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03-04-2012, 10:26 AM | #23 | |
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03-04-2012, 11:15 AM | #24 |
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I don't have any doubt about the pulley making power. My butt dyno revealed that. The drop in filter, I am not so sure about, although it adds a little induction noise.
Could you test the filter first, since that is the more questionable power adder. |
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03-04-2012, 11:29 AM | #25 |
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For the sake of science, and the good of the community. You should baseline your runs with an OEM filter, after that you could test the Green if you want as well, to see the change from your own previous setup. That way you'll have a OEM vs MS2, and also some other number comparing a regular drop-in vs an intake that changes other hardware. It would still be valuable information as many people have drop-ins, wonder if going MS2 is worth the upgrade.
But comparing a drop in to the MS2 intake is not what the vendor is doing, and would make any implied foul play on numbers or straight comparisons invalid. |
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03-04-2012, 12:19 PM | #26 | |
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well i don't think you're accusing anyone of foul play. i guess i'm just curious what you're hoping to measure, if its not the exact same thing already measured by EAS. the only thing I can see as offering something different, would be a before and after dyno of the intake on a bone-stock car - which mine was not (and it appears yours is also not).
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03-04-2012, 01:39 PM | #27 | |
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03-04-2012, 06:56 PM | #28 |
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03-05-2012, 07:18 AM | #30 | |
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The vendors still claim a gain in power from the air filter to the full stage 2 intake. This has been stated in many threads. This test will prove that one way or the other. Thanks guys. Still looking for a BT cable in Houston.....
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03-07-2012, 06:38 AM | #32 | |
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I doubt the intake will make power, either, since so many posts about intakes and pulleys fail to show before and after dyno pulls. On the otherhand, if the MS Stage 2 intake makes power based on KennyPowers' dyno tests I'll be buying one! |
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03-07-2012, 07:15 AM | #33 | |
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either way, the intake sounds cool so im good to go there and the price was super cheap. i still dont have a BT tool, so if i dont have this by this weekend we may have to make due with before and after dynos alone and DRF files. I will make sure that the car is equally cooled down during each set of runs and will administer 2 minute wait times between dyno runs. daniel, do you happen to have a copy of those dyno results?
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03-07-2012, 07:16 AM | #34 |
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THE PARTS are on the way, and scheduled to arrive Friday. I am hopeful that I can get this done on Saturday, but we will have to see. It may slide to next week. I will update this today.
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03-07-2012, 08:05 AM | #35 |
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Yes - all dynos were from a Dyno Jet at Driver Source. I'll dig these up and send the links.
Here's a summary of my dyno results:
The Fabspeed xpipe and tune gave me a ~27 whp bump. Adding other aftermarket parts (i.e., exhaust, pulley, and filter) provided 0 whp benefit. I'm now running the full Akra exhaust with ESS tune and I'll dyno my car again at Driver Source. |
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03-07-2012, 08:09 AM | #36 |
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Your results are contrary to those of most other results on the pulley. I am not sure why they are contrary, but generally, the outlier results such as yours are the ones to toss aside.
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03-07-2012, 08:11 AM | #37 | |
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03-07-2012, 08:25 AM | #38 | |
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My point is the xpipe with HFCs provided obvious gains over stock (there is no margin of error here); the other parts don’t provide obvious gains (in fact, the parts don’t provide any gains). I liked the sound and looks of my RD Sport exhaust so I can live with the fact the exhaust doesn’t make power, but the pulley and filter are just a waste of money (IMO). Anyway, back on topic: KennyPowers approach should help determine if the intake and/or pulley make power. |
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03-07-2012, 08:25 AM | #39 |
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In for the results. I'm thinking of going this route and curious if the same result can be replicated from EAS. They have done numerous of test on the same setup and all has great results!
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03-07-2012, 08:28 AM | #40 |
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To keep this post on topic, could you PM me dyno results showing a pully making power? I'm more than happy to say my results are a outlier if you can show me a pulley making power on an M3.
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03-07-2012, 08:33 AM | #41 | |
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A rear exhaust alone doesn't make significant power - Evolve showed this in their exhaust research for their valved exhaust. However, the pulley and intakes have been shown to make power repeatedly - albeit minor. The only real debate at this point is if the elbow of the S2 intake itself makes significant power, or if it is just the filter. Personally, I don't believe you are going to be able to measure this on a dyno as the change is likely too small. It will require a pressure test to really prove the reduction in restriction. You must have the only M3 in the world that dynos the exact same power in different conditions : ) |
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03-07-2012, 08:50 AM | #42 |
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03-07-2012, 09:50 AM | #44 | |
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