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Thread: Does my dyno chart look right?

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    Stress free wheel gap. Not Verified Feedback Score 0 YoshiBishi's Avatar
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    Does my dyno chart look right?

    I feel like my torque band drops pretty significantly and also isn't as close to my max HP as other dyno charts that I have seen. Perhaps the tuning is off?

    2011-02-21 10.39.23.jpg

    I am also getting misfires if I go WOT around 5k rpms. Sounds like I'm popping popcorn in my exhaust. Not sure if this is something broken, a bad tune, or the AFR isn't right.

    It was hesitating and bucking as well. I disconnected the ECS and it stopped hesitating. Now, it seems to hesitate when I try to start it up. It sounds like the engine is bogged down. It always starts, but it acts like it is straining.

    I have new plugs and wires
    Walbro Pump and Hotwire kit
    Krank Vents
    Catch Can
    3sxecutioner kit
    Fuel Rail Adapter Kit
    550cc Fuel Injectors
    GM Maf-T with Dejon pipes
    Ebay downpipe
    3sx Single Pass radiator

    I just got my 60k maintenance done as well as getting almost every hose and line replaced in the engine bay.

    I've only owned the car for <500 miles, was bone stock when I purchased it in beginning of December and was running perfectly, ECS was working too!

    When I got the downpipe put on, it started bellowing out smoke and I burned nearly 4 quarts of oil in <100 miles. The rear turbo failed which resulted in having to get all of these mods put on. Now the car runs horribly at WOT. Should have left her stock
    Last edited by YoshiBishi; 02-21-2011 at 12:10 PM.

  2. #2
    1st ever COTM and COTY verified Feedback Score 9 (100%) green-lantern's Avatar
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    It does look weird, did 3sx tune it?

    Quote Originally Posted by HilbillyHomeboy View Post
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    Stress free wheel gap. Not Verified Feedback Score 0 YoshiBishi's Avatar
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    Yea they did.
    Last edited by YoshiBishi; 02-21-2011 at 04:22 PM.

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    Forum User verified Feedback Score 1 (100%) thor'svr4's Avatar
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    shouldn’t hp and tq cross at 5252 rpm? other than that ive got no clue what a '3sxecutioner' should make or what its comparable too. If 3sx just tuned it, I would trust them to have done a good job. was it popping while on the dyno? or was it fine while dyno tuning and now its suddenly acting up?
    the basic go fast bits...
    forged short block, Billet DR1000's, 680cc injectors, meth inj, FMIC, MAFT, Apexi Neo, hotwired 255lph fuel pump.

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    Stress free wheel gap. Not Verified Feedback Score 0 YoshiBishi's Avatar
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    I wasn't there for the dyno or tune, so I wouldn't know. Here are 2 from their website

    I think that chart is skewed, they changed the scaling so it might look weird.. I'll have to get another one to check. That may be what is tricking me.



    Last edited by YoshiBishi; 02-21-2011 at 09:49 PM.

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    1st ever COTM and COTY verified Feedback Score 9 (100%) green-lantern's Avatar
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    Quote Originally Posted by YoshiBishi View Post
    Yea they did.
    If it's doing all these things then something isn't right. If they did all the work then they should fix the issue.

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    Advanced Tech? verified Feedback Score 0 i3igpete's Avatar
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    something is choking the airflow if the top end is drops off worse than their other dynos. you still on stock sidemounts? I forget who posted it but there was a log with pressure sensors before and after IC's, comparing the two. the stock sidemounts had something like 6-7psi pressure drop at the top end while FMIC had less than 1psi difference.
    Maddog Performance Engineering

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    My Truck is Faster Than My Car Feedback Score 0 lparrill's Avatar
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    Subscribing, I have 3sxecutioners on my car...

    IIRC that car had a HUGE Pit-Road M intercooler, which makes quite a difference

    Found those threads!!

    http://www.3sxautomotive.com/Teixeira/
    http://www.3si.org/forum/f1/3sxecuti...16awtq-492765/
    Last edited by lparrill; 02-21-2011 at 11:35 PM.
    Levi

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    Stress free wheel gap. Not Verified Feedback Score 0 YoshiBishi's Avatar
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    Ah, good info, forgot that my stock SMIC would limit boost and power. Would getting a new FMIC fix the misfiring issue as well? I'll have to talk to them about it.
    Last edited by YoshiBishi; 02-22-2011 at 11:58 AM.

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    1st ever COTM and COTY verified Feedback Score 9 (100%) green-lantern's Avatar
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    Quote Originally Posted by i3igpete View Post
    something is choking the airflow if the top end is drops off worse than their other dynos. you still on stock sidemounts? I forget who posted it but there was a log with pressure sensors before and after IC's, comparing the two. the stock sidemounts had something like 6-7psi pressure drop at the top end while FMIC had less than 1psi difference.
    I remember that, couldn’t some of the drop be from cooling the air? If I remember right, that was being debated in that thread.

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