Need advice on 525i mods
12-20-2009, 07:18 PM
#1
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I just bought a 2007 525i and am really disappointed with it's performance. My friend has a 530 and it feels like night and day. What can I do to make up the gap? Air intake? Chip? Any help would be appreciated.
12-20-2009, 08:31 PM
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Thanks guys. Exhaust seams a bit expensive. Can I expect good results from sprintbooster and intake? Will if feel like the 530? Will this effect my warranty and factory sensors?
THANKS!
THANKS!
12-20-2009, 10:56 PM
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My Ride: F13 M6
sprintbooster will not have any actual power gains, only increased throttle response. also in addition to an intake setup, we still have our special going on for the RPI exhaust for the 525/530 
and also, welcome and enjoy the forums.
and also, welcome and enjoy the forums.
12-21-2009, 08:43 PM
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How come nobody has mentioned the ECU flash upgrade? I heard that the air intake and exhaust will screw up the computer? This car is so slow compared to the 530 I can't stand it.
12-22-2009, 01:13 AM
#7
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Originally Posted by egzen75' post='1078015' date='Dec 22 2009, 08:43 AM
How come nobody has mentioned the ECU flash upgrade? I heard that the air intake and exhaust will screw up the computer? This car is so slow compared to the 530 I can't stand it.
the performance I think must hacve been effected its a straight exhaust I could see through the wholes before it got fitted I think its on par with RPi exhausts and costed me less then $200 with installation as far as I remember... if not less...
My friend has a 2008 530i with an Fox exhaust, 17" wheels vs. my 2008 525i Sport M-Racing and 18" M-type wheels
so we line 'em up on a straight road for a drag
Well I can tell you he won me a couple of times due to my mistake pressing the pedal bit later then him and I won him couple of times the engines are the same you know, I was thinking of chip tuning it but got talked out of it as I wouldnt notice any difference is what Ive been told by many. My computer didnt reflect ibn any way to an exhaust change so dont worry and it will not react to a chip tune. I just didnt chip it as Im a bit afraid how will it handle during winter when its like -15c now and sometimes it can drop even more.. you know what if the engine wont operate properly due to not reaching proper temperature due to chip tuning
[attachment=122547:CIMG3180.JPG]
[attachment=122548:CIMG3179.JPG]
[attachment=122549:CIMG3178.JPG]
[attachment=122550:CIMG3181.jpg]
12-22-2009, 01:36 AM
#8
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My Ride: 2007 530i. Purchased 6/28/07. Titanium Silver Metallic, Black Dakota Leather, Dark Poplar Trim, Steptronic, Premium Package, Cold Weather Package, Bluetooth, Adaptive Control Xenons. 10/30/07 Added OEM 124s with 245/40/18 & 275/35/18 Michelin Pilot Sport A/S tires. Installed red Cal Covers� from BavAuto. 11/21/07 Added OEM all-weather floor mats (for winter, carpet in summer) and coat rack. 6/26/08 installed M5-style rear spoiler. 6/30/08 put on red reflectors. 8/22/08 Euro turn signal stickers applied. 3/20/09 Installed Shadowline Trim. 3/27/09 Added Matte Black Kidney Grilles from Trinity. 4/03/09 Installed Bimmian Shadow Matte Black 530i Badges. 4/04/09 Installed LED license plate lights from Trinity. 5/01/09 Installed Brabus Interior LED Kit and White Angel Eyes. 5/02/09 Put in Brabus 6K Fogs. 5/14/09 Removed charcoal filter. 5/15/09 Installed light smoke LED side marker lamps from Trinity. 5/21/09 Sprint Booster. 6/12/09 Painted exhaust tips flat black. 6/13/09 Pulled red Cal Covers and painted calipers low gloss black. 6/27/09 RPI Ram Air Scoop from Trinity. 8/15/09 Installed Brabus's silver invisibulbs front and rear. 9/24/09 Installed R-Dash license plate LEDs from Brabaus (John).
Off-topic, but those Russian license plates look cool, Greenberg!
12-22-2009, 03:26 AM
#9
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Originally Posted by CWS530' post='1078121' date='Dec 22 2009, 01:36 PM
Off-topic, but those Russian license plates look cool, Greenberg!
but my next fiver... people will think I run an F10 523 
I dont like my cars badged up unless its 550 or ///M5
12-22-2009, 09:32 AM
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My Ride: Slvr 2005 BMW 530i with M- technic front bumper
Originally Posted by Greenberg' post='1078107' date='Dec 22 2009, 02:13 AM
I changed my exhaust to some Russian made exhaust with the name MG Racing that was not designed for any specific car but fitted just perfect and the sound I digg. It was a tight fit though but I love its looks
the performance I think must hacve been effected its a straight exhaust I could see through the wholes before it got fitted I think its on par with RPi exhausts and costed me less then $200 with installation as far as I remember... if not less...
My friend has a 2008 530i with an Fox exhaust, 17" wheels vs. my 2008 525i Sport M-Racing and 18" M-type wheels
so we line 'em up on a straight road for a drag
Well I can tell you he won me a couple of times due to my mistake pressing the pedal bit later then him and I won him couple of times the engines are the same you know, I was thinking of chip tuning it but got talked out of it as I wouldnt notice any difference is what Ive been told by many. My computer didnt reflect ibn any way to an exhaust change so dont worry and it will not react to a chip tune. I just didnt chip it as Im a bit afraid how will it handle during winter when its like -15c now and sometimes it can drop even more.. you know what if the engine wont operate properly due to not reaching proper temperature due to chip tuning
[attachment=122547:CIMG3180.JPG]
[attachment=122548:CIMG3179.JPG]
[attachment=122549:CIMG3178.JPG]
[attachment=122550:CIMG3181.jpg]
the performance I think must hacve been effected its a straight exhaust I could see through the wholes before it got fitted I think its on par with RPi exhausts and costed me less then $200 with installation as far as I remember... if not less...
My friend has a 2008 530i with an Fox exhaust, 17" wheels vs. my 2008 525i Sport M-Racing and 18" M-type wheels
so we line 'em up on a straight road for a drag
Well I can tell you he won me a couple of times due to my mistake pressing the pedal bit later then him and I won him couple of times the engines are the same you know, I was thinking of chip tuning it but got talked out of it as I wouldnt notice any difference is what Ive been told by many. My computer didnt reflect ibn any way to an exhaust change so dont worry and it will not react to a chip tune. I just didnt chip it as Im a bit afraid how will it handle during winter when its like -15c now and sometimes it can drop even more.. you know what if the engine wont operate properly due to not reaching proper temperature due to chip tuning
[attachment=122547:CIMG3180.JPG]
[attachment=122548:CIMG3179.JPG]
[attachment=122549:CIMG3178.JPG]
[attachment=122550:CIMG3181.jpg]