|
|
SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS! |
View Poll Results: What feeds your M? | |||
RPI scoop and BMC filter | 9 | 32.14% | |
RPI scoop and stock filter | 8 | 28.57% | |
RPI scoop and something else (AFE, etc.) | 11 | 39.29% | |
Voters: 28. You may not vote on this poll |
Post Reply |
|
Thread Tools | Search this Thread |
02-17-2009, 10:01 PM | #1 |
Brigadier General
379
Rep 4,320
Posts
Drives: '07 Z4 M Coupe
Join Date: May 2006
Location: Metro-Detroit
|
What's your RPI scoop setup?
Like the title says, what's the setup you're running on your M?
About to place an order and wondering if the BMC filter is worth the additional $80, and is an improvement over the stock filter. I know the BMC one has to be cleaned/re-oiled every 10k miles or so. How many times can you do this with the $19 kit from BMC?
__________________
|
02-17-2009, 10:17 PM | #2 |
Major General
684
Rep 5,069
Posts
Drives: BMW 230i Msport w/LSD
Join Date: Nov 2007
Location: Astral Projecting: ∞ 23.516 -122 02.625 0242.101 ĕv'rē-hwâr'
iTrader: (16)
Garage List 2009 Porsche 911 997.2 [10.00]
2019 Hyundai N (Sold) [10.00] 2013 BMW M3 (Sold) [10.00] 2011 1M Coupe (Sold) [8.78] 2008 E90 M3 (Sold) [8.60] 2007 Z4 Mcpe (Sold) [9.50] 2005 BMW M3 (Sold) [10.00] |
Just stock filter with the RPI scoop.
__________________
|
Appreciate
0
|
02-17-2009, 10:41 PM | #4 |
Captain
64
Rep 666
Posts
Drives: 2023 Hyundai IONIQ 6 SEL AWD
Join Date: Aug 2007
Location: Seattle, WA
|
Save another $140
RPI intake scoop and OE paper filter.
Why not save another $140 and simply remove the OE intake deflector.
__________________
Jim Millet
2023 Hyundai IONIQ 6 SEL AWD Ultimate Red SOLD: 2007 BMW Z4 M Coupe Imola Red |
Appreciate
0
|
02-18-2009, 01:44 PM | #9 |
Captain
64
Rep 666
Posts
Drives: 2023 Hyundai IONIQ 6 SEL AWD
Join Date: Aug 2007
Location: Seattle, WA
|
PM
__________________
Jim Millet
2023 Hyundai IONIQ 6 SEL AWD Ultimate Red SOLD: 2007 BMW Z4 M Coupe Imola Red |
Appreciate
0
|
02-18-2009, 02:41 PM | #10 |
My favorite sign.
169
Rep 4,333
Posts |
I don't have an RPI scoop
__________________
|
Appreciate
0
|
02-18-2009, 03:52 PM | #11 |
Mars Bitches... Red Rocks !
15
Rep 344
Posts
Drives: '07 Z4 M Coupe
Join Date: Nov 2008
Location: Trapped in a glass case of emotion !
|
|
Appreciate
0
|
02-18-2009, 09:35 PM | #13 |
Hooligan
55
Rep 680
Posts |
??
What is the gruppe M? How is it any different from the aFe intake? I read somewhere that, other than the scoop, the cold air intakes are essentially worthless in terms of hp gains. Also, what is this elbow thing? Can anyone comment on the this as well as the sound of the cold air intake on our cars?
|
Appreciate
0
|
02-18-2009, 10:03 PM | #14 | |
Brigadier General
379
Rep 4,320
Posts
Drives: '07 Z4 M Coupe
Join Date: May 2006
Location: Metro-Detroit
|
Quote:
This post shows the streamline elbow vs. the OEM one. Still waiting for someone else to test this out.
__________________
|
|
Appreciate
0
|
02-19-2009, 11:52 AM | #15 |
Brigadier General
379
Rep 4,320
Posts
Drives: '07 Z4 M Coupe
Join Date: May 2006
Location: Metro-Detroit
|
So I guess the important question that I should have originally included is:
Does the filter actually make a difference? If there is a noticeable benefit to replacing the stock filter I'm more inclined to do it.
__________________
|
Appreciate
0
|
02-19-2009, 05:46 PM | #16 | |
Captain
64
Rep 666
Posts
Drives: 2023 Hyundai IONIQ 6 SEL AWD
Join Date: Aug 2007
Location: Seattle, WA
|
Lighter wallet = faster car
Quote:
Your wallet will weight less so the car may feel marginally faster
__________________
Jim Millet
2023 Hyundai IONIQ 6 SEL AWD Ultimate Red SOLD: 2007 BMW Z4 M Coupe Imola Red |
|
Appreciate
0
|
02-19-2009, 07:15 PM | #17 | |
Mars Bitches... Red Rocks !
15
Rep 344
Posts
Drives: '07 Z4 M Coupe
Join Date: Nov 2008
Location: Trapped in a glass case of emotion !
|
Quote:
I didn't really notice a difference... not that U would with 5HP. So I put the charcoal one back. The whole thinking behind the silicone elbow is that it's SUPPOSED to steam line the airflow around the corner ( inside of it is smooth ), as the OEM elbow has ribs in it that disturb the airflow around the corner. Sounds like a good way to get $90 out of your pocket to me. In theory it makes sense, sounds like a good idea, but seriously, what difference do you REALLY think it's gonna make ? |
|
Appreciate
0
|
02-19-2009, 07:38 PM | #18 |
Captain
53
Rep 689
Posts |
I have the RPI and have played with a few configurations. Here are a couple random thoughts:
1. Not sure if the RPI scoop minus software actually makes a difference but it might at the top end and at hwy speed. 2. I tried RPI with stock filter and charcoal filter...no difference over stock I could tell. I bought my scoop used so I had to order my BMC from Europe and did the stock filter+charcoal filter combo with my scoop for a few weeks. 3. I put in my BMC and removed my charcoal filter/stock paper filter. Not sure if it is faster but the revs seem to rise and fall much quicker. It seems like the car revs faster...not sure if this is added power but I have switched back to stock paper filter/charcoal filter and it seemed to rev less freely. I make no claims other than this is what I percieved. 4. I am getting ESS software and do believe my intake/exhaust modifications plus software will get the best result with noticeable gains. I get my software tomorrow and am happy to share my results 5. In summary, it is a fairly cheap mod that makes the car rev quicker with stock software. Does it make more power, not sure but it seems like a little more power up top and at hwy speed. My opinion only.
__________________
2007 M Coupe w/NAV/Premium/Extended Leather, Clearbra, DICE, 4.10 BMW Motorsport Polished LSD, Active Autowerke Gen IV Headers, Supersprint Race Exhaust and X-Pipe, ESS Tuned DME, KWV3 Coilovers, Volk RE30, OEM Strut Tower Brace, Short Antenna, JL AMP, JL 10W7, Valentine V1.
Last edited by Burt Reynolds; 02-19-2009 at 07:58 PM.. |
Appreciate
0
|
02-20-2009, 12:09 AM | #19 | ||
Brigadier General
379
Rep 4,320
Posts
Drives: '07 Z4 M Coupe
Join Date: May 2006
Location: Metro-Detroit
|
Quote:
Quote:
If permanently, how come? We had a meet tonight, and I was talking with Todd (at ESS) - gonna head by his place this weekend to have the tune done.
__________________
Last edited by nmulax; 02-20-2009 at 12:50 AM.. |
||
Appreciate
0
|
02-20-2009, 08:05 AM | #20 |
Captain
53
Rep 689
Posts |
I put the stock filter/charcoal back in for comparison (not permanantly) and drove that way for another week. The car now has the BMC filter back in and I plan to keep it that way.
__________________
2007 M Coupe w/NAV/Premium/Extended Leather, Clearbra, DICE, 4.10 BMW Motorsport Polished LSD, Active Autowerke Gen IV Headers, Supersprint Race Exhaust and X-Pipe, ESS Tuned DME, KWV3 Coilovers, Volk RE30, OEM Strut Tower Brace, Short Antenna, JL AMP, JL 10W7, Valentine V1.
|
Appreciate
0
|
02-21-2009, 08:06 AM | #22 | |
Major
366
Rep 1,373
Posts |
Quote:
http://m3forum.net/m3forum/showthread.php?t=184378
__________________
07 Z4 M Coupe AW/IR |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|