Element Tuning GT65 Bolt On, Hydra, 452whp @ 22 psi, 07 STI 2.5 Pump Gas

This is really impressive for a bolt on turbocharger running pump gas and only at 22 psi. The plot didn’t turn out as smooth as I like but the AFR was within .1 and timing was smooth. I think we just had a little boost oscillation going on. I also find it difficult on the Dyno Dynamic dyno to load and unload just right resulting in a boost spike and then a little oscillation (too many buttons to press. LOL!).

Dyno Dynamics @ Pina Motorsports, WA
Tuner: Phil Grabow Element Tuning
Wheel HP: 452whp UNCORRECTED
Wheel TQ: 482wtq UNCORRECTED
Target Boost: 22 psi
Target AFR: 11.1
Fuel: 92 Octane pump gas
Ambient Temp: 50
Elevation: 0

Initially we tuned the car at OEM fuel pressure but the DW 1000cc injectors were maxing out so we bumped the fuel pressure to 50 psi just to get the car tuned safely. The plan is to get some larger 1260cc injectors and the Hydramist system to turn things up.

Car Info
Engine Management: Element Tuning Hydra EMS
Turbo: Element GT65 Bolt On
Intercooler: APS
Meth Kit: None
Injectors: 1000cc DW, Bosch 044 Fuel Pump
Engine: World One, Element Tuning Rods, CP Pistons, Cosworth Cams, Brian Crower Valves, Valve Springs and Retainers, stock block and bore.
Intake/Inlet: APS 70mm intake, APS 3 Inlet hose, Magnus Intake Manifold, (longrunner, jet hot coated)
Headers: Gruppe-S Exhaust Manifold (jet hot coated)
Uppipe: SBR Up-Pipe with 44mm Tial Ewg (jet hot coated)
Downpipe: Invidia Catless
CBE: Invidia
Other: Element Tuning Competition Catch Can, Unorothox Racing stock diameter pulley
set, Greddy Racing Radiator and Oil Cooler

I honestly couldn’t believe the power we hit with the Element GT65 Bolt-on especially given the car didn’t have anything done to the heads but a set of cams. I was tuning other cars this same day with rotated 35R kits and head work that were making the same power at this boost level. This car has had a rough past with bad tuning and engines but World One Performance sorted out the car so I could do my job. I was really happy for the customer this turned out so well.

With larger fuel injectors I think we could have turned up the boost a little (maybe 1-2 psi) for another 30 whp or so. With the Element Hydramist we should be able to add an additional 4 psi and get this car close to 500 whp on pump gas.

For more information and discussion, please see this thread: http://forums.nasioc.com/forums/showthread.php?t=1939275

Phil Grabow
Element Tuning