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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > N55 DPFIX!!



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      09-10-2012, 10:00 PM   #23
ParkNuts
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Mike, does this play with air/fuel ratios very much? I've read some N54 guys have needed to remove theirs because over time their afr gets out of sync.
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      09-12-2012, 09:09 AM   #24
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Originally Posted by ryansungasong View Post
Has the cold start rough idle been confirmed to be resolved with this DP fix? That was be awesome if it has.
+1

Has anyone purchased this DP Fix yet and can comment on how well it works?
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      09-13-2012, 12:16 PM   #25
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get those over to us in NY!
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      09-13-2012, 07:29 PM   #26
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Hey guys, I'm a little confused. What does this DP fix exactly do other than keep the DME happy so I don't get a code cuz of the catless dp? Will it change my fuel ratios to keep the car running normal?
On the BMS website it says you don't need this is you have a JB4. Well I have a JB4, but I keep it on map 0 most of the time. So I think buying the DP Fix would be good in my case?
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      09-24-2012, 12:53 PM   #27
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Hey guys,

Some bad news on this project. The downpipe fix logic implemented is working well for the N20 motor and it was expected to also work for the N55, since they use the same O2 sensors and connectors, but during testing that has proven not to be the case. The design is not compatible with the N55 DME. So a new product will need to be redesigned for the N55 downpipe fix. Unfortunately BMS does not have an ETA for doing this so as of now this project is on ice. Sorry for getting everyone's hopes up.

Mike
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NEW PERFORMANCE LINE N54 DOWNPIPES & M3/M4 & F30 ER DOWNPIPES NOW IN STOCK - ER N54 CHARPE PIPE SPECIALS - NEW JB4 G5 ISO for N54 and F30 N55 ON SALE - NEW S55 M3/M4 JB4 NOW SHIPPING
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      09-24-2012, 01:26 PM   #28
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      09-24-2012, 01:39 PM   #29
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now that is blue balls if you've never had any...
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      09-24-2012, 02:07 PM   #30
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      09-24-2012, 03:14 PM   #31
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      09-24-2012, 09:31 PM   #32
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boooo
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      09-24-2012, 09:37 PM   #33
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      09-24-2012, 10:15 PM   #34
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      09-25-2012, 12:09 AM   #35
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      09-25-2012, 07:29 PM   #36
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Ugh...my inspection has been up for a month now..guess I better put the stock DPs on when I get my trunk meth installed.. fml
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      09-26-2012, 02:18 AM   #37
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      09-26-2012, 07:06 AM   #38
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Price drop on the BMS N55 downpipe?!?
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      09-26-2012, 07:35 AM   #39
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      09-26-2012, 12:26 PM   #40
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      09-29-2012, 06:02 AM   #41
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downpipe fix

My downpipe fix still working.....lol.... The one that Mike said it wouldn't work!

Last edited by sti959; 09-29-2012 at 06:15 AM.
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      09-29-2012, 10:47 AM   #42
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Do you have a DIY
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      09-29-2012, 10:59 AM   #43
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Quote:
Originally Posted by sti959 View Post
My downpipe fix still working.....lol.... The one that Mike said it wouldn't work!
So guys... You know were to buy your dp fix

FREE BUMP
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      09-29-2012, 11:11 AM   #44
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So guys... You know were to buy your dp fix

FREE BUMP
Is STI959 selling it?
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