Thread: RR DE into B13 - use RR intake manifold?

I did some searching a couple weeks back regarding the RR into a B13 (or early B14); and a couple people have done it. It doesn't look very difficult, the question I have is regarding the use of the RR intake manifold or just get a "standard" lowport intake manifold.

I have most of the extra emissions crap off of it so far, but the normal (to me) AAC and IACV don't exist on the RR. There are two other sensors that I assume are these, but they are shaped different (and in odd locations in one case). I have most of the RR harness, so I'm going to download the FSM for a P11/B15 and research these sensors.

I'm hoping I can just rewire the plugs and the B13 wiring harness will plug in and the ecu will operate them. That seems like the easiest method. Method 2 would be to get a lowport manifold and just swap that on - sounds like more of a PITA if I can just rewire 8 wires.

Thoughts or direction?

Josh

Switched up some search terms, and I looked up the P11 FSM. The RR runs a combined AAC/IACV that has a stepper motor connected to the TB. A quick look doesn't look like the wires are the same color, but I'll dig into it a little more tomorrow or when I have time.

I did stumble on canx2k's threads about a highport into a B15 RR - something of the opposite of what I'm doing, but still interesting reading.

The more I look/think, I think the RR manifold has a spot for an older style IACV still tapped only filled; so I might be able to install it there, run a B14 TB and use the AAC with a diff't size vacuum line. Might be the best option.

Josh

When we did mine we used a lowport manifold. It works just fine.

Yeah that's what I did too.



That would be awesome. I always wondered, but I have to assume that the new design flows better than the older lowport intake manifold.

I did this swap about 3 months ago. I used the stock usdm wiring harness, pulled it out of the car and set it on the JDM RR motor.

Everything plugged right up except 2 things,

the iacv, which i cut and splice to work because the connectors are not the same.

and the knock sensor, because the usdm one is in a different location i had to extend the 2 wires.

keep in mind that you'll have to massage a few wires and hoses, and cut a bit of the loom in a few places to move some things around to get everything working.

The tps plug just barley makes it but it's a secure fit.

GL with the swap.

So you used the RR IACV? The stepper motor type that is just below the TB? Or did the JDM RR come with a more standard IACV? My RR is from a USDM G20 - not positive on the year though.

I'm not stressing the wiring harness. It is already installed on a VE, so I extended wiring and trimmed loom as necessary.

Thanks.

I believe the JDM IACV is located on the side of the manifold right next to the injectors. As opposed to the USDM Highport where it's located almost near the passengers fender.

It's a more standard type and I def don't remember having to touch anything near the TB besides the coolant hoses etc.