exotik4doorcivic

went to the dyno low #'s and seems like vtec not working
d16z6 in a dx civic
14b turbo
tuned with chrome pro currently 8 lbs
450 cc injectors
full msd ignition (cap wires coil)
ngk v power gapped at .28
2.5 inch piping thermal exhaust gutted cat
act 12 lb flywheel/stage 2 clutch/pp

i only got 160 whp and 140 tq wtf??

the question is my speedometer only works sometimes not all the time and it wasnt working at the dyno pull, and ive heard if your speedometer does not work then niether does your vtec

also i hooked up a vtec led and (power went to solenoid green/yellow and groungd went to 330 ohm resister then to ground)
the led does not come on????
any help is appreciated


Modified by exotik4doorcivic at 2:29 AM 10/13/2006


Modified by exotik4doorcivic at 4:41 AM 11/1/2006

jdmjaser

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by exotik4doorcivic &raquo;</TD></TR><TR><TD CLASS="quote">[B]

the question is my speedometer only works sometimes not all the time and it wasnt working at the dyno pull, and ive heard if your speedometer does not work then niether does your vtec

</TD></TR></TABLE>

who told you that?? that guy must be really dumb...my speedo didnt work for 1yr..and my vtec work all the time..

maybe your oil is low?

hope you find out whats wrong with your whip!

exotik4doorcivic

https://honda-tech.com/zerothread?id=1758527

i saw it on here ^ when i searched, it said you cannot rev your car and hit vtec


so vtec wont work unless your rolling and going past 26 mph

Slamaccord

iTrader: (1)

The Ecu has to recieve input from the VSS in order to crossover into vtec.
So if your speedo is not working obviously your car is not going into vtec.

Syndacate

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Slamaccord &raquo;</TD></TR><TR><TD CLASS="quote">The Ecu has to recieve input from the VSS in order to crossover into vtec.
So if your speedo is not working obviously your car is not going into vtec.</TD></TR></TABLE>

Yes, it's not the speedo that stops it it's the VSS, you have to be going over some speed for VTEC to engage (like 15mph or some **** like htat) - point being, no VSS/bad VSS = no VTEC and no speedo O.o

Change out the VSS man...if it happens /w the new ones check the wires from the ECU to the VSS.

exotik4doorcivic

the trasmission i have on my car is a dx and the wiring engine harness is for an ex should i get a ex vss??

sol2hatch

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Slamaccord &raquo;</TD></TR><TR><TD CLASS="quote">The Ecu has to recieve input from the VSS in order to crossover into vtec.
So if your speedo is not working obviously your car is not going into vtec.</TD></TR></TABLE>

that is not true, the speedo itself can be messed up and the VSS be perfectly fine. happened to me

Rock Meathammer

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by exotik4doorcivic &raquo;</TD></TR><TR><TD CLASS="quote">the trasmission i have on my car is a dx and the wiring engine harness is for an ex should i get a ex vss??</TD></TR></TABLE>

No, they are basically the same

exotik4doorcivic

the plug on mine seems like it doesnt clip in it doesnt make that click sound it just goes on, and my speedometer works sometimes but when it does work it bounces around


what do you think i should have for horsepower with vtec working

GiMpInThaCiv

did you remember to put the ground chassis wire back onto the transmission? This could be your problem, bad ground. my speedo jumped when i did my tranny swap. forgot to put the ground on, put it on works great.

fishnfst

Post your dynograph.. What were your afr's like? How much timing were you pulling.. Running rich would produce numbers like you have...

What ecu are you using? It sez you have a z6 in a dx chassis. Did you have vtec originally? Is it even wired? Sorry for basic questions but just wondering...

exotik4doorcivic

im running the p 28 ecu for the d16z6 engine and i wire the solenoid to the ecu, the car is tuned with chrome pro and i have 12:1 afr

i have a good ground to the transmission,

92ehatch

dont replace the vss just yet.

clean it out first. my vss got gummed up with crap and it stopped working.

took it out, cleaned it, re greased it, put it back together, cleaned the connections (electrical) and all was good

if that done work...replace it and see what happens

92'si

do you have a buddy witha cluster? try to switch em to check if its just your speedo, so you can determin if your vss is bad.

F20Cteg

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by exotik4doorcivic &raquo;</TD></TR><TR><TD CLASS="quote">
tuned with crome pro currently 8 lbs....

the question is my speedometer only works sometimes not all the time and it wasnt working at the dyno pull, and ive heard if your speedometer does not work then niether does your vtec
</TD></TR></TABLE>


Sorry to say, but whoever tuned your car is a retard and should never try to tune a car again. The VSS VTEC check could have been disabled and the tuning could have been done correctly with VTEC engauging.

&gt;&gt;&gt;&lt;&lt;&lt;

exotik4doorcivic

my cars speedometer worked during the tune so he didnt need to do that, but my #s before were about 170 and i only had a 2" exhaust

i went back to get dynoed again because i got a 2.5 inch exhaust and i lost 5 whp so thats what i was wondering... i should be at 180 whp at least

GiMpInThaCiv

well, by upgrading you could have lost power, you never know. so i'm pretty sure your car is fine. Anything can happen between dyno pulls. Meaning the time you had your car last dynoed to now. Put the old exhaust on and try it. see if theres a difference. It could have lowerd you number with 2.5 exhaust. maybe less backpressure made it decrease in power but that really shouldnt be the case with a turbo setup it should be the opposite but you never know. I also have the thermal exhaust and people say that greddy flows a lot better. I have a turbo ek hatch with the thermal exhaust. I knew this before i bought it. I love the sound of this though thats why i got it. If vtec isnt working im pretty sure you could tell the differance / sound right off the bat.

exotik4doorcivic

i only have a sohc vtec so i cant hear it especially with a thermal and i didnt replace the exhaust i just had the piping from 2 inches to 2.5 inches so the loss in power should be the result in no vtec right?? what power do you think i should be seeing with this setup???


i did a compression test before the dyno and got 175 across the board

Syndacate

Wow so muc hshit here about other stuff - ALL evidence and problems points to the VSS.

Clean it, if your speedo doesn't work, change it (use the one for your tranny...may have to do some wire sodering/crimping - but get the one for your tranny, not the harness...unless the part #'s are the same in which case it shouldn't matter.

After that, your speedo and VTEC should work, then reanylize everything...re-tune it.

You said you have a VTEC light and it's not on...your speedo malfunction...all evidence that your VSS is fucked up.

Change it.

GiMpInThaCiv

^^^^

Luserkid

If its the VSS it will throw a code (code 17). Unless you post up your dyno sheets we cant tell you anything. Also your speedo could be not working due to A. bad wire, B. broken speedo before its the VSS problem. Stop asking what people would think your car will make until you post dyno sheets. For your VTEC light run the ground straight to a ground.

F20Cteg

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Luserkid &raquo;</TD></TR><TR><TD CLASS="quote">If its the VSS it will throw a code (code 17).</TD></TR></TABLE>


Not true. A VSS could malfunction mechanically and still have internal connections. Seen it many times. ECU will not know that the VSS is malfuntioning.

fizeks

at one point i had no dash cuz my dash harness fried alot of wires (due to a big short) and i had nothing but a steering wheel especially no cluster.... i still had to drive it since it was my only car to work.. but i always had vtec. never had a problem of it not working

The_Todd

I would clean out your vss, also check your oil level.

I have a greddy 15g on a d16y8 on 7psi and make 169whp and 170wtq.

exotik4doorcivic

well when i went to check the vss it felt loose and i this is what happened


the big part is supposed to be inside the tranny and you can see whre the vss is bolted wtf??