Turbo O

if so how it did work out?
Did it accept the obd1 conversion?
did you have to change the distributor?

boosted k20

i have (actually a 2001 accord). the step down harness plugs in with no problems and i used the stock dizzy.


Heres a before and after shot from removing the stock exhaust and putting a full 3" exhaust and a quick retune

Rickdrizzle

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted k20 &raquo;</TD></TR><TR><TD CLASS="quote">i have (actually a 2001 accord). the step down harness plugs in with no problems and i used the stock dizzy.


Heres a before and after shot from removing the stock exhaust and putting a full 3" exhaust and a quick retune

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

You gained close to 100whp from switching to a 3"?

Rob03Pro5

Look at that Vtek - yo lol

Turbo O

well heres my problem.
the cars starts fine on its oem ecu.
But as soon as I use the obd1 jumper harness it wont start on any ecu.
I also put in a sohc non vtec ecu from a 2000 civic dx and it wont start either. (not sure if its supposed to)
So the only ecu that works it the oem stock one.
Im starting to think I got a "dud" jumper harness.

any inputs?

Semnos

Does the CEL come on with the convesion harnass and the obd1 ecu?
You should work out the CEL's and disable the vtec pressure switch while you're at it.




Modified by Semnos at 8:17 AM 8/20/2008

boosted k20

thats correct. the car before had stock exhaust with stock cat. we took the cat out and the 1st pass it was in the 290's whp on 8 or 10 psi, i forgot how much exactly

boosted k20

oh i think i did have to rewire and change the IACV and convert it to a 2 wire

Turbo O

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted k20 &raquo;</TD></TR><TR><TD CLASS="quote">oh i think i did have to rewire and change the IACV and convert it to a 2 wire</TD></TR></TABLE>

So does this mean the car wouldnt start with the stock 3 wire IACV???

boosted k20

is ur car a V6 or a I4?

twkdCD595

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted k20 &raquo;</TD></TR><TR><TD CLASS="quote">thats correct. the car before had stock exhaust with stock cat. we took the cat out and the 1st pass it was in the 290's whp on 8 or 10 psi, i forgot how much exactly</TD></TR></TABLE>

not to get sidetracked but that is an unbelieveable gain for only removing the exhaust. you did nothing but touch up the tune... not more boost or anything else?

what turbo btw, obviously something of decent size from the looks of a 100+whp gain.

Rob03Pro5

^^ Agreed.

I've never seen an exhaust mod that made that much hp - even on much higher HP applications.

Turbo O

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted k20 &raquo;</TD></TR><TR><TD CLASS="quote">is ur car a V6 or a I4?</TD></TR></TABLE>

Turbo O

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted k20 &raquo;</TD></TR><TR><TD CLASS="quote">is ur car a V6 or a I4?</TD></TR></TABLE>

F23 = I4

boosted k20

sorry lol me = dumbbutt

Turbo O

so where can I find a diargam for the rewiring of the IACV?
also how did you fit it to the oem IM?

boosted k20

our mechanic used a OBD1 IACV from an accord motor. he did have to modify it in order for it to bolt up to the stock manifold. remove ur upper intake manifold plenum so u can work with it better to make the IACV fit.

U will need to remove two pins on the stock engine harness by the ecu to make the IACV work with a OBD1 ecu and also change the plug in the engine bay to a 2 wire plug instead of 3. Just do a search on honda-tech for it. thats where i found it.

oh and to the other guys, only the exhaust was changed and a retune was done on the car. i was suprised myself that the car made an extra 100whp with only an exhaust change. the stock exhaust w/ da dat held a ton of power back

twkdCD595

interesting, so as not to ***** this thread up anymore (sorry OP)... you should make a post about your setup in the accord forums. interested to see more.

Turbo O

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted k20 &raquo;</TD></TR><TR><TD CLASS="quote">our mechanic used a OBD1 IACV from an accord motor. he did have to modify it in order for it to bolt up to the stock manifold. remove ur upper intake manifold plenum so u can work with it better to make the IACV fit.

U will need to remove two pins on the stock engine harness by the ecu to make the IACV work with a OBD1 ecu and also change the plug in the engine bay to a 2 wire plug instead of 3. Just do a search on honda-tech for it. thats where i found it.

oh and to the other guys, only the exhaust was changed and a retune was done on the car. i was suprised myself that the car made an extra 100whp with only an exhaust change. the stock exhaust w/ da dat held a ton of power back</TD></TR></TABLE>

what two pins do i have to remove?
I found this diagram but its based off the Civic and Interga, so which one should I go off?

http://www.phearable.net/tech/...2.jpg

Ive done this before on a 2000 civic, but the repinning was different. I was able to place B6 into B23 easily since B23 was empty. On this Accord there is already a wire in B23. so If Im still suppose to switch B6 into B23, then what do i do what the wire that came from B23?? Or do I just leave it the way it is?

The link above also mentions something about repinning the fuel pump. Do u think this could be why the car doesnt start. I have NO CEL anymore.


Modified by Turbo O at 3:03 PM 8/21/2008


Modified by Turbo O at 3:43 PM 8/21/2008

Turbo O

What if I just wanted to run direct wires for the OBD1 ecu to the 2 wire IACV.
I know one pinout is A9 which should be the positive.
So what would be the negitive for the 2 wire IACV?
where does it pin into the ECU?
also does any one knows if its a 5V ground? If so couldn't I attach it to another ground, like the main ground?

boosted k20

i recall having having an issue with pin B23 as well. there was a wire already in it. my mechanic did this last year so i dont remember exactyl what he did. i will give him a call in a little bit to see if he remembers.

But if i were you i would run the wire from the IACV straight from the engine bay to the OBD1 Jumper harness to make things easier.

and about the imobilizer, i dont think u need to do n e thing about it. thats only if u r using a OBD2 ecu

Turbo O

well i finally got the IACV issue worked out.
the car starts up fine.

I do know to know however if you needed to use a resistor box for the bigger injectors. The reason I ask is because on some cars that I've done would work fine without even tho they were a different impedence. This car however run super super rich, no matter what size I resize the injectors for.

boosted k20

if u have low impedance injectors u need to run a resistor box. if u dont u will fry the injector driver in the ecu eventually.

what size injectors r u using? the accord above that i tuned was run n 450cc i believe (maxed out) If u want the .bin let me know (i only tune on crome GOLD so if u dont have a crome dealer license u wont be able to save the map as a .bin. you can only burn my map.)

wuchang

I need help on my setup...for some reason I'm running a chipped p06 and it isn't idling right..surges....is it the iacv? N how do i fix it...diagram? Directions? Thanks