gas tune to see what she can do on pump only?

Yes, subframe was removed and we finished up in about 6 hours. If we were more organized and didn't mess around, we could have done it quicker.

[CRYA]

Does the tune have any effect on an io2sim? Or vice-versa?

[houtan]

Originally Posted by WedgePerformance

Below is a customer log. California 91 oct Pure Stage 2 with stock fuel system. Customer feedback is good. Car is super smooth and very responsive. Biggest issue is fuel quality. So to answer your question yes, the car pulls to redline without issues at the current boost level. There are some minor corrections I have made to increase onset boost a bit, but it's a work in progress.

http://datazap.me/u/drrobert/log-147...-26&zoom=15-86



Yes, subframe was removed and we finished up in about 6 hours. If we were more organized and didn't mess around, we could have done it quicker.

Nice. That doesn't look bad at all on 91! Is that pretty much the max before the fueling system becomes a limitation or is that pretty much the max boost for acn91?

for the subframe do you drop and remove it completely? as in disconnect break lines, etc, or is it dropped a few inches to make space?

[M335]

Originally Posted by WedgePerformance

Below is a customer log. California 91 oct Pure Stage 2 with stock fuel system. Customer feedback is good. Car is super smooth and very responsive. Biggest issue is fuel quality. So to answer your question yes, the car pulls to redline without issues at the current boost level. There are some minor corrections I have made to increase onset boost a bit, but it's a work in progress.

http://datazap.me/u/drrobert/log-147...-26&zoom=15-86



Yes, subframe was removed and we finished up in about 6 hours. If we were more organized and didn't mess around, we could have done it quicker.

Ken, is there any chance we can see ps2 maxed out on e40-e60 with upgraded LPFP,fuel lines & small amount meth before you switch to port injection?

[BoosTonian]

Meth map? or will stage 2+ with a injection controller suffice in adding power?

[WedgePerformance]

Originally Posted by houtan

Nice. That doesn't look bad at all on 91! Is that pretty much the max before the fueling system becomes a limitation or is that pretty much the max boost for acn91?

for the subframe do you drop and remove it completely? as in disconnect break lines, etc, or is it dropped a few inches to make space?

Not max'd out, just seems to be a good mix for boost / timing for that fuel. As you know each car is a bit different. Any pressure drop on the rail is not good and causes the car to breakup if the power demand is too much for the fuel system. Definitely not as forgiving as the N54. but a good starting point for Pure Stage 2 on pump.

Sub removed completely. disconnect the control arms and sway links and pull it out leaving the rotors and suspension in place.

Originally Posted by CRYA

Does the tune have any effect on an io2sim? Or vice-versa?

For catless DP, we just disable the DP code so it doesn't throw a cell.

Originally Posted by M335

Ken, is there any chance we can see ps2 maxed out on e40-e60 with upgraded LPFP,fuel lines & small amount meth before you switch to port injection?

I have E30 with stage 2 LPFP from FUEL-IT and I'm pushing the limits now with 16 psi. I have a few more updates to do to smooth out boost as the stock wg base table doesn't work well with the PS2, but it doesn't take much to smooth it out. Again, every car will be a bit different so minor tweaks to smooth out the power.

Originally Posted by BoosTonian

Meth map? or will stage 2+ with a injection controller suffice in adding power?

Depends on if you're talking stock turbo or hybrid. Fueling will be the key to making good power. It's still early in the game so I'm not sure how the development of the OTS maps is looking today, I'm only focused on making the best custom maps available.

[Rob_BMW_PNW]

Ill be working with Ken locally on PS2 maps

[M335]

Originally Posted by WedgePerformance

Not max'd out, just seems to be a good mix for boost / timing for that fuel. As you know each car is a bit different. Any pressure drop on the rail is not good and causes the car to breakup if the power demand is too much for the fuel system. Definitely not as forgiving as the N54. but a good starting point for Pure Stage 2 on pump.

Sub removed completely. disconnect the control arms and sway links and pull it out leaving the rotors and suspension in place.



For catless DP, we just disable the DP code so it doesn't throw a cell.



I have E30 with stage 2 LPFP from FUEL-IT and I'm pushing the limits now with 16 psi. I have a few more updates to do to smooth out boost as the stock wg base table doesn't work well with the PS2, but it doesn't take much to smooth it out. Again, every car will be a bit different so minor tweaks to smooth out the power.



Depends on if you're talking stock turbo or hybrid. Fueling will be the key to making good power. It's still early in the game so I'm not sure how the development of the OTS maps is looking today, I'm only focused on making the best custom maps available.

So PS2 on the 91 octane log max boost was 15 psi & you saying with e30 & upgraded stage 2 lpfp you maxed out PS2 at 16 psi

[Newguy123]

Originally Posted by M335

So PS2 on the 91 octane log max boost was 15 psi & you saying with e30 & upgraded stage 2 lpfp you maxed out PS2 at 16 psi

Dct is finicky, I know a few that can run 20psi E30 PS2 on stock fuel system 6M/T. PS2 on 16 psi can make pretty good power at redline 420-440whp . My car on stock fuel system runs great e40 19psi mid range taper to 15.5 at redline. Anything more up top and it starts breaking up after shift etc. not surprised at all wedge is seeing similar results, the f series n55 cars can barely do 13-14psi at redline on the ps2 on stock fuel system IIRC