Hi, I´m instaling the jackson racing supercharger on B16 and I have a question about wiring relay.

I don´t know exactly were to connect the wires with relay provided with kit.

Under the picture with relay and wiring diagram. Does anobody has this kit installed to help me?

Thanks

http://img227.imageshack.us/im...3.jpg

http://img186.imageshack.us/im...0.jpg

 

I dug up some old notes I made. My relay had numbers on it near the connections.

85 -> pin "A" in your schematic
86 -> pin "B"
30 -> pin "C"
48 -> pin "D"

Of course this only works if you have the same relay as I got in my kit. You can check if you have a multi-meter, pins A to B should have relatively low resistance (thats the coil, should be >100 Ohm I guess). Before you fry your ECU, connect the relay with the pins you suspect to be pins A and B to a 12V battery charger. If the relay clicks you're good to go!

good luck!

Mark.

ps: if you can spare some cash, I'd suggest some tuning solution like Crome, Uberdata or ECtune and some larger injectors. Works much better than the JRSC box of tricks.

 

My relay have 85, 86, 87 (two connectors in gold color) and 30. I think that my 87 is the same of your 48.

On JRSC manual has a resistor connecting wire C with D. I tried to ask the Jackson Racing support but without success but If it´s possible to Answer, I would like to ask you if this resistor is needed and what´s the specification of this resistor.

And of course, Thanks a lot for your help.

 

My kit included a 1/4th Watt 15kOhm resistor, it was a B16 kit.

If the numbers on your relay are different you'll have to figure out the connections yourself, I assume you have a digital multi-meter and basic electrical skills. To help you get started, here's what the relay does:

The IAT sensor is an NTC resistor (negative temperature coefficient). So when the IAT rises, the resistance drops, when the IAT drops, the resistance increases. In MAP based fuel system the IAT is needed to compensate for air density (the ECU adds fuel according to IAT).

The 15k resistor in the JRSC kit is put in series with the IAT sensor, increasing the resistance the ECU "sees". With the resistor, the ECU thinks its very cold, which implies denser air, and it adds fuel.

The relay is controlled by a pressure switch. During light loads (vacuum) the relay is closed, which negates the effect of the 15k resistor. But when the pressure switch in the manifold sees more than ~1psi of boost, the relay opens, the ECU thinks it suddenly gets cold and increases fuel!

I hope that makes sense.

Mark

 

Thanks a lot

All make sense now!

I´ll buy this resistor, here in Brazil it cost about US$ 0,05.