protopro88

Hey so im going to install a hondata s300 so I can get my jrsc si tuned soon. What do I all have to remove for the s300 to work properly. Could Someone please give me a diy. Thank you

0mtber

iTrader: (2)

Remove anything electrical that the JRSC kit came with as wise of intake air temperature sensor hack, fuel management unit etc.

Re-locate your map sensor signal from the throttle body to the back of the supercharger using a vacuum line. Block off the port on the throttle body with either a spare stock map sensor or a plate of some sort.

protopro88

Do I remove the air temp sensor from the manifold, or do I keep it on the manifold so there are no vacuum leaks?

rustbucketrex

You will use the IAT sensor in the manifold with Hondata.

0mtber

iTrader: (2)

Keep the intake air temperature sensor installed.

protopro88

So I just take out the relay that goes to the air intake temp sensor and the intake temp in the manifold?

Jaker

You'll also need some injectors with a higher capacity than the OEM ones. Some say 440cc/min or larger work great. You should probably take this opportunity to go to a better newer fuel pump too.

protopro88

i have a set of rc550 injectors. Is it really necessary to upgrade the duel pump if im running a 8 psi pulley?

Jaker

You will probably be OK, but it's pretty easy to change, and costs about $90, so why not?

protopro88

so i keep the air intake temp sensor attached to the air intake, and keep the intake manifold sensor attached to the manifold, and just take out the relay and wires leading to both?

Jaker

You should only use the IAT that is in the intake manifold, and make sure that one is wired into your ECU. The one on the intake arm will not give the ECU the correct readings for the intake air temperature.

protopro88

Ok so can I just use the wires coming from the wiring harness that go to the air intake temp and extend them to the manifold air temp sensor?

Jaker

Yes.

protopro88

ok. and how do i go about removing the fmu that jr has?

protopro88

There. Are two wires coming out of the harness for the air. But only one place to hook it up on the maifold temp sensor. What do I do

Jaker

If there's only 1 connection at the sensor in your intake manifold, you have the wrong sensor in there. We need to see pictures of what you're looking at.

protopro88

Ok ill take a closer look when i get home to see if there are two. How would i take out the fmu and return the fuel system to stock (hose placement wise)?

Jaker

Put the fuel lines back to the OEM configuration.

protopro88

The guy before me installed the jrsc so i dont know what oem looks like. Could someone help me out

Jaker

Take some pictures of your engine bay and we'll help you out.

protopro88

ok thanks alot. I will do that. Im going to wait to take out the fmu, cause im going to be installing a stepper pulley coming soon, and i want to make sure everything works before i mess with the fmu.

protopro88

protopro88

protopro88

protopro88