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zreuan
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« on: January 05, 2002, 02:46:36 AM » |
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What RPM does VTEC ingage on stock PR3 ECU's?
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0 civic STD,B16A,LSD,CRX dash,DC sports 4-2-1 one piece,Ractive cat & cat back Exhaust,Apexi VAFC,Optima in the trunk,strut bars,10.3"brakes,more in storage waiting for summer
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CRXpower.net
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« on: January 05, 2002, 02:46:36 AM » |
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5gencivic
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« Reply #1 on: January 06, 2002, 02:51:18 AM » |
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5400-5600 rpm depending on load and other variables.
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9 CRX SI
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steel
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« Reply #2 on: January 06, 2002, 04:47:57 AM » |
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Mines approx 5,200.
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Phatwhippin CRX
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« Reply #3 on: January 06, 2002, 10:59:12 PM » |
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Stock 1st gen B16a it engages @ 4800
B16a2 (JDM) I believe 5200, and for USDM B16a2/3, 5500...... pretty sure of this.....
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NeophyteDMD
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« Reply #4 on: January 07, 2002, 12:01:04 AM » |
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Can't forget about the 60% throttle in order to engage vtec part. Not just 4800rpm or more. I can run up to 6k rpm without vtec, prolly even 7k rpms
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Phatwhippin CRX
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« Reply #5 on: January 07, 2002, 07:51:13 AM » |
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You sure? I can run it up to 5k at like 20% throttle and it will engage, you just don't hear it nearly as loud. The added air isn't as powerful as 60% + throttle, which is really what changes the pitch of the engine.
Someone correct me if I'm wrong....... :mmkay:
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NeophyteDMD
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« Reply #6 on: January 07, 2002, 02:26:28 PM » |
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You sure? I can run it up to 5k at like 20% throttle and it will engage, you just don't hear it nearly as loud. The added air isn't as powerful as 60% + throttle, which is really what changes the pitch of the engine.
Someone correct me if I'm wrong....... :mmkay: yes, someone please correct him. :p :stupid: |
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Phatwhippin CRX
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« Reply #7 on: January 07, 2002, 03:17:05 PM » |
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.........awaiting correction..... :music:
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steel
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« Reply #8 on: January 07, 2002, 05:39:16 PM » |
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VTEC does not engage unless at a certain percentage throttle. But the second you step on the gas it immidetly engages. Simple as that, Correction made.
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Phatwhippin CRX
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« Reply #9 on: January 08, 2002, 12:21:56 AM » |
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No tnecessarily...... you just dont FEEL it, but it's engaged. OF course you won't feel it if you're not on the gas.
That the difference between VTEC and i-VTEC. VTEC operates once you hit a certain RPM level, no matter what. You may not feel it, but it's there.
i-VTEC can determine when you are WOT, and when you are normal driving, and alter the cam timing/VTEC crossover points to maximaize the performance of the engine.
Seriously, I woul dlike to see some factual evidence as per the %%% throttle thing, which I don't think is true......
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steel
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« Reply #10 on: January 08, 2002, 12:29:06 AM » |
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Bitch, talk to a Honda mechanic!
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Phatwhippin CRX
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« Reply #11 on: January 08, 2002, 12:38:18 AM » |
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Prove me wrong, cockmonkey.
Wanna bet 99% of Honda mechanics don't know shit about the PR3, or have never even SEEN, let alone WORKED on a 1st gen b16a?
Honda mechanics wouldn't know the answer to this..... remember, he's asking about a B16a, PR3 ECU......
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MaX
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« Reply #12 on: January 08, 2002, 03:26:05 AM » |
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haha...he said cockmonkey....
now that everyone is shit-talking up their butt crack about vtec...
if you are in neutral and u rev pass 4800, say all the way to 8000, does vtec still engage, even though you are neutral!?! i think it does, but i just want to make myself think i am smarter than what i really am...
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Phatwhippin CRX
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« Reply #13 on: January 08, 2002, 07:21:47 AM » |
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Yeah, I'm pretty sure... Reason I say that VTEC is merely RPM activated, and not throttle receptive as well, it because I'll be on the highway, doin 90, barely on the throttle, and I know I'm in VTEC. I can feel it, as well as all the extra gas comsumption. And like I said, I'm pretty sure that's the difference between i-VTEC and s-VTEC (stupid VTEC  ), whereas the B16 just crosses over at X rpms, but the K20 (is that the one engine?) crosses over dependant on your throttle perecentage, RPMs, stuff like that.... it KNOWS when/where to crossover....... |
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lemonrex
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« Reply #14 on: January 08, 2002, 04:29:19 PM » |
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if you are in neutral and u rev pass 4800, say all the way to 8000, does vtec still engage, even though you are neutral!?! It does on a b16a2. Well, it does on the Civic Si engine I know. Don't give me shit about saying b16a2. I know that's not an engine code. Just trying to make sense. |
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