Not on stock turbos whatever Cobb or anyone else try to pass off as reality. You might be lucky and register 650 bhp for a split second in a third gear pull on a dyno but no way stock turbos can hold that power all the way to 6500 rpm in 4th, 5th, 6th gear just no chance. I thought everyone knew this? We've been discussing how difficult VTG tuning is for 8 years now and what I am saying is old news.

If you mod the stock turbos with motorsport bearings, billet wheel, and larger hot side then you should see about 615hp but thats about the max even with modified stock turbos.

On completely stock turbos you can get around 550bhp which is still a massive improvement.

I'm running circa 650 PS but needed a similar set up to GT2 RS to get there as I wanted to stick with VTGs which my tuner isn't a fan of. i.e. hybrid GT2 turbos with motorsport bearings, billet wheels and larger hotside, GT2 RS intercoolers, free flowing panel filter, larger Y-Pipe, IPD Plenum and larger Throttle Body, Sach clutch, LWFW, and Europipe stage 2 exhaust.

Heres a link to a car with the same package as mine performing at VMAX 200. Scalps some pretty quick cars. A car with stock turbos would hit brick wall at 150 mph. As you can see from the vid the GT2 turbos really come into their own above 150 mph in 5th and 6th gear. The package is called 9e 28 as it gets a 997 turbo 0-300kph in well under 28 seconds. Stock car is 40 secs.

 

Hmmmm....I am using the turbo s as my bench not a regular turbo. On bbi's website if you add up the hp gains from all the components I listed, it's around 650 crank on a turbo S. Maybe your confusing the 650 with wheel hp.

 

Yes gen 2 turbo S different all together but still difficult to get more than 580bhp on stock turbos. Seems much quicker and more like 650 bhp because of PDK being so rapid. Interestingly the limit for PDK is about 630bhp before it lunches itself.

 

You sure? I think you may need to do some more research. BBI consistently gets to 650 on stock turbos. They don't change turbos till over that.


Watch this.

 

A car standing still with the tuner claiming 650bhp? Okay my car has 750bhp. See what I mean? Interesting he mentions PDK as an issue and having to be careful that they do not break it. Lets see that car on a dragstrip recording 0-300 then I'll believe it. Nice piece of kit though.

 

Much better vid of BBI car here. Exhaust sounds very nice indeed. Still think power claims may be a tiny bit optimistic but looks a v.nice package.

 

Hmmm...interesting...my dealer did the 30K & 40K maintenance to CPO my car (1,000 miles ago)...plugs & filter were changed. But I am curious about why do the coils need to be changed? What problem do they cause as I have not really researched this (first time I heard)? Is this only a problem when tuning? Thanks...

 

Coils will develop cracks in their plastic housing over time and will eventually fail.

 

I read that the older the coil packs get the longer it takes to charge up to provide a spark, so it will tend to cause misfires, especially at higher rpm range.

 

Huh...had not heard this...is this a design flaw and would this be covered by my CPO on the stock coils?

Interesting...So is the answer aftermarket coils?

 

bbi does some of the coolest exhausts, start there, wait a few days and the do the ecu

 

MrVeeman,

Congrats on the new purchase! The 997 Turbo is a perfect starting platform to make some serious power.

Since you are local to the LA area - feel free to come by our shop and check it out :

https://www.6speedonline.com/forums/...torsports.html

http://www.yelp.com/biz/house-automo...epair-pasadena

It's always a treat to have local enthusiasts come by and share in what we do on an everyday basis, we've been working with P-Cars in the LA region for good number of years now it's in our blood!

I also recommend what the others have mentioned and get the car checked out before doing any drastic power upgrades. I know you said it was looked at by the dealer a few months ago, but I'd like to go ahead and offer you a complimentary inspection of your car if you ever want to stop by

And when you are ready - we offer all the major manufacturers for performance upgrades and can provide professional installation as well as complimentary flat bed towing service to and from your residence for any services/maintenance/installs you decide to have done.

For now, enjoy the new car!

- Jason

 

Everyone has their opinions, and quite a few vendors are chiming in too.

I didn't see if you mentioned if the car is a 997.1 or 997.2? Forgive me if I missed it as I'm reading on my phone. The below applies to a 997.1.

The first thing you should do is get a flash tune. Cobb is the most flexible, EPL has the most features, and Protomotive should be mentioned as well.

BBI is local to you and they use Cobb, that should be a no-brainer. Between Mitch at Cobb and BBI you will never have a problem with the tuning no matter what mods you throw at the car in the future. That is really the problem in the Porsche tuning world, all the vendors want to charge you again for a small tweak to the tune every time you change something. 99 percent of the time they are (almost) renaming a file they sent someone else.

After that you should get an exhaust and 997.2 intercoolers. Given the proximity BBI should be a no brainer again for the exhaust. You can also pick up turbo inlet pipes from Pro Tuning Freaks which will really help once you start making more power.

At this point your factory clutch is probably about done. Unless you are going for a built engine and 800+ wheel horsepower the best way to go is the Sachs (OEM clutch vendor) "2.5" which uses the pressure plate part number ending in 764, and a OEM disc. People have been running the GT3RS 4.0 disc with good success recently.

If you are still looking for more power within the stock engine the best VTG upgrade out there is the Champion 68mm turbo upgrade. I believe BBI has also done these on several cars.

Beyond that things get a little hazy. Gasoline or E85? Stock engine or upgraded engine internals? It also gets expensive fast. Keep in mind there are a lot of upgrades available that are expensive and won't do a lot for the performance of the car.

For example, people talk about how outrageous Porsche parts are from the dealer. You can buy a factory Y Pipe for about $250. The IPD Y-Pipe which is good for about 10hp on a 700whp car? That's a cool $1,000 or about $100/hp. Considering a flash is good for 50-75hp for $1800 (in the case of a Cobb Access Port) you can do the math on where to start.

Hope this helps.

 

I wonder can anyone verify from experience how much hp will be added on a turbo or turbo s for the IBD y pipe, plenum, Cobb tune, and bbi inconel headers?

Also can the car stock everything else like the PDK handle this power? Or maybe it is just worth it to do a tune and call it a day.

 

I am doing coils and plugs right now actually. The deal is with more boost most everyone recommends gapping the spark plugs tighter.

The consensus is around .025" gap, which in the world of spark plugs isn't SUPER tight, but it's getting there. All things being equal a spark plug will live longer at a wider gap, so you are shortening the lifespan of the spark plug by gapping it tightly.

The reason you want to do coils is twofold - with a hotter aftermarket coil you can keep the plug gap to something more reasonable (.031-.035?), get more life out of it, and not have issues with misfires.

Secondly, it is a stupid amount of labor to change the spark plugs in these cars. You don't want to do this job often and it can run $1000 in labor alone to do it. So if you are going to be in there, best to have them done at the same time. You can stick with the factory coils for quite a while. EvoMS and BBI start recommending upgrading them around 650-700whp.