i just recently swapped a b16 into my rex about a month ago...my problem is my vtec hits but theres no kick ( i hope you know what im talking about)...ive done tune ups, changed distributor, oil change but same problem...i tried someone elses chipped ecu and everything was right ...now my question is should i just chip my ecu or find out what's wrong first?? i really need help ... thanks..

i raced an ls integra ( intake, exhaust) and won by one and a half car lengths...someone please tell me this is not right...

 

It could be that you have an automatic B16A.

 

If VTEC activates then I'm guessing you're not having any problems with it... you just need a set of cams, thats all.

 

you want to feel the kick set your vtec switchover @ 4000 rpm

you must have raced someone who knows how to drive the ls teg... just remember that b18 has more torque and someone who knows how to drive hp wont matter

 

If you want to feel the kick, have vtec engage at a higher rpm. If you want the widest power band, you'll probably want to leave it where it is unless you put different cams in or other fun stuff.

 

vtec should not put you in the seat...its should be a steady incline of power when tuned correctly.

 

so i that's how the b16 suppose to run...slower than a ls integra...we drive the same, shift the same...i thought vtec was suppose to pull you a little bit...but i dont even feel a pull...the motor just gets louder....that would be my problem...any suggestions

 

make sure the vtec solinoid is alright

 

i had that problem, i did manual cams, ecu, dizzy, EVERYTHING
vtec made the noise but then it would pull like no vtec was there...i sold it cause i was never able to figure it out

 

aww crap u serious?!?!?...nothin...did you even try a chipped ecu??!?...i did and mine worked....but i dont want to chip my ecu...i just want it to run normal

 

WHAT ECU ARE YOU RUNNING?

check your timing and do a fuel injector balance test.

stop worrying about your ecu; make sure the mechanical side of everything is working properly. (spark, fuel, compression) I'm thinking that since the car ran right with the chipped ecu, that you're running slightly lean, and the fat map on the chip helped you out. That doesn't mean you should chip your ecu, it means figure out what's wrong. I've always heard that the crx fuel pump doesn't agree with an 8000 rpm motor, so think about putting an 90-91 integra fuel pump or a walbro in there. Change fuel filter.

pull the vacuum line off the fuel pressure regulator and see if your car runs a little better.

any idling problems?

adjust valves.

EDIT: actually one of the best first tests you should do is test your ported vacuum. see what it's doin, like bouncing around, etc..


Modified by drussell4801 at 6:51 AM 10/28/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92integra_gs &raquo;</TD></TR><TR><TD CLASS="quote">you want to feel the kick set your vtec switchover @ 4000 rpm</TD></TR></TABLE>

vtec switchover set low will make the car bog.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blackcomet &raquo;</TD></TR><TR><TD CLASS="quote">i raced an ls integra ( intake, exhaust) and won by one and a half car lengths...someone please tell me this is not right... </TD></TR></TABLE>

1.5 car lengths is equal to like 1 second in the quarter mile(conservative estimate). did you start to pull on the integra at higher speeds? like over 80mph?

 

i changed the fuel filter...but not the fuel pump im going to try that next...do i need to modify it a little bit or is a straight drop in...

when i raced the integra the whole time he was ahead of me....never once was i in front...

 

oh yeah i run a pw0 ecu ... i heard they were crap compared to pr3 but i dont know much...thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drussell4801 &raquo;</TD></TR><TR><TD CLASS="quote">

vtec switchover set low will make the car bog.</TD></TR></TABLE>

opps my mistake .... i loss the damn paper of how to set vtec crossover and dont remember if it was high or low... i now remember... track car set there at 4200rpm for a steady incline power for vtec crossover... but to feel the vtec they set it 5k to 5200 rpm... but if you set it this high you are just missing out the first half of the vtec power, even though it seems like you are getting the pull.. that is why stock vtec crossover is optimum... the best way to check if you are getting the power you need is to dyno the car...

 

depending on what you have and what intakemanifold you are running/cams setup vtec should kick in different on a lot of cars. Witht he gsr ecu in my b18c with ctr and skunk2 manifold it is stock at 4800 rpms I think. It felt like crap though. Ask hondaguyef. He redid a map for me on a p28 gsr stock map with vtec engage at 5000 rpms and it just feels alot better. I havent got to try at track but I will be trying both at track soon as i get my oxygen senor problem fixed.

DEF

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drussell4801 &raquo;</TD></TR><TR><TD CLASS="quote">I've always heard that the crx fuel pump doesn't agree with an 8000 rpm motor</TD></TR></TABLE>

Funny, my crx loved my B16 at 8000....