Can you give me more details on #4? What parts, power gains? Faster spool up?

 

I think what's described is in this thread

https://www.6speedonline.com/forums/...all-997tt.html


http://www.do88.se/en/artiklar/hose-...che/index.html

 

Yes ...Sure...Cam99 Has it listed here now. The intake ducts essentially let the turbos suck in more air . The factory ones are hard plastic, and very narrow..These just open it up to breathe better.

On the stuff not to waste your time/money on...That will get a lot of folks here all ruffled up. On those I suggest read a lot and make your own decision. Most of those items have a "feel better" report as I would likely say after spending as much as some of them cost.

They may have a few report spattered around that show some minor gain but many do not see nay and some have actually removed them for better performance....

Hope that answered your question.

DC

 

Just looking at the stock hose vs the do88 intake hose, I feel the intake hose upgrade would yield more significant gains than an intercooler upgrade?

 

Well....They bring in more cool air, but without the intercoolers to keep it cooled down you are just burning more hot air. Intake air temps make a huge difference on these, or any cars.

So....Both of them work together for synergy. They aren't mutually exclusive.

DC

 

100% correct....more cool air more power..intercoolers gain 0 to minimal power when oa temps are cool....then again I hot dynod my car from 1-4 th gear multiple times back to back to back...with ams coolers and h.p drop off was only about 12-18 hp.....that's amazing..intercoolers are big plus on these cars as you stated...

 

First thing to do is to not go overboard changing things and do things in stages as its too easy to do things too fast, throw expensive hardware on the car that isn't necessary for the power goals you may settle on and be content with. Our recommended order on a 997.1 car with oem vtg turbos and pump gas would be:

1) tune, and optionally a custom tune
2) exhaust
3) intercoolers

With a custom tune from us we'd update your map settings as you add mods to the car and review logs to ensure everything is running as well as it can and we can do it remotely over email or locally on a dyno.

For E85 you would need injectors and a retune.

With a 6MT car plan on a clutch if doing a custom tune with an exhaust. With canned tunes you'll probably be ok with the oem clutch in place for a bit.

Plenum is easy and intake pipes are a nice touch to round things off for oem VTGs.

 

Sounds like a pretty solid plan...only thing I would add is Platinum spark plugs and possibly coils?

 

I'm not sure I'd be touching the engine/tranny mounts for a car with street duty at all. If its only a weekend racer sure, tighten things up a little.

Plugs and coils depending on mileage but with a new purchase I'd definitely swap at least the plugs and possibly coils as they're pretty cheap and no reason not to start fresh since you're already in there.

 

There are a number of dyno tested runs and actual time tested results done after swapping Plenum and/or Y-pipe. These gains are not only throughout the entire power band, but have been proven during real life roll race testing. What information do you have that you have concluded upgrading plenum/y-pipe are not worthwhile. Also, on that same token, what information do you have that intake ducts have any effect on performance. I have not seen any case where intake ducts were modified unless intercoolers were packaged with it for proper fit (AMS). In fact, Champion Motorsports concluded that the stock intake ducting is near perfect for directing air straight to the intercoolers. I think most people on the boards and Tuners alike underestimate the raw engineering and thought process that goes into these cars. Porsche goes through thousands of hours logged testing out every nuance on these cars for 2 reasons: 1. Effeciency and 2. Reliability. Don't just go around swapping out parts unless there are real Dyno or track tests done to prove gains.

 

Not here to sell or convince you on anything. Form your own opinions and read (and filter) information here and elsewhere. And then do what you like.

Everyone has an opinion, and can find data to support it. Not my job to educate you.

DC

 

I actually am not looking for any education from you. I was commenting on your advice to a fellow member on information you apparently don't have any supporting evidence on (or haven't shown any for that matter). It's one thing to advise someone for something, but if you're going to advise against, you probably should have supporting evidence. These boards are muddled with contradicting information, and it doesn't help if people just throw out misinformation and not have anything to back it up. One of the reasons why people post regarding this very thread on how to move forward with mods for the most cost effective solutions.

 

I actually have plenty, and shared my "opinion" which is what the OP asked for. I am not interested, however, in wasting my time trying to prove anything to you. Whether I post additional information sources or not, does not change facts.

We can just defer to your expertise on this subject, since you know for a fact that your information is correct, and unless I post a littanty of sources, mine are incorrect. And quoting vendors' sales Ads are not really solid evidence of anything BTW.

You are entitled to your opinon, and that is what it is.

 

Here's my list based on "bang for buck"

1. Full Exhaust (if you want performance gains, you must go with either high flow cats or catless, although catless may be illegal in your jurisdiction). For just sound go with Sharkwerks exhaust it's the best price for what you get, although I'm skeptical that there are any performance gains whatsoever.
2. Tune - I'd definitely go with Cobb given the flexibility and options from various tuners that you can choose from. There are also OTS maps that you can use that are preloaded. Keep in mind the more engine mods you do, it's highly likely to have the car custom Dyno tuned to get the most out of your mods, and efficiency.
3. IPD Plenum/Y-pipe - There are proven gains on this, mainly Longboarder's test that he did (this was just the Y-pipe) that you can find here: 4. Intercoolers - I'd go with either Champion as they have a long history with their product with excellent feedback from customers; or I'd go with AMS (more expensive), or TPC racing's Blitzkreig intercoolers (5" core). In the summer months, you must have something that prevents your car from heat soaking, especially after running higher boost temperatures. Here is the ones from Champion TPC http://www.tpcracing.com/tpcracing-b...-997turbo.html
5. I'd go with GMG or Techart springs with TPC's DSC module and get a set of GT3 lower control arms, adjustable toe links, and do a GT3 Spec alignment.



Hope this helps!

 

No reason to get bent out of shape I simply asked if you had any evidence of why you believe intake ducts are restricted on these cars, and if you had anything to support why you advised not to go with IPD/Plenum. I don't think opinion has much of a gauge on a truthful answer. It would be like me asking you what the color of the sky was, and you said yellow because that it your opinion. Sorry to request info. I'm fairly new to this board. Never realized asking for supporting facts would yield such a response. I can promise you on GT-R forums you'd never get that kind of response.