why are some reasons some would chose a single VS a twin turbo set up, Or vice versa? what are the hp differences and what are the advantages or disadvantages over the other .. thank you in advance RD.

 

check out APS turbos....they give you quite the breakdown.

 

in terms of aps ST vs TT I chose the TT for the following reasons:
1 - TT comes with cast manifolds
2 - TT less turbo lag - though this may not be the case in the real world
3 - TT bolts up to stock exhaust location
4 - Power potential is higher with TT

If your in Cali, you definitely want something that bolts up to stock exhaust location as to keep you looking a bit more stock. The APS TT kit has a chance of becoming CARB exempt, where as their ST kit doesn't

 

https://my350z.com/forum/showthread....99#post1409099

 

I actually prefer singles, lag is nice to me. it makes the power more noticeable when it comes in. your accellerating and its bogging a little, then all of a sudden your like oh S$#&!

 

With the TT you have more WHP than the Single at the same PSI beside that both are A+ products for the Z

 

If you're leaving the motor stock TT is a waste of money. ST is cheaper initially and the install is easier cheaper. IMO, ST is a much better choice for people like me using their car as a daily driver with stock internals.

 

Why would a TT be a waste? A single could flow just as much as twins putting the same amount of stress on the stock internals.

 

Mine is a daily driver with stock internals!

 

You seem to have missed the point. Since they both do the amount of HP the stock motor will handle, why spend extra money for horsepower you can't even utilize with the TT?

 

Sorry to steal this thread but
-webcarconnection how many miles do you have on your turbos and have you had any
problems since install(like with stock internals and all)

 

So is mine (APS TT). Now 5 months and 5,000 miles (2 track days) and no problems (414 RWHP at 8psi, 91 octane)

 

Maybe once you feel the power you will want more. The TT will be more expensive at first, but when you end up selling you ST to buy a TT the ST will cost you a whole lot more. This happened to me, only I bought a s/c and 3 weeks later sold it....lost a couple grand between parts and labor.

 

ST vs. TT really just boils down to budget, time, and HP goals.

$2.5-3k extra for TT and install, and $6k for a motor buildup exceed my budget constraints. If I could afford to build my motor, buy a more expensive turbo kit, and do all the other stuff that goes along with that. Plus I would have to buy another car since I wouldn't have a DD anymore, then the single or twin question would be moot. I would go TT of course. (However if I had that much money, I wouldn't be driving a Z! )

For now the HP goal is only what the stock motor will take, and in the future will not exceed 550whp. The car is my daily driver, so I need an easy install over one weekend and a safe kit. Also, I need to stay around $6k, not the $9k the TT and install costs.

In other words ST is perfect for me.



BTW, are you building the motor Gman2004? Whether you're running the Vortech or Greddy TT you're going to have ~ the same hp on a stock motor. What was the point?

 

Even if you net the same hp with a s/c as a tt you will have more power through out the band with the tt and more tq.

And yes I am building my motor. It is currently at SGP becoming an Ultimate Short Block 500-530rwhp for me in the very near future!

 

Around 4000 NO problems at all

 

The Single Turbo is a great choice also... both will make a big smile on your face

 

The ST can also VERY EASILY be uprated by simply going to a bigger compressor section, or a complete new unit for 1/2 the cost of TT upgrade.
You MAY add a few hundred rpms to where boost kicks in, but it will pull longer and harder to redline...This is a much proven concept and is called a HYBRID turbo...many in use in Hondas and Toyota Mitsubishi cars...
The labor to change, and costs to do the same are MUCH less with the ST. Thats why I waited on the APS system, I wanted the choices this system gives me as well as the ultimate HP potential with their additional fueling in their Intake manifold setup.
There are PLENTY of 1000+ Toyotas etc using ST's.

 

The lag comment still gets me...There is honestly not any lag in either of the single turbo set ups. Where are TT kits making full boost? Cause I know my Turbonetics kit makes full boost at 3200 RPMs. Yes a FULL 8 PSI. So lag can be dropped from the topic all together. AS for power and performance BOTH single turbos are making more with out of the box tune then some tt kits out of the box. Greddy out of the box is what 355-365? PE is what 360-370? Turbonetics is making 380+ and APS is making pretty close to the same. And quite frankly the curve is not THAT much different. I myself got the Single turbo for quite a few reasons, principally I like the design of my kit, the power delivery, and it is the best bang for the buck F/I kit available.

 

One hugh drawback of the ST over the TT is that no ST kit is being CARB certed. For us poor slobs that live in CA and don't want to hassle with the risks of running an illegal system, CARB exempt is a must. CARB sucks, but those of us that plan on keeping our cars long term have to live with it.