D15B 3-Stage with P08 ECU

[xsxd]

Car: Civic 99 VTi Oriel (PK6)
Transmission: factory AT
Engine: D15B 3-Stage
ECU: P2J-J61 (originally meant for a CVT/MMT)
Converted (rewired) to OBD2a.

Problem 1: the IACV. cant seem to get it to work. have tried 7-8 of them.

Problem 2: The P2J ecu is messing up, car runs like its towing another behind it (specially with the AC on). Current codes displayed are 9 and 14.

There are currently 2 solutions presented to me...
(1) change the ecu to P2J-J62, or
(2) change the ecu to the OBD1 P08 (P08-007, P08-008, P08-009)

I read a post on a honda forum that the P08 can be made to work with dual VTEC by editing IAB values using Crome.

1. Does (2) sound like a legitimate solution?
2. What base map will be used in this scenario (P2J or P08)?
3. Are there any other critical elements that I need to consider before going for this setup?

[xsxd]

Code 9 CYP - cylinder sensor
Code 14 IAC (EACV) - idle air control valve

[SpoonMotorSports]

Car: Civic 99 VTi Oriel (PK6)
Transmission: factory AT
Engine: D15B 3-Stage
ECU: P2J-J61 (originally meant for a CVT/MMT)
Converted (rewired) to OBD2a.

Problem 1: the IACV. cant seem to get it to work. have tried 7-8 of them.

Problem 2: The P2J ecu is messing up, car runs like its towing another behind it (specially with the AC on). Current codes displayed are 9 and 14.

There are currently 2 solutions presented to me...
(1) change the ecu to P2J-J62, or
(2) change the ecu to the OBD1 P08 (P08-007, P08-008, P08-009)

I read a post on a honda forum that the P08 can be made to work with dual VTEC by editing IAB values using Crome.

1. Does (2) sound like a legitimate solution?
2. What base map will be used in this scenario (P2J or P08)?
3. Are there any other critical elements that I need to consider before going for this setup

the cyp sensor is inside the dizzy

what iacv are you using? 2wire? 3wire? your problem sounds like wiring issue

yes you can use obd1 p08 chipped ecu on your d15b dual vtec you have to do the following things to make it work:

*buy/make obd2-obd1 conversion harness
*obd1 low-ohm 240cc d15b/d16z6 injectors/resistorbox, (92-95)
*obd1 distributor
*obd1 vtec ecu chippable
*2wire iacv/obd1 iacv plug

*obd1 alternator/alternator plug

*you need to either bypass the VTPS switch in your new obd1 ecu/or you can use crome to eliminate VTPS

now the crome part:
crome does not have a rom/code for dual vtec - as far as the iabs are concerned if you want your 1st vtec to work as per iab activation you'll have to alter the wiring and make a pinoout for the iab from the ecu (a-17/a-19) depending on the ecu being used to the 1st vtec solenoid(12valve mode) or you can also use a p72 ecu that already has the iab support
but after all this you'll only be able to switch to 1st and 2nd vtec mode although you can't tune your maps both first and 2nd vtec will run on the 16valve/vtec maps
meaning even running in the 12valve mode(lean burn) your ecu will still through fuel as per 16valve

either do the above - or just get a p2j ecu and call it a day! thankhyou

[shazo]

k.o

Sent from my iPhone using Tapatalk

[Taha_Shakoh]

Dude let me tell you what I did with my D15B 3 stage. I took off the dual Vtec solenoid and instead put up a single one from bilalgang. Im running it with my p08 now and its running perfectly, damn fast . About IACV, had to change 3 of them, the fourth one finally worked, got it off some engine. Clean it with a carby cleaner and also clean the throttle body sensors. Good Luck

[SpoonMotorSports]

Dude let me tell you what I did with my D15B 3 stage. I took off the dual Vtec solenoid and instead put up a single one from bilalgang. Im running it with my p08 now and its running perfectly, damn fast . About IACV, had to change 3 of them, the fourth one finally worked, got it off some engine. Clean it with a carby cleaner and also clean the throttle body sensors. Good Luck

how did you connect the obd1 ecu with the dual vtec obd2 wiring?
if you converted the wiring harness then thats some serious jugar you did

[xsxd]

Car: Civic 99 VTi Oriel (PK6)
Transmission: factory AT
Engine: D15B 3-Stage
ECU: P2J-J61 (originally meant for a CVT/MMT)
Converted (rewired) to OBD2a.

Problem 1: the IACV. cant seem to get it to work. have tried 7-8 of them.

Problem 2: The P2J ecu is messing up, car runs like its towing another behind it (specially with the AC on). Current codes displayed are 9 and 14.

There are currently 2 solutions presented to me...

(1) change the ecu to

P2J-J62, or
(2) change the ecu to the OBD1 P08 (P08-007, P08-008, P08-009)

I read a post on a honda forum that the P08 can be made to work with dual VTEC by editing IAB values using Crome.

1. Does (2) sound like a legitimate solution?
2. What base map will be used in this scenario (P2J or P08)?
3. Are there any other critical elements that I need to consider before going for this setup

the cyp sensor is inside the dizzy

what iacv are you using? 2wire? 3wire? your problem sounds like wiring issue

yes you can use obd1 p08 chipped ecu on your d15b dual vtec you have to do the following things to make it work:

*buy/make obd2-obd1 conversion harness
*obd1 low-ohm 240cc d15b/d16z6 injectors/resistorbox, (92-95)
*obd1 distributor
*obd1 vtec ecu chippable
*2wire iacv/obd1 iacv plug

*obd1 alternator/alternator plug

*you need to either bypass the VTPS switch in your new obd1 ecu/or you can use crome to eliminate VTPS

now the crome part:
crome does not have a rom/code for dual vtec - as far as the iabs are concerned if you want your 1st vtec to work as per iab activation you'll have to alter the wiring and make a pinoout for the iab from the ecu (a-17/a-19) depending on the ecu being used to the 1st vtec solenoid(12valve mode) or you can also use a p72 ecu that already has the iab support
but after all this you'll only be able to switch to 1st and 2nd vtec mode although you can't tune your maps both first and 2nd vtec will run on the 16valve/vtec maps :D
meaning even running in the 12valve mode(lean burn) your ecu will still through fuel as per 16valve

either do the above - or just get a p2j ecu and call it a day! thankhyou

IACV is a 3-wire.

I too believe it to be a wiring issue. I think i will get a P2J and forget about P08... really dont want to get into that mess.

the guy i talked to said "there is no cyp sensor in ur car". how do i properly diagnose the problem with cyp?

also, the RPM is supposed to increase when you turn on the AC, right? mine decreases by about 200-300.

Question: how can someone check the wiring? as in what is the procedure? the guy i went to actually re-pinned the ecu end of the harness using pinout diagrams available online (pics attached). he also bypassed the CKF sensor.

[Taha_Shakoh]

Well then my engine must have been a single Vtec in the first place, cause I did not convert anything, the wiring fitted perfectly. These bilalgang people keep changing solenoids at will you cant ever be sure lol.

[SpoonMotorSports]

Ignitor module,ckp,cyp sensors are in the dizzy! since when are you having this issue?

[benaam]

@Taha
bro which solenoid r u using for vtec single or dual ???

[xsxd]

@Spoon
3 days now... first it gave a CKF error, then IACV, now IACV and CYP.
I'm pretty sure there is a wiring issue... and am thinking of changing to a new complete wiring harness if it isnt too expensive. but what concerns me is that the bad wiring may have shorted/ruined other things as well

[SpoonMotorSports]

rare cases! it will short the fuses before it shorts anything serious(ecu)
this is the 3rd case in the last month due to extreme weather 2 of my frnds suddenly had the same type of issue!
wiring would cost your around 3k i guess! do you know any good electrition?

[xsxd]

rare cases! it will short the fuses before it shorts anything serious(ecu)
this is the 3rd case in the last month due to extreme weather 2 of my frnds suddenly had the same type of issue!
wiring would cost your around 3k i guess! do you know any good electrition?

mmm well the person i went to left the ecu panels unscrewed... also i dont think he is a good electrician.... so the answer is no... i dont know any

[xsxd]

my car does a lot of sunbathing...

[SpoonMotorSports]

go to a good electrition check wiring! to all the sensors!

[Taha_Shakoh]

@benaam: Using a single Vtec solenoid with the p08 ecu.

[xsxd]

go to a good electrition check wiring! to all the sensors!

I'm thinking of going to a Honda 2S (Deinfa motors) today, to get a diagnosis.

[xsxd]

checked fuses... none shorted out.

[benaam]

@XSXD
did u run diagnosis from honda ??

[xsxd]

not yet. i just found out that deinfa motors (defence) does not work on 99 model civics. the heck?!!

anyone know which 2S or 3S place does? ah well... i think i will just go to honda shahrah-e-faisal