Materials to Maintain Your ZHP IIIII Hand Protection IIIII Tools to Maintain Your ZHP
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  1. #101
    Join Date
    Dec 2014
    Location
    jacksonville FL
    Posts
    171


    finally checked dyno test of the list. always been curious. considering it only has the mild modification allowable for SCCA solo class STX, I am pretty happy with the numbers. esp considering the other data point I have, a friend who went with in his e39 M5, rated at 395hp at the flywheel put down 296hp.

  2. #102
    Join Date
    Dec 2014
    Location
    jacksonville FL
    Posts
    171
    Name:  zhp dyno plot.jpg
Views: 306
Size:  135.9 KB

  3. #103
    Join Date
    Nov 2014
    Location
    Portland, OR
    Posts
    10,243
    Not bad!

  4. #104
    Yup, peak numbers look good I think. The torque curve looks weird though with it dipping down and going up again (not sure if all M54s do this).


    Sent from my iPhone using Tapatalk


    2006 Coupe | Black Sapphire Metallic | Natural Brown | Gruppe M Intake | Corsa TSE3 | Michelin PSS on Apex ARC-8 | Koni Yellows |

  5. #105
    Join Date
    Nov 2016
    Location
    Charlotte, NC
    Posts
    3,130
    Quote Originally Posted by san View Post
    Yup, peak numbers look good I think. The torque curve looks weird though with it dipping down and going up again (not sure if all M54s do this).


    Sent from my iPhone using Tapatalk
    Isn't that dip normal for ZHP's?

    I actually don't feel it in my 2005, but it was very much there in my 2003.

  6. #106
    Quote Originally Posted by ZHPizza View Post
    Isn't that dip normal for ZHP's?

    I actually don't feel it in my 2005, but it was very much there in my 2003.
    I thought the dip was much lesser. Not sure though.
    I didn't notice it when I got my car 45k miles ago but I do feel it now (141k miles)...


    Sent from my iPhone using Tapatalk


    2006 Coupe | Black Sapphire Metallic | Natural Brown | Gruppe M Intake | Corsa TSE3 | Michelin PSS on Apex ARC-8 | Koni Yellows |

  7. #107
    Join Date
    Dec 2014
    Location
    jacksonville FL
    Posts
    171
    Quote Originally Posted by ZHPizza View Post
    Isn't that dip normal for ZHP's?

    I actually don't feel it in my 2005, but it was very much there in my 2003.
    my guess is that the dip at 3500 is lower in the rpm range than the typical 4000/4200 dip seen on most M54 dyno charts because the shark tune *may* advance the cams earlier... pure speculation. looking at the raw data the dip is about 8 ftlb, something I know I cant discern in the car....

  8. #108
    Join Date
    Dec 2014
    Location
    jacksonville FL
    Posts
    171


    video is from Saturday's autocross at roebling road raceway. I made some tactical errors, that didn't help my overall results. the course had 3 higher speed sections that I initially (first 3 runs) ran in 2nd gear which put the car on the limiter for multiple seconds. runs 4-6 I shifted to third three separate times (as seen/heard in the video). I should have done that from the beginning. not only did I carry more speed, I think there was speed left that I failed to take advantage of bc I didn't have the reps shifting from run 1 on. primarily, I think I was slow coming out of the first slalom and coming out of the Chicago box all the way to the second slalom. either way, run 5 was my best. put me in third in STX out of 8. 29th overall of 78.

  9. #109
    Join Date
    Dec 2014
    Location
    jacksonville FL
    Posts
    171
    I ordered a couple can of torco race gas concentrate, they arrived today. I normally run 93 and the dyno runs were on 93. I am going to try bumping up to 96/97 by adding the concentrate and see if I can tell any difference in the seat of my pants. I figure for ~$40 worth of concentrate, this experiment is worth a shot.

  10. #110
    Join Date
    Dec 2014
    Location
    jacksonville FL
    Posts
    171
    TIRERACK.com - Revolutionizing Tire Buying
    since upping the spring rates that car has felt best with front and rear sway bars set to full soft. today I swapped the stock bars back on to see if letting the car roll a bit more increases turning grip. next event is 17 jun. gonna be hot!

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