Results 1 to 3 of 3

Thread: Nick Williams 112mm TB Issues

  1. #1

    Default Nick Williams 112mm TB Issues

    So we dynoed with just a velocity stack on the inlet of throttle body, which BTW is on a Magnuson 2650 blower. Everything worked perfect. Now that I put it in the car, and hooked my 5” intake tube up, I can’t get over 53% throttle and it goes into error and sometimes limp mode. We used V5 build 30 on the dyno. I’ve tried that and V5 100 also. If I disconnect my intake, all is well. I’m using the approved GM pedal assembly. Anyone have any ideas?

  2. #2
    Join Date
    Dec 2009


    This doesn't seem like an EFI software/ECU firmware issue, but install V5 Build 110: (Holley EFI V5 Build 110 Updates) (Holley EFI V5 Revision Log)

  3. #3


    I assume this is DBW? How is the red/white wire on the DBW harness hooked up? Andrew

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