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Thread: First run Finally!! What do you guys think

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    Question First run Finally!! What do you guys think

    So I finally got the car on the road today to do some tuning and logging runs. For the most part the car runs good. I think I need to check the plugs and re-gap them. I'm getting a little sputtering when going WOT.

    Here are the stats on MODS on the car/engine:

    93 TT Rebuilt from ground up
    Car is full TT/AWD but the block is N/A 10:1
    TT ECU, Fuel, Etc
    Walbro full -6an fuel lines from tank forward
    Fuel Lab FPR at 55psi
    Stock Coils/Plug wires Copper Plugs gaped at 32??? I think Need to double check
    Stock intake, SMIC, turbos Set at 6psi for initial tuning
    SAFC2
    AEM WB Wired into EGRT on ECU for logging.


    I took a look at the logs afterwords and only saw a few spots where I am getting knock. They are kind of random and I am wondering if it is even something I should be concerned about. I am going to richen it up a little between the 3000-4700 range, what I am really concerned about is that it is not very consistent. If you look at the logs I have the pulls highlighted it green and the knock in red. If you compare the pulls the knock starts earlier on in the RPM range and later on in the higher RPM range. I would have figured it to be more consistent.

    So what are you opinions.

    For some reason the WBO is logging in degrees instead of AFR! Anyone know how to fix this? It shows correctly on the MMCD.

    Here is the first log. It's huge and has multiple pulls and cruising data. I did not format this log. For some reason when I go above 50% throttle I started getting bad knock in the 2300-2600 rpm range. if I steady throttle into it I don't get the knock......WTH???

    http://3s.gonzoinc.com/albums/userpi...6_16_07_37.xls

    Here is the last run I did. I did go through and format this one and strip out all the crap data and highlighted the pulls.

    http://3s.gonzoinc.com/albums/userpi...-02-06_Run.xls

    Check it out on Youtube!!


    93 Stealth TT - The Stealth Project

    Renegade Tech Works ECS Controller on Intrax Springs
    Chrome ECU
    Hybrid 13g's
    EVO 560cc Injectors
    Spec Stage 3 clutch
    Ninja Performance Output shaft & Input spool
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    Megan SS Exhaust
    Fidanza Cam Gears and Clear Covers
    3rd Gen Lifters
    HKS BOV
    K&N FIPK
    Maximal High flow converter
    Walbro FP & FuelLab FPR
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    More to Come......

  2. #2
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    It looks like you should lower down your fuel pressure. Stock is 43 psi. Looks like the ecu is pulling out almost 20% fuel at idle and low throttle just to keep it running good. After lowering the fuel pressure, I would do a log at WOT and see what you get. Partial throttle knock could be anything. You can knock by running too rich as well.

  3. #3
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    Quote Originally Posted by Hans@GZP View Post
    It looks like you should lower down your fuel pressure. Stock is 43 psi. Looks like the ecu is pulling out almost 20% fuel at idle and low throttle just to keep it running good. After lowering the fuel pressure, I would do a log at WOT and see what you get. Partial throttle knock could be anything. You can knock by running too rich as well.
    Really!! Now I never knew that! I wish my WB data would show on the log files. I'll drop it down to 43psi and see how that works.

    I've got another issue that may also be part of the problem. When I drive around and let off the gas the car idles at almost 3000rpm's, then when I slow down enough it drops to base idle. I'm thinking something is going wonky with either the IAC or the FIAV. The IAC is the black style and it tested out good a couple months ago. I have a TT throttle body I rebuilt that I am going to swap in and see if the problem is still there.

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    Are the water lines still running to the throttle body?

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    Yeah I think the FIAV valve has gone bad or is sticking. Once I swap out the TB I'll know more.

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