what specific plugs and sensors do u need that the ls does not have to connect and wires vtec ? i have a 99lsblock and 95 jdm b16 head with obd 1 conversion harness i have vtec solenoid . do i need iacv, iab what don't i need sensor and plug wise will getting a b18c1 engine harness help with connecting wires

 

Okay say you're rewiring your LS harness (if you have one) to DOHC VTEC, all you need to add is VTM (VTEC pressure) and VTS (VTEC)... You'll STILL need every other sensor a GSR harness has besides IAB (since you're running a PR3 cylinder head)... Also it's not that big of a deal but if you are getting a GSR harness (I just reread your post) then make sure it corresponds to your dizzy, injectors, alternator, etc. or you'll be doing more rewiring... '94-95 GSR Will work with your '94-95 dizzy, OBD1 injectors, and nonOBD-OBD1 alternator (as plug in play)... '96-2001 GSR works with an OBD2 (single plug) dizzy, OBD2 injectors, and '96+ alternators... I think I've said waaay too much so sorry but I hope this helps... Peace

 

so u said i do need the gsr engine harness i am little confused i have still have my obd2 engine harness i just got the obd 2-1 conversion harness for the ecu everything else is obd 2 injectors, dizzy, alternator ,etc the dizzy is a type r obd 2 so what r the sensor that a gsr wire harness that a ls does not

 

Okay my bad, sorry I confused ya... Just use your existing OBDII harness and if necessary add in your VTEC pressure and VTEC lines... That's really all there is too it... Sorry too if I missed this but what kinda car do you have? Civic? Teg? In any case your harness can be modified to fit so don't be worried that you'll have to buy a GSR, ITR, etc... Like I said before, you still need to keep your IAC connectors but don't worry about adding an IAB line (you don't have a GSR IN manifold so there's no need)... If you're running an OBDI jumper then if you want, you can pull out the CKFS that your LS bottom end has... I may still be totally not helping you so let me know if you need anything else... Latez

 

it helps i have 99ls 4dr teg my bad i am using a aebs manifold it has all the lines moved to the back so i don't need the iab sensor plug? i was straight with info till the last part about taking the obd 1 jumper and something from the ls harness now i am a little lost not trying to throw codes

 

Oh okay, I understand a little bit more now... I just wanna double check but you're not confusing the IAC and the IAB are you... The IAB will only be ran if you're running the GSR IN manifold... What it sounds like you're describing to me by saying no lines, etc. are on the back of the AEBS manifold would mean that you don't have to run an IAC (which is fine because some manifold are like this)... The only problem is if you're running a stock ECU then you can't just cut off the IAC connector as you'll throw a code 14... The part at the end that I confused you with was just if you want to eliminate more wires (but there is no need)... OBDII cars (i.e you're '99 LS block) run a CKFS (crankshaft speed fluctuation sensor) on their oil pumps which monitors the crank speed... OBDI ECU's don't look for this so if you're running an OBD1 ECU and jumper you could take out the wiring for this sensor... Like I said it's not that big of a deal and I probably wouldn't worry about it... In any case think about what you are going to cut if you're planning on eliminating connectors... Just my $0.02

 

i not cutting ne thing i just wanted 2 make sure the ls engine harness had an iacv plug on it or i was checking 2 see whether i need 2 splice ne thing into the ls harness to not thru codes so for the obd 1 crank fluctation sensor will i still be able2 bypass or do i still need it so if i cut off the iac i will throw codes i thought the ls harness has an intake air control valve already ?

 

will this work check out this thread u said i need this part and the sensor the goes to it right its from a b16 https://honda-tech.com/zerothread?id=746247

 

Okay, I think I understand... If you don't have an IAC for your new AEBS manifold then YES you'll need one (probably just buy the one in the link you sent me)... As for the wiring ALL you need to add into your LS harness will be VTEC and VTEC pressure... The LS harness contains everything else you'll need... Forget what I was saying about eliminating connectors... From the way it was worded at the beginning I thought that's what you wanted to know (basically what you could take out)...

 

i getting closer 2 understanding i was reading my haynes manual and it has all teg 96 and up have iacv already ?

 

i just called acura and they verified ls 96-99 all already have iacv in car already next 2 the t/b

 

i used a 94 LS engine harness on a 94 GSR block w/B16 head.
the only wires i had to run were the couple for the VTEC solenoid/pressure switch, including the plug which i got from a spare SOHC VTEC wiring harness i had laying around. i ran the wires and pins from the solenoid to the engine harness plugs, and then through the firewall to the ECU.

but i see you are using an OBD2 block (i'm assuming an OBD2 chassis too) so i guess the conversion harness comes into play. also i noticed you mentioned the AEBS IM. i personally have not used that IM yet, so i'm not sure about the IACV location etc. but i don't see why it wouldn't have one located in the stock position area, whether OBD1 or OBD2.

don't know if any of this helps...

 

Yea, every Honda motor that I can think of runs an IAC... The only other idle control would be the FITV which bypasses air past the TB when the motor is cold... That's nothing to be worried about tho as it's not electronic... YOU have IAC wiring unless your or someone cut it (which I highly doubt)...

 

yep

 

no 1 has cut it so i should be straight yes it is an obd 2 chassis 99 teg 4dr

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 99lsvtecauto &raquo;</TD></TR><TR><TD CLASS="quote">what specific plugs and sensors do u need that the ls does not have to connect and wires vtec ? i have a 99lsblock and 95 jdm b16 head with obd 1 conversion harness i have vtec solenoid . do i need iacv, iab what don't i need sensor and plug wise will getting a b18c1 engine harness help with connecting wires </TD></TR></TABLE>

a lot of these guys answered your question. I'll just share the info I gave to you via IM:

ok I'll start from the top.
Since your car is OB2b, you'll want to stay OBD2b engine wire harness-wise, just to make life easier on yourself. So, you CAN reuse your LS engine harness even though you're using an OBD1 B16A head. All you have to do is transfer a few parts from your 99 LS head over to the B16A head, and those parts would be these items:

- LS injectors
- complete LS fuel rail (if the b16 head doesnt have one)
- LS IACV (should be able to bolt to the back of your AEBS intake manifold)
- LS IAT (if your B16 doesnt have one)
- LS throttlebody assembly

reuse everything else thats still attached to your LS block (alternator, etc).

In my opinion, you don't need a GSR engine harness, because you can just reuse your LS harness and add the wires to the VTEC solenoid (VTS) & pressure switch (VTPS), and save money at the same time.

TIP: You can actually splice the VTPS positive wire to the VTS wire, then ground the negative VTPS wire to the solenoid itself, and not have have to worry about finding a VTPS plug.

Since you have a Type-R dizzy, it makes it that much easier to reuse your LS engine harness, as it will plug right into the Type-R dizzy.

And since you're using an OBD1 conv. harness + ecu, you don't have to worry about a knock sensor, depending on which OBD1 ecu you're planning to use. I hope you're using a reprogrammed P28 ecu or some other reprogrammed SOHC VTEC ecu, or a reprogrammed OBD1 B-series DOHC VTEC ecu with disabled knock sensor, otherwise, you're gonna have problem since your LS block isn't knock sensor equipped. What OBD1 ecu are you planning to run ?

 

i am running a reprogrammed p28 ecu i also have some prelude obd 2 97-77 injectors that are supposed 2 be plug and play thanks for the feedback feel free to add more if ne comes 2 mind