i bought a civic HB with a b16a2 swapped in it already. Vtec is hitting at 6500rpm. OBD2 ecu. What flashes, or ecu is out there that causes this. Another thing is the rpm seems to be very high. Like if im going 80mph in 5th gear the rpm is at like 5-6krpm.

 

vafc installed?

OBD1 ECU with jumper harness? probably has a chip in it

OR your tach is waaaaaaaaayyyyyyyyy off

 

tach is right. its a obd2, no vafc installed

i need someone to clear this up for me to:
if u have a vafc and u set ur vtec point at a certain level, and when u take that VAFC back out. will it stil l remain the same? or will it go back to stock vtec point

 

Depending on what year civic it is your VSS and the tach signal could be off.

It's kinda hard to tell without more details

 

ive never ridden in a car with a b16 trans, but they say there gears are alot shorter.. there fore most people put ls 5th gears in there b16 trans

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vlc92189 &raquo;</TD></TR><TR><TD CLASS="quote">ive never ridden in a car with a b16 trans, but they say there gears are alot shorter.. there fore most people put ls 5th gears in there b16 trans </TD></TR></TABLE>

What does that have to do with anything?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cambopheonix56 &raquo;</TD></TR><TR><TD CLASS="quote">

What does that have to do with anything?</TD></TR></TABLE>

it has to do with the original posters question...
reading pwns you!

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMDC5r4 &raquo;</TD></TR><TR><TD CLASS="quote">Another thing is the rpm seems to be very high. Like if im going 80mph in 5th gear the rpm is at like 5-6krpm. </TD></TR></TABLE>

 

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

it has to do with the original posters question...
reading pwns you!

</TD></TR></TABLE>
lol yeah thanks... was saying since the b16 gears are shorter.. most likley its normal for him to be at 5-6 grand when going 80 in fifth.

 

80 should be like 4400 depending on what car its in. Tach is off.

 

your tach is way off, you may not notice it in the lower RPMS. It could be that and your VTEC point is a little higher than stock, maybe 5500 or higher. So with your tach being off it makes it seem even higher, my tach is off slightly, at 80mph im at 5k with a type r tranmission.

 

Hey man.

I don't know much about how short the B16 trannys are as I've never done a whole lot of highway miles w/ a B16 tranny.

Though I've definitely done over 100 so I can say for sure that 6k RPM @ 80mph in 5th is insanity...

 

change the cluster

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Crasian &raquo;</TD></TR><TR><TD CLASS="quote">it has to do with the original posters question...
reading pwns you! </TD></TR></TABLE>

Oh god I am an idiot

 

&lt;type-r tranny inside with b16, 3,200-3,500k@70mph

 

In my car its at ~4250rpm at 80mph.

 

yeah i was trying to remember what it was @80, i was thinking around 4,200
to poster, sounds like it's off 1,500 rpms. as to fix's, could be a cluster tach feed wire, distributor. i have a p30 obd1. i don't know how the obd2 is wired, if it goes to the ecm first then cluster. i'm guessing just a straight shot. first thing i would do is check connections at the distributor and cluster, then check the tach. wire for continuity

 

checked everything already. tach works perfectly the speed reading is right too. i tested with one of those police speed things they got sittin on the sidewalk lol. its an si tach/cluster btw

 

My usdm gsr tranny in a 98 hatch reads 4500rpm at 80mph.. My old jdm itr tranny read about 55-5600@80mph....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fishnfst &raquo;</TD></TR><TR><TD CLASS="quote">My usdm gsr tranny in a 98 hatch reads 4500rpm at 80mph.. My old jdm itr tranny read about 55-5600@80mph....</TD></TR></TABLE>

a gsr tranny should be 4000rpm @ 80mph

 

i think its a bad tach,not reading properly,or ecu messed up

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cambopheonix56 &raquo;</TD></TR><TR><TD CLASS="quote">

Oh god I am an idiot </TD></TR></TABLE>haha no worries man

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMDC5r4 &raquo;</TD></TR><TR><TD CLASS="quote">Like if im going 80mph in 5th gear the rpm is at like 5-6krpm. </TD></TR></TABLE>
Change your tach. I know the b16 tranny is short, but its not THAT short.
oh yea, i have a b16 tranny.

 

Try borrowing an aftermarket tach from someone and see if it reads the same.
My D16Y8 goes 80mph@3500 RPM


Modified by trboeclpse98 at 8:59 AM 12/27/2006

 

yeah the Si gears are 77mph is 4000 rpm in 5th gear. Either the tach is off or something in the tranny has been swapped out.
B

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by trboeclpse98 &raquo;</TD></TR><TR><TD CLASS="quote">Try borrowing an aftermarket tach from someone and see if it reads the same.
My D16Y8 goes 80mph@3500 RPM


Modified by trboeclpse98 at 8:59 AM 12/27/2006</TD></TR></TABLE>

Ouch, long gears ftl.