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Greddy Plenum Spacer Info (Torque/midrange)
skylineking posted a topic in Engines & Forced Induction
Hi everyone, been searching forums & Google for a while now struggling to find detailed info on my question... I have an r33 gtst (engine out currently) hks 3037s top mount & many other mods including a genuine greddy plenum. My question is how do I go about gaining the midrange loss back from the plenum? A few posts in various forums said a spacer between the plenum & the head. So this leads me to my questions below 1. How thick should the spacer be? 2. Did it cause any fittment issues? 3. Can you use the same bolts to fit the plenum back on or longer ones to suit? 4. to people who have done this was it really noticeable dyno/road feel? I'm not here to get plenum choice advice or what somoneones opinion on my setup is or why plazmaman this & greddy that...... just trying to find info on the greddy spacer idea & if it works well.... To anyone who has done this please shed some light on this topic, tell us what car/engine u have & how thick the spacer is + what were your gains.... Thanks in advance Ps hope everyone had a merry Christmas & have a happy & safe new year!