Quote:
Originally Posted by **********s.com
I never said that dyno testing couldn't be done on the same day. I'm simply saying that the ECU should be given time and miles to adapt to any new parts before it's able to reach its full potential. For example, when Mike Brown, the CEO of **********s.com did his dyno for his 135i he ran into the same dilemma that a lot of people are facing with a power loss. The first dyno run he did with the aFe intake installed showed a power loss of 14. The second run a power loss of 12 and the third run 11. Each time the dyno was done showed less and less of a loss. The final decision was to go ahead and drive the car for 200 miles and do the dyno at a later date. Once the ECU was given time to adapt the car showed a gain of 12 horsepower. Yes, the weather variable can be taken into consideration. However, the dyno for Will's M3 with it's stock intake box was done on a rainy day which was much colder than the day of the aFe intake dyno.
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Mike also has a JB3 installed, correct? Which map was he running during testing?
Who specified these 200-400 miles is required for adaptation? Even a bad batch of fuel can skew end results. Mike was even present during the intake shootout we did at evosport in which various S54 intakes were tested, all with a 30 minute drive in between runs for adaption.
As stated before - there are a lot of unanswered questions. I've seen companies direct fans into intakes, ice down intakes, load the rollers during the baseline run, drop in a few gallons of race gas, you name it: in the quest for that magic peak numbers. I don't think SP would do these types of things, but others do. We can only take your word for it.
PencilGeek posted an excellent article on this very subject:
http://www.m3post.com/forums/showthread.php?t=305673
Peak numbers don't mean squat. "power loss of 14" means nothing. We want to see relative gains across the board, comparing deltas. What other modifications were performed? Will also had the GIAC flash performed at our facility last September and I think is running Powerchip now.
This information should be listed in advance when making claims. The weather variable is only one of many things to be taken into consideration.
On the subject of the N54 intakes, these
lost hp across the board after installing, there are
numerous posts about this on e90Post and 1Addicts, yet are still touted as making over 30hp. Please don't cloud facts with guerilla marketing, M3 owners are educated enough to know the difference.
Back on the M3 subject - according to the chart, an entire month elapsed between runs. Were the dynos performed with the hood up or down? What were the conditions like before and after? If you do not have environmental data handy, it can be extracted from the DRF files (assuming it was a dynojet) if needed.
Please understand I am not flaming you personally in any way, but want to get cold hard facts out there as we have enough "independent reviews" out there with much different intentions than being an enthusiastic one. If the results are accurate - then that's a step in the right direction, but the stock airbox was a very good design from the start.
Time will tell if these claims hold water as others who purchase the kits will be making their own trips to the dyno and will be posting their results.