Three Stage Intake Manifold Conversion for 525i - 50+HP Gain!
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Joined: Apr 2010
Posts: 772
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From: Toronto, Canada
My Ride: 2007 Black Sapphire 535i
If I were you, I would try junkyards, etc and get the 3 stage manifold used - the same manifold is on x5 3.0si, 330, 530 so it's not that hard to find. It's a plastic piece. You will save quite a bit of money this way. I got mine from bmrparts.com but I would not recommend them. They sent a single stage manifold and then it took them several months to send the right part.
Unfortunately my ship has sailed. All parts are on order with Tischer (Getbmwparts.com) and I'm now just eagerly waiting to receive everything. I did some searching on eBay for the manifold and did find a few of the one-stage OEMs, but nothing in a three-stage. I'm sure if I kept looking something would turn up. For reference, here is a list of all the BMWs, this manifold associates with according to realoem.com.
E60 530i Sedan
E60 530xi Sedan
E61 530xi Touring
E70 X5 3.0si SUV
E82 128i Coupe
E83N X3 3.0si SUV
E85 Z4 3.0si Roadster
E86 Z4 3.0si Coupe
E88 128i Convertible
E89 Z4 30i Roadster
E90 328i Sedan
E90 328xi Sedan
E90 330i Sedan
E90 330xi Sedan
E90N 328i Sedan
E90N 328xi Sedan
E92 328i Coupe
E92 328xi Coupe
E92N 328i Coupe
E92N 328xi Coupe
E93 328i Convertible
E93N 328i Convertible
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Joined: Apr 2010
Posts: 772
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From: Toronto, Canada
My Ride: 2007 Black Sapphire 535i
In an effort to squeeze every last HP I can out of the car, I've decided also to add an exhaust system to the mix. The three choices were the REMUS RM Dual Tip, Eisenmann Performance Exhaust or Race Precision. Given my past experiences with Michael at Acute Performance and some of the sound clips I've been listening to on Youtube (not to mention the claims of Dyno testing yielding a 10whp gain and over 20wtq over the stock exhaust), I think the RPI GT Axleback Exhaust will be my choice. I already have the RPi Ram Air Induction Kit installed and BMI Filter with charcoal filter out.
Here's a sound clip, (whiles it definitely no M5 or the likes, it does sound a lot better than stock).
Here's a sound clip, (whiles it definitely no M5 or the likes, it does sound a lot better than stock).
Thread Starter
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Joined: Apr 2010
Posts: 772
Likes: 2
From: Toronto, Canada
My Ride: 2007 Black Sapphire 535i
Look what UPS dropped off yesterday! My parts are here form Tischer. Time to call Bimmersport to set up an appointment for the install and tune. Damn, this is gonna be a reality soon guys!
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Joined: May 2009
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Thread Starter
Contributors
Joined: Apr 2010
Posts: 772
Likes: 2
From: Toronto, Canada
My Ride: 2007 Black Sapphire 535i
Awesome. I think I am more excited than you!
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Joined: Sep 2006
Posts: 3,238
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From: Omaha, NE - USA
My Ride: MY07 525xi Silver Gray
Model Year: 2007
Georgieb,
You may want to consider Dinan High Flow Throttle Body too ... I'm using it right now as you mentioned every bit will add up ...
Very easy to install, here's my post 'bout it from couple yrs ago http://forums.5serie...post__p__968432 ... it may complement your 3-stage intake mod.
You may want to consider Dinan High Flow Throttle Body too ... I'm using it right now as you mentioned every bit will add up ...
Very easy to install, here's my post 'bout it from couple yrs ago http://forums.5serie...post__p__968432 ... it may complement your 3-stage intake mod.
In an effort to squeeze every last HP I can out of the car, I've decided also to add an exhaust system to the mix. The three choices were the REMUS RM Dual Tip, Eisenmann Performance Exhaust or Race Precision. Given my past experiences with Michael at Acute Performance and some of the sound clips I've been listening to on Youtube (not to mention the claims of Dyno testing yielding a 10whp gain and over 20wtq over the stock exhaust), I think the RPI GT Axleback Exhaust will be my choice. I already have the RPi Ram Air Induction Kit installed and BMI Filter with charcoal filter out.
Here's a sound clip, (whiles it definitely no M5 or the likes, it does sound a lot better than stock).
[VIDEO CLIP]
Here's a sound clip, (whiles it definitely no M5 or the likes, it does sound a lot better than stock).
[VIDEO CLIP]
Thread Starter
Contributors
Joined: Apr 2010
Posts: 772
Likes: 2
From: Toronto, Canada
My Ride: 2007 Black Sapphire 535i
You may want to consider Dinan High Flow Throttle Body too ... I'm using it right now as you mentioned every bit will add up ...
Very easy to install, here's my post 'bout it from couple yrs ago http://forums.5serie...post__p__968432 ... it may complement your 3-stage intake mod.
Very easy to install, here's my post 'bout it from couple yrs ago http://forums.5serie...post__p__968432 ... it may complement your 3-stage intake mod.
I'll check this out also...
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Joined: Apr 2010
Posts: 772
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From: Toronto, Canada
My Ride: 2007 Black Sapphire 535i
BlaSTiWi,
Speaking of squeezing every horsepower you can out of the car, have you every considered swapping the ignition coil set? Check this out:
https://5series.net/forums/topic/113...1#entry1339307
http://www.bavauto.com/shop.asp
Speaking of squeezing every horsepower you can out of the car, have you every considered swapping the ignition coil set? Check this out:
https://5series.net/forums/topic/113...1#entry1339307
http://www.bavauto.com/shop.asp
