We plan to get out there in the coming months and see what it will do on a prepped surface.

 

Thanks for the results so far. One thing however I find very odd is you're only getting 540 WHP dyno for a TTS? That just doesn't sound right... it should be making atleast 600 at the wheel, since we know it makes more than the factory-rated 640hp at the crank (closer to 670-680).

 

We've dyno'd numerous 992 Turbo S' on our hub dyno and an AWD chassis dyno (another shop down the street), they've all made 540-560whp stock. We feel very confident about our numbers. Dynos do vary and there are a lot of variables. We try very hard to run under the same conditions as much as possible.

What we've found on the 992 is Porsche underrates the base Carrera, S/GTS are where they should be and the TTS seems to either suffer from more drivetrain loss or they're barely getting to that number. They have a lot of torque which might explain their 0-60 times. We've found that to be the case with the 991 generation as well. We roughly see between a 15-18% drivetrain loss. The Turbos seem closer to the 18% for some reason if you believe Porsche's numbers. They usually don't embellish so it's likely just drivetrain loss related. The comparison is more an attempt to show them on a relative basis. The ambient temps, DA, IATs, etc. might have some small variances based on the day we tested them. Florida does provide us pretty stable climate but we're still in the summer like weather pattern. The 992 Turbo S we did dyno last week so pretty similar climate.

 

I think the turbo S plot is slightly off. TQ and HP should cross at 5250 If I am not mistaken.

 

It does but because we export the data and use in a different software for better visualization, the software can only align data points on one axis. The plot might be slightly shifted as the dyno has an RPM pick up data point and a torque/HP pickup. Because of the small differences in the digits and the software trying to justify both data plots to the same axis, it comes out that way. There isn't a good way for us to adjust it because we only have so many samples of data per second to plot. Sorry, it's a bit complicated to convey but that is why you might see it look off on one of the runs. You can just imagine shifting the plot to the left or right slightly.

 

That's why using the real dyno tells the truth (the Earth). 1/4 time slips say much more than simply ET and they can't really lie.

 

I was able to road test the car today and it hauls! I'm hoping to get a dragy number with it next week (traveling this afternoon through Monday).

I think we're in a good spot to surpass the stock TTS we last tested. Here is our data:

992 Carrera (GTS Turbos & Competition Link Pipes):
0-60: 2.90
1/4: 10.70 @ 130.2

992 TTS (Stock):
0-60: 2.83
1/4: 10.48 @ 132.2

992 TTS (w/ ME S1):
0-60: 2.73
1/4: 10.18 @ 137.0

Our test strip isn't perfect, a smidge uphill, a bump or two and a small kink but it's nearby, safe and we can consistently run the same conditions. We'll never set any records, I promise! Considering the Project 992 Carrera is up about 80whp over the last time we ran it, I expect to be somewhere between the stock and tuned 992 TTS numbers. The 60ft times of the turbo really put it ahead but it would be nice to get a similar trap speed. I'll post some results when we have a chance to collect them.

- Jon

 

If the TTS is trapping over 130 it has more than 560 whp.

 

Feel free to dyno one.

 

do you have times for the 992 w/ GTS turbos and inter cooler and everything else you’ve added?

 

This shows 606 which makes sense for trap speeds of 132 mph.

 

Amazing. Your first post on this forum is to question the info offered by a site sponsor who has well known expertise in the area of what is being presented.

 

in his defense, it does look unusual. They are presenting data and there is nothing wrong with clarifying the data presented IMO. I don’t think I or anyone else is doubting them, just trying to better understand.

 

ME's dyno reads higher than ours, we've taken cars down there for tuning on their dyno too. We don't get too hung up in the numbers, mostly looking at deltas on our end. The S4 Carrera vs stock TTS plot was more just a quick comparison as the goal of this Project was to see if we could take a base Carrera and make it faster than a stock 992 TTS.

Just FYI, here were two tests we've done recently on our Hub Dyno and an AWD Linked DynoJet (Real Street Performance's Dyno) with a TTS. The tuned 992 TTS picks up considerable power with tuning. I want to focus on the Carrera build in this thread but we're always happy to share data and info/details. We work hard to hold our testing protocols consistent. For us, the dyno results help us validate manufacturer claims and help advise clients who have different needs. We're not in the business of trying to break records or hit particular numbers. Same with our Dragy testing, it's about holding the testing consistent and seeing what it would do for any Joe at their local stop light. We're vendor agnostic but have a lot of experience with different set-ups and over time we test/learn what works best for particular situations.

 

I own a couple of V8 cars and one is supercharged. After 600hp it’s hard to get them to hook up with street tires. I’m running PS4s on the 700rwhp car and you have to be careful laying into it. The tires on this cars aren’t 911 wide so it isn’t apples to apples but I’m guessing there is a sweet spot for the 911 with rear wheel drive only. My guess is it’s GTS turbos fitted and tuned, curious to what others think who have access to the upgrades.

Really enjoy this thread, thanks.