my 95 lx sedan has a d15b vtec e with a chipped p28
will not rev past 5000. just sputters and pops very similar to 2 step launch control.
this happens when im driving or sitting still, my spedometor works, car burns oil.
https://www.youtube.com/watch?v=Txod...e_gdata_player
i believe it is the ecu but what sensor or arrangment should i check? i have looked online for days

thank you so much for taking the time to read my post i hope honda tech can help!

 

any CELs?

 

You need to run the correct ECU for the motor. Your motor is cutting out because at 5k, the second vtec solenoid is supposed to open, but even a chipped P28 can't do that.

 

single vtec selenoid. its not 3 stage it is vtec e. 12 valve first stage standard 16v second stage. no cels. bulb is good. comes on for duration of fuel pump when i turn key.
does anyone know if z6 and vtec e? (z1/d15b) vtec selenoids are the same? i have a z6 head with a vtec selenoid

 

bump

 

Bump

 

So is that a no for cel?

 

Nope no cels. Bulb in there is good

 

I'm having the same issue with my 93 and no cel light on, but does come on like normal when I start up, gonna check see if there is a code saved in there by chance

 

Why can't you run the right ecu?

 

I only have my chipped p28 that's what came in the car I have no tuning hardware. I don't have any other ecus. It runs and drives fine until 5k

 

i have a jdm d15b vtec with a p28, it might be a faulty ecu, try another p28 but if its the same just go get it tuned.

 

if it is a jdm d15b yes, the z6 is the closest thing to it. almost all pieces are interchangable

 

now that i saw the video im sure its the ecu. i had the same thing happen to me. i had a faulty p28. i got a different one and tuned the car and voila. i can rev past 5k and open vtec

 

tryed a different ecu didnt work

 

make sure you got all the grounds on the motor, tranny, thermostat etc

 

I have something similar going on, but no resolution. Bogs terribly after 4500-5k. How about if you ease into the throttle. Will the motor then rev past 5k?

 

thats strange. i had the same issues as the video and for me it was the ecu and tune. well good luck ill input if i get any other ideas or suggestions

 

In some parts a P08 isn't very easy to find. My D15b is controlled by a P28 just fine.

Obd1 converted car? Wiring? Did you mention a CEL? Your problem should throw a code.