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throttle body

  1. Grom Performance
    Hey guys, my first post here, English is not my native language, sorry for any mistakes. I've read many posts about 34mm TB vs ported stock ones. Some said no, low end would suffer. But dyno figures really attracts me to buy one. Is stock TB enough for my setup? I'm using DCR R2 cam, intake...
  2. Grom Talk
    I'm thinking of swapping the throttle body and have a few questions: 1) Do I need to de-pressurise the fuel system to swap over the injector or just leave injector attached and then fit it after to the TB once attached? 2) Do I just pull the tps off and put it on the new one (The koso 34mm...
  3. Grom Parts for Sale / Wanted
    Im looking for a OEM throttle body just seeing if any one has done an upgrade and has one lying around they want to sell.
  4. Grom Performance
    I just received an over bored throttle body and it does not have the pass through for an iac set up. My question is will I have a cell with the motor unplugged or should I just put the motor in the blank and leave it plugged in?
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