Originally Posted by longboarder

I see.


Well, I guess you could find a negative 1% slope, put some 91 octane gas and try doing some 100-200kph and 60-130mph runs on a vBox. I did it on a pretty warm morning although maybe not as warm as in PR.


Here's my results in those conditions:


https://www.6speedonline.com/forums/...0-6-579-a.html


Based on the results of my recent Shift Sector AA5 airstrip races running cars like Anthony's 997.1 Swtizer E900 and the BMS single turbo BMW 135i with verified vBox 60-130's in the 5.0 to 5.9 sec range, I believe that I can likely do a high-5 with race gas and a negative slope approaching 3%.

Originally Posted by dvpouldar26

No independent dynos have been done on 997.2's to see if intercooler's make power on their own. Rather, intercoolers let you maximize what you have... you don't hit the flow and IAT bottleneck that you hit with stock intercoolers. In addition, if you want to run higher boost, stock plastic end-tanks are known to crack or blow.

Dodson has come up with upgrades clutch packs for the porsche PDK recently. I don't think many know about it but it would be interesting to see where things go from now if pdk limits become a non-issue using their clutch packs. Of another note, Longboarder since I know that you still own your m3, Dodson just came out with DCT clutches for the m3 and f1x m5/m6. It will be interesting to see where things go with those cars if this upgrade is successful as well (for the bigger built motor builds).

Originally Posted by webcarconnection

But I have an idea... What stock car run you even or very close? I can run the same car here and show a vid. Just for fun, not to bash Champion or GIAC

Originally Posted by dvpouldar26

No independent dynos have been done on 997.2's to see if intercooler's make power on their own. Rather, intercoolers let you maximize what you have... you don't hit the flow and IAT bottleneck that you hit with stock intercoolers. In addition, if you want to run higher boost, stock plastic end-tanks are known to crack or blow.

Dodson has come up with upgrades clutch packs for the porsche PDK recently. I don't think many know about it but it would be interesting to see where things go from now if pdk limits become a non-issue using their clutch packs. Of another note, Longboarder since I know that you still own your m3, Dodson just came out with DCT clutches for the m3 and f1x m5/m6. It will be interesting to see where things go with those cars if this upgrade is successful as well (for the bigger built motor builds).

Originally Posted by longboarder

Thx yeah I have been following the thread started by VT3M33. Not interested in building my M3. However a built PDK to handle 1,000+ HP/TQ would be fantastic. Just need someone like BBi or Champion to figure out the DI fueling limitation.

Originally Posted by longboarder

I haven't run any stock cars with my current setup (9-second file).


With just the tune and plenum on the 91 octane file (at the Shift Sector Big Willow event), I did run a 458 Italia and a McLaren. Why don't you run those on pump gas and vid them and we can compare the results.

Originally Posted by dvpouldar26

I agree, there's more potential in building a porsche. As for dfi fueling, BBI's engine builder told me they are working on a solution using port injection. They will be adding port injectiors to help with the additionally needed fuel and intake port carbon buildup issues all these DI motors are having. It's only needed for high loads where the HPFP starts to drop off. He also told me the oem pistons are actually quite stout and that the rods are the weak link. They have already done several 4.0L 997.2 turbo DFI builds, all with 6speeds though.

Originally Posted by webcarconnection

Did a Italia with the old tune too and was bad for him hehehe... I will vid all races that I can and share it with the forum, don't worry

Originally Posted by kinkkink

On my 2010 TT pdk I installed Champion Motorsport intercoolers and my 60-130 times dropped .3 seconds. No changes to my tune, made the runs the same days a few hours later. My current mods at the time.. Europipe exhaust, plenum, y pipe and ES motor tune.

Originally Posted by webcarconnection

Thanks for that info, .3 on 60-130 its some improvement

Originally Posted by dvpouldar26

In reality a 0.3 sec difference in 60-130 could be due to a difference in D/A and/or slope. Unless you tested on the same section of road with the same slope, with the same D/A and similar conditions, then it's not a fair comparison imo.

Originally Posted by dvpouldar26

They have already done several 4.0L 997.2 turbo DFI builds, all with 6speeds though.

Originally Posted by Mit_Boost

Umm..... The only 997.2s that I know came with 6MTs were GT2s + GT3s, and both were still using the Mezger motor I'm not doubting the built motors, just not sure about the 6MT part.


Another way to raise power and avoid the fueling problem is raise the compression on the stock displacement, you should be able to make more power will running less timing + boost. The obvious problem is tuning to avoid knock on pump gas.