Greddy Turbo Kit on Eg Civic D16y1..... check light?

[Sexc86]

Hey guys

Basically i have a greddy turbo kit on my D16y1 Eg Civic VTI. It is running a greddy piggy back ecu (looks to be wired into the map sensor) with a Td04 Turbo. now when comeing on full boost (7psi) the engine check light seems to come on, which (correct if wrong) seems to put the car into safe mode which seems to make the engine idol a little higher... It doesnt seem to be a very serious problem and all you have to do it turn off ignition and then restart and its gone!

Any cheap quick and easy way of getting around this? i have had a few suggestions such as a map sensor to read more boost? possibly 3bar? or check valves? or even a piggy back comp such as a vafc ?

I never even knew that civic map sensors could read boost? what do they read standard?


Anyway maybe shoot some ideas my and and start a discussion about it, any help is very much appreciate and i dont mind shooting over some post credit points...


Thanks in advance

Regards Lyle!

[EG5[KRT]]

map sensors read the manifold air pressure

so when u have boost its abundance of pressure the ecu prob thinks that something is wrong.. so thats why the light...

[Sexc86]

yeh tru but the check light only comes on nearly full boost? say 4 - 5 psi

[EG5[KRT]]

mayb map sensor only reads to certain level of boost.. coz usually it only reads low pressure.. and vacuum..

[pornstar]

no your specific problem is that your tuner doesnt know what he is doing.

The Map sensor never sees boost with the emanage, that isnt your problem, it will be a function on the BC map that the tuner has not corrected. Ive also seen this problem when a tuner doesnt understand the emanage software and uses the af table rather than the injection table. If the af table is being used to add fuel, anything above 20 in the tables will give you an error.

the fact that you restart it and its fine again from my experience is the way that it has been set up or lackof, im almost 100% sure from the symptoms you describe that it is the way that the BC table has been setup.

[Sexc86]

Thats the thing, i dont think the setup has the emanage? i just looks like it has something wired into the map sensor? some sort of greddy unit?

[pornstar]

well take some pics and ill confirm. But the easiest way to check is to open the kick panel up and trace wires into your factory ecu and see if it leads to an emanage.

[STOCK]

do you have an aftermarket ecu tuned for boost?
if your runing stock ecu use a check valve or a zener diode with the right value.

[aimre]

If he's running a greddy kit, he is using a greddy e-manage.

It must be wired up wrong if its throwing out codes, it shouldnt do that

and your probably still using a base map, so its not tuning, that can do 7 psi outta the box

[Sexc86]

hey mate its nont running an emanage.... there is some sort of greddy unit that is wired into the map sensor and a few other little things? please help? ill get some pics up soon!

[aimre]

could u take a photo of this "greddy unit"

[Sexc86]

yeh man ill try get some tonight, possibly if anyone could help me out if they could add me on MSN Draper_Ebay@Hotmail.com

[Sexc86]

here guys? what do you think? could check valves do the trick? No emanage, just a piggy back unit wired into the map + malpassi fuel regulator

Greddy unit located on the left near the intercooler plumbing

http://i9.tinypic.com/3z08bip.jpg
http://i13.tinypic.com/2wg7lg7.jpg

[pornstar]

lyle, dont bother, the easiest and cheapest thing is to get rid of that missing link etc, and just wire in an emanage.

[Sexc86]

gday mate
Yeh i know however im a little strapped for money now as i unfortunately had to resign from work last friday and i will have to sell this little beast :(:( and i would just like to possibly remove this engine light problem....

[Sexc86]

WHO LIKES MY CRINKLE PAINTED DIY VALVE COVER!!.... i might actually post it up in that diy thred

[aimre]

Did you Check you ECU to see why its flashing?

theres a thread in DIY how to check your ECU for codes. Could be something simple like a plug fell out

[Sexc86]

Bump guys, does anyone know if a Vafc tuned will fix this problem?

[aimre]

Mayb u should try a ECU check first. You mayaswell its easy to do

http://www.ozhonda.com/forum/showthread.php?t=8218

Just try it, it mayb just a clip fell outta a plug, and would b an easy fix

Try the free things first, then go spending money

[Sexc86]

nice mate cheers..... rep point for you!

[Sexc86]

ok guys DONE!!

it came up with Code 3! so - 3 MAP - manifold absolute pressure sensor

Anyone know a way to solve this problem?

[aimre]

is the clip plugged in?

wires not loose?

[NightKids]

How much did u spend on this turbo kit including install?

[Sexc86]

hmm the vacume hose to the malpassi fuel regulator was kinked, fixed now ill go take her for a run and see how it goes?

also anyone know where to install check valves?

[Muzz]

ok guys DONE!!

it came up with Code 3! so - 3 MAP - manifold absolute pressure sensor

Anyone know a way to solve this problem?

Easy, if your using the oem map sensor, and your managment system isnt designed to fool the stock ecu reguarding the air pressure, than your gunna need to upgrade your map sensor to a 2bar/3bar sensor. Your ecu is currently going into safe mode as the map sensor isnt designed to work with positive pressures. Cant believe it hasnt been said sooner, and i dont even own a boosted car yet:thumbdwn:

If this is the case, which im putting all my money on, you will see the exact symptoms your describing.

[Muzz]

;1081199']map sensors read the manifold air pressure

so when u have boost its abundance of pressure the ecu prob thinks that something is wrong.. so thats why the light...


yeh tru but the check light only comes on nearly full boost? say 4 - 5 psi

Yep, all the people ive talked to who have had the same problem boosting a honda, say the same thing. It dosnt occour right as you go into positive pressure, you can still squeeze a few psi out.

[Muzz]

changing to a 2 or 3 bar MAP is a sure way to bugger everything up while still using a stock ECU.


Seems like about 80% of everyone on turbod16.com uses a 2bar map sensor with the stock ecu using piggyback managment/tunable chips.

As somone mentioned before have a look around for info on check valves, ive read of lots of people using these aswell to cure your problems, i no very little about them though.
Apparently, they stop the signal being sent to the ecu that the intake is seeing positive pressure.:thumbsup:

[Muzz]

yes...tunable chips...so the ECU knows there is a 2 bar MAP there. Even a piggyback, if suitable, will intercept and only send a MAP signal that the stock ECU will know what to do with. Obviously in this case whatever box Greddy is using is not capable of doing that, and the stock ECU is not liking the positive boost pressure, it would interpret a 2 or 3 bar MAP signal completely wrong.


:o AHHHHHHHH i see, silly me:zip:

[Sexc86]

Ok guys, the black box has a part number - #11550021A, anyone have a wireing diagram for this? so i can check if its wired in proprely?

anyone have any solutions to my problem? without getting a full standalone ecu , hondata/emanage etc etc....... will an safc do the job?

[Sexc86]

http://i11.tinypic.com/4hcgd8x.jpg
http://i15.tinypic.com/2d91ag9.jpg
http://i17.tinypic.com/2afhg07.jpg
http://i16.tinypic.com/2ighm35.jpg

[Slow96GSR]

That part number is actually the turbo kit part number. The box is a FCU, Fuel Control Unit. Try this manual http://www.greddy.com/img/PHP/products/pdf/828.pdf It's for a 1992-1995 Civic EX. Pages 11 and 12. IDK if it is 100% what you needed but you can always email Greddy and give them a link to a picture. They would be my next step.

[creativepunka]

looks to me like it is already running a missing link/check valves (could be wrong, but thats what it looks like). Perhaps it is faulty or installed incorrectly.

Its not running check valves dude. If you want to do check valves (which would defeat the purpose of the greddy unit) you will need to remove your map sensor and run a vac line off the "doodle" end (of the map) and block off the old map sensor hole in the manifold (devcon works a treat). for your vac feed you could probably just "T" off the fuel reg vac line and off the vac line put two "T"s and on the end of each t put a one way valve venting to atmosphere. )you can get them from a fish tank shop. And just conect the vac line to the map. it would be easier to understand if someone draws a pic.