when vtec kicks in at 5,000 it makes a really loud nose and seems to get slower. i know the vtec is working but not making any speed from it. i have my rev at 8,500. i have a b16 in a 95 hb. any ideas thanks...

 

...

 

do you have a catalytic converter? If so, it might be clogged.

I had the same exact problem with my b16...and it turned out the honeycomb inside the cat was sitting sideways, hence, blocking the free flow of exhaust gases. That's why you're car feels sluggish especially on VTEC

 

Also do you have a vafc? and if you do did you mess with the vtec cross over?

 

well about 5 months ago i have full exust put on, so im guessing the cat should be clean, but i will have to look there. wheres the vtec crossover?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b16mike &raquo;</TD></TR><TR><TD CLASS="quote">. wheres the vtec crossover? </TD></TR></TABLE>

I really do hope that you are kidding.

 

If is making a lot of noise also you can check the CAM Gears, and if you do not have them check the cams positions timming. Just 1 degree change can produce a lot of noise, very good but nothing of power.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EK16B &raquo;</TD></TR><TR><TD CLASS="quote">

I really do hope that you are kidding.</TD></TR></TABLE>

see.. what he means by that is... That's sorta like asking where the gas pedal is.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NY93CivicEx &raquo;</TD></TR><TR><TD CLASS="quote">

see.. what he means by that is... That's sorta like asking where the gas pedal is.</TD></TR></TABLE>
It is clear he do not know what is he driven, a Honda or Nissan....... Try to study a little bit more pal.......

 

hmm im having the same prob im gonna check my cat and see

 

In the S2000 there was a sensor under the hood that was dirty... clean that one up and vtec should work perfectly fine.... all mine used to do was scream but not really move.... well hope i helped any.

 

well i thought that vtec kicked in later than 5K i though it kicked in a like 5.5K or 5.8K, if you alter your vtec to come it soon you could be loosing horse power because your using utilizing the high rpm valves sooner than they are supposed to be... or something

correct me if im wrong eekkkk

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eg4usdm &raquo;</TD></TR><TR><TD CLASS="quote">well i thought that vtec kicked in later than 5K i though it kicked in a like 5.5K or 5.8K, if you alter your vtec to come it soon you could be loosing horse power because your using utilizing the high rpm valves sooner than they are supposed to be... or something

correct me if im wrong eekkkk</TD></TR></TABLE>

That's accurate enough.

 

I'm guessing he has a chipped ECU

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b16mike &raquo;</TD></TR><TR><TD CLASS="quote">i know the vtec is working but not making any speed from it...</TD></TR></TABLE>

u know the vtec is workin but not making speed..

so u mean vtec isn't workin? i am confused

 

my ls/vyech kick in at 4400

 

Let me help you out there pal...
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LsVtecGGrr &raquo;</TD></TR><TR><TD CLASS="quote">my ls/vtec kicks in at 4400</TD></TR></TABLE>
vs.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LsVtechGGrr &raquo;</TD></TR><TR><TD CLASS="quote">my ls/vyech kick in at 4400</TD></TR></TABLE>

 

my b16 eg does the same thing...vtec kicks weak as ****...imma check the sensor though that sounds like a good idea

 

Do you have aftermarket cams because i put ITR cams in my car (b16a2) and vtec was obnoxious and dint make power until i bought an FPR and messed with that. Hope this helps.

 

Why do most people think that VTEC on a stock engine will atually do something when it engages? You're not going to suddenly jump from 50mph to 200mph...thanks.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dimi &raquo;</TD></TR><TR><TD CLASS="quote">Why do most people think that VTEC on a stock engine will atually do something when it engages? You're not going to suddenly jump from 50mph to 200mph...thanks.</TD></TR></TABLE>

Not sure what you mean by this because when my seconday lobes kick in there is a VERY noticeable increase in power.....honestly the feeling is similar to a small nitrous shot. &lt;shrug&gt;

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dimi &raquo;</TD></TR><TR><TD CLASS="quote">Why do most people think that VTEC on a stock engine will atually do something when it engages? You're not going to suddenly jump from 50mph to 200mph...thanks.</TD></TR></TABLE>

Seriously. Also, you've got the "torqueless wonder" B16: it's not going to suddenly make a shitload more torque when the big lobes engage. Just because it doesn't "feel" faster doesn't mean it's not doing its job. These are small-displacement Hondas, people, not SBCs.

 

i know how my b16 should be driving, and vtec feels almost slower before u hit it. i had my ecu chipped and vtec is at 5,200 but it was runin fine like that for 4 months or so. also i looked at the vtec screen and clean. one thing i was thinkin about replacing was the vtec soliod. but i called honda and they wanted 181.00 so im gonna wait on that. any more ideas please thanks , but no i do not have cams

 

i know how my b16 should be driving, and vtec feels almost slower before u hit it. i had my ecu chipped and vtec is at 5,200 but it was runin fine like that for 4 months or so. also i looked at the vtec screen and clean. one thing i was thinkin about replacing was the vtec soliod. but i called honda and they wanted 181.00 so im gonna wait on that. any more ideas please thanks , but no i do not have cams

 

Just because the exhaust is supposed to be new doesn't mean there can't be a defective part or bad install.