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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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Old 05-08-2009, 07:59 PM
Steve335cpe Steve335cpe is offline
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Location: Lincoln, Nebraska
 
Join Date: Dec 2007
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Mein Auto: 2007 335i Coupe
Curious? Anyone with fuel pump problems with Dinan upgrade?

I am curious if anyone who has reflashed their 335 ECU with Dinan II has had problems with fuel pumps.
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Old 05-08-2009, 11:29 PM
x986 x986 is offline
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Mein Auto: Late '07 335 Coupe
18K on car. 12-15 with Dinan II. (The original) No problems.
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Old 05-09-2009, 06:23 AM
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Duncan17 Duncan17 is offline
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Location: Athens Ga
 
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Mein Auto: 335i Dinan 3, Z4M Coupe
Had Dinan II for 8 months, upgraded to III, 7 months ago, not a single problem. Touch wood!
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Old 05-09-2009, 08:00 AM
02fireman 02fireman is offline
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Mein Auto: BMW
Nope.. Not yet....
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Old 05-09-2009, 09:46 AM
roadkillrob roadkillrob is online now
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Mein Auto: 325CIC, 335CIC
Search, I can't remember if it was on here or on E90post, but there have been a few people and I remember one in particular as he ended up getting a refund I think in the end from Dinan as BMW was blaming it on Dinan and Dinan was blaming on the fuel pump, which was the issue, but without the Dinan software the fuel pump ran fine and BMW would not replace it until it failed under normal conditions.

Probably a one off and likely his pump failed eventually anyway. With or without a tune it seems fuel pumps fail about the same - the tune may put a little stress on the pump, but I think it will fail in the end no matter what if it is going to go!
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Old 05-10-2009, 09:38 AM
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twowinns twowinns is offline
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Mein Auto: 2007 335ic, 2009 X5 3.0
No problems at all.
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