Modified by lsvtec101 at 12:45 PM 12/18/2004

 

I am also building an LS VTEC. I am going to run the p28 ECU which doesn't have a knock sensor circuuit so you don't need to worry about it. If you use the p72 or the p30 you will have to install and wire up the knock sensor. hope this helps.

 

yeah ill be using a p28, but for my inspection i need to run obd2. anyone know if it will throw a cel if its in the alternator bracket?

 

I have seen the alternator bracket method done before with no code thrown

after inspection go OBD1

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaguyef &raquo;</TD></TR><TR><TD CLASS="quote"> I have seen the alternator bracket method done before with no code thrown </TD></TR></TABLE>

nice!


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaguyef &raquo;</TD></TR><TR><TD CLASS="quote">after inspection go OBD1 </TD></TR></TABLE>

chipped kenji p28 waiting to be put in

 

i also used the alternator bracket. what i did was i put jb weld into the hole and then just put my knock sensor inside of it, and then just let it heal overnight.

 

do you have to tap a hole where the alternator bracket is in order to screw in the knock sensor or is there a hole where u can just screw it in?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Phatch99 &raquo;</TD></TR><TR><TD CLASS="quote">do you have to tap a hole where the alternator bracket is in order to screw in the knock sensor or is there a hole where u can just screw it in?</TD></TR></TABLE>

would realy like to know this also. have just got a b18a block and i am ready to start the lsvtec swap, in a 90 crx si with a pr3 eru and will need to have a knock sensor plugged in. please help with any infor on how to....

 

you have to drill/ rethread 12mm x 1.25 the alternator bolt hole

 

on my ls/vtec i had a nut welded to the plug on the back of the block that worked well for me.. never had any knock sensor code ran the engine for 3 years. just took it out last week and it was still fine

 

just ground it

 

if the car is a ls don't need to use a knock just run the car without it to pass inspection then plug the P28 back in. if you have a gsr ecu then you could put it on the alt bracket hole but I would not drive on it long like that.

 

knock sensors overrated.

 

Does uberdata have a feature to turn the knock sensor off?

 

i gotta obd1 b16 block and a obd2 gsr head. i drive a 00 ex and i wanna put it in . but if i leave the knock sensor unplugged will it harm anything besides me throwing a check engine light? but when inspection comes what would i have to do to wire up a knock sensor or have the check engine off so it can pass? thanks!

 

you can manually wire it if you have a dohc vtec, i dont think p28s have a knock sensor...but unless the ecu can read it, it wont put a CEL out anyway. its easier to get a chip for like $20 and jump it altogether, i think.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boost fed ls &raquo;</TD></TR><TR><TD CLASS="quote">Does uberdata have a feature to turn the knock sensor off?</TD></TR></TABLE>

Uberdata, Crome, etc. etc. They all can make your ECU not look for the knock sensor.
Mine doesn't have knock, ELD, vtec speed (cable tranny) or vtec coolant checks.
Chipped p28

HTH
Ratliff

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aut0tek &raquo;</TD></TR><TR><TD CLASS="quote">

Uberdata, Crome, etc. etc. They all can make your ECU not look for the knock sensor.
Mine doesn't have knock, ELD, vtec speed (cable tranny) or vtec coolant checks.
Chipped p28

HTH
Ratliff</TD></TR></TABLE>

ok thanks

 

i don't know if I have a knock sensor or not...is it on the block or the head? I got a obd-2 ls block with a obd-1 b16 head... do you need a knock sensor? and wat does it do? any help would be appreciated!!! thanks in advance!

 

bump for info plz

 

 

I'm pretty sure the LS blocks never had knock sensors, but I might be mistaken, anyhow, it's on the block, close to the alternator bracket, right up top where the head meets the block.

Ratliff

 

Im building a ls vtec. B18a1 block with a b16a sir-1 head(pr3 ecu). Will i need a knock sensor?


Modified by 93 InTeGrA Rs at 8:33 PM 2/7/2005

 

Only if you want one. Otherwise just get an ecu that doesn't look for one, or chip an ecu and disable it.