gernby, why does the Helmholtz cause a loss of power? Does it create turbulance in that area and disrupts airflow? Is it the same with the OEM Helmholtz resonator?

 

Well after ARK left a lot potential buyers hanging in their original introduction post of this supposed "quiet" single, it's about time we see some real feedback. From the looks of some of the welds, it come be better & improved esp for their original asking mspr price. It looks a lot bigger than I thought. Did you weigh it? I'll also be checking back for the video of the sound. However I don't think i'd buy it for more than $500 even if it's a quiet single. Why couldn't they had tucked the extra canister up more?

 

The stock exhaust does not have a Helmholtz resonator. It has a "quarter wave resonator", or "closed end branch duct". As far as I know, the only 2 exhausts that have Helmholtz resonators are this one and the HKS dual. Since a Helmholtz resonator cancels out pulses at certain frequencies, it could just as easily cancel out the good pulses that would otherwise increase torque. That's why it bothers me that they never showed any dyno plots with a lowered VTEC engagement.

 

I thought the reason to go single was to be lighter and straighter? This doesnt look either.

 

could these pics be any bigger On the other hand are you selling your invidia single?

 

Looks good minus the way too low resonator. No report on thoughts to go with those pics? On as side note - LOVE the Tamon spoiler.

 

Thanks.

 

Correct. The helmholtz cancels out specific range of frequencies. What we did was find the range in which drone occurs and measured the different variables needed to cancel that range out. The helmholtz will not affect performance in any way. We have 3rd party testers already set for getting a dyno done at around their locations. We will post them up as soon as they send over the results.

Team ARK

 

It really concerns me that you believe that. Every design element of the exhaust impacts the shape of the torque curve, especially when VTEC is engaged.

 

We have already tested this on our projects that are currently out in production.
370z
350z
G35
G37
Genesis Coupe 3.8
Genesis Coupe 2.0T
Kia Forte Single DTS
Tiburon DTS
GR WRX STI

Just to name a few. The helmholtz and quarter length pipes that we used mainly focuses on Sound waves rather than Gas.
I would be able to drive on the freeway, take it to the shop, put it on a lift, and put my bare hands on the quarter length pipe without getting burned.

The only thing we have to provide dyno charts from our testers