BMC air filters vs Evolution V-Flow intake | + S vs Turbo

[roxboxxx]

Searched the forums but did not see a direct comparison (is there???). Does anyone have experience with

Stock Air Filters -> V-Flow intake

Compared to

Stock Air Filters -> BMC or K&N

I already read that stock to BMC reduces the low end lag, so that is clear. I am more interested in someones experience with

going from stock to BMC and then saying "hell - lets just go to the V-flow" or someone who went right from stock to Vflow.

I am looking for Increased performance + sound from the engine. I already pulled off the secondary cats (which was well worth it),

but I swear I cannot hear so much as a peep from the engine.

In addition to the EVO, does anyone have any experience with the non-branded airkits they sell on ebay for around $280 (like the evo but no hot air sheilds).

And lastly - I am considering trading my mint 16K mile 05 s for a higher mileage Turbo. With the right deal I can probably lateral with a few thousand bucks tossed in. Goal is more performance + air ride (which I like - jersey roads can suck). Anyone do that recently? Feeling/feedback?

Thanks guys!

[cnealracer]

I just installed the v-flow system to my '04 TT in addition to diverter valves, and I am really happy with the result. Its not as easy as I thought it would be, but nothing ever is when working on a german vehicle. There is more engine noise, but the car is noticably quicker, and seems to have a better throttle response.

Chris

[egr58]

I have an '08 S, bought it almost exactly a year ago at Manhiem with 8,300 miles on it. Installed Fabspeed catbypass pipes at 10,500 miles; Sprint throttle booster at 22,500 miles; and (three days ago) at 33,900 miles the EvoMS V-Flow air induction system (kit). Truck is peppy, responsive, quick, and sounds great without being pretentious - no regrets - I'd do all the above again without hesitation, although I'd do them all right after I got the truck instead of in stages. This is my first Porsche, it will most certainly not be my last. Staying focused, I don't have any experience with BMC one way or the other. Based my decision to go with EVO on posts herein, their (EVO's) site, and my personal belief that this truck is a seriously oober engineered panzer wagon. I think the people (sic after market product developers) should be rewarded for the R&D time they spend developing solutions that enhance this package in the spirit of Porsches' design concept without sacrificing reliability / longevity. The low frequency resonating rumble that you feel first, and then hear coming from under the hood after installing the EVO is most satisfying. Hell - just go for the V-Flow.

Edited December 24, 2009 by egr58

[retool]

I have an '08 S, bought it almost exactly a year ago at Manhiem with 8,300 miles on it. Installed Fabspeed catbypass pipes at 10,500 miles; Sprint throttle booster at 22,500 miles; and (three days ago) at 33,900 miles the EvoMS V-Flow air induction system (kit). Truck is peppy, responsive, quick, and sounds great without being pretentious - no regrets - I'd do all the above again without hesitation, although I'd do them all right after I got the truck instead of in stages. This is my first Porsche, it will most certainly not be my last. Staying focused, I don't have any experience with BMC one way or the other. Based my decision to go with EVO on posts herein, their (EVO's) site, and my personal belief that this truck is a seriously oober engineered panzer wagon. I think the people (sic after market product developers) should be rewarded for the R&D time they spend developing solutions that enhance this package in the spirit of Porsches' design concept without sacrificing reliability / longevity. The low frequency resonating rumble that you feel first, and then hear coming from under the hood after installing the EVO is most satisfying. Hell - just go for the V-Flow.

Hi---I am thinking about the EVO also...put it on my Boxster S and it was great..What did the catbypass do and how much?

Thanks--Dave

[egr58]

David - Catbypass were a little under $600; they had the copper gaskets and were a 2 hr do-it-yourself project. Install tip - just snap (tighten until they break) the [original] forward flange bolts off ; you'll save yourself a lot of aggravation. They sound great - raspy v-8 rumble, although you don't hear anything over the stock setup until you are at 2800 rpm. Perfect for easing back into the neighborhood without attracting an evil eye glance. Very subtle sound from the front area of the vehicle, although the occasional rear passenger now refer to that spot as the 'rumble seat'. I've seen more than a few posts about owners experiencing a "rattle"; I have not experienced any - I suspect it has to do with installation; make sure you have clearance when doing the final tightening. I didn't do a dyno before / after - the butt dyno definitely says there is an improvement. I have received a lot of comments from people on the sound and tonal quality - all positive. The trucks should really come this way from the factory.

Edited January 13, 2010 by egr58