Agreed. I must of also missed somewhere that he had an AT. Really cuts down on your power level when you don't have a MT.

 

what turbo kit did you buy?

does any one know how much the gtm turbo kit is?

 

yes I have the automatic, do all turbo kits have to much torque for the auto to handle even with a valve body upgrade?

 

what kind of tune do you recommend for the stillen kit, if stillen's tune is no good?

what is wrong with the standard stillen tune?

 

Gamma (GTM) turbo kits start at around 9k I believe. It's hard to suggest going to them because of their history. It's also impossible to say whether your engine/transmission can handle the torque, since everyone has a different experience. I've heard of people running GTM's 1.5 SC kit for multiple years and that runs on 50trq more or so.

The problem with the Stillen tune is that it is pretty much a generic OTS map that you flash onto your car. Every car is different, so you never know how your car will react to theirs. For custom tuning, you can go either Uprev or EcuTek. I initially had Uprev, but switched over to EcuTek because it's tuned off of speed density instead of the MAFs. This is pretty much where the Stillen kit is weak at (MAFs are in the wrong spot, so they can't properly monitor the intake temps).

 

Truest statement ever!


Did you have to add anything else to go to speed density? My tuner was suggesting going to a Juke MAP sensor and tuning off of those readings.

 

I bought the Boosted Performance turbo kit. Unfortunately for you it only fits a MT because of turbo placement. Check out the link below for my build thread.


jwick Build Thread - First BP - G37T in existence - Nissan 370Z Forum

 

At an extremely low boost setting it might hold together but you aren't going to make any power. The reason that the SC kits seem to hold up pretty well with an AT is because the torque curve is linear unlike my turbo torque curve which ramps up really quickly.


I have over 400 ft-lbs before 4k rpms. There's a dyno chart in that build thread link but I'm not sure if it's may latest. I had it retuned when I swapped my Stillen exhaust for Fast Intentions.

 

I had Visconti do my tune and he swapped mine out with a GTR MAP sensor. I totally forgot about that actually. It ran about $150 if I recall.

 

Yeah, running Speed Density would be the savior for the Stillen kit. The intake is the reason why great tuners refuse to tune that kit. Unfortunately, EcuTek isn't available for 2008 ECU's, and the swap hasn't been figured out. So if you have a 2008, you're stuck with UpRev - just find a good tuner.

As far as the install differences, a lot of the TT kits require you to remove/lift the motor and do it on a lift, while the Stillen kit is mostly on the top of the engine bay. It can be installed with the car on the ground and the hood up. Also, if you're AT, I'm not sure what that does to your available options.

Lastly, throttle response. A supercharger doesn't show numbers the same way as a turbo car does, but it drives like a bigger motor. Same characteristics as it had before, just more everywhere. A turbo motor feels like you're throttling a turbo. Even if you minimize lag, you still find yourself throttling the spool characteristics of the turbo, not just throttling RPM. Don't know if this matters to you, and some people prefer this since the power comes on in a whoosh, but for road racing, a supercharger's predictable and instant throttle response is the way to go.

 

this is good information! I'm planning on going with the Stillen SC and their maps, as this is my daily-driver and I'm looking to keep my repair costs low!

 

This is only true to a point. These SCer are not like your whipple chargers. You still have to spool the turbine. It is not as dramatic as that require for a turbo because it is driven by the belt, but you still have spool. It's not an on/off throttle response like you would get from a SCer mounted directly on the engine. Also you only have true turbo lag at extremely low RPMS or when shifting (MT only). Any time when you have enough rpms to be at zero vacuum there is very little spool time more like you would have with a SCer.


The major benefit to a turbo is the instant torque and the ability to control desired power by WG control. It does however take some getting used to if you aren't expecting that much torque basically in an instant in a turn.

 

Just a clean swap or did you have to splice any wires?

 

I actually walked away when he did this, but I'm assuming it was a direct swap because he did it pretty fast. The only thing i have is the stock one and the bag that the gtr ones came in. I could shoot an email over to him to confirm though.

 

No worries. Just wondering. My tuner gets his Ecutek tuning software from Visconti anyway. If I have to go that way I'll get the same thing you do.