Si: Can vtec kick in early if you don't have vtec control?
09-23-2010, 08:42 PM
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Si: Can vtec kick in early if you don't have vtec control?
wel i was wondering in my si it sounds like vtec kicks in at lik 4000-4500 rpm amd it dont have vtec control so im just wondering if i just think im hearing it or there something on it to make it do that
Last edited by 2000em1boycivic; 09-23-2010 at 09:12 PM.
09-23-2010, 08:59 PM
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Si: can vtec kick in early if you don't have vtec control.
what do you mean you dont have vtec control? stock si wiring harness and stock motor? and stock ecu? then it should work...
Last edited by Former User; 09-23-2010 at 09:17 PM.
09-23-2010, 11:46 PM
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Re: Si: can vtec kick in early if you don't have vtec control.
ur ecu might have been tampered with at some point (by that i mean adjusted to that rpm) by a previous owner.
09-24-2010, 03:18 AM
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Re: Si: can vtec kick in early if you don't have vtec control.
vtec engages at 5800 rpm. what you hear at 4000 rpm is the secondary lobe on the camshaft. its bigger than the primary so it seems louder. then the vtec lobe is the biggest and is set at 5800 rpm on the stock pcm.
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09-24-2010, 06:29 AM
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Re: Si: Can vtec kick in early if you don't have vtec control?
Are you still getting a loud crossover at 5700 rpm? Are you sure you have the correct ecu?
09-24-2010, 06:36 AM
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Re: Si: can vtec kick in early if you don't have vtec control.
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