Sivik

Hey guys,

I have a 98 EX and ordered the 92-95 EX kit from Greddy. Going to put it on this weekend with a friend. I got the wire diagram for a 98 for the blue box, but there are still a few things im unsure of:

1) The deal with the MAP sensor. 92-95 don't have it, but I do. I know what it is, but what does it do and why is it important for my install? I've seen something for a homemade "missing link" but what is that? Do I need any of this for my install?

2) Stupid question, but where do I install my vacuum tubing for my boost gauge?

I'm mostly lost about the whole MAP sensor thing so any help would be greatly appreciated. Thanks!

DeepSi

Vacuum source:
FPR
Back of the Intake Manifold
Cruise Control, before check valve
Brake Booster

Map Sensor:
Map sensors are used to measure the pressure. when the sensor measures positive pressure it sends a voltage to the ecu. So the sensor informs the ecu when positive pressue is present. Positive pressue is caused by turbos pressurizing the air.

:edit: forgot about the map sensor



[Modified by DeepSi, 10:28 PM 1/1/2003]

Daniel

map sensor senses manifold absolute pressure (map) in the intake manifold and translates that into voltage. It transfers that data to the ECU, and the ecu delivers fuel accordingly. If the voltage goes above -- i believe -- 3 volts, you'll get a code.

Sivik

so do I need it for my car? like i said, the kit is made for the 92-95 which don't have one, but since I do, what do I do about it? confusing... yes i know!

Night_Minx

92-95 does have a MAP sensor.they put it on the Blue Box for a reason. how come theres one on my 92-95 Ex ecu and 96+ ecu.
have fun with the oil sender line.
diagram borrowed from turbocivic.net for 96-98 civic




[Modified by Night_Minx, 11:12 PM 1/2/2003]

Sivik

so i don't need to do anything physical with the map sensor? i read that a guy made a homemade missing link... whats that and how does that help?

Daniel

you'll be using the blue box, right? if you're wiring it up yourself, just wire it up as said on turbocivic.net and don't worry about a missing link.

CzanSOHC

IF you are using the blue box, you don't have to worry about doing anything w/ your MAP sensor.

boostincoupe

so what you guys are saying is that if I have a 96-00 civic, and I wire up the blue box, I DON'T need a missing link?

boosted_dc2

the only way you need a missing link is if your going to run it with no blue box. the blue box will keep it from throwing a code.

Pengo

blue box is kinda like a missing link and fmu all in one, just electronic. it does the job dumping more fuel and preventing the map sensor from seeing boost, while using the map sensor voltages to figure out how much fuel to add. just a generic explanation but i think it gets the job done. so if ur using the blue box, u dont need fmu or missing link.