Hello everyone,
As I said, I'm searching for a wider powerband setup because I will use the car a few times of year, especially for hard track abuse.
I have installed an ADE 6266 since some years ago, when I used the car in a entirely different way of my current purposes. I'm not seeing full boost until 4k rpm or a bit more, so a powerband from 4 to 7k rpm it's not the best on slow turns and trying to deal exit them with very low power or with a lower gear at very high rpm. So my goal would be 500whp on straight 98RON (equivalent to 93oct there in US) in a setup that reach full boost at 3k with a decent top end, and at the same time trying to avoid undesirable choking effects at high rpm of a smaller turbo setup.
After doing some research, this is the best options I think that I should consider, but I would appreciate if someone post his opinion or propose another good options:
- Speedtech with GTX3071 (T3 divided; 0.83AR).
This is my one of my favourite options. Speedtech is very good kit with unbeatable price. Install seems to be pretty straightforward and they don't lock to buy the whole kit, so I can re-use my Tial wastegate and buy the turbo in EU to avoid pay more than necessary customs fees.
Regarding from the Turbo, user r0nd3L posted a log with this same setup and reach full boost (19 psi) at 3150 rpm. This is pretty at the point I want the boost threshold, but I don't sure if the top end would be enough to prevent to go beyond the choke line and produce the undesirable effects of a massive heat.
- Speedtech with GTX3576 (T3 divided; 0.83AR).
This is another good option. It's a little the opposite of the previous option, worse spool but better top end. User nahor posted a log reaching full boost (19 psi) approximately at 3.5k rpm with high ethanol blend. Spool is a little above that I like, but probably with tune changes it could spool sooner, and I'm pretty sure won't be beyond the choke line at the top end, so it's a more reliable option than 3071.
- Doc Race bottom mount with PTE 5862 gen2 BB (1.05A/R).
It's not my favourite option because is not a divided manifold and they lock to buy their whole kit and a Precision Turbo. I don't rely much on a non-water cooled turbo for HPDE. Anyway, it's a considerable option.
I don't have the idea where the boost threshold would be with this setup, but if my 6266 BB on a tubular manifold reach full boost at 4k rpm, this option will spool quicker definitely.
CES is a great kit but paying additional 2 grand for a trimmed piece of metal is out of my budget.
- RB Game finishers High Flow.
This is another of my favourite options, in a opposite way of the others as it's a twin setup. 650-700whp capable setup with a great spool as any twin setup. I seen few dynos where they are making max torque at 3k rpm approximately. I think that 500whp will not making them pushing hard and generating too much heat. It's the only Twin setup I consider to buy because although there are other twin options with similar or even higher whp capability they have a large history of reliability complaints.
- Keep my ADE Kit lowering the AR of my 6266 or swap a smaller turbo.
As a said above, not the best for track purposes because of the narrow powerband (as the most of single kits).
I think that I could pick some boost with a few hundred less rpm if I switch my 0.84AR turbine housing to a 0.63 AR that I seen is available for a 6266 BB. Another option is directly to switch to a smaller turbo, but at the end, is a heavy tubular undivided T4 manifold with a turbo in a very low position that has poor gravity for oil drainage, less than ideal for track racing.
As I said, any input would highly appreciated.
Regards
As I said, I'm searching for a wider powerband setup because I will use the car a few times of year, especially for hard track abuse.
I have installed an ADE 6266 since some years ago, when I used the car in a entirely different way of my current purposes. I'm not seeing full boost until 4k rpm or a bit more, so a powerband from 4 to 7k rpm it's not the best on slow turns and trying to deal exit them with very low power or with a lower gear at very high rpm. So my goal would be 500whp on straight 98RON (equivalent to 93oct there in US) in a setup that reach full boost at 3k with a decent top end, and at the same time trying to avoid undesirable choking effects at high rpm of a smaller turbo setup.
After doing some research, this is the best options I think that I should consider, but I would appreciate if someone post his opinion or propose another good options:
- Speedtech with GTX3071 (T3 divided; 0.83AR).
This is my one of my favourite options. Speedtech is very good kit with unbeatable price. Install seems to be pretty straightforward and they don't lock to buy the whole kit, so I can re-use my Tial wastegate and buy the turbo in EU to avoid pay more than necessary customs fees.
Regarding from the Turbo, user r0nd3L posted a log with this same setup and reach full boost (19 psi) at 3150 rpm. This is pretty at the point I want the boost threshold, but I don't sure if the top end would be enough to prevent to go beyond the choke line and produce the undesirable effects of a massive heat.
- Speedtech with GTX3576 (T3 divided; 0.83AR).
This is another good option. It's a little the opposite of the previous option, worse spool but better top end. User nahor posted a log reaching full boost (19 psi) approximately at 3.5k rpm with high ethanol blend. Spool is a little above that I like, but probably with tune changes it could spool sooner, and I'm pretty sure won't be beyond the choke line at the top end, so it's a more reliable option than 3071.
- Doc Race bottom mount with PTE 5862 gen2 BB (1.05A/R).
It's not my favourite option because is not a divided manifold and they lock to buy their whole kit and a Precision Turbo. I don't rely much on a non-water cooled turbo for HPDE. Anyway, it's a considerable option.
I don't have the idea where the boost threshold would be with this setup, but if my 6266 BB on a tubular manifold reach full boost at 4k rpm, this option will spool quicker definitely.
CES is a great kit but paying additional 2 grand for a trimmed piece of metal is out of my budget.
- RB Game finishers High Flow.
This is another of my favourite options, in a opposite way of the others as it's a twin setup. 650-700whp capable setup with a great spool as any twin setup. I seen few dynos where they are making max torque at 3k rpm approximately. I think that 500whp will not making them pushing hard and generating too much heat. It's the only Twin setup I consider to buy because although there are other twin options with similar or even higher whp capability they have a large history of reliability complaints.
- Keep my ADE Kit lowering the AR of my 6266 or swap a smaller turbo.
As a said above, not the best for track purposes because of the narrow powerband (as the most of single kits).
I think that I could pick some boost with a few hundred less rpm if I switch my 0.84AR turbine housing to a 0.63 AR that I seen is available for a 6266 BB. Another option is directly to switch to a smaller turbo, but at the end, is a heavy tubular undivided T4 manifold with a turbo in a very low position that has poor gravity for oil drainage, less than ideal for track racing.
As I said, any input would highly appreciated.
Regards