How to do obd2a to obd1 conversion.+update.

This is how to do obd2 to obd1 conversion. Its a simple straight forward how to.

[@Commentbelow12]

The speed at which u complete work mindboggling. Thumbs up

[@JamesDguy]

Now that i look back at it im just as shocked!

[@mattmac30]

I use the same obd2 to obd1 conversion piece. I actually am using a stock obd2b harness.. converted all the plugs to obd1.. then had to modify that harness for the h22a1 engine when I got that. Turned out great. Good note is to make sure that conversion piece is plugged in snugged. My first start up didn’t happen because it wasn’t plugged in tight enough.

[@JamesDguy]

Yea for sure. Thought I mentioned that in the video to make sure its fully connected. I might have failed to mention it Idk but deff good advice.

[@tammutab6110]

I have caprice 1994 obd1 12 pin connector i tried to scan with bluetooth i used obd2 to obd1 adapter but i doesn work how does work? is there way to convert obd1 to obd2 other than using obd2 to obd1 adaper thanks

[@mohammadqadri5065]

hey man a small question, will the obd1 ecu work with the obd2 distributor

[@Diablos809]

those headers are beautiful holy hell

[@Wreckedekcoupe]

I have a 00 with obd2b to obd1 jumper with a chipped p28 as well. Nice upgrade bro!

[@JamesDguy]

My lord it made a huge difference. Like I felt like a p05 8 valve engine and now it feels how it should.

[@chrisfitzgerald2524]

Where did you get the ecu from?

[@Wreckedekcoupe]

@@chrisfitzgerald2524 92-95 ex models manual preferred but I believe any obd1 board can be converted to vtec and manual as well to suit your needs.

[@noizyvoid5320]

I've got a an 00 as well and was wondering if all I need is the harness and the p28? Do I need to do anything else or is it kinda just plug and play

[@yuphengvang1254]

And the engine harness you're using is all obd2 correct? No swapping harness or anything? I've got a b16a2 obd2 and i'm trying to convert it to a obd1 ecu but my question is .... - do i need to convert the dizzy from obd2 to obd1 IF I do convert the ecu to obd1?

[@gameing4life639]

Did you figure it out?

[@NorimitsuMaik]

Why does the P3X has 2 Connectors? U have got like 4. Why does the D14A3 has only have 2 Connectors? Does the Conversion jumper even work on a D14A3? Someone that can explain me?

[@danyyson]

Moore I have a 98 EX D16Y8 which ecu should I run ?

[@sullysellsslabs3127]

Hey I have a 97 integra ls but I have a b16a swap so it’s a obd2 to obd1 and a cel popped up and the obd2 scanner obvisouly isn’t scanning it, how do I find the code

[@nobel_del_mar_racing]

If you're still using the auto ECU the idle will fluctuate like that. I have the same problem. I got a manual ECU and the problem was fixed.

[@JamesDguy]

Nobel Del Mar We ended up being able to use the auto ecu. The p28 was a manual ecu we had a crap dizzy and caused so much issues. We did the crank position bypass then a new dizzy and everything smoothed out

[@miguelchilpa2065]

What can be the issue if im not getting any 12 volt on the system..gsr 1995

[@adorno1010]

I wonder what the idle issue was? Cause when I did mine I had no idle issues except for the iacv but that was simple

[@JamesDguy]

Idk I know mechanically the engine has no vac leaks or issues but ecu swap and bam its gone. Lol

[@eiserquintero1580]

Hello friend, interesting your video. my case is as follows, my car is a Honda Civic 96 with engine d16y8 ... we have changed the engine for a d15z8 and has the same distributor of the previous engine (obd2a connector) ... with the ecu obd2a the car fails like in your video ... with the ecu obd1 the car does not turn on. the wiring of the car is obd2a ... will you tell me where I have the problem?

[@maurofaria4087]

maybe its a obd2b instead.

[@brandon2kn]

You went through the trouble of buying a conversion harness and ecu when you could’ve replaced your faulty iacv ?

[@KarsUpGraders]

With a p72 ecu wich converter i need to use? Obd-A or Obd-B ?

[@tnbjune5177]

Can this be done with an automatic ? Got a 98 civic ex

[@joaquinn627]

I put a jumper harness on a 97 Honda Civic stick shift, now one plug is not connecting at all. Space left has pins to connect did I buy the wrong one? Which one was supposed to be left off in video? Mine is the second big one

[@Goujii]

Can any of this work for automatic i been looking around is there any for automatic i have a d16zc engjne

[@mickygadfly2361]

that engine bay is so clean

[@YhormTheSmall]

Should I get a p72 for my h22a4 swapped 98 integra? And get hondata 300 for it for the best tuning capabilities

[@YhormTheSmall]

The engine is obd2 so all I need is the harness to plug in the obd1 p72 ecu right?

[@QQTrick1QQ]

Good deal on the cam upgrade, maybe it's just the audio but sounds like the lifters are a bit noisy. Timing chain, belt or gears while you're in there?

[@JamesDguy]

Its the transmission. Making noise I have a spare if it blows but engine itself sounds great but the phone audio makes it sound way worse than normal. Its hardly noticeable in person. Idk why its like that lol

[@gamingmaster9101]

how does this affect code scanners by chance? and what can you do to scan codes if it does affect it

[@merissaandcedric4987]

Can you give me a link to the jumper harness

[@rickyjohnson974]

what ecu is a 37820-p0j-L11 🤔 new to Honda's and need some help with it

[@rnldmanuel88]

bro do these jumper harness still engage vtec

[@slimelines4394]

Bro did you have to convert the y8 dizzy or did the ecu jumper harness take care of that without having to mess with the dizzy plug when going from obd2a to obd1

[@JamesDguy]

As long as you use a y7 or y8 dizzy you will be fine. Nothing needs done unless you are using a z6 engine then you will need a Z6 dizzy and dizzy conversion harness otherwise all other D swaps can use the y7 or y8 dizzy. Hope that helps

[@slimelines4394]

@@JamesDguy do you have Facebook bro i have a few questions with pictures I can't send on here would be very appreciative

[@slimelines4394]

Any chance of getting a bit of help from ya bro?

[@Editzbybrian]

How would you pass inspection like this. I basically have the same thing just on a b16 jdm swap and was also Manual swapped but I can’t pass inspection in NY?

[@user-hh4hc2lt6e]

Please help bro... So your idle would jump?? Mine jumps when the engine is warm, it goes like that, from like 1500-1600/1700.... no clue what it is. And also if I’d keep it revved at 2k it will actually jump up and down from 1500-2000 by itself as long as my foot is on the gas, almost sounds like a rotary or something

[@JamesDguy]

Sounds like a air idle control valve/Vacuum leak or low coolant. Check them first but if that don't work then check dizzy i replaced mine with one from my parts bin and it fixed my issue. There is also a OBD2 wiring pin that needs done if it was auto but you might have to google the obd2-obd1 conversion issues. Its been awhile since i did this exact fix.

[@MyLooneyBin]

I have a non vtec '94 Accord (F22) automatic, can I use a P28? what should I look for, what ECU can I pop in there - I thought I heard you say I could put the P28 in??

[@carloriveralol8276]

Can you use hondata with this converter?

[@Miss__Victoria]

thats a beautiful header

[@user-of8mg3oe5m]

I also have a question, I have an obd1 p28 and mine is obd2 for automatic and I use the same converter but when using it the transmission feels heavy and it advances but it does not make the changes that could be made

[@lexiisalicea7726]

Isnt the obt2 port the modern one?

[@preludedudesi5208]

Gonna convert my 1999 civic to obd1 it has the y7 in it do i need to change anything on the motor

[@larryaustin5165]

Why obd1 it's the worst system made

[@littlemenace9382]

@@larryaustin5165 its allot easier to connect to obd1

[@DTunedF22]

Why do you go from OBD2 to OBD1 I want to Convert my OBD1 System in 95 Honda Accord EX to OBD2

[@GGYoutuber5958]

Nice video bro. This one was full screen. Not sure what happened with your last one.

[@JamesDguy]

Not sure either lol

[@joseagosto9753]

Hey I have a Honda Civic 2000 with a d16y8 I’m getting a p28 do I need do this exactly? ... or is it a different ? Please let me know really don’t know bout this

[@chrish7165]

I need help!!!! 1997 D16y8 obd2a into a 1989 civic sedan obd0. Ive already got a d16z6 crankshaft to replace the crappy y8 one. Ive been looking for the ecu for the engine. Ive also looked on rywire and cant make sense of it. Plus not trying to drop $850 on wire. The old obd0 harness is screwed. So what i have right now is a obd0 car, obd1 z6 harness and an obd2a engine. Any help will be greatly appreciated. Hmu at civicchriss on ig. If that dosent find me try Chris's civic.

[@edwardmarin4318]

hello friend, i have a civic 94 but i am mounting a d16y8 motor, could i buy the d16y8 wiring and adapter and use it on my obd1

[@jeremiahmorales9824]

Hey I got a question hopefully you will see this! So I swapped a obd2a d16 into my 2000 civic which is obd2b... do I use a jumper to change the obd2a harness into a obd2b manual ecu? My car has an extra plug that comes from the car harness.

[@rebelking4139]

i have a d14 do i need anything else than the harness and the p28?

[@PUMAOT]

My idle is fluctuating, what do I do?

[@frankgarcia3487]

I have 1997 del sol with a D15B block and D16y8 Head on P28 ecu but it's misfiring would this work since the block is obd1 and the Head Obd2?

[@desvousges4230]

Are the p28s getting hard to find?

[@JamesDguy]

Not really. There are 6 virgin p28 Forsale on my Moore buy sell trade group on Facebook. Fair priced too.

[@michaelscott6669]

Do i need to change wirings snd ditributor

[@btibbs626]

Will this work the same for the zc motor? And will I have problems with inspections? Also if u lived near me I’d give you a d16 motor for free lol runs good. Just don’t need it

[@JamesDguy]

Wow I could use a spare. And Idk if it would pass inspection we dont have them down here but im pretty sure u could tune a chipped ecu to run good enough to pass inspection.

[@btibbs626]

James Dguy I’m in nc if I had a truck I’d bring it to u I have no use for it. It’s still in the car my other motor should be here soon. Your videos really help out.

[@JamesDguy]

If I had money id pay for u to freight it here but im all broke now -_-. Glad my videos help. But hang on to engine ill see if I Cant figure something out lol

[@pablojeria7449]

3 wire iacv to 2 wire iacv?

[@tammutab6110]

I have caprice 1994 obd1 12 pin connector i tried to scan with bluetooth i used obd2 to obd1 adapter but i doesn work how does work? is there way to convert obd1 to obd2 other than using obd2 to obd1 adaper thanks

[@JamesDguy]

I wouldn't know on a Caprice. Sorry

[@tammutab6110]

THANK YOU شكرا

[@FroztiProductions]

Wait so if I want a chipped obd1 ecu for my 97 civic I just need this jumper? I thought you had to convert all the leads on the harness going out to each connector.

[@JamesDguy]

FroztiProductions u only need the obd2 to obd1 ecu harness and ecu. UNLESS you install a obd1 engine with odd1 distributor in the car. If ur keeping the stock engine that came in the car then u just need the harness adapter and the ecu.

[@vincentbillionaire]

Moore Motorsports James Dguy hey so I took my 5 speed four cylinder engine out of my 1995 Honda Accord and put it in a 1996 Honda Accord bought the obd2 to obd1 jumper harness and plugged in the the obd1 computer out of my 1995 but the car isn’t starting...it’s starting with the automatic computer tho....how can I fix this ?

[@Schmegil]

@@JamesDguy thank u Jesus Christ I was fixing to abandon ship on my y8 lmfao!

[@JenaJDM]

Hi, i have ek3 with D15z6 engine i will do swap cam and bridge from d16z6 and ecu p28 with base map will i need only these harness plug and play or somethning else? Thanks nice video.

[@JamesDguy]

It should be plug and play and your ready to go.

[@JenaJDM]

Thanks

[@Iamcollinwhittaker]

Do you need to convert the distributor from obd2 to obd1?

[@Thommy002]

Same question

[@itsyano1277]

Do you know where I can buy a blank p28? If it's from a manufacturing or distribution company that you could provide the name of to me, please?

[@jamescrabtree4609]

I'm doing a auto to manual swap on a 99 Acura GS Integra can I do this and then use a p28 ECU without I reflash I don't have VTEC head yet and want to be able to drive it for a while without it

[@Manuel-bk4lo]

Hey man what you end up doing for your ecu I’m going to swap my 99 integra too and want to know if obd2 to obd1 then convert the ecu to manual by removing rp17 and installing jumper for rp18 is the way to go if I don’t find a manual obd1 ecu, will it work ?

[@juancampos4026]

I am late but will the p28 a01 And p28 a02. Work are they basically the same ?

[@qrs3658]

i got a 2002 honda accord v6. will this work?

[@pincheocho8579]

No Link to the adapter?

[@boengel5342]

So i have neptune do you know if i have to use a z6 cam gear and basemaps?

[@meatwad1257]

So the p28 is already chipped and programmed?

[@jaybelurkin]

Can you use this if you have obd1 chassis harness, but have a obd2 jdm engine?

[@therocker5241]

Just plug and play? No distributor swap needed?

[@greateaglediaz6963]

Can I put a Honda Civic OBD2 on a Mitsubishi eclipse? Please I take tips from the audience

[@XxScottGattoxX666]

checking in! lol....... Im always here

[@792bnz]

Works with the accord? I have an 02, ex

[@JamesDguy]

792bnz no clue I dont work on accords really but id assume it would since it's basically the same as civic. I would do a google search to be sure since I am unsure

[@792bnz]

James D guy k thanx for replying

[@JamesDguy]

792bnz No problem wish I could help more

[@altaccount3760]

This a d16?

[@tyea100]

Is that the same obd2a and obd2b harness?

[@JamesDguy]

Sang Besi obd2a and Obd2b have different harnesses and require different jumper harnesses. Mine is obd2a in this video

[@tyea100]

@@JamesDguy now I use zc single cam engine with head 3 stage and complete wiring auto 3 stage.what harness i supposed to use?I want to use ecu p28.sorry about my language

[@fullcoverage5305]

If I'm putting a 94' gsr motor in my 00' gsr car, what all do I need to swap over and what all do I need to keep? Any info helps!

[@JamesDguy]

Jake Cartwright 00 gsr what though? Civic or integra? I would assume you need the obd2b harness and 94 ecu obd1.

[@fullcoverage5305]

Integra

[@fullcoverage5305]

That's all I will need though?

[@JamesDguy]

Jake Cartwright the engine and engine harness for the 99 civic as well. Mounts and so on. If it has a obd2 distributor you will need a obd2-obd1 distributor conversion harness as well

[@fullcoverage5305]

So take my stock 00' gsr out of my integra, replace it with the 94' gsr motor, and all I will have to switch is a conversion harness for my distributer from obd2-obd1? And ecu from obd2-obd1?

[@MrRoman7979]

Tq info

[@gamex9288]

Whats it the difference of obd2 to obd1 and obd2b to obd2a i saw on ebay

[@hondaboys_420]

@@gamex9288 obd2a= 96-98 obd2b= 99-00

[@WOLFCARMOTORS]

Good. Thanks.

[@josegino2726]

I have a quection why does it idle at 2k ?

[@JamesDguy]

Jose Gino It was my distributor it was trash. I literally couldn’t figure it out either but put another one in and it idled normal.

[@christaphoreruffin2122]

Cold start duhh

[@TheErnesto321]

Have 2000Gsr body and putting in a 1996 ls Integra engine and transmission what wiring do I need thanks in advance

[@JamesDguy]

Obd2B im pretty sure and not sure on engine harness but i would assume a OBD2B engine harness for a D16y8 would work but might need modified.

[@christicristian06]

My friend James help me with something man, i wanna swap an h22 into an eg5 can you hit me up with a message about how to properly do the wiring? Do you have facebook or something so we can chat?

[@haropelon]

Got a question

[@CooksAcres]

i think it idles like that in the beginning because of the iacv

[@JamesDguy]

Michael Cook it was because when doing the 3 wire to 2 wire I didn’t do the depining and repin at the ecu connector causing that idle issue.

[@masoncolville8827]

Did the speedometer work normally after switching to obd1? I’m having an issue with that

[@oscarsilva200]

Same here did you remember how you fixed it?

[@blacklabelqlewis]

I just swapped my 98 to OBD1 and used the IACV conversion plate and now it idles like yours was and drives like absolute shit. Wtf happened?

[@mikehenderson2412]

nice

[@MegaJoojee]

I want cup holders too!!

[@edwardmarin4318]

Hola amigo tengo un civic 94, le estoy montando un motor d16y8, quiero saber si comprando el cableado del d16y8 y el convertidor podría usarlo en mi obd1

[@BlondynCh]

go with a computer from 92 VX !!! you will get 40-45 mpg and your vtec will kick in at 2500rpm thats what I had and it was a stock best lol with jdm d15b block and VX head

[@donniebailey4496]

My Honda used to do that till I replaced the tps

[@JamesDguy]

It was the Dizzy for some reason lol.

[@itzcoatl1037]

Hpw would you pull codes

[@10fourRecords]

Same question

[@cooliecrewspeedshop]

Your paint fucked but gd your engine bay is so clean, you going turbo soon? I see an AC delete

[@JamesDguy]

Ryan O'Brien In videos I did after this one I built a high compression engine and tuned it and it was fun but when you get offered 3,500$ for a car you paid 300$ for and out 1000$ into then you take it as a win and sell! Lol but I cleaned it up repainted it and it looked hella clean. There is more videos on that car if you browse my content

[@cooliecrewspeedshop]

James D guy I have the same sedan, maybe a different trim; I have the LX. I’m also running a non-vtec but I want to run a turbo and have supporting mods for it. My goal is no more than 200hp reliably cause it’s also my daily

[@hardhitt3r410]

Engine bay lookin wet!!

[@JamesDguy]

RIGHT!!!

[@hardhitt3r410]

James D guy Riiight!! SUBBED

[@BrandonV47]

What engine is that?

[@JamesDguy]

Br4ndon_ V was a stock y8 with some bolt ons. Now it has y7 bottom end with arp studs, p29 high compression pistons, y8 head, 8lb flywheel and stage 2 clutch. It will be getting put back together in the next few days

[@BrandonV47]

why did you go to OBD1 if your engine and car are both OBD2?

[@JamesDguy]

Br4ndon_ V Obd1 P28 and i hate the obd2 non tunable system. In order to tune the high compression setup I have to be obd1

[@BrandonV47]

Oh ok now I know what ECU to run thank you

[@JamesDguy]

Br4ndon_ V no problem. I prefer P28 over any ecu even if I’m running non vtec

[@EkCivic]

You shouldve disconect the battery terminals 1st before doing this

[@JamesDguy]

Should have done alot of things different but ur not wrong.

[@athaothao2880]

nice ecu p28s

[@heffedirte6243]

Dirty throttlebody and sensors