ACE A-350 dyno results - Did it deliver?
 

I finished up my dyno comparison with the ACE A-350 header versus my previous Revworks UEL setup. I'll post the full video and then some of the graphs and things here if you just want the nitty gritty :) The video does, however, contain all my thoughts on the how's and why's of the results, too much to type.

Notes: These tests were done at Denver altitude, so dyno weather correction is in effect. My estimation is 1%-2% deviation give or take, based on my experience doing sessions at this dyno the past 4 years, on 3 different cars. RPM's are not exact due to it being difficult to exactly align the dyno with the car, but you get the idea. It is also a Mustang dyno. Enjoy :)

Mods for the pre-ACE baseline dyno session:
Blitz drop-in filter (2017)
Perrin inlet tube (2017)
Revworks UEL header (ceramic coated)
Perrin overpipe (ceramic coated)
Berk HFC front-pipe
Custom 2.5' exhaust, stock resonator, Magnaflow muffler

Mods for the ACE dyno session:
Same as above except swapped Revworks UEL & Perrin OP for ACE A-350 w/ CSG Spec ceramic coating. Re-tuned by Zach @ Delicious.

Image 1: ACE (solid) versus Revworks/Perrin (dotted)
Image 2: ACE (solid) versus bone stock 2017 BRZ (dotted)
Image 3: Fun little heat map to show power differences every 100rpms

[ame]http://www.youtube.com/watch?v=ggQspB1P7a4[/ame]

I just finished my Delicious tune with an ACE A-350, quite a difference from the crappy stock tune and it feels exactly how it looks on the dyno chart. :)

That's pretty demonstrative in favor of the ACE.

AUC matters!

What tune did you run with the revworks?

Impressive result! $1700USD though ouch

When you add in the EcuTek Pro ECU programming and datalogging kit and Delicious Tuning reflash it’s quite a bit more than that, but in my opinion it’s worth every penny - it totally transformed my car! @justinco, is that what you found, too?

Wow, not too much of a gain vs a cheap UEL. Somewhat similar powerband as well. Too bad the chart doesn't go in increments of 10 or 5. With such a low power motor why is it scaled to an increment of 13?

Not much gain? More gain vs the revworks than the revworks vs stock. Note the x-axis alignment appears off based on the bump that's ~4500ish - I'm not sure the revworks ever produces more power than the Ace. Area under the curve is significantly improved with the Ace.

Peak, same tq. Ace has 3 more hp. Look at the heat chart. At points its significant, but overall.... for a tune specifically to the ace and the investment........

It was still ECUtek, tuned by James @ HRI. It took us probably ~15 revisions to get the most out of the Revworks (granted a lot of that was testing the new 2017 car). With Zach @ Delicious, he dialed in these #'s in 3 tune revisions. We're going to do some additional dyno tuning and see if we can get even more out of it (everything has been street tuned to this point).

Yea, this setup isn't cheap. But, I'm a firm believer in you get what you pay for. I talk about the pros/cons toward the end of the video. From stock to ACE, yes total transformation for sure. From my previous setup to ACE, it is a pretty dang good improvement, but not a transformation.

The increment is a mustang dyno thing, I don't know why. I disagree that it is "not too much of a gain vs a cheap UEL". Below is the graph of when my car was stock versus when it was tuned with the Revworks UEL setup. Now compare that to the ACE versus stock graph (or again, the ACE vs Revworks graph). The gains are almost double everywhere, not to mention the much broader curve. I guess to me, that is pretty significant.

Yea also true (off-set in the RPM's). We try to get it as close as we can, but when you do the sessions 3 weeks apart it is hard.

Difference is significant mid & down low. And that imho what might be felt & enjoyed much more then just small gains on very top car rarely is at. Both on track & daily driving. Even more so ace header with proper tune IIRC should be capable to put out most of those gains just by itself even on otherwise completely stock car, making those gains relatively stand out more. Imho it's price premium & cost ineffectiveness is too overrated, given that other headers need to incorporate separate overpipe price for sake of honest comparison & that one might get by with less other bolt-on mods.

I see the midrange difference, obviously. It SHOULD produce more power for the reasons @churchx brings up. I was just surprised the revworks performed so well in comparison (both being tuned for the header used). Would be interested to see a comparison like this to a "better" header. I have read through the whole ACE header thread and never seen a comparison quite like this one.