i am confused on what to go with i have a 98 gt 4.6 sohc totally redone, i am looking for about 800-900 hp i am wondering if anyone knows if the twin turbo will make that much of a differnce. compared to the single turbo system?? either way im goin with the biggest wastegate and blow off valve and a 900 hp intercooler. any tips or ideas would be greatly appricated or even any companies that you know of would make theese turbo systems please help
TWIN TURBO OR SINGLE TURBO??
- Thread starter djavenger
- Start date
Saleen201
Founding Member
crew_dawg16
New Member
If you want a twin turbo setup, look up the guys at hp performance out of Roswell, New Mexico. They have one of the best complete kits on the market. I think it goes for $6,000. www.turbochargedpower.com
FallenPhoenix
New Member
crew_dawg16
New Member
Yeah, if it's for show don't go with the hp performance kit. All you see is a pipe going into the fender, just like a densecharger CAI. Everything else is behind the front bumper 
wow talk about bad info.
First off, the reason you cant run twins in most NHRA and NMRA racing events is because dual power adders are illegal according to a lot of their rules.
Second,
Twins are better on a V style motor. A single turbo setup is better on a In-line motor. Twins are more efficient.
If you have the cash, get twins. It is more efficient and a better design. No need for a cross over pipe and you will see full boost like right NOW!
First off, the reason you cant run twins in most NHRA and NMRA racing events is because dual power adders are illegal according to a lot of their rules.
Second,
Twins are better on a V style motor. A single turbo setup is better on a In-line motor. Twins are more efficient.
If you have the cash, get twins. It is more efficient and a better design. No need for a cross over pipe and you will see full boost like right NOW!
Route666
Active Member
Are you positive about that efficiency thing mogs? Logic would tell me that half as many bearings should use less energy to spin.
Also, a bigger turbo provides a much bigger cross-sectional flow area to boundary length.
That is, that there is more (or the same as two turbos) air flow in the single, bigger turbo without as much boundary interference from the piping walls, which causes tubulence and wastes energy, by fluid friction.
EDIT: Having said that, my preference would be twins, I like symmetry, and better response is something I like over max power. Also, a 408W with suitable twin turbos would make as much power as I'd ever want, so no need for me to want a single... if it is better.
Also, a bigger turbo provides a much bigger cross-sectional flow area to boundary length.
That is, that there is more (or the same as two turbos) air flow in the single, bigger turbo without as much boundary interference from the piping walls, which causes tubulence and wastes energy, by fluid friction.
EDIT: Having said that, my preference would be twins, I like symmetry, and better response is something I like over max power. Also, a 408W with suitable twin turbos would make as much power as I'd ever want, so no need for me to want a single... if it is better.
Its not the turbos that are the problems. Its all the extra piping with a single kit that is less desirable compared to a twin setup.
In a perfect setup, you want the turbos close to the heads and right on the manifolds so you do not get any turbulence in the exhaust flow.
In a perfect setup, you want the turbos close to the heads and right on the manifolds so you do not get any turbulence in the exhaust flow.
FallenPhoenix
New Member
I'd think one larger turbo would be better for a pure drag car simply because a little lag would be good off the line. That being said I've never driven a rear wheel drive turbo car.
