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Old 03-15-2017, 12:26 PM   #76
imma_stocker
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In for time slips.

ALL dyno numbers are skewed from the get go.
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Old 03-15-2017, 01:05 PM   #77
bnelsonWRX
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Quote:
Originally Posted by imma_stocker View Post
In for time slips.

ALL dyno numbers are skewed from the get go.
this is true. its not to bad if back to back testing is done to compare on the same dyno in the same conditions.
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Old 03-15-2017, 01:11 PM   #78
maperformance
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Unless intentional, dyno numbers should not be skewed at all. Especially if one set is run, and then swapped out in a timely manner, and then tested same day, same conditions etc. Too many variables in time slips. It would be hard to compare a simple bolt on mod while keeping the same driver, same launch, same shifting, same day, same temp, same wind speed etc....

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In for time slips.

ALL dyno numbers are skewed from the get go.
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Old 03-16-2017, 06:31 PM   #79
imma_stocker
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Drag racing math is drag racing math.... 60' makes the biggest difference in ET and trap speeds tell the real story of high rpm power. One perfect example, 900hp vette runs 12.1 trapping 140 (hilarious by the way when the other lane has a 400hp fox body running 10.0 @ 125).

Inconsistent driver time slip tells me more than a dyno plot. But yes, back to back dyno pulls are as close to controlled situation as dyno pulls get.


JR, you have a consistent track car. Would you mind sharing some time slips to compare the headers to your preferred brand? Similar 60' with clean shifts if possible.
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Old 03-16-2017, 09:35 PM   #80
2slofouru
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I'd wager swapping the headers from one car's pulls to the next and a controlled shop temperature using the same dynamometer for consecutive runs will yield a much more accurate view of the headers' performance. There are way too many factors to use time slips, as mentioned already. Controlling the shop environment and having all needed equipment at the ready is a lot easier than doing all of the needed work at a track.

Quote:
Originally Posted by maperformance View Post
Unless intentional, dyno numbers should not be skewed at all. Especially if one set is run, and then swapped out in a timely manner, and then tested same day, same conditions etc. Too many variables in time slips. It would be hard to compare a simple bolt on mod while keeping the same driver, same launch, same shifting, same day, same temp, same wind speed etc....
This
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Old 03-17-2017, 06:54 AM   #81
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Also in for the lol's on this. Just lookin' for the sign up sheet for an extra 70HP
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Old 03-17-2017, 08:49 AM   #82
maperformance
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Good luck...Really, I too have a hard time believing those results, which as I mentioned multiple times why I am sending one to Jr. for more accurate results.

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Also in for the lol's on this. Just lookin' for the sign up sheet for an extra 70HP
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Old 03-18-2017, 05:51 PM   #83
sabreofsd
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Looking forward to more results
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Old 03-18-2017, 06:52 PM   #84
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also curious to see the comparison
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Old 03-22-2017, 02:45 PM   #85
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What's interesting is in the first post MAP is totally on board with and boasting about the results like its fact. Then later in this thread MAP also questions the results after so many people called them out as skewed / not believable.

Will be VERY interesting to see what happens with JR/Prime's testing.

In for results!
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Old 03-22-2017, 02:49 PM   #86
maperformance
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The first post was made by a very excited employee here. You can't blame a car guy for that. I simply came in to bring some validity to the thread, and provide what I would consider to be a more realistic test. I don't want people assuming we are a company here to "brag" about numbers. I just want to find out if the damn thing works. That's all.

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What's interesting is in the first post MAP is totally on board with and boasting about the results like its fact. Then later in this thread MAP also questions the results after so many people called them out as skewed / not believable.

Will be VERY interesting to see what happens with JR/Prime's testing.

In for results!
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Old 03-22-2017, 03:54 PM   #87
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What's more interesting Is getting notifications for non sense posts, and not the results most subscribed for.. Just wait for Jr or Prime to posts their results..
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Old 03-26-2017, 06:53 PM   #88
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Quote:
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What's more interesting Is getting notifications for non sense posts, and not the results most subscribed for.. Just wait for Jr or Prime to posts their results..
I agree
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Old 03-26-2017, 09:44 PM   #89
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delete this post
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Old 03-26-2017, 09:45 PM   #90
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I agree too, people need to stop posting BS and clogging up this thread.

Unsubscribed.


Quote:
Originally Posted by user1029 View Post
Lol Agency Power aka vividracing the most criminal, conniving aftermarket company still in existence

I would also love to be a candidate as an independent tester for these headers. I'll get IAG to put them on the dyno and run it on my modified set up and compared it to my trusty GTSpec EL headers that I've logged 110k miles on

If they produce awesome results, I will channel my inner Mormon and spread the praises from the highest of mountains to the lowest of lands - via the interwebs.

Here is my setup http://www.iwsti.com/forums/gr-membe...000-miles.html (my name comes up as a google suggestion )
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crickets
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*still crickets*
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My car is a temple - only sustainable, organic parts go on it
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Old 04-06-2017, 12:46 PM   #91
p23demarco
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Curious to know if there is any update on these?
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Old 04-06-2017, 02:40 PM   #92
maperformance
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Not sure. Jr. received the manifold on 3/7/17. I'm sure he is working on actual projects at this time.

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Curious to know if there is any update on these?
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Old 04-14-2017, 10:13 AM   #93
Foo_Blyat
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I agree too, people need to stop posting BS and clogging up this thread.

Unsubscribed.
Lol. No one cares about this guys car so he's salty

Last edited by Foo_Blyat; 04-14-2017 at 12:06 PM.
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Old 04-16-2017, 08:28 PM   #94
DavC825
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Lol. No one cares about this guys car so he's salty
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Old 04-25-2017, 06:22 PM   #95
themasimoto
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These headers have huge primaries and have a huge outlet to the uppipe... wouldn't this be terrible for spool up and not flow smoothly into the average size uppipe (hitting the edges of the much smaller inlet)?
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Old 04-25-2017, 06:30 PM   #96
themasimoto
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I ordered one (will be coming tomorrow) and I will be one of the Guinea pigs for this header.

Stock JDM EJ205 non-avcs
SoCal Porting 20G 7cm
Cobb intake
Perrin inlet
Grimmspeed ported headers/X-pipe
Grimmspeed uppipe
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Invidia Catless DP
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Old 04-28-2017, 01:56 PM   #97
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Any updates and/or new info on the header? Anyone got one?
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Old 04-28-2017, 02:23 PM   #98
Dave D.
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Any updates and/or new info on the header? Anyone got one?
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Old 04-28-2017, 02:48 PM   #99
maperformance
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Not sure man. Jr. has had these in his possession for over a month....

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Old 04-28-2017, 02:49 PM   #100
maperformance
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Duplicate reply

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