b16a redline at 9,000 rpm but vtec kicks in at 6,200
09-01-2004, 10:51 AM
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b16a redline at 9,000 rpm but vtec kicks in at 6,200
question got a b16a sir II into a 92 hatch cx why does vtec kick in so late at 6,200 rpm when im redlining at 9,000 rpm??? now next question if i get a vafc to wha increments should i just the air and fuel too? and whats the lowest i can have vtec open?
09-01-2004, 10:53 AM
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Re: b16a redline at 9,000 rpm but vtec kicks in at 6,200 (b18crxturbonitrous)
Unless you are on a dyno doing a tune, the vtec is where it is for a reason. Dont fool with it.
09-01-2004, 11:16 AM
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Re: b16a redline at 9,000 rpm but vtec kicks in at 6,200 (handa)
5 speed using the stock b16a ecu cause i bought the swap with the whole front suspension basically the whole front clip but i dont know why vtec is kicking in so late i got a race tonight for some money n i need to by pass it to my own switch to have vtec kick in at like 4 or 4500 or else im loosing
09-01-2004, 11:28 AM
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Re: b16a redline at 9,000 rpm but vtec kicks in at 6,200 (b18crxturbonitrous)
wow total ricer... u live your life 15 seconds at a time or what? like the guy mentioned above it is there for a reason.. on a stock b16 vtec never kicks in at 4,500.. noob it may lose power..
09-01-2004, 11:33 AM
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Re: b16a redline at 9,000 rpm but vtec kicks in at 6,200 (bpowa)
stock b16a vtec kicks in at about 5,200rpm and redlines at around 8,200rpm. i wouldn't redline it at 9k rpm whatsoever (from experience).
09-01-2004, 11:33 AM
#7
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this guy has got to be full of it The ECU you are using is a P30. rev limit on a P30 is 8600. dont believe your tach. and if you are actually taking it to 9k then u might wanna get a new head and pistons soon. And Vtec set that low at 4500 will do you know good it will bogg you down trimendously. The way i have figured on 3 B16's that the sweet spot is 51-5200 and this was on a dyno.
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09-01-2004, 11:43 AM
#8
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Re: (JDMlyfestyle)
Damnit. This is why I left this forum and hardly post. NOT ONE OF ANY OF THESE POSTS IS ******* RIGHT!
P30 ECU
Rev limit at 8200 rpm
VTEC at 5500 rpm
Is it that ******* hard to figure out guys? This is basic information that has been around for years. It's not NEWS.
Lets figure this one out. You are seeing your rev limit kick on at approximately 9000rpm. P30 rev limit is 8200rpm. That's 800rpm difference, right? VTEC crosses over at 6200rpm on your tach, P30 sets the cross over at 5500. Do the math, 700rpm off. That's only 100rpm off from what we figured out with your rev limit.
Obviously your tach is off. My friend has a gsr swap in an EK, at 8000rpm, his factory tach reads 9500rpm. Research in the ITR forum, they have similar problems.
P30 ECU
Rev limit at 8200 rpm
VTEC at 5500 rpm
Is it that ******* hard to figure out guys? This is basic information that has been around for years. It's not NEWS.
Lets figure this one out. You are seeing your rev limit kick on at approximately 9000rpm. P30 rev limit is 8200rpm. That's 800rpm difference, right? VTEC crosses over at 6200rpm on your tach, P30 sets the cross over at 5500. Do the math, 700rpm off. That's only 100rpm off from what we figured out with your rev limit.
Obviously your tach is off. My friend has a gsr swap in an EK, at 8000rpm, his factory tach reads 9500rpm. Research in the ITR forum, they have similar problems.
09-01-2004, 12:19 PM
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Re: (WAFFLES)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WAFFLES »</TD></TR><TR><TD CLASS="quote">NOT ONE OF ANY OF THESE POSTS IS ******* RIGHT!
</TD></TR></TABLE>
you are one angry man
</TD></TR></TABLE>
you are one angry man
09-01-2004, 12:31 PM
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Re: (99CivicExCoupe)
DONT mess with your vafc by yourself. you WILL mess it up. it sounds like the "stock" ecu that came with your swap is actually chipped. i got the same thing with my jdm b16. its got a spoon chip in it and the vtec kicks in at 5700 and revlimiter is higher than 8600, i dont go higher than that, so im not sure where its at. if you lower the vtec with a vafc, then all you do is make it switch to the other cam profile. the fuel maps stay until the ecu switches over too. if you want to do a vafc, then get it on a dyno, youll screw yourself over messing with it. just get a new chip for it. at least its set up for you. ive played with a vafc and you ll feel the power go to hell if you lower vtec too much, let alone the check engine lights youll get. if you must lower it with a vafc, then go down to about 5500.
damn. youre screwed in a money race. hold off for a new chip or a dyno tuned vafc.
damn. youre screwed in a money race. hold off for a new chip or a dyno tuned vafc.
09-01-2004, 12:32 PM
#14
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Re: (WAFFLES)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WAFFLES »</TD></TR><TR><TD CLASS="quote">Damnit. This is why I left this forum and hardly post. NOT ONE OF ANY OF THESE POSTS IS ******* RIGHT!
P30 ECU
Rev limit at 8200 rpm
VTEC at 5500 rpm
Is it that ******* hard to figure out guys? This is basic information that has been around for years. It's not NEWS.
Lets figure this one out. You are seeing your rev limit kick on at approximately 9000rpm. P30 rev limit is 8200rpm. That's 800rpm difference, right? VTEC crosses over at 6200rpm on your tach, P30 sets the cross over at 5500. Do the math, 700rpm off. That's only 100rpm off from what we figured out with your rev limit.
Obviously your tach is off. My friend has a gsr swap in an EK, at 8000rpm, his factory tach reads 9500rpm. Research in the ITR forum, they have similar problems.
</TD></TR></TABLE>
i thought the revlimiter was at 8500rpm for stock p30's. redline is 8200rpm. vtec is at 5500 rpm. my tach reads 6000 at x-over and 9000 at rev limiter. obviously it's off by ~500rpm
P30 ECU
Rev limit at 8200 rpm
VTEC at 5500 rpm
Is it that ******* hard to figure out guys? This is basic information that has been around for years. It's not NEWS.
Lets figure this one out. You are seeing your rev limit kick on at approximately 9000rpm. P30 rev limit is 8200rpm. That's 800rpm difference, right? VTEC crosses over at 6200rpm on your tach, P30 sets the cross over at 5500. Do the math, 700rpm off. That's only 100rpm off from what we figured out with your rev limit.
Obviously your tach is off. My friend has a gsr swap in an EK, at 8000rpm, his factory tach reads 9500rpm. Research in the ITR forum, they have similar problems.
</TD></TR></TABLE>
i thought the revlimiter was at 8500rpm for stock p30's. redline is 8200rpm. vtec is at 5500 rpm. my tach reads 6000 at x-over and 9000 at rev limiter. obviously it's off by ~500rpm
09-01-2004, 01:13 PM
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Re: b16a redline at 9,000 rpm but vtec kicks in at 6,200 (bpowa)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bpowa »</TD></TR><TR><TD CLASS="quote">wow total ricer... u live your life 15 seconds at a time or what? like the guy mentioned above it is there for a reason.. on a stock b16 vtec never kicks in at 4,500.. noob it may lose power..</TD></TR></TABLE>
shut the hell up..this was a stupid and none helpful comment..
to you
shut the hell up..this was a stupid and none helpful comment..
to you
09-01-2004, 01:36 PM
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Re: b16a redline at 9,000 rpm but vtec kicks in at 6,200 (jdm98hb)
i had a chipped p28 running my stock b16. vtec kicked @ 5700 and redline was 9????
and yes i took it to 9 grand a few times, once by accident and a few times just for fun....never had a problem
then again...it was chipped by the almighty kenjii
and yes i took it to 9 grand a few times, once by accident and a few times just for fun....never had a problem
then again...it was chipped by the almighty kenjii
09-01-2004, 01:39 PM
#20
Honda-Tech Member
Re: b16a redline at 9,000 rpm but vtec kicks in at 6,200 (spectacle)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spectacle »</TD></TR><TR><TD CLASS="quote">
then again...it was chipped by the almighty kenjii </TD></TR></TABLE>
What does that have to do with anything?
then again...it was chipped by the almighty kenjii
</TD></TR></TABLE>What does that have to do with anything?
09-01-2004, 04:04 PM
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Re: b16a redline at 9,000 rpm but vtec kicks in at 6,200 (WAFFLES)
Dammit are JDM P30's different to USDM?
My JDM B16a with P30 in my EG9, VTEC kicks in at 5800rpm. Im sure i am correct.
My JDM B16a with P30 in my EG9, VTEC kicks in at 5800rpm. Im sure i am correct.
09-01-2004, 04:08 PM
#23
Honda-Tech Member
Re: b16a redline at 9,000 rpm but vtec kicks in at 6,200 (tianporn)
i can vouch for 8200 redline and 5500rom VTEC...i have a JDM B16A SiRII and i'm using a JDM P30.
09-01-2004, 04:14 PM
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Re: (Jlo96Hatch)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jlo96Hatch »</TD></TR><TR><TD CLASS="quote">Vtec wont bog down if set at 4500 i know plenty of people pulling hard as **** with vtec set at 4500</TD></TR></TABLE>
Yes it prob will pull hard at 4500 but not if you don't reset you fuel map. the comp still not gonna dump in a shitload of fuel until 5200 which is what it thinks is the vtec crossover. If you friends are pulling hard at 4500 then they have prob had their fuel systems remapped. but you can't just take a vafc and set vtec to 4500 and automatically be "faster" there's alot mor to it than that. If you install a vafc and you want vtec to engage at 4500 take it to a dyno and have a pro tune it for you.
Yes it prob will pull hard at 4500 but not if you don't reset you fuel map. the comp still not gonna dump in a shitload of fuel until 5200 which is what it thinks is the vtec crossover. If you friends are pulling hard at 4500 then they have prob had their fuel systems remapped. but you can't just take a vafc and set vtec to 4500 and automatically be "faster" there's alot mor to it than that. If you install a vafc and you want vtec to engage at 4500 take it to a dyno and have a pro tune it for you.