Chris NottBadger5
Results 1 to 3 of 3

Thread: DYNO Help

  1. #1
    Reverse Gear

    Status
    Offline
    Join Date
    Dec 2004
    Location
    Pennsyvania, USA
    Posts
    4

    DYNO Help

    Listen guys,... i had my car dyno'd this weekend. It's a 225 QR with a ECS H valve, P-Flo intake, and Forge DV. That's it. THere was something weird goin on with the wheels. The wheels were kinda getting on the power by themselves. Here is a graph of the Total HP and Torque.
    Now, note the spikes in the torque and HP. The operator asked if i was letting off the gas...I wasn't. Now look at the torqe and Hp of just he Rear wheels.
    Why the spikes...? if i were to to show the RPM's as the dyno was running, when rear wheels would kick in, it would slow the RPM's for a sec...then speed up. Now check out the speed of both wheels...
    (RED is Rear - Green is Front) Seems as though the rear do a second by themselves, and the front coast......Any thoughts? and the engine was kinda hot...before my runs. Again, any thoughts? would a chip clear this up, or did my dealer mess something up when they changed the Haldex oil and filter last month?

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    Moderator

    Status
    Offline
    Join Date
    Oct 2003
    Location
    South Wales
    Posts
    2,942

    Re: DYNO Help

    The dips will be the haldex system working when the wheels are loosing traction on the rolling road. Perfectly normal...

  4. #3
    scoTTy's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Jan 2003
    Location
    Essex, UK
    Posts
    1,958

    Re: DYNO Help

    Absolutely normal. I'd ask the dyno operator if he's ever down a Haldex car before or even know what one is.

    It's also strange that you was driving the car and not the operator.

    All plain weird.

 

 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO