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  • JeepLab Prodigy Install LIVE

    Ok, So the install went pretty much off without a hitch.

    The plan was for us, JL guys, who had never seen a turbo before, install it with the Prodigy guys watching for issues as we went. Our ace, Carolina Pete lead the charge, as usual. Like any true mechanic, it was hard for Wes from Prodigy to watch from the side lines and not get dirty with the rest of us.

    Wes was a master mechanic before he was 21. He owns 2 garages in FL. The guys knows cars, and he knows forced induction.

    Jessee is one of our guys, who offered to put his jeep on the operating table in the name of science. LOL. Jess was an excellent sport and was just as busy with the install as the other guys.

    Here's a shot of Jessee as he opened the Turbo.





    This article was originally published in forum thread: JeepLab Prodigy Install LIVE started by JeepLab View original post
    Comments 253 Comments
    1. UselessPickles's Avatar
      UselessPickles -
      I have confirmed that the dyno operator lifted the throttle as soon as the power curve reached its peak and started falling. They were focusing on getting peak numbers. So the sudden dropoff at 6200 rpm is NOT representative of the power output of stage 2.

      No explanation for the loss in tq/power below 2700 rpms yet. Just that it is not expected and that it has not yet been investigated because the focus at the time was on getting peak numbers.


      While we're waiting for the "early August" dyno results, can we get some general thoughts on power delivery compared to RIPP and Magnuson? Still waiting to hear that blow-off valve too
    1. Pznivy's Avatar
      Pznivy -
      Quote Originally Posted by Yoinkers View Post
      This chart confuses me. Does the turbo hurt power under 2700 RPM?

      Why is the prodigy line lower than stock? Am i reading that right?
      Lets not gloss over this dyno sheet. How can the turbo make less than stock?

      Great that it makes huge power higher in the RPM band, but a power loss sub 3k RPM is troubling.

      The SC's are both above stock the whole time.
    1. JeepLab's Avatar
      JeepLab -
      Quote Originally Posted by Pznivy View Post
      Lets not gloss over this dyno sheet. How can the turbo make less than stock?

      Great that it makes huge power higher in the RPM band, but a power loss sub 3k RPM is troubling.

      The SC's are both above stock the whole time.
      The answer to this is going to come when Jessee rolls his truck on the dyno. We will see if we can get a very early read out, at the lowest possible RPM.
    1. Snarf77's Avatar
      Snarf77 -
      Quote Originally Posted by JeepLab View Post
      The answer to this is going to come when Jessee rolls his truck on the dyno. We will see if we can get a very early read out, at the lowest possible RPM.
      Yessir - two dyno charts to compare will make a world of difference and offer some new insights. Date is now scheduled as 8/1, pending any issues. I don't forsee anything so fingers crossed.
    1. JeepLab's Avatar
      JeepLab -
      Quote Originally Posted by Snarf77 View Post
      Yessir - two dyno charts to compare will make a world of difference and offer some new insights. Date is now scheduled as 8/1, pending any issues. I don't forsee anything so fingers crossed.
      STOCK TIRES!! And give us a picture of the truck on the dyno! (maybe some video)

      Charts will be posted as soon as Jess emails me the files.
    1. Snarf77's Avatar
      Snarf77 -
      Quote Originally Posted by JeepLab View Post
      STOCK TIRES!! And give us a picture of the truck on the dyno! (maybe some video)

      Charts will be posted as soon as Jess emails me the files.
      Stock Tires going on Thursday night. I'll feel silly driving 30 minutes to the dyno on baby tires after rolling 37s daily.
    1. UselessPickles's Avatar
      UselessPickles -
      I'm interested in what happens with the coolant overflow reservoir. Do you have any pics or thoughts to share on that? Is the new location reasonably accessible for checking the coolant level?
    1. Snarf77's Avatar
      Snarf77 -
      Quote Originally Posted by UselessPickles View Post
      I'm interested in what happens with the coolant overflow reservoir. Do you have any pics or thoughts to share on that? Is the new location reasonably accessible for checking the coolant level?
      The coolant tank is black (knew you'd like that) and it mounts near the front bumper where you can check it easily. My mount was a bit more of a challenge because I have a stubby front bumper and a front skid plate. We mounted it at a slight angle and it is behind my skid for protection. Checking it is not as easy as a stock bumpered JK but it really isn't too bad to remove two bolts, drop it, and inspect.

      Skid is off in this picture so it looks more exposed than it is.

      Attachment 914
    1. JeepLab's Avatar
      JeepLab -
      FIRST DYNO CHART

      This was the best run today. Here are some notes you need to be aware of.

      - The stock line in this chart is not Jesse's Girl, Its Sweet Pea's stock dyno line. Sweet Pea and Black Betty were dyno'd years apart (stock) and came out in the exact same spot, so I consider the line a standard.

      - Humid summer day

      - 4.88 gearing. - This shouldnt alter the line as far as power to the ground vs RPM but JG is geared.

      - Stock Tires. All our dyno's to date are on stock 255/75R17 BFG Km1s.

      Attachment 926
    1. JeepLab's Avatar
      JeepLab -
      photo bump!
    1. JeepLab's Avatar
      JeepLab -
      Quote Originally Posted by JeepLab View Post
      photo bump!
      Trying to get a bigger image....

      Attachment 927
    1. UselessPickles's Avatar
      UselessPickles -
      Looks like the dyno operator did the same thing as Prodigy's dyno operator: lift off the throttle and stop recording after peak power, rather than running it all the way to the rev limiter

      If the torque curve continues the same general downward slope as it does in the 5000 - 6000 rpm range, then it looks like it would be right around 240-250 ft-lbs and around 297-309 hp at 6500 rpm.

      Also worth mentioning: that severe dip right at 2500 rpm seems to be an anomaly. The other dyno runs from today show a nice smooth line from 2250 to 2700 rpm, as if that entire valley was completely filled in... and as if the hump in the stock torque curve were chopped off level from 2250 to 2700 rpm. This makes me think that dip at 2500 is probably something that needs to be smoothed out in the tune.
    1. UselessPickles's Avatar
      UselessPickles -
      Quote Originally Posted by JeepLab View Post
      Trying to get a bigger image....
      Is it possible to setup your forum software to show the "This image has been resized. Click to view the full image" bar at the top of the image (or similar functionality) that many other forums have?
    1. JeepLab's Avatar
      JeepLab -
      Quote Originally Posted by UselessPickles View Post
      Is it possible to setup your forum software to show the "This image has been resized. Click to view the full image" bar at the top of the image (or similar functionality) that many other forums have?
      Ill screw with it.

      I can make it a thumbnail you have to click on, and then it might be bigger. This forum software should be the best available. So if there is a way to make it bigger, ill figure it out.
    1. JeepLab's Avatar
      JeepLab -
      Quote Originally Posted by UselessPickles View Post
      Looks like the dyno operator did the same thing as Prodigy's dyno operator: lift off the throttle and stop recording after peak power, rather than running it all the way to the rev limiter

      If the torque curve continues the same general downward slope as it does in the 5000 - 6000 rpm range, then it looks like it would be right around 240-250 ft-lbs and around 297-309 hp at 6500 rpm.

      Also worth mentioning: that severe dip right at 2500 rpm seems to be an anomaly. The other dyno runs from today show a nice smooth line from 2250 to 2700 rpm, as if that entire valley was completely filled in... and as if the hump in the stock torque curve were chopped off level from 2250 to 2700 rpm. This makes me think that dip at 2500 is probably something that needs to be smoothed out in the tune.
      The rule in dyno testing is that 6k is the top. Ive been told before that 6k is where to let off. So the guy who did this dyno may have just known what he was doing vs. our others that push the envelope farther.
    1. JeepLab's Avatar
      JeepLab -
      I just altered the images, They are thumbnails now, but when you click them they should be full size.

      Good?
    1. UselessPickles's Avatar
      UselessPickles -
      I smell BS in that "6000 is the limit for dyno runs" rule. Sounds like an old rule of thumb from the days before electronic rev limiters existed. There's all kinds of engines out there that rev much higher than 6000 rpm. I think my wife's car revs to 8000 or 9000 rpm. You wouldn't stop the dyno at 6000 on that engine. Modern engines are designed to run safely (and often even continuously) anywhere within the rpm range all the way up to the rev limit.

      Clickable images for full size seems to work nicely now. It' just missing the message that explains that it can be clicked for full size.
    1. JeepLab's Avatar
      JeepLab -
      Quote Originally Posted by UselessPickles View Post
      I smell BS in that "6000 is the limit for dyno runs" rule. Sounds like an old rule of thumb from the days before electronic rev limiters existed. There's all kinds of engines out there that rev much higher than 6000 rpm. I think my wife's car revs to 8000 or 9000 rpm. You wouldn't stop the dyno at 6000 on that engine. Modern engines are designed to run safely (and often even continuously) anywhere within the rpm range all the way up to the rev limit.

      Clickable images for full size seems to work nicely now. It' just missing the message that explains that it can be clicked for full size.
      Pickles calls shenanigans!! Lol!

      I had asked Ripp and Mag both gave me a point to hit. I remember we went past it on our Dyno. I didn't mean it as an overall Dyno rule. I remember being impressed that the Dyno guy got it up so high.

      You do see the prodigy line 'crest'. It's made all the power it's gong to make by the time the line stops.
    1. UselessPickles's Avatar
      UselessPickles -
      When I dyno'd my motorcycle, I was on the motorcycle operating the throttle. The dyno operator pushed the button to start when I said "go", then pushed the button to stop recording when he heard the rev limiter kick in (just over 9000 rpm). I did about 12 dyno runs that day. My engine didn't explode, nor did my balls fall off.

      True story.
    1. Snarf77's Avatar
      Snarf77 -
      Pickles was correct that the dip in this run was an anomaly that was only experienced in this particular run.

      I plan to get my exhaust done - AFE high-tuck or similar and re-run her on the dyno to see if we have any improvement.
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