02-07 Hayabusa Plug and Play ECU Flashing Nitrous Harness



The fully plug and play nitrous harness to be controlled by your flashed 02-07 Hayabusa ECU.

  • Fully plug and play (no splicing what so ever)
  • Provides a window switch (Arm and Disarm RPM programmable in ECU Editor)
  • Provides a WOT switch (TPS > 85% programmable in ECU Editor)
  • Provides map switching in your ECU when NOS starts spraying.

My personal 05 Busa made 180 hp on motor, 230 hp on nitrous using a 38 jet in the airbox, with 2 degrees of timing removed while spraying.  Dyno chart below, notice the “sudden” increase in power at 6200 RPM.

Gen 1 Nitrous Harness Install Directions

Please note that while I do my best to ship items the business day after they are ordered, I am not always able to do this.

If you have an urgent need for anything, please email me directly greg@boostbysmith.com.

Domestic:  I ship most packages USPS priority mail, which is advertised as 2-3 business days.
Smaller items with shipping rates at just a few bucks are sent USPS first class mail.
I can ship UPS ground as well.

International:  Due to long delays with USPS during Covid 19, I am only shipping via UPS.
The customer is responsible for any brokerage/customs fees.  My site is setup to add $55
for international shipments as this is the worst case for UPS with rare exception of a remote service
zone fee which I will contact you if this is the case.

In the event that shipping is less than $55 I will send a refund.  Feel free to contact me in advance and I can check exact shipping for you.

Additional information

Weight 1 lbs
Dimensions 9 × 6 × 2 in


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