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FX35 Brake Boost / Brake Torque

Discussion in 'FX (03-08) - Engine & Drivetrain' started by Frankiago, Jul 16, 2007.

  1. Frankiago

    Frankiago Evo Troll Premium

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    As you may or may not know, our ECU's vary engine characteristics based on whether or not it sees you pressing the brake. Just another form of control the ECU has over our driving to try to make it safer.

    KPT has been beta-testing a lil module that would initially pulse the ECU when the brake is depressed so that the ECU sees that the brake input is actually working (otherwise throws a code after xx miles) and then for the length of time you keep the brake depressed, the ECU doesn't recognize it.

    Without this module, the ECU maintains your RPMs OR lets you drop RPM after letting off the gas. With this module, the ECU thinks you just tapped the gas pedal and will let you rev up the full range while you're still holding steady on the brake pedal.

    How is this used for us? One of two ways: you can artificially load turbos by adding the brake as a load. For example: you can be cruisin down the highway and hold the brake down a little bit while giving it gas. This loads the turbo(s) and builds boost for whenever you need it to take off and when the 3 honks (I'm not condoning street racing!) come up, you let off the brake and hammer down the gas and you instantly have boost since you were already artificially building it. This is called brake boosting.

    The other way is called brake torque, which is almost the same thing except without boost. You're at a stoplight (not condoning street racing!) or at the strip with your automatic transmission car (such as the FX) and you hold down the brake while rev'in it up, then when it's time to launch, you dump the brake and slam the gas so that you're already at a more optimum RPM to launch with and use a better part of our power band when taking off.

    I'll be installing it shortly.
     

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  2. rookie

    rookie Premium Member Premium

    Very cool man. Pics please, I never really had an issue with doing a burnout at the track. I had a harder time keeping the drag radials grabbing and launching me.
     
  3. gto

    gto Track Ready Moderator

    16,430
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    uhhhhh, I wish I had those kind of issues
     
  4. OP
    OP
    Frankiago

    Frankiago Evo Troll Premium

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    That also has to do with the fact that you can probably spin the rears with just stomping the gas, no brake required.

    This will probably help for the AWD guys who have plenty of traction:p

    Well, here's what my camera phone could do:
    View attachment 120849
     
  5. HumbertoCALI

    HumbertoCALI Premium Member Premium

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    WOW... This is so great. I have always wanted to feel the power of my 45 right off the line as if it was only RWD.... This mod should help me a bit more with gaining enough boost to give the right amount of torque to get my heavy ass off the line.

    what are the cons with this mod and the effects to my ECU? If I am just blinding it, It's cool.

    How would the installation work?:confused:
     
  6. Dr.2K

    Dr.2K iS Doctor on Duty iS VIP

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    Very nice Cube! Another mod for the fx! Let us know how it works out for you.
     
  7. jbaker1121

    jbaker1121 Im in touch with humanity iS VIP

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    sorry to bring up an older thread---but i want to see if this worked out cuz i was actually looking to buy this module today haha. can you show us the details please :(

    p.s. they dont have it on the KP site anymore???????

    oh no
     
    Last edited: Mar 4, 2008
  8. OP
    OP
    Frankiago

    Frankiago Evo Troll Premium

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    I never got around to TT's on the FX, so I didn't bother installing. This is in storage right now along with the supercharger, exhaust, and probably parts I've forgotten about.

    I'll give this a try sometime, if not I'll just sell it. Was originally intending on using it for brake boosting :shame:
     
  9. jbaker1121

    jbaker1121 Im in touch with humanity iS VIP

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    o0o i see
     
  10. brown_fv

    brown_fv Premium Member Premium

    Damn Cube, what happened?:eek:

    btw, i dont think i ever saw this thread...seems like a pretty good idea though...
     
  11. OP
    OP
    Frankiago

    Frankiago Evo Troll Premium

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    I've been contemplating other planZ... :angel:
     
  12. brown_fv

    brown_fv Premium Member Premium

    Ahh...interesting planz
     
  13. turbocad6

    turbocad6 iS VIP iS VIP

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    hey cube, wanna sell the built motor?, get the Z that much quicker,


    oh wait... I see the flaw in that logic now:p
     
  14. OP
    OP
    Frankiago

    Frankiago Evo Troll Premium

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    lmao... you tryin to ruin my planZ???