so i just got a jdm d15b in my 96 ex i was checking out the motor and it only revs to 6000 rpm's wats up with that?????????

 

what ecu do you have? any check engine lights?

 

wat ever ecu comes on the ex and yea but its cuz the sensor on the intake is too hot or some thing like that and cuz my speedo dont wrk

 

any one????????

 

My D15B7 reved to 8,200...HAH! It was like that when I got the car....

 

wtf this motor sux du i need to get the po8 ecu for that motor

 

mine doesz the same thing. p05 with a z6.... so... i dunno... i need a p28....

 

Its cause its 3-stage VTEC, i have the same motor, you need to have VTEC wired up in order for it to rev past 5700, or else it will hit it like a limiter. If i knew exactly why it did this, i would tell you, but i dont. All i know is you must wire up VTEC in order for it to work correctly.


Im currently running it No problem at all using an OBD2 (vtec) wiring harness and OBD2 (VTEC) ECU. Im only throwing a CEL for crank angle sensor.

 

well cude it be cuz i tuck off the two selenoids and put the one from my old d16y8 or some one told me that i should get a po8 ecu?????

 

i have the same motor in my ej1 with the p28 ecu im hitting @ 7500 rpm

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by leroyb &raquo;</TD></TR><TR><TD CLASS="quote">well cude it be cuz i tuck off the two selenoids and put the one from my old d16y8 or some one told me that i should get a po8 ecu?????</TD></TR></TABLE>

woahh no no, one runs the 12v to 16v mode, you do NOT want to replace the dual solonoids at all! Put it back on, thats why it wont rev past 6000, its only engaging one stage.

 

well even if he doesnt have the three stage then i still would have left the dual solonoids on.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yoffer &raquo;</TD></TR><TR><TD CLASS="quote">well even if he doesnt have the three stage then i still would have left the dual solonoids on.</TD></TR></TABLE>

Ok, heres the deal.

It has a dual solonoid becuase its 3 stage, it activates twice thru-out the RPM range, once at 2500, to goto normal 16v, then again at 5700, to engage full blown VTEC. Under 2500 it runs an economical 12valve mode. No other motor made by honda ( as far as i know) comes with a dual VTEC solonoid, so you wont see them on any other motor (again, as far as i know) except the JDM D15b.
Every other SOHC and DOHC motor that comes with VTEC has a single solonoid. ( Excluding I-VTEC of K-series, im not sure how they are setup)

 

Below 2500rpm and with gentle accelerator pressure, neither pin gets actuated. The engine operates in 12V mode with very good fuel combustion efficiency. When the right foot gets more urgent and/or above 2500rpm, the upper pin gets actuated. This is the VTEC-E mechanism at work and the engine effectively enters into the '2nd stage'. Now D15B 3-stage works in 16V mode (both intake valves works from the same mild cam-lobe).

Stage 2 operates from around 2500rpm to 6000rpm. When the rpm exceeds 6000rpm, the VTEC mechanism activates the wild cam-lobe pushing the engine into the '3rd stage', the power stage. Now the engine gives us the full benefit of its 130ps potential !

The 3-stage VTEC D15B engine is used on the current EK-series JDM Civic/Civic Ferio VTi/Vi together with Honda's new Multimatic CVT transmission. Stage-1 12V or "lean-burn" operation mode is indicated to the driver by an LED on the dashboard. The 2500rpm cutover from lean-burn to normal 16V operation in fact varies according to load and driver requirements. With gentle driving, lean-burn can operate up to 3000rpm or higher. Stage-3 may not always be activated. The Multimatic transmission has a selector for Economy, Drive, and Sports mode. In Economy mode for eg, the ECU operates with a max rpm of around 4800rpm even at Wide-Open-Throttle positions.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by uneek360 &raquo;</TD></TR><TR><TD CLASS="quote">Below 2500rpm and with gentle accelerator pressure, neither pin gets actuated. The engine operates in 12V mode with very good fuel combustion efficiency. When the right foot gets more urgent and/or above 2500rpm, the upper pin gets actuated. This is the VTEC-E mechanism at work and the engine effectively enters into the '2nd stage'. Now D15B 3-stage works in 16V mode (both intake valves works from the same mild cam-lobe).

Stage 2 operates from around 2500rpm to 6000rpm. When the rpm exceeds 6000rpm, the VTEC mechanism activates the wild cam-lobe pushing the engine into the '3rd stage', the power stage. Now the engine gives us the full benefit of its 130ps potential !

The 3-stage VTEC D15B engine is used on the current EK-series JDM Civic/Civic Ferio VTi/Vi together with Honda's new Multimatic CVT transmission. Stage-1 12V or "lean-burn" operation mode is indicated to the driver by an LED on the dashboard. The 2500rpm cutover from lean-burn to normal 16V operation in fact varies according to load and driver requirements. With gentle driving, lean-burn can operate up to 3000rpm or higher. Stage-3 may not always be activated. The Multimatic transmission has a selector for Economy, Drive, and Sports mode. In Economy mode for eg, the ECU operates with a max rpm of around 4800rpm even at Wide-Open-Throttle positions. </TD></TR></TABLE>


THANK YOU

 

ok well how du i hook up the selenoids du they just hook up to the wireing harness or du i need a different one and the selenoids dont come with plugs just some metal things at the end

 

haha wtf

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by leroyb &raquo;</TD></TR><TR><TD CLASS="quote">well cude it be cuz i tuck off the two selenoids and put the one from my old d16y8 or some one told me that i should get a po8 ecu?????</TD></TR></TABLE>

why?

*edit* learn to use spell checker btw

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sageuvagony &raquo;</TD></TR><TR><TD CLASS="quote">My D15B7 reved to 8,200...HAH! It was like that when I got the car....</TD></TR></TABLE>

Dude, teach me! That is 2k over redline.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Dude, teach me! That is 2k over redline.</TD></TR></TABLE>

He prolly has a chipped ECU.

 

yeah, but i find that crazy. maybe its just me. maybe im just stupid. who knows.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by leroyb &raquo;</TD></TR><TR><TD CLASS="quote">ok well how du i hook up the selenoids du they just hook up to the wireing harness or du i need a different one and the selenoids dont come with plugs just some metal things at the end</TD></TR></TABLE>

The need to be wired manuely

- Red to red

- Ground the black &lt;-- Strip it and ground it under the Mounting bolt for the VTEC solonoid.

- Green/yellow to green/yellow

pretty straight forward.

 

ok. does a p05 ecu have vtec capability? cuz in my 94 ex. with a p05. nad a z6 motor. it hits at 6 as well. but my vtec doesnt work either right now cuz my speed sensor... cuz that be a problem?... i dont mind running without vtec but is that why im limiting that soon? and also.
code 43. fuel system check and oxygen sensor.

does that mean that my pressure is too low? or sumthn. and i no right now my exhaust is clogged but im puttin one on. should that fix the o2?

 

p28 + 4 wire o2 sensor= problem fixed

 

im usin the z6 harness with a 4 wire o2. but i guess that i need the p28 instead of the p05?