jdmeg6118

iTrader: (1)

What is needed to run a y7 in a 97 ex with y8 manifold without a check engine light and to run normal and reliable thanks?

Car has a y8 ecu

y8 harness

wont rev pass 5k

grumblemarc

iTrader: (4)

Pull the codes.

jdmeg6118

iTrader: (1)

is there anything extra i need to run on this setup?

Or anything that needs to be taken off?

grumblemarc

iTrader: (4)

You need to find out why you are getting a check engine light.

grumblemarc

iTrader: (4)

Wait. You don't have this installed yet? Why is there a Y7 in an EX?

grumblemarc

iTrader: (4)

http://www.google.com/search?q=d16y8...2bee5a4a93f9a3

apexi_rsx

you need a y8 auto intake manifold to not throw any codes or change anything. runnign a y8 ecu on ur y7 im sure is already throwing a CEL as the y7 does not have a knock sensor,vtec or a 2 wire iacv

jdmeg6118

iTrader: (1)

yes it's installed i got the car that way

jdmeg6118

iTrader: (1)

most of those links are about the y8 head onto a y7 block in a dx i have a y7 with a y8 manifold in a ex

grumblemarc

iTrader: (4)

Do your own search then. There was a how to on another forum somewhere with pics for this exact same thing.

jdmeg6118

iTrader: (1)

thanks

grumblemarc

iTrader: (4)

Lookey here.
http://www.d-series.org/forums/diy-f...swap-pics.html

HondaPartsHero

Ok here's the deal. If you keep the Y8 ECU you'll have to use the Y8's two wire IACV, the 3 wire isn't compatible with Y8 ECU. But if you go this route you'll always have a check engine light for VTEC and knock sensor. Your best bet in this case is to find a Y8 head a d do a minime swap. Or.....

If you want to keep the Y7 you'll need to get a Y7 ECU and run a 3 wire IACV either by swapping on the Y7 throttle body and wire up the 3 wire IACV and blocking off the IACV ports in the back of the y8 intake manifold or just get a complete Y7 intake manifold with throttle body.

Skunk2Joe

if its a ex it should have a ex harness, and the manifold or any of that should matter. the only difference would be the block, and as long as they installed a knock sensor, and everything else, you should be fine. I would pull code, and see what it says. But if its a ex car, with a ex head, dx harness and block. I hope you knew that when you bought it. It can be made to work, but the easiest soultion for you if you are unsure on wiring is to get a ex harness. Then you will have the plug for power steering or ac if you ever decide to put that in the car.

jdmeg6118

iTrader: (1)

Thank you for the help!

jdmeg6118

iTrader: (1)

yes i knew i got this car in a trade for some stuff..it has ex harness still has ac and pw..i think i should do the y7 ecu and tb so i will need to add a knock?

Skunk2Joe

If it has the ex harness, then you need to jump the code and see what its throwing. do yourself a favor and put a vtec head on it, then you will just need to add a knock sensor and you will be good.

HondaPartsHero

I agree if you can afford it. If you go with the Y7 ECU you won't need a knock sensor but youw will need the 3 wire IACV as its a must.

jdmeg6118

iTrader: (1)

and a y7 tb right?

Skunk2Joe

not if your using the y8 manifold.