2JZGE valve lift at 100% throttle 4400 rpm??
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so i was on the highway testing out my lights and I thought I mine as well have a few pulls so dropped down into 3rd and floored it. now I dont think i use to go 100% throttle because as I was gunning it my SAFC told me I was only at around 95% throttle, so i picked up my heel and drove my toe down going up to 100% and for the first time I noticed that at 4400 rpm there is a noticeable change in tone and a little harder of pull as if it were like VVTi or Vtec (I use to drive a GSR). This only happens at 100% anything less and it isnt there. do we have valve lift?
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What butterfly are you guys talking about
? The only one im aware of is the traction control butterfly but it is directly inline with the throttle butterfly. What you feel might just be mental
.
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I think your hearing the infamous whistle. My last SC had it, almost sounded like a tiny turbo starting to spool exactly at 4400 rpms and only at full throttle.
The Air control valve in the intake starts to open at WOT only above 4400 rpm to change the effective intake length or resonance or something in order to achieve maximum torque, and when it is gunky around the opening it makes a whistle depending on how bad its gunked i believe. you should be noticing a stronger pull when you hit 4400 rpm at WOT, this is normal and how Toyota designed the engine
see: http://www.turbomr2.com/MR2/Reference/TVIS/TVIS.htm "Acoustic Control Induction System"
and i believe a discussion somewhere on SF. i believe the solution is to open it up and clean it
The Air control valve in the intake starts to open at WOT only above 4400 rpm to change the effective intake length or resonance or something in order to achieve maximum torque, and when it is gunky around the opening it makes a whistle depending on how bad its gunked i believe. you should be noticing a stronger pull when you hit 4400 rpm at WOT, this is normal and how Toyota designed the engine
see: http://www.turbomr2.com/MR2/Reference/TVIS/TVIS.htm "Acoustic Control Induction System"
and i believe a discussion somewhere on SF. i believe the solution is to open it up and clean it
Last edited by Ali SC3; 03-30-08 at 02:16 PM. Reason: wrong part
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