993inNC

Why do you say that? We used to change out VW throttle bodies to Audi units, hone out the back side of the intake manifold for a free'r flow and it made huge differences when coupled with proper exhaust parts.

1irondog

The 996 and 997 plenums have been put on a dyno and have increased HP. I was just trying to share something that was exciting to me, because we all know how difficult it is to get added hp to our N/A 993's. I must add that I do have an automotion chip and DACH X bypass pipe so Im sure all of these factors come into play. OPINIONS ARE LIKE ******** EVERYONE HAS ONE !!!

1irondog

I will look into getting my car on a dyno and post the results after I get back from vacation!

cabrio993

So... is this a prototype? Are you part of a test group? How much was it?

I just don't understand the secrecy. Why woud he ask you not to say anything?

if a mechanic has such a plenum, he would like for you to spread the word so he can sell more of it.

gr8330

+1

1irondog

If any of you are intrested PM me. thanks

Pan58

what year is your Car... Your Atavr shows a 95 ???

RallyJon

Pass smog. Pass gas. Pass a lie detector test.+1 million!

Wherever there's a real horsepower claim, there's either a battery of dyno testing behind it, or it came from the finance minister of Nigeria.

Hogging out an induction system isn't a secret. There are NO legitimate speed parts that are a secret, at least without a patent. The minute you sell your first one, your Nobel prize in Porsche engineering is put up for instant peer review, and "I felt..." can go back to the custom upholstery forum where it belongs.

1irondog

Yes 95 Don't know about smog!

mrsullivan

i dont know why everyone is being so rude...

maybe this is legit, maybe not... if not, who cares?

Floodj

Okay, I will be the dumbie... What is a plenum?

cabrio993

"A plenum is used on a fuel injected engine. It channels air evenly into the heads. A butterfly valve (connected by a cable to the accelerator pedal) is bolted to the inlet, along with a TPS. The butterfly regulates the amount of air entering the engine. The TPS works, in conjunction with the butterfly valve, to regulate the amount of fuel delivered to each injector."


Modified performance Plenums
http://www.roadsportsupply.com/IPD_Plenums_Porsche.html

Mark in Baltimore

Exactly. I am not an engineer nor a mechanic, so I am open-minded enough to remain impartial on the subject of potential horsepower claims. However, the proof is in the pudding, and that pudding needs to be made not once, not twice, not three times, but over and over again.

Until there is at least one dyno test, this is all just talk. However, in the interest of the racing horsepower wars and representin' the 993 on the track, I hope the claims prove to be true.

Mark in Baltimore

mrsullivan,

I think, on the Rennlist forums, you would be in the distinct minority if someone made horsepower claims that they could not be backed up.

Oh, wait, that's right; according to some here, there's no Rennlist honor. Uh, yeah, right.

MarkD

that is a lot of freakin' pudding. Why does there need to be so much pudding?