DSport Mag has Evo cam test part 2 -- all 17 cams.
Newbie
Joined: Mar 2014
Posts: 6
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From: Orange County, CA
I don't really have a "dog" in this fight (Evo X, not an VIII), but I've always loved DSport (2 year subscription just ran out). I'm no master of dynos or the article in question, but I DO appreciate that the DSport staff came in and cleared up a seemingly questionable set of data (Again, not making any claims or assertions) without getting salty about it...nice job guys.
That being said, you should not do your research or make a decision based on ONE source medium, and anyone that reads ANY singular article and calls it golden fact has not done due diligence. Look for answers EVERYWHERE, decide for yourself what is credible, and go from there. Learn to read analytically, question everything, and read until a subject is ingrained and boring before making a decision.
WRITERS.....information you compile and publish needs to be as accurate and scientifically solid as humanly possible, and the areas of weaker methodology printed clearly with an intent of transparency (do the opposite of governments). As stated earlier SOME people will take an innocently or even carelessly written sentence, graph, or chart as if it's the be all end all of gospel writings....do you want that on your conscience if a mistake or assumption is made?
OPINION journalism is subjective based on experience and earned credibility, FACTUAL journalism should rely heavily on eliminating variables wherever possible when testing, and being up front about the variables that were NOT able to be controlled.
That being said, you should not do your research or make a decision based on ONE source medium, and anyone that reads ANY singular article and calls it golden fact has not done due diligence. Look for answers EVERYWHERE, decide for yourself what is credible, and go from there. Learn to read analytically, question everything, and read until a subject is ingrained and boring before making a decision.
WRITERS.....information you compile and publish needs to be as accurate and scientifically solid as humanly possible, and the areas of weaker methodology printed clearly with an intent of transparency (do the opposite of governments). As stated earlier SOME people will take an innocently or even carelessly written sentence, graph, or chart as if it's the be all end all of gospel writings....do you want that on your conscience if a mistake or assumption is made?
OPINION journalism is subjective based on experience and earned credibility, FACTUAL journalism should rely heavily on eliminating variables wherever possible when testing, and being up front about the variables that were NOT able to be controlled.
Although many of these camshafts we tested have been tested before, in the past, changing a camshaft required a complete recalibration of the ECU's fuel maps. With the new Volumetric Efficiency (VE)-based EMSs on the market, we were able to minimize the A/F variance from run to run by utilizing closed-loop lambda feedback and VE fuel tables. That's one of the main reasons we came up with the idea for the 4G63 EVO camshaft showcase. We covered the vehicle build and testing procedures in Issue #137. At the end of the day, a lot of online/blog-type media outlets simply don't care anymore and are littered with advertorial-type pieces. That type of editorial doesn't benefit the reader, and in the end, only hurts our industry.
Evolving Member
Joined: Jan 2010
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From: Hell
As Zombie Killer mentioned, you should never look at just one source for an answer. Forums are designed for people to come and discuss the different things that they've found. We appreciate everyone's input, suggestions and feedback here.
Although many of these camshafts we tested have been tested before, in the past, changing a camshaft required a complete recalibration of the ECU's fuel maps. With the new Volumetric Efficiency (VE)-based EMSs on the market, we were able to minimize the A/F variance from run to run by utilizing closed-loop lambda feedback and VE fuel tables. That's one of the main reasons we came up with the idea for the 4G63 EVO camshaft showcase. We covered the vehicle build and testing procedures in Issue #137. At the end of the day, a lot of online/blog-type media outlets simply don't care anymore and are littered with advertorial-type pieces. That type of editorial doesn't benefit the reader, and in the end, only hurts our industry.
Although many of these camshafts we tested have been tested before, in the past, changing a camshaft required a complete recalibration of the ECU's fuel maps. With the new Volumetric Efficiency (VE)-based EMSs on the market, we were able to minimize the A/F variance from run to run by utilizing closed-loop lambda feedback and VE fuel tables. That's one of the main reasons we came up with the idea for the 4G63 EVO camshaft showcase. We covered the vehicle build and testing procedures in Issue #137. At the end of the day, a lot of online/blog-type media outlets simply don't care anymore and are littered with advertorial-type pieces. That type of editorial doesn't benefit the reader, and in the end, only hurts our industry.
Newbie
Joined: Mar 2009
Posts: 81
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From: around da corner
In their current subscription D Sport updated the test with the correct numbers. They also took the time to give a thorough explanation of how the incorrect info was published and showed the correct info to back up what the real numbers really were. Which they didn't have to do. DSport is the best car magazine I have seen to this day!!
I spoke to Mike after this test and he congratulated us on having the best performing 272 cam they tested.
Had I known they were going to be testing cams other than the 272's we have sent in our 280's and seen how those do too.
We have cams in stock.
Had I known they were going to be testing cams other than the 272's we have sent in our 280's and seen how those do too.
We have cams in stock.
I'm dying to know how your 280's would've worked after seeing the 272's
Without reading the whole thread to find out..... please can someone fill me in on:
What engine capacity/configuration?
What turbo?
What compression motor?
What fuel?
Was the map unaltered between cam swaps?
Were vernier pulleys used? If yes - were they swung at all?
What engine capacity/configuration?
What turbo?
What compression motor?
What fuel?
Was the map unaltered between cam swaps?
Were vernier pulleys used? If yes - were they swung at all?
FP 3586 .63 @ ~21psi
E85 from the pump(Filled the car, and cans of gas to ensure that all pulls were on the same pump e85)
Map was not changed, because the AEM Infinity is VE based, the map would adjust the VE so afrs were more or less a perfect match
