I figured with all the guys buying them there would be some additional feedback.

Whats happening?

 

Don't ask.
All you will probably get is the usual " butt " dyno impressions such as ,

let me guess :

fantastic throttle response thru the entire range,
definite hp increase ,the car pulls much better in all gears ,
the car seems to "breathe" better ...
it " sounds " more agressive, more powerful....... Lol

 

I too have been waiting to see some independent real world results. I don’t want to hear subject appraisals but see objective numbers like a before and after dyno run or before and after ¼ mile time slips on a stock 997S and then a stock 997S with just the plenum modification.

I want to see how changing out 6� of tubing midway through the induction system will net better results than Porsche can achieve with the X51 kit.

 

Yea, I'm sure a $1K metal pipe will give the same power as a $17K factory option. People are so gullible. Maybe if you got 17 of those plenums you wuold have 695HP as well

 

you guys got to be kidding........... can you honestly say that you dont see how smoothing out the air flow translates to some hp.....as for the 17k factory option ......well lets see a factory areo kit 16k a full tech art kit about 8k........factory painted intirior trim 4-5k [not exactly sure someone correct me]same thing with bumper plugs about $1500.my point is factory will over charge everything so dont look at the price look at results.i have it did i feel a tremendous diffrence ?????no did i feel some difrence....yes but more importantly deputy dog posted dyno charts before and after.maybe you should read that before you go saying people are gulible.......just my .02

 

porsche is constrained by many things that may be at odds with maximizing hp. here are three examples. emissions, noise and cost. don't assume that if porsche didn't do it, it can't be done. the stock plenum may cost $1.00 because of its ease of manufacture. the more complex rss style may cost porsche $6.00. it could be as simple as that.
here's another thought. many manufacturers have good working relationships with the aftermarket and intentionally leave a little hp out there to help after market sales. remember, part of what sells these expensive cars is the buzz created by the entire industry. just look at an add for the tire rack, many times there will be a porsche or other high performance car featured. free advertising for that make. SEMA says the aftermarket is a multi billion dollar industry. i have to imagine that quite a bit of that stuff must work.

 

1. All this tee does is direct the air from the main inlet into either
the left or the right cylinder manifolds .
From there , the air has to go thru at least 3 more turns before reaching it's cylinder .
So even if a slightly smoother airflow were achieved at this tee,
it would be lost at the next turn .Long before it got to the cylinder.

2. The result of the factory X-51 option is 27 additional hp.
GUARANTEED . No hype , no " butt " dyno BS.
If it's worth it or not, is an individual choice .
Either way , it's cost was mentioned only to make a point .
It takes a lot more to gain 26 hp from an NA engine than a glorified pipe tee.
And I for one have issues with anyone who claims it will .

3. I did not see any before and after dyno charts from Deputy Dog.
But even if he had posted them, it would mean nothing and prove even less
since he has a supercharger in his car .
His airflow and that of a NA engine are two totally different applications.

Anyway, unlike other mods, at least this one will not ( as far as I can see )
result in any potential damage .So, as long as your'e happy with it,
enjoy your car .

 

i dont feel im justifing anything.........IF a stock 997s and a 997s with full exhaust,plenum were in a track ....assuming both drivers are the same who would win?....HOWEVER YOU ARE RIGHT THERE IS NOT THAT MUCH OF A DIFFRENCE......UNTIL YOU SC....as for what i have spent on my car that is my choise to personalize and set it apart from another c4s [whatever makes me happy i guess]

 

1 so if we are in a racetrack with 4 turns and i go into turn 1 faster BUT we are even on turns 2 3 4 at the end of 10 laps does it matter that we were even 2 3 4.......in other words if it smooths the air out in turn one it did help[$1000 worth?....you decide]

2 WHAT?......what do you mean no dyno bs?so you will take their word for it[x-51] but on the other hand you wont belive what a fellow 6speeder tells you and backs up with a dyno

3 what does it matter if hes sc or not?all that matters is before and after.

anyways i dont work for the company that makes theese fu@#%ng things im just giving my opinion.

 

I'm not sure if it's the standard offer, but Greg at RSS offered me a money back gaurantee. I took him up on the offer, and I'm happy. I can "feel" a difference in performance. Having tons of 2-stroke dyno experience I can tell you that numbers can be EASILY f-ed with. The term "Dyno Queen" comes to mind. Anyway, I was skeptical, still think it's over priced, but compared to other "magic bullets" promising improved performance I believe this one actually works.

 

Even an x51 911 will only pull slowly on a "S" car (per Excellence mag) so unless this thing really puts out one would never be able to tell the difference before and after.

 

Neil, I can "feel" a difference, I'm not imagining that. Does that mean it's faster? Who knows, I didn't do timed runs before and after. But, the car "feels" better to me. Throttle response is better, feels more "throaty." For lack of a better term. I'm not racing people on the street on a regular basis, I could care less if my car is 1/10 of a second faster in the quarter mile. I do care how my car "feels" to me and how it drives. This option made my care "feel" better to me, which in my book makes me Happy.

 

Very Risky,
I agree with you 100%. I have the plenum and the difference is noticeable. You were first skeptical about it until Greg issued the challenge and now you are happy. That is all that matters.
For all you naysayers, please go to the 996 thread on the $200 modification. This guy has perfected an insert for the stock plenum which directs the airflow more efficiently just like the RSS plenum and has actual before & after dyno runs to prove the results. He has 996 & 997 people bugging him to death to get one. Otherwise go spend the 17k for the x51 upgrade and leave us alone.

 

ps-thread is by Xdream-titled "Cheapest Mod for Greatest Results"

 

Holy sahit-----------------------I got da plenum in and I pulled on a H2 today. I put a bus length on him.....Da plenum rocks.......If you don't believe my report come visit and we can probably line up on some cars.

Come on guys who cares if it makes you happy thats all that matters.

Aloha

Byron