Upgrading stock to 700+ HP
#17
11-27-2015, 04:51 PM
Companies are in the business of selling tunes so HP figures get thrown around. The higher the better.
I've never even seen an Vtg 65 or 63.5 mm compressor made 600 whp on pump gas. Not even on meth and that's with 5" Ics , 3" exhaust , y pipe , intake piping and even on ms 109 with race gas file. 560 Awd mustard. Mind you a stock one is 386 Awd on a mustang.
The gt2 hybrid route is a different animal but it also costs probably $12k just for the turbos with the upgrade.
I've seen independent dynos from 3 tops tuners with all these both ons including mine of course. In the end , the true hp numbers were a lot less less then marketed. The Vtg compressors side is tiny. Ido what you put on the front end. If the turbine can't support it your not going to make power. Everyone behind the scenes knows this.
I've seen logs too. 1.45 bar with 18 deg timing in mid range. Still never hit 600 whp. Unless someone has some magical sauce, it's not going to happen.
I'm not getting in dyno wars. In the end it's about performance. The black dyno that is.
Markski
I've never even seen an Vtg 65 or 63.5 mm compressor made 600 whp on pump gas. Not even on meth and that's with 5" Ics , 3" exhaust , y pipe , intake piping and even on ms 109 with race gas file. 560 Awd mustard. Mind you a stock one is 386 Awd on a mustang.
The gt2 hybrid route is a different animal but it also costs probably $12k just for the turbos with the upgrade.
I've seen independent dynos from 3 tops tuners with all these both ons including mine of course. In the end , the true hp numbers were a lot less less then marketed. The Vtg compressors side is tiny. Ido what you put on the front end. If the turbine can't support it your not going to make power. Everyone behind the scenes knows this.
I've seen logs too. 1.45 bar with 18 deg timing in mid range. Still never hit 600 whp. Unless someone has some magical sauce, it's not going to happen.
I'm not getting in dyno wars. In the end it's about performance. The black dyno that is.
Markski
This is so true!!!
#19
11-27-2015, 04:53 PM
Nope.
I got something oldschool Jap and I love it.
http://www.gtr.co.uk/forum/406625-so...y-r34-gtr.html
But lets not make this thread about me
#21
11-27-2015, 04:58 PM
Nope.
I got something oldschool Jap and I love it.
http://www.gtr.co.uk/forum/406625-so...y-r34-gtr.html
But lets not make this thread about me
I got something oldschool Jap and I love it.
http://www.gtr.co.uk/forum/406625-so...y-r34-gtr.html
But lets not make this thread about me
#24
11-27-2015, 05:08 PM
Join Date: May 2015
Location: Seattle, WA
Posts: 45
Rep Power: 17 
Very interesting, thank you for all this great info.
So based on that, it looks like it might be possible to take the car from around 560 crank hp with Cobb Stage 2 (and speedtech exhaust) to around 650 crank hp with the rest of the bolt on mods (custom tune, intercoolers, E85 with injectors). Is that correct or am I dreaming?
So based on that, it looks like it might be possible to take the car from around 560 crank hp with Cobb Stage 2 (and speedtech exhaust) to around 650 crank hp with the rest of the bolt on mods (custom tune, intercoolers, E85 with injectors). Is that correct or am I dreaming?
#25
11-27-2015, 05:56 PM
Very interesting, thank you for all this great info. So based on that, it looks like it might be possible to take the car from around 560 crank hp with Cobb Stage 2 (and speedtech exhaust) to around 650 crank hp with the rest of the bolt on mods (custom tune, intercoolers, E85 with injectors). Is that correct or am I dreaming?
Coming from a stock tt...I dont think you need anything more than cobb/exhaust/intercoolers. Now if you want to get "wild" injectors for e85 (and of course a sachs 2.5 clutch if 6mt).
I would start there, i think the performance difference from stock will surprise you. While you wait for install i would get the cobb burning asap as it is easy and transforms the car.
IF you get bored you can start looking at turbo swaps. You'll already have the injectors.
#26
11-27-2015, 07:40 PM
Registered User
Join Date: May 2010
Location: Brampton,Ontario,Canada
Posts: 1,601
Rep Power: 202
Out of all the packages you mentioned the Alpha 9 is by far the best option. Their package is a work of art and has a real turbo upgrade with their Alpha 28/30 that ditches the VTG's!
Get PTF (COBBS tuner) to tune that and you should be north of 700bhp on pump and 900bhp on race/E85!
On a side note a rewheeled VTG can be very potent and is still the best bang for the buck with the supporting mods!!
Get PTF (COBBS tuner) to tune that and you should be north of 700bhp on pump and 900bhp on race/E85!
On a side note a rewheeled VTG can be very potent and is still the best bang for the buck with the supporting mods!!
Hi, I'm starting to think about upgrading my stock 997TT. More power is always fun 
I don't race my car much (1-2 times a year for fun), so this is for recreational use mostly.
Found these packages:
* Porsche 997 Turbo FS-700 Supersport Turbo Package
* TPC Racing 775BLITZKRIEG Package- 997 Turbo
* EVOMS EVT750/EVT775R Signature Turbo Kit
* Alpha 9
* AWE TUNING 750R PERFORMANCE POWER PACKAGE
* BBI B8 Porsche 997 Power Package
Any experience with these? Any issues? How is durability?
How much aproximately would it cost to install these? I can't do it myself.
-Nick
I don't race my car much (1-2 times a year for fun), so this is for recreational use mostly.Found these packages:
* Porsche 997 Turbo FS-700 Supersport Turbo Package
* TPC Racing 775BLITZKRIEG Package- 997 Turbo
* EVOMS EVT750/EVT775R Signature Turbo Kit
* Alpha 9
* AWE TUNING 750R PERFORMANCE POWER PACKAGE
* BBI B8 Porsche 997 Power Package
Any experience with these? Any issues? How is durability?
How much aproximately would it cost to install these? I can't do it myself.
-Nick
#27
11-28-2015, 02:38 AM
Very interesting, thank you for all this great info.
So based on that, it looks like it might be possible to take the car from around 560 crank hp with Cobb Stage 2 (and speedtech exhaust) to around 650 crank hp with the rest of the bolt on mods (custom tune, intercoolers, E85 with injectors). Is that correct or am I dreaming?
So based on that, it looks like it might be possible to take the car from around 560 crank hp with Cobb Stage 2 (and speedtech exhaust) to around 650 crank hp with the rest of the bolt on mods (custom tune, intercoolers, E85 with injectors). Is that correct or am I dreaming?
To get to 700bhp swap out VTGS to Alfa or Garrett set up and you'll get there reliably on pump gas.
#28
11-28-2015, 11:13 AM
Join Date: May 2015
Location: Seattle, WA
Posts: 45
Rep Power: 17
There is so much conflicting information out there about the complete kits and statements like these make me pause for a long time - this is from one of the kits:
"DISCLAIMER: Due to the extreme power levels provided by these upgrade kits, Fabspeed Motorsport is not responsible or liable for any damages - to person or property - sustained to or by the upgraded vehicle. All modifications are made at the buyer’s risk."
9e_28, I have read a few posts here that people run E85 with 1000 injectors reliably in their cars, but are you saying that even going that way would push VTGs beyond their limit?
"DISCLAIMER: Due to the extreme power levels provided by these upgrade kits, Fabspeed Motorsport is not responsible or liable for any damages - to person or property - sustained to or by the upgraded vehicle. All modifications are made at the buyer’s risk."
9e_28, I have read a few posts here that people run E85 with 1000 injectors reliably in their cars, but are you saying that even going that way would push VTGs beyond their limit?
#29
11-28-2015, 11:23 AM
There is so much conflicting information out there about the complete kits and statements like these make me pause for a long time - this is from one of the kits:
"DISCLAIMER: Due to the extreme power levels provided by these upgrade kits, Fabspeed Motorsport is not responsible or liable for any damages - to person or property - sustained to or by the upgraded vehicle. All modifications are made at the buyer’s risk."
9e_28, I have read a few posts here that people run E85 with 1000 injectors reliably in their cars, but are you saying that even going that way would push VTGs beyond their limit?
"DISCLAIMER: Due to the extreme power levels provided by these upgrade kits, Fabspeed Motorsport is not responsible or liable for any damages - to person or property - sustained to or by the upgraded vehicle. All modifications are made at the buyer’s risk."
9e_28, I have read a few posts here that people run E85 with 1000 injectors reliably in their cars, but are you saying that even going that way would push VTGs beyond their limit?
If you know what you're doing regularly data log your car its not a problem with E85 and 1000 injectors but if you don't it can lead to catastrophic failures potentially - I wouldn't go nr it unless you know what ur up to and experienced - exhaust, tune and coolers plenty for now - see how you feel after these upgrade and then if you want more power have a look at your options again
#30
11-28-2015, 11:31 AM
There is lots of info and most of it is correct. It's the grey area, different use, miss-information and strong opinions and that make it hurt the head. Best advise is to select a reputable tuner/dealer and discuss your needs, budget and expectations. There are no guarantees even with just a tune but a good one will stand behind everything A-Z as will the suppliers that work with them. Give you confidence you need. I do and have. Remember it's supposed to fit and be fun. Not Stressful.
Cheers
Cheers
Last edited by SamboTT@ByDesign; 11-28-2015 at 11:34 AM.
