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Old 05 Dec 2007, 03:16 am
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Default Question about vtec?

yeah so i have a 1998 acura integra gsr that i barely bought about 2 months ago and my vtec engaged at 4500, but after i replaced my water pump, timing belt and had my timing adjusted i noticed that my vtec now engages at 5400 rpm. so is this normal for a gsr?
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Old 05 Dec 2007, 03:31 am
Join Date: Dec 2007
Posts: 48

Check your oil levels/change oilReset your ECUThose are the most common
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Old 05 Dec 2007, 03:46 am
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Join Date: Aug 2007
Posts: 163

you're getting it wrong there chief4400 is where the butterflies in the intake open up more5800 is where the third lobe on the cam is engaged-vtecthere is no point for a vtec engagement that is sooner unless you have forced induction or a good increase in displacement. it's about volumetric efficiency. it makes no point to switch to other lobe when you don't need the air you will just loose torque
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Old 05 Dec 2007, 04:01 am
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Posts: 891

thats were it should of normaly kicked in, the prevous owner must of had changed... VTEC is all caps =]
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Old 05 Dec 2007, 04:18 am
Join Date: Sep 2007
Posts: 52

yes all is well.
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