With over six years of experience with the G35 alone, we've defined luxury performance. Whether it's just a more aggressive sound you're after or a full Cosworth motor with an APS twin turbo kit, we have you covered. GoodSpeed is now offering in-house live tuning with multiple maps using your cruise control to switch between them. No more piggybacks and no more sending off your ECU to flash it. Call us for more information.
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Featured Products

  Stillen 370Z / G37 Intercooled Supercharger System
Finally, HUGE power for the VQ37 engine! GoodSpeed Performance is excited to offer and install the Stillen VQ37 Supercharger System for the VQ37 engine 515HP - 438WHP - 343LB/FT Torque (see ** notes below) +155 Horsepower at the Wheels! @ 8 psi on 91 octane fuel (see ** notes below) This supercharger system took over a year to develop and involves some revolutionary designs. This supercharger system is developed to offer the customer easy upgradability and installation without requiring a hood replacement to complete the installation! With this supercharger system we bump the power output to over 500 horsepower! With lots of room to grow! Some of the more noteworthy features of the...GSP Price:
$ CALL

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  GOODSPEED Power Package for Infiniti G37
After numerous customer requests to come up with a power package to unleash as much power as possible from the naturally aspirated G37, GoodSpeed Performance is happy to share a GoodSpeed Power Package for the G37. While we love supercharging these cars, some customers prefer to retain the NA but still want more performance and sound! This package consists of 4 items: 1. Stillen Generation 3 Long TRUE cold air intakes 2. Stillen Hi Flow Catalytic Convertors 3. Stillen Stainless Exhaust with dual wall tips 4. Hypertech Max Energy Sport Power Programmer This combination adds additional power and has a more aggressive sound. The Intakes allow much more air volume, but more...GSP Price:
$2618.00

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  JP USA Co G37 Coupe S 07-up DISCONTINUED
G37 Coupe S 07~up Model # JP G37 PU Includes: Front under spoiler Side sport mud guards Made with OEM quality Super Polyurethane. NOTES: Full kit includes front under spoiler and sport side mud guards L&R. **Pictures shown with Infiniti OEM rear mud guards on G37 S model** Hardware is included with all of our products. For products that required double-sided tape, industrial grade double-sided tape comes pre-installed Full Paint and install available at GoodSpeed PerformanceGSP Price:
$759.00

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  JP USA Co G35 Coupe 03-05 Front Lip Spoiler JP G35 FUS
G35 Coupe 03-05 Front Lip Spoiler Model # JP G35 FUS Includes: Front under spoiler Made with OEM-Quality polyurethane. NOTES: Will NOT fit the 06~up G35 model with Infiniti aero package. Hardware is included with all of our products. For products that required double-sided tape, industrial grade double-sided tape comes pre-installed. Full Paint and install available at GoodSpeed PerformanceGSP Price:
$359.00

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