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Seeking horsepower gains on a 545i

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Old 03-13-2006, 10:27 AM
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Originally Posted by swajames' post='254275' date='Mar 13 2006, 02:11 PM
From looking at Dinan's website I thought that was only with the E39 M5? Their remap did make some changes (torque etc), just no specific gain on HP.
I had an E39 530 and looked into Dinan mods. Without doing anything else, Dinan literature said the remap would result in only 1 - 2 HP gain, but would result in higher shift pionts, quicker acceleration, etc.
Old 05-19-2006, 07:32 PM
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Hey Alex,

About a month ago I had all the Dinan performance upgrades added to my 2005 545i. It added approximately 27+/- hp. I noticed a significant difference in sound as well as performance. The note the exhaust gives is deep and throaty. I would recomend Dinan to any one who is looking for true performance gains.

Originally Posted by AlexFW' post='251671' date='Mar 8 2006, 01:53 PM
Like many of you, I own a 545i. I have to say I'm fairly happy with the car, but I wouldn't mind having a few extra horsepower. What would you recommend to obtain a net gain of at least 30hp? Any experiences and recommendations will be welcome.
Regards,
Alex

Old 05-20-2006, 10:22 AM
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Originally Posted by swajames' post='254202' date='Mar 13 2006, 11:37 AM
Anyone with any doubt about the legitimacy of these guys (DMS) need only read this thread.

http://forums.e60.net/index.php?s=&showtop...ndpost&p=254196
Uh, that's on a turbo car - no? Remapping a turbo car (aka increasing the boost) can do wonders. It won't help a NA car much however.
Old 05-20-2006, 12:43 PM
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I already had the sport muffler and just added the Dinan high flow cold air intake. I have kicked it in the butt a few times and WOW! Yes, you can feel it. I'm thinking I am at 347 hp now.
Old 05-20-2006, 12:45 PM
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Originally Posted by CHASE545IDINAN' post='285082' date='May 19 2006, 10:32 PM
Hey Alex,

About a month ago I had all the Dinan performance upgrades added to my 2005 545i. It added approximately 27+/- hp. I noticed a significant difference in sound as well as performance. The note the exhaust gives is deep and throaty. I would recomend Dinan to any one who is looking for true performance gains.
Chase, did you add the lightened flywheel? I have been tempted, but heard some negative.
Old 05-20-2006, 01:45 PM
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Originally Posted by doug_999' post='285344' date='May 20 2006, 11:22 AM
Uh, that's on a turbo car - no? Remapping a turbo car (aka increasing the boost) can do wonders. It won't help a NA car much however.
There were doubts about DMS, hence the link.... And you're off the mark on the NA point, something even the most cursory of research (reading this very thread, for example) would have shown you . DMS are legitimate, their stated gains are going to be legitimate (and as the table above shows, some other tuners claim more).
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