N54 DP Fix Issues. Need help.

jeddo45 · 08-24-2018, 08:37 PM

Can't get any answers on the subforum, posting here for some advice hopefully.

Just installed the VRSF DP fix on my 335i. Followed these instructions very carefully:

I have the dial at 5o'clock right now. Here is what MHD is showing:

Currently have stage 2+ flashed. Don't know how to diagnose this and quite frankly I'm a little nervous to even touch the dial as I don't want to fry anything.

Any help appreciated.

jeff_91121 · 08-25-2018, 05:46 PM

Did you have check engine light coming on after DP install? Are your O2 sensors installed? I don't understand the need for that "fix" if you are running MHD. MHD should automatically cheat the DME into not throwing a code that will cause the check engine light to come on. I am running MHD with downpipes, and using all the O2 sensors and I have had no check engine light come on.

jeddo45 · 08-25-2018, 05:50 PM

Quote:

Originally Posted by jeff_91121

Did you have check engine light coming on after DP install? Are your O2 sensors installed? I don't understand the need for that "fix" if you are running MHD. MHD should automatically cheat the DME into not throwing a code that will cause the check engine light to come on. I am running MHD with downpipes, and using all the O2 sensors and I have had no check engine light come on.

It's not for the code. It's for Smog. I live in California. Need the cats to show as ready in order to renew my registration. No CEL before or after.

Trying to figure out where to go next to show cats as ready.

BryGuy11 · 08-25-2018, 06:04 PM

I'm coming up on my inspection and am adding the fix when I get it, so keep us updated.

jeddo45 · 08-25-2018, 08:16 PM

I'll keep this updated as there is no where that shows the specifics of when it comes to turning the dial when you need to troubleshoot.

Firstly I have reached out to VRSF and will post their response back.

Research tells me that I could leave the current tune map on. For kicks, I tried flashing it back to stock, and that created waste gate rattle. Just got these turbos installed so I don't want to mess them up.

What I'm also trying to find out is if the INCOMPLETE status I'm seeing is there because it DOES recognize the cats but just the monitors aren't ready, or if it's because the DP fix isn't calibrated properly.

Cabdriver · 08-26-2018, 11:26 AM

You're gonna have to play with the dial unfortunately to get it dialed in. I ended up getting full readiness at either 7 or 8 oclock position and lots patience. Go from 5 to 6 then 6 to 7 and so on. If none of those work go to 4pm and work the opposite.

These things are not plug and play, requires some fiddling around. Also make sure you load stock tune, not map 0 but the factory tune.

jeddo45 · 08-26-2018, 02:45 PM

Quote:

Originally Posted by Cabdriver

You're gonna have to play with the dial unfortunately to get it dialed in. I ended up getting full readiness at either 7 or 8 oclock position and lots patience. Go from 5 to 6 then 6 to 7 and so on. If none of those work go to 4pm and work the opposite.

These things are not plug and play, requires some fiddling around. Also make sure you load stock tune, not map 0 but the factory tune.

I'll definitely flash it back to stock then. I was under the impression MHD map 0 didn't suppress the CEL DP light. Hopefully the created waste gate rattle doesn't cause longevity issues on my turbos.

Also, what are you using to see when the monitors are ready? I only have MHD and Carly Pro. Anything in there that will let me know when it's ready? What do you use?

jeddo45 · 08-26-2018, 07:10 PM

Doing my best to keep this updated.

Flashed completely back to stock. No check engine light from the catless dps, so I'm assuming that the DP fix is doing it's job. I still have the dial at 5 o'clock. MHD is still showing all of emissions related things as incomplete, so I'm not sure why I'm not getting a check engine light.

Does this mean the OBD monitors aren't ready, and the car needs to be driven or does this mean the DP fix isn't calibrated properly but it's still preventing the CEL from triggering.

I'm not sure if MHD is the best system to use for figuring out if the DP fix is working.

Antetokounmpo · 08-27-2018, 07:55 AM

Quote:

Originally Posted by Cabdriver

You're gonna have to play with the dial unfortunately to get it dialed in. I ended up getting full readiness at either 7 or 8 oclock position and lots patience. Go from 5 to 6 then 6 to 7 and so on. If none of those work go to 4pm and work the opposite.

These things are not plug and play, requires some fiddling around. Also make sure you load stock tune, not map 0 but the factory tune.

Quote:

Originally Posted by jeddo45

I'll definitely flash it back to stock then. I was under the impression MHD map 0 didn't suppress the CEL DP light. Hopefully the created waste gate rattle doesn't cause longevity issues on my turbos.

Also, what are you using to see when the monitors are ready? I only have MHD and Carly Pro. Anything in there that will let me know when it's ready? What do you use?

That's incorrect. Jeddo is right, Map 0 will not suppress the CEL. I've always flashed to map 0 and got readiness.

Cabdriver · 08-27-2018, 12:03 PM

Quote:

Originally Posted by jeddo45

I'll definitely flash it back to stock then. I was under the impression MHD map 0 didn't suppress the CEL DP light. Hopefully the created waste gate rattle doesn't cause longevity issues on my turbos.

Also, what are you using to see when the monitors are ready? I only have MHD and Carly Pro. Anything in there that will let me know when it's ready? What do you use?

Mhd is enough for readiness, it will show when you read the dme for codes. You will have to also perform the readiness drive cycle - easy to find with google search. Just have some patience and dont give up. Assuming all is well with the car, you'll get the readiness. If you search my posts, I walked another member on how to get this done and it is a pita but well worth it.

Vanosman · 01-08-2019, 07:12 PM

Quote:

Originally Posted by jeddo45

I'll definitely flash it back to stock then. I was under the impression MHD map 0 didn't suppress the CEL DP light. Hopefully the created waste gate rattle doesn't cause longevity issues on my turbos.

Also, what are you using to see when the monitors are ready? I only have MHD and Carly Pro. Anything in there that will let me know when it's ready? What do you use?

Vanosman · 01-08-2019, 07:18 PM

He has zero flutter now, 30min install, mostly routing and cutting vac lines to make it neat.
BMWFANATIC, he has Forge bov vent chargepipe kit, stock N54s, DCI, no downpipe yet.
JB4/MHD, stock inlets, ARM FMIC, e85.

Before Vader , had to drill 1/4" vac bung into manifold next to stock 1/8" plugged off. Most BOV fit 1/4", he zip tie to keep it from slipping, his forge has flange mount so it won't move ,most charge pipes no mount, he was also getting flutter backpressure when he ran forge dual diverters before Forge BOV kit less than $400, Forge is large like Tial and is quite compared to HKS and the other squeeze on bov that pop off & hit hood on first install on my YT vids they don't get good seal, i prefer the Tial and Forge clamp style.

jeddo45 · 01-08-2019, 07:19 PM

Quote:

Originally Posted by Vanosman

BMWFANATIC, he has Forge bov vent chargepipe kit, stock N54s, DCI, no downpipe yet.
JB4/MHD, stock inlets, ARM FMIC, e85.

Before Vader , had to drill 1/4" vac bung into manifold next to stock 1/8" plugged off. Most BOV fit 1/4", he zip tie to keep it from slipping, his forge has flange mount so it won't move ,most charge pipes no mount, he was also getting flutter backpressure when he ran forge dual diverters before Forge BOV kit less than $400

My dude I think you got the wrong thread lol.

Vanosman · 01-08-2019, 07:32 PM

I'm not liking the idea of catless odors in e93is. Just have to settle for high flow.

I have Dinan stage 2, no JB4 no MHD, would have to do this headache flash piggy and screw with dial and suck fumes in slow traffic with top down, high flow sounds like no headaches vs +$300 for Ebay catless w/ flash fix.

High flow cats cost 250% more

N54Society · 01-09-2019, 02:50 PM

If you're in CA, you will not pass without that catalyst being 'complete'. Also, there is a very specific procedure that needs to be followed (ie. drive under 60mph for about 15 minutes) before catalyst becomes 'complete'.

Read my thread:

https://www.e90post.com/forums/showthread.php?t=1219894

EDIT: Didn't notice that this thread was bumped by basically an ad.

08-24-2018, 08:37 PM	#1
jeddo45 Apprentice 373 Rep 801 Posts Drives: 2007 BMW 335i Join Date: Jul 2016 Location: LBC iTrader: (0)	N54 DP Fix Issues. Need help. Can't get any answers on the subforum, posting here for some advice hopefully. Just installed the VRSF DP fix on my 335i. Followed these instructions very carefully: I have the dial at 5o'clock right now. Here is what MHD is showing: Currently have stage 2+ flashed. Don't know how to diagnose this and quite frankly I'm a little nervous to even touch the dial as I don't want to fry anything. Any help appreciated.
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08-25-2018, 05:46 PM	#2
jeff_91121 New Member 3 Rep 12 Posts Drives: 2009 335i Sedan Auto Join Date: Apr 2017 Location: Myrtle Beach iTrader: (0)	Did you have check engine light coming on after DP install? Are your O2 sensors installed? I don't understand the need for that "fix" if you are running MHD. MHD should automatically cheat the DME into not throwing a code that will cause the check engine light to come on. I am running MHD with downpipes, and using all the O2 sensors and I have had no check engine light come on.
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08-25-2018, 06:04 PM	#4
BryGuy11 Banned 43 Rep 104 Posts Drives: 07 BMW 335i coupe 6sp Join Date: Aug 2018 Location: Shithole NH iTrader: (0)	I'm coming up on my inspection and am adding the fix when I get it, so keep us updated.
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08-25-2018, 08:16 PM	#5
jeddo45 Apprentice 373 Rep 801 Posts Drives: 2007 BMW 335i Join Date: Jul 2016 Location: LBC iTrader: (0)	I'll keep this updated as there is no where that shows the specifics of when it comes to turning the dial when you need to troubleshoot. Firstly I have reached out to VRSF and will post their response back. Research tells me that I could leave the current tune map on. For kicks, I tried flashing it back to stock, and that created waste gate rattle. Just got these turbos installed so I don't want to mess them up. What I'm also trying to find out is if the INCOMPLETE status I'm seeing is there because it DOES recognize the cats but just the monitors aren't ready, or if it's because the DP fix isn't calibrated properly.
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08-26-2018, 11:26 AM	#6
Cabdriver Private First Class 52 Rep 164 Posts Drives: 2009 E90 335i Join Date: Jun 2016 Location: NJ iTrader: (0)	You're gonna have to play with the dial unfortunately to get it dialed in. I ended up getting full readiness at either 7 or 8 oclock position and lots patience. Go from 5 to 6 then 6 to 7 and so on. If none of those work go to 4pm and work the opposite. These things are not plug and play, requires some fiddling around. Also make sure you load stock tune, not map 0 but the factory tune.
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08-26-2018, 07:10 PM	#8
jeddo45 Apprentice 373 Rep 801 Posts Drives: 2007 BMW 335i Join Date: Jul 2016 Location: LBC iTrader: (0)	Doing my best to keep this updated. Flashed completely back to stock. No check engine light from the catless dps, so I'm assuming that the DP fix is doing it's job. I still have the dial at 5 o'clock. MHD is still showing all of emissions related things as incomplete, so I'm not sure why I'm not getting a check engine light. Does this mean the OBD monitors aren't ready, and the car needs to be driven or does this mean the DP fix isn't calibrated properly but it's still preventing the CEL from triggering. I'm not sure if MHD is the best system to use for figuring out if the DP fix is working.
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01-08-2019, 07:18 PM	#12
Vanosman Enlisted Member 1 Rep 38 Posts Drives: 2013 e93/2014 F10/2004 M3 Conv Join Date: Apr 2009 Location: Oklahoma iTrader: (0)	He has zero flutter now, 30min install, mostly routing and cutting vac lines to make it neat. BMWFANATIC, he has Forge bov vent chargepipe kit, stock N54s, DCI, no downpipe yet. JB4/MHD, stock inlets, ARM FMIC, e85. Before Vader , had to drill 1/4" vac bung into manifold next to stock 1/8" plugged off. Most BOV fit 1/4", he zip tie to keep it from slipping, his forge has flange mount so it won't move ,most charge pipes no mount, he was also getting flutter backpressure when he ran forge dual diverters before Forge BOV kit less than $400, Forge is large like Tial and is quite compared to HKS and the other squeeze on bov that pop off & hit hood on first install on my YT vids they don't get good seal, i prefer the Tial and Forge clamp style. Last edited by Vanosman; 01-08-2019 at 07:23 PM..
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01-08-2019, 07:32 PM	#14
Vanosman Enlisted Member 1 Rep 38 Posts Drives: 2013 e93/2014 F10/2004 M3 Conv Join Date: Apr 2009 Location: Oklahoma iTrader: (0)	I'm not liking the idea of catless odors in e93is. Just have to settle for high flow. I have Dinan stage 2, no JB4 no MHD, would have to do this headache flash piggy and screw with dial and suck fumes in slow traffic with top down, high flow sounds like no headaches vs +$300 for Ebay catless w/ flash fix. High flow cats cost 250% more
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01-09-2019, 02:50 PM	#15
N54Society Major Private First Class 450 Rep 1,327 Posts Drives: 2010 E90 335i M Sport Join Date: Mar 2014 Location: US, NA, Earth, Milky Way Galaxy iTrader: (2)	If you're in CA, you will not pass without that catalyst being 'complete'. Also, there is a very specific procedure that needs to be followed (ie. drive under 60mph for about 15 minutes) before catalyst becomes 'complete'. Read my thread: https://www.e90post.com/forums/showthread.php?t=1219894 EDIT: Didn't notice that this thread was bumped by basically an ad. __________________ 2008 E92 335i 6MT: FBO + MMP Silicone Inlets \| Stage 1 LPFP \| 335is clutch + MFactory SMFW \| Custom BuraQ + MHD tune \| 3.5Bar N20 sensor [SOLD] 2010 E90 335i M-Sport AT: 5" Stepped FMIC, Stage 2 LPFP - MHD V7 E60 Tune running 100% E85 - VRSF DPs Last edited by N54Society; 01-09-2019 at 07:42 PM..
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