Results 1 to 7 of 7
  1. #1

    Sluggish low end DBW throttle response

    On an 08 is there anything that can be done about the sluggish (delayed) DBW throttle response at lower RPMs? I already have a venom pcm (not sure if that one tunes the throttle table or not)

  2. #2
    Supporting Vendor JonB ~ PartsRack's Avatar
    Join Date
    Oct 2013
    Location
    Columbia River Gorge near Portland OR
    Posts
    2,257
    Venom PCM is the best, usual fix.

    Old 2007-dated spark plugs and wires next culprit

    Coilpaks next.

    and of course a G4 can benefit a lot at launch from a 3:55 rear gear!
    Jon "JonB" Brobst ~~~~:<~ JonB@PartsRack.com


  3. #3
    Regional Secretary
    VOA Mamba Member
    since 2013
    Western Reserve
    Web Site Committee
    01sapphirebob's Avatar
    Join Date
    Oct 2013
    Location
    The Western Reserve
    Posts
    2,152
    Quote Originally Posted by efnfast View Post
    On an 08 is there anything that can be done about the sluggish (delayed) DBW throttle response at lower RPMs? I already have a venom pcm (not sure if that one tunes the throttle table or not)
    Send your PCM to Prefix and see if they will flash it. While the Venom controller improves throttle response the Prefix flash should help a lot.
    '01 Sapphire RT/10. '08 Snakeskin Green Vert. "H" spokes, Grey/Black interior, Graphite bezels, NAV, Full Belanger exhaust w/ Hi-Flows, ARROW PCM and Quaife rear end with 3.55's. http://www.westernreservevipers.com

  4. #4
    Out of curiosity has anybody tried to reset their throttle position sensor by restricting pedal travel during the reset, such as:
    https://www.viperalley.com/forum/vip...onse-gen4.html

    I've found a few threads where people say it improves a gen 4 throttle response. Theoretically I could see why it could possibly work ... I've just been having a run of bad luck lately so am chicken to try it, lol

  5. #5
    Enthusiast Steve M's Avatar
    Join Date
    Oct 2013
    Location
    Dayton, OH
    Posts
    3,006
    I would not recommend that approach...I know people have done it in the past, but my understanding was that the effect was only temporary due to the computer adapting to the change and reverting back to what it was originally. These cars are extremely sensitive to messing with anything related to airflow through those throttle bodies...if anything is even slightly out of spec, the PCM goes into limp mode, and in my experience, that limp mode has been just as dangerous as if the damn things had stuck open which is what the limp mode was designed to protect against.

    The Arrow reflash of the Mopar PCM is your best option, but keep in mind that some of the sluggish response is mechanical in nature. The stock clutch/flywheel combo is 60+ pounds, and is the primary contributor to the car taking what seems like forever to rev off idle. When I switched to a lighter weight clutch/flywheel (38 pounds), the throttle response was drastically improved. That said, it was NOT a cheap option, even with the labor to R&R being all mine.

    My $0.02.
    2008 SRT-10 Coupe - Venom Red Metallic w/ White Stripes
    High Flow Cats | Gen 5 Intake Manifold | HPTuners | 3.55s | MCS | DSS Axles | Nth Moto Clutch | 11.04 @ 129.7, 1.81 60' (-100 ft DA, w/ 3.55s)

  6. #6
    Enthusiast labtec's Avatar
    Join Date
    Mar 2014
    Location
    Maryland
    Posts
    123
    My 04 (72,000 miles) started missing under heavy load (foot). Waited till dark in garage, lifted hood, checked for blue light show from plug wires and found it on drivers side bank. Changed plug wires, problem seems solved. Now runs like a scalded cat

    Quote Originally Posted by JonB ~ PartsRack View Post
    Venom PCM is the best, usual fix.

    Old 2007-dated spark plugs and wires next culprit

    Coilpaks next.

    and of course a G4 can benefit a lot at launch from a 3:55 rear gear!

  7. #7
    Quote Originally Posted by efnfast View Post
    On an 08 is there anything that can be done about the sluggish (delayed) DBW throttle response at lower RPMs? I already have a venom pcm (not sure if that one tunes the throttle table or not)
    Have the throttle relearn done if you have not, even if you had it done before try it again.
    Mark Jorgensen

    .


 

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •