I went down a similar path but I must admit, I needed a little more of an experience so I did splurge a bit on the full Kline Inconel system - not for the performance but more for the sound as the TT leaves much to be desired. It just adds to that experience and it might bring you a little closer to how the GT3 sounded (sans the additional 2k revs)

 

Sweet!! I actually have thought about adding an exhaust system. Don't know if you gain any power but it sure sounds awesome! I wouldn't have any concerns about compromising reliability either.

 

There is no compromise of quality when it comes to a Kline system. I think I read somewhere that the system takes 30 hours to put together?
This is the one exhaust on the market that's quiet at low RPM's but howl's up top; a perfect compromise for anyone that wants the best of both worlds.

 

I maxed out front camber at -1.6 and rear at 2.7. No plates or control arms. That basically maintained the stock recommended factory max negative camber variance of 1 degree between front and rear, i.e -2 rear and -1 front. So retained stock F/R camber variance with a touch more negative overall. I was concerned about understeer but the car sticks!

 

I’ve put about 5k on my car post stage 2 tune then another 3000 miles on mine since getting the full ByDesign treatment before his latest iteration.

my car is set currently at about 916 whp and 750-ish torque.

and almost all those 3000 miles was me driving it like I stole it pushing 750 torque through the drivetrain; every time I sit in the seat I do a 9 second quarter mile in it and 5 to 15 launch control launches...and I’ve driven it from SoCal to SanFran and back several times, cruising at 85 to 100 mph all the way there and back with random hard pulls dozens of times there and back.

and she runs perrrrrrfect whether I’m in stop and go traffic for hours or giving it the full beans

 

Steven, I've seen your car discussed in other threads also and it looks to be truly amazing...congrats! Do you by chance have a selectable tune done to specifically handle road course conditions?

I can't help but recall some track days and be reminded of the reliability difference between many high horsepower builds for the street when put on the road course. It's just a whole other world of demands, but with enough upgraded parts and expertise I'm sure there are some wicked builds out there!.

 

for road course duty; or hard long canyon runs during COVID, I put it in setting A which is pump gas without meth, in that setting we’ll leave a softer throttle response too as 700 torque is a lot for my non-professional driver self.

As far as reliability on a road course, we upgraded the inter coolers and did a lot of stuff to help keep the system cool under duress.

it’s more about drivability on curvy road courses, with this much power you simply cannot mash the gas peddle to the floor as soon as you come off an apex lol

but

You gain pace so unbelievably quickly when you do hit full WOT that you can still run faster times despite getting on full throttle a bit later.

you just have to drive the car a bit different at 900 whp and 700+ torque

i have no doubt that with the tires and DSC and lowering springs and alignment etc that I have on there right now, plus all that power, that the same professional driver would get around a road course as fast or faster in my heavier less aerodynamic convertible street car than the same very skilled driver would get around the course in a stock GT2 RS with the same tires in a 30 minute HPDE run....and in a straight line very few road legal cars in the world are faster.

Also, the progenitor to my kit, it’s R&D proving grounds, was a crazy baddass world beating PIKES PEAK car so the whole kit was vetted through one of the most grueling races in the world.

Frankly these kits aren’t cheap, you can get fast relatively cheaply without reliability, you can get reliable but not fast for less money too...but to get fast and reliable there is no way around it you have to spend money, but it worth it and ultimately costs less money over time to do it right.

 

Outstanding commitment and build by the sounds of it! Congrats again. Enjoy!

 

at half second at these speeds is like 15 cars lengths or something like that.

i

 

According to car and driver, they measured the stock 2019 turbo s at 10.7 @ 130mph, which is 190.667 feet per second, or approximately 12.97 car (TTs) lengths per second.



Steven’s uber modded TTs will destroy air molecules and warp space and time considerably more efficiently…

 

😂😂😂🤙🏼

I stand corrected..so let’s call it 6 car lengths fir a half second, in real life, seeing another car pull ahead if you by 6 car lengths in a 1/4 mile race is still a pretty demoralizing gap of defeat, certainly not insignificant lol

broken down that way though:





Thats was on the street, literally just pulled over on the side of the highway and gunned it when there was a gap in cars...on a track that would be a 1.5 sec 60’ so that time is closer to 9.56

so I spent roughly $50k to gain about 14.5 car lengths on my own car over a 1/4 mile?....to each his own but worth it to me lol

(mine is a 991.1 Cabriolet, in stock form probably the slowest variant of all the 991 TTS’s)

 

Still. Bloody. FAST...

 

That was for a 991.2 TTS. The 991.2 TTSs trap ~130 stock. The 991.1 TTSs trap 124~125 stock.

 

At 147.74mph you are running at 216.68 feet per second, or 14.74 car lengths per second...

That is almost five car lengths (TTs) over stock at the finish line...

 

okay I need coffee and a shower before I start doing basic math 😂😂😂