I see these chips for the ECU that makes your VTEC engage at 4000RPM or 3500. My question is, is it better that it engages lower or no? cuz i am abouts to swap my head and i was wondering if i should get a chip to get it to engage sooner cuz i am not in the 5500+RPM range too often

 

honda computers are amazing things if you know what your doing, the vtec was put there for a reason and unless your going to highly mod your car, it makes no sense to move it, if your going to be below your 5500 that means your not wanting to go fast, vtec is set in the higher rpm range cuz thats were it makes sense, ive got a b16 in my 93 hatch and i don't even drop out of vtec when i shift so thats why its there

 

to lower your vtec you would have to go get it tuned . Also they will lower it to maybe 4800~5200 rpm not more then that. You have to consider that lowering your vtec could make you loose power instead of gaining. That is why you should get it tuned by a pro who can set your vtec at the right point. Also read up on Hondata.

 

There have been countless threads on lowering vtec, and pretty much none of them end up well. Of course Honda wanted to make the Civic affordable, but they still put the vtec there for a reason, as stated above. Also already stated, power can be lost, and gas mileage would also be compromised since you are using a lot wilder cam at much lower rpms.

You would think that performance would be improved over stock with a lower vtec engagement, but even with a wilder cam, your motor wouldn't be able to support what power/fuel, etc that cam would be able to put out.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93SiVtec677 &raquo;</TD></TR><TR><TD CLASS="quote">they will lower it to maybe 4800~5200 rpm not more then that.</TD></TR></TABLE>



-Shane

 

I have my VTEC hooked up to a SPARCO steering wheel switch. The left switch is VTEC whereas the right one is nitrous.

 

the entire reason for variable valve timing is because the more aggressive cam lobes don't make power in low rpm's. If you crossover too soon, you will lose HP.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IHateJDM &raquo;</TD></TR><TR><TD CLASS="quote">the entire reason for variable valve timing is because the more aggressive cam lobes don't make power in low rpm's. If you crossover too soon, you will lose HP. </TD></TR></TABLE>

But if I put huge cams in my stock B16, won't it be fast? By the way, Taco Bell has sounded good for about the last 48 hours. Maybe it's because I am a spic. Seriously.

-Shane

 

I could see dropping it maybe 200 RPMs but not 1000 RPMs, Your fuel economy would drop like crazy.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1dayCivic &raquo;</TD></TR><TR><TD CLASS="quote">I could see dropping it maybe 200 RPMs but not 1000 RPMs, Your fuel economy would drop like crazy. </TD></TR></TABLE>

try again. For ***** and giggles I put my xover on my P28 to what the stock HX computer is set at and my fuel economy has not changed.