Level 3 clutch kit is a must but I will wait a bit on it for current one to give up.
It`s a pleasure to work on this car - so many options are open, so I just take my time to investigate and decide. Plus I need to wait a bit to accumulate some reserves after dumping $7K into rims/tires and electronics. I`m not in a hurry anyway, it will wait just fine.

 

I am still using my original clutch. A heavier clutch is only really needed if you are increasing your hp. Perhaps with the K&N filter you should install a race clutch from a TT

 

Nah, clutch work will be scheduled in par with supercharger install. Probably next summer or so. Will see.

 

The stock unit is a CAI so really why change it. The Koni challenge cars either use the stock unit or EVOMS unit.

The K&N is open to the hot air in the engine compartment and the Fabspeed red tube for the 997.1 does nothing but disable the hemholz resonator for more noise. However the 997.2 Fabspeed unit is a whole other deal!

 

dyno sheets from EVO and K&N or it didn't happen/isn't true

 

Generally speaking I was simply surprised to see those claims on ads for EVO and K&N unit to boost power up to 20+ horses so I asked if any forum member actually verified it on dyno with his own car. And it seems no one actually ever did that.

 

There are a bunch of Dyno results in this thread. It is with a full exhaust and I think he had a Evo Air Intake.

https://www.6speedonline.com/forums/...ss-plenum.html

 

Most of info I see there relates to 3.8 engines, not 3.6. Also, RSS Plenum is not exactly CAI.

My assessment though is that even after doing free flowing exhaust system, headers, cats, mufflers (what I see approx. $5K total expense) will most likely result in pretty modest 10-15hp gain top, well, based on dyno runs shown on 996 cars and very limited set of charts on 997 non-S.

Cats replacement seems to make much diff. on 997S but again it is exactly because of same reason we spoke before, lack of balance between bigger displacement engine and stock exhaust, but on base non-S 997 cats upgrade does not seem (at least I cannot find a proof) to give any considerable boost.

Again, strictly from engineering perspective it is all about balance between intake and exhaust. Considerable shift of that balance (like putting supercharger on intake) would definitely require adjustment of exhaust. But I was just curious about effects of vortex designs on Porsches. On other cars it seems to work actually, but those other cars would have more inferior CAIs than Porsche`s stock. So it is interesting topic, still.

 

These results should be relevant the 3.6, as they gains should be roughly the same for each. As I have been saying the entire system produces about what the CAI people are claiming, so it supports the comments made in this thread that they don't produce any noticeable gains as a stand alone.

Tread lightly on the SC kit, some of the claims of HP gains aren't what they really are. Do some research and read between the lines.

 

It is perfectly logical, I agree totally. It is simply matter of money - a complete exhaust re-work is not something I want to jump on immediately. Too much hassle for now. But seems like it will be due at supercharger install for sure, so it will have to be collected over time.

Plus it is not exactly the problem I do not like with this car - I do not like that torque drop in 5.5K rpm area so it will be tried first with ECU re-flash, difficult to say if it is worth its price but I am sold on dynamic gas charts they claim it has, so it may come up handy actually.
I do care more about linearity of torque than its overall boost, and it seemed to me from preliminary review that most of those aftermarket CAI do something in this regard, but with same level of probability it may be a cumulative effect from all those mods altogether.

From money perspective alone $400 price tag on K&N system is nothing, I spent more on wine monthly. But $5K on exhaust is, hmm, noticeable.

May be I will try K&N on, I am just concerned of engine well-being as it most likely will start sucking in a lot of dirt with it...

 

I have a 996 I tried the fab-speed Cai just because it is an easy DIY mod saw no gains and a little more sound, I now have that on shelf and I installed the EVOMS Cai, same thing cool looking and some sound but in no way are you going to feel 10-12 Hp even if you do get what they claim. I do not want to mess with headers and exhaust been, done that on other cars... If you want real HP get a turbo added or get a factory turbo car. That is just my opinion.

 

If I were in your position, I would hold off running into spending your limited mod budget (I am not allowed to mess with the wine budget either, my wife would be all over me about my car), I would watch the classifieds on this forum. Cars are being traded in and mods are being sold for a fraction of the new cost. My exhaust cost me $800 in total (the headers and intake came with my first 997, and the cats (AWE) were purchased used on eBay).

I don't think that I will ever flash my ECU or add a Plenum. I also wouldn't buy an intake, as I don't feel it adds anything to the equation. Porsche makes some pretty good stuff.

Just my 2 cents.

 

Any particular reason why you don`t trust into ECU adjustments?

 

$1100 for 10 hp, not worth it. Spend the money on DE's, tires, or wine. I have had 4 cars flashed since 2002, 2 turbo's and 2 NA's, with turbo's it is awesome, with NA's it is a waste of $. Besides if you are going the SC route you need a custom program, so it is money you can never recover.

 

I have long term evil plans anyway, so just paid vivid Dan for softronic hack. It will be handy to have.

Will probably drive to same local dyno to look at (absence of) changes after re-flash, if time permits.