Results 1 to 2 of 2

Thread: Do I need new WBO2 sensor with Terminator Max?

  1. #1

    Default Do I need new WBO2 sensor with Terminator Max?

    I currently have Holley HP EFI installed and I'm 'upgrading' to the Terminator X Max, so I can have proper DBW control, tired of the little issues with the factory PCM controlling my DBW. Anyways, I see that my HP EFI used the 554-101 Bosch sensor, but the new Terminator's use 554-155 sensor. From what I understand, the 554-101 is the older Bosch 4.2 sensor and the 554-155 is the newer 4.9 sensor and are not compatible? So I'll have to remove my old sensor and plug in the new one included with the Terminator, correct?

  2. #2
    Join Date
    Dec 2009


    Correct, the Terminator X Max uses the Bosch LSU 4.9 WBO2 sensor. The Bosch LSU 4.2 WBO2 sensor is incompatible (LINK).
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
About us
Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR® Sprint® Cup team and nearly every NHRA® Pro–Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Headers, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.
Join us