Well so far the results are not crazy exciting. We are not quite done with the Test due to bad valve springs that were in this car. While I feel the results will not very, to make this a true test we must know. So the AMS which he is going to run anyway will go back on the car tomorrow and we will redue the test with the AMS again.

I was not really planing to do the test but when Alex wanted the AMS F1 intake for his build and it was there in the shop I just had to know the answer of what the difference is. While I had done a few F1s in the past I had no way to compare.

We finished his build last week and got about 100mi break in on the car and oil changed before we did our base line testing this Monday.

Here is the basic build on the car. (Build took 2 weeks)

-ER long rod 2.4
-ER Ported head HKS 280cams Now has FPBehive springs was old DSM BJ springs
-FP Black Turbo
-ER 3.5in Cold air intake
-ETS lower pipe
-FIC1450s
-BR Double pumper E85
-AMS oil pan
-SD tuning by Aaron
-AMS F1 Intake

Looking at the 2 intakes its amazing how different the theories on design are but such close results. The AMS uses a huge plenum which is good for top end power but then makes the runner much longer which is good for low end power. The Magnus uses Short runners which is good for top end but a smaller plenum which is better for low end. I feel the boost on the Magnus is faster due to so much less volume to fill. The AMS is Huge almost rubs the ABS. We had to kinda of pry the ABS pump over so it would not rub the intake.

Will have pics of the 2 side by side tomorrow and the weight difference.

Here is the current dyno until tomorrow


Here is a little Video I made feel kinda of dumb but trying to make more videos.

http://www.youtube.com/watch?v=5oEslQS3kQw

Update here the results its also on page 3
Well we redynoed Friday and came up with the same results. So for this combo anyway the Magnus is a winner.

Points I like better with the AMS though
-Comes with a dip stick that fits nice. The Magnus is up to the installer to bend up the stock one and mount. Its easy enough to zip tie or clamp to the side of the #1runner.
-Has a nice bracket that bolts like factoy. May be needed due to the longer runners and added weight of the AMS intake
-Comes boxed like you just bought a LCD TV very professional looking.

One thing that did change in the test which I thought it might was the spool area is the same. During the 1st magnus testing with the Bad valve springs the spool was the same and only the loss during the valve float at 7.5k.

Here is the best to best with the new springs and tune as close as we could get it.




http://www.youtube.com/watch?v=2i0JN0u3te4

 

so we'll wait another 24hours)

 

Would the difference in boost pressure indicate more of a restriction with one or the other? Also possibly the cause of the small top end power increase... I love seeing these comparisons though

 

Being both are cast it would be interesting to bolt the Skunk2 intake on it, seems to be working great on my car.

 

I have been waiting for someone to do back to back tests with these two manifolds, so thank you for doing the comparison and sharing the results. I know alot of time and effort goes into doing these tests and the scrutiny that can accompany them so thanks again!

for English Racing

 

Good comparison. Looking forward to final results

 

Thank you for doing this test! Been wondering a while which was the better design. Looking forward to results!


-Bink

 

thank god my head hurts every time i go back and read the 26 page thread i just wanted clear results english racing brings it again.

 

Should be interesting to see the final results from this test.

Can't help but wonder if on a something like a 6262/ 6265 or even a 6765/ 6768 based turbo setups making a bit more power if we would see more pronounce results.

Regardless though, great to see some testing...

 

nice job Aaron and Luke!

 

Amazing to see that even though they are such different manifolds the power curve is so similar. You don't have any graphs with the stock mani on the same car do you?

Thx for sharing

 

Nice. Can't wait to see the results.

 

also intresting to note that both have a few fitment issues something that i think should have been corrected before they were both released.

 

The variations in boost pressure are only down low and I believe relative to the feedback in the HKS EVC...note I said EVC not EVC III or EVC IV. While the peak numbers are higher on the Magnus and it holds better out the top (about 13whp) it does give up a smidge down low (about 13 ft lbs.) Both are great intake manifolds, but for me personally my car works in the higher rpm range and with my turbo I want more out the top. Losing low end (even if only 10 ft lbs) on my car isnt a bad thing though

 

Out of curiosity, is their an appreciable weight difference?