GTM Performance Engineering: Stage 1 Supercharger Upgrade Kit 500whp capable

SAM@GTM

We here at GTM are thoroughly excited to share the results of the Stage 1 Supercharger Upgrade kit. We tirelessly push the envelope and we're never satisfied!

For those of you not familiar with this upgrade kit, it effectively uses the intake system and supercharger compressor housing of our Stage 2 Supercharger kit to help the Stage 1 Supercharger breathe better. And oh, does it ever breathe!

Below is the list of all the parts that comes in this upgrade :

GTM SC Compressor housing C38-81 V band type
GTM SC Pulley 92mm
GTM Power St Fitting
GTM Power St Hose
GTM Breather Filter
GTM Urethane Eng Mount
GTM 3" MAF Piping
GTM 3" Inlet Intake
GTM 4.5" Intake Filter
GTM Transition Couplers
GTM T-Bolt 3" V-band Clamp
GTM SC Belt
GTM Base ECU Map

Depending on Pulley size, We recommend the following :

Bosch EV14 650cc injector upgrade
GTM Fuel Pump Voltage Stabilizer kit
Custom Dyno Tuning

With these breathing parts added to the C38-81 supercharger in our Stage 1 kit, we were able to squeeze every last drop of horsepower out of that blower. More, in fact, than anyone gave this blower credit for.

Below is the dyno graph. The BLUE lines are a bone stock 2011 Nismo 370Z.

The RED lines are the same car with our Stage 1 S/C and upgrade kit, 10psi of boost, test pipes, and HKS Cat-back Exhaust on 91 octane pump gas.

The GREEN Lines are the same mods except a smaller pulley, 11psi of boost on 93 octane gas.


For people that don't have our Supercharger yet and want this kind of performance out of the box, we'll be offering a Stage 1.5 Supercharger Kit so you can have great performance with a good price point.