[Chris@VargasTurboTech]

Tony had to drop some pistons off over with the fine gentlemen at Rebello Racing, and being as they have a flow bench... well, it just seemed like some testing was in order.

We grabbed a stock outlet we had laying around, and one of the new VTT aluminum outlets right out of the bin they get pulled from for shipping. We asked Dave if he would mind some back-to-back flow testing. The guys are Rebello Racing are awesome so they didn't hesitate to stop everything they were doing in order to indulge us.

We didn't do anything fancy, as this isn't a fancy test. We ran all tests at 28" of water, which is standard for most flow bench tests. The flow bench they use is an SF-600, which can flow up to 600 CFM. You can read specs about it to your heart's content at this site: http://www.assurich.com.my/engine-dy...low-sf-600.htm

We began by installing the stock outlet on the bench using a 2.5" silicone adapter and turned the machine on. Dave does A LOT of flow testing, so his guess that "Range 4" was about right was dead on. Range 4 has a maximum flow of 295 CFM at 28" of water. Results showed it flowed right at 73% (of 295 CFM), so the stock outlet flowed 215.4 CFM.

With no setting changes, we pulled the stock outlet off and put on the VTT aluminum outlet. When turning the machine back on, it flowed 100% at 28" of water -out of range (high) on Range 4 and Range 5. Dave laughed and said "you maxed out my flow bench" as he rarely has to use "Range 6". Dave schooled Tony on the topic after testing and explained how if you have ranges left unused, once you hit above 75% you'll always want to go up to the next range and bring the flow percentage down into a more reasonable range for more accurate readings. Range 6 has a maximum flow of 597 CFM at 28" of water. When Dave turned the machine back on, we could see that the VTT outlet flowed 59% (of 597 CFM), so the VTT outlet flowed 352.2 CFM.

The VTT outlet flows 1.63x as much as the stock outlet. This is a significant difference.


Keep in mind this is a flow bench designed to test NA heads for flow. The CFM reading isn't representative of what it would flow under boost, the purpose of this test was to simply state, outlet A stock when put on a flow bench flows X. Outlet B VTT under the same conditions flows 63% more. This should lay to rest the doubts about performance.


Results Recap:
Stock Outlet: 215.35 CFM @ 28" water
VTT Outlet: 352.23 CFM @ 28" water
Difference: VTT outflows by ~63%

Vids:
Video #1: Stock testing

Video #2: VTT Outlet testing

Video #3: Wrap up

[Paanzerfaust]

Awesome - one of the things I really miss about having an LS-equipped car is that tests like this were pretty much standard for vendors to include when advertising their products rather than just Dyno sheets that are dubious at best, so big props to you guys for this. It's good to know your product will at the very least take a good amount of strain off of the turbos.

Any plans for possibly flow testing your inlets too? Inlets are gonna be coming down the pipeline for me shortly here and I'm sure everyone else would like to see testing like this too. Worst case scenario is you end up as one of the few (if not only) vendors who has verified testing for your products and that alone should help your sales + give customers even more peace of mind.

[RSL]

Originally Posted by Paanzerfaust

Any plans for possibly flow testing your inlets too? Inlets are gonna be coming down the pipeline for me shortly here and I'm sure everyone else would like to see testing like this too. Worst case scenario is you end up as one of the few (if not only) vendors who has verified testing for your products and that alone should help your sales + give customers even more peace of mind.

Welcome to 3 years ago.

http://www.e90post.com/forums/showthread.php?t=1126801

http://www.n54tech.com/forums/showthread.php?t=30772

[TemjinX2]

its always good to see vendors continue to improve on the plateform.

[Paanzerfaust]

Originally Posted by RSL

Welcome to 3 years ago.

http://www.e90post.com/forums/showthread.php?t=1126801

http://www.n54tech.com/forums/showthread.php?t=30772

Welp, while I appreciate your condescending (for no reason) post, neither of those threads is what I asked for. And other than mentioning that it's nice when vendors provide flow charts I dont see how you'd think that was worth your know-it-all attitude. The first link is MMP only, and the second link is a thread that was made by MMP largely to flex the MMP non-stock-compatible inlets, and aside from that it's still relocation vs stock location by a competing vendor.

Even aside from the fact that I have no interest in a dick-swinging contest post from a vendor (which is why I asked if VTT was going to compare their inlets to the stock ones, like they did here with the outlets, and not if they could compare theirs to x vendor's), right in that first link of yours it explains how the chart they generated had to have "projections" thrown in because the flowbench wasn't capable of testing it the way that even MMP was shooting for. A flowbench is already going to be different than real world anyway, why throw anything else into the mix?

You prefer MMP? Fine. You don't like Tony? Understandable. You aren't personally interested in the results? Cool, don't read them. But a test run on the same machine as their other parts were tested on - especially if the bench is capable of properly producing results - in order to compare the flow difference between stock and their own inlets will only benefit people on the platform.

Originally Posted by TemjinX2

its always good to see vendors continue to improve on the plateform.

Yep, exactly. Appreciate the info Chris. The more I see your recent posts around here the more interested I am in your products, so hopefully I'll be able to get some first-hand experience with them in the near future if everything looks right for me.

[RSL]

Actually, just pointing out testing occurs. VTT certainly wouldn't be the only vendor that does them and those links regarded inlet tests. I thought I was passing long info that you'd be interested in. The cars and gear and vendors have been around a while, there is usable data out there. If you found it condescending, you took it the wrong way.

Read the threads years ago and if you take away all the BS, larger inlets flow more than stock (i.e. increase efficiency) no matter what actual numbers are, what adapter is on them, who's they are or what flow bench they're on, but I get people like direct comparisons. Also helps to look the bigger picture. If they're willing to run more tests specific to your request, great.*No such thing as too much data.

I have no dog in any vendor fight. I don't run VTT or MMP products currently and don't buy parts straight-ticket from any one vendor. Has more to do with what works, what I actually need, cost and sometimes flat out comes down to who has what available when I need it.