Thread: Custom VE to DE (RR) TB Adapter Plate

Oh really? Did you get it from Keo? That thing served me well, I hope it serves you well too . That's a 1996 ECU, keep that in mind when dealing with emissions.

A new engine harness will probably be around $75-100. It's worth it because you don't have to do a step down harness and it should have all of the modern plugs. Now I would try to find out if it will work on the B15 before scouting for one. But last time I checked P11's and B15's where about 100% identical.

Whew I'm glad you didn't pay that much!

The AC wire from the compressor goes to the AC relay. I'll be uploading some wiring diagrams to show all of this . Alternator wire goes directly to the battery, that would be always on.

Yes, Keo is the man! I'm hoping it helps with emissions. My car is running so rich I would fail a sniffer test at 500 yards!

I think they are pretty much the same as well. But I will do some more checking. Thanks.

Cool, thanks for the tips. I look forward to the diagram.

I also look forward to putting my B15 ECU out of it's misery. The poor thing struggles everyday trying to make me happy....and fails miserably!

Once you get the ECU in you can tune it out and make it not as rich, should see a gas mileage increase too .

Here is the diagram. Blue is what you need to do.

^ Nice. Thanks, I think I can manage that!

It's fairly easy. The hardest part is running the wire with the stock wires (so that it doesn't look like crap).

I am not sure if you can make the rr iacc work with a 16 bit or 8 bit ecu. Iirc vadim said the rr iacv system sucks so there is no point in using it anyway if you don't have to. Also make sure to install a wideband if you already haven't so you don't destroy your engine. Get everything running right first then work out the bugs. I am running codless so its definitely possible.

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Well, If you are running codeless that gives me some hope. I think my new ECU with a wideband, which is on the Agenda as soon as I can get one, will solve some of my issues.

As far as the RR IACV, it def. isn't ideal but if it will work with a B14 ECU and I can get it bored out, it might be worth it. But who knows, I'll probably just get the VE one bored out a few mm while its off the car and then just wire up the AAC and stuff. Probably a better idea!

If you're boring out the tb I would think that it should be the same size as the intake manifold. Also, I heard someone with a b14 lost power when switching to the xcessive intake manifold. Anyway, good luck with the build. You should b able to run codeless as well

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The RR IACV requires a lot of ECU adjustments. To put in into perspective, when switching to a VE or DE ECU, you only use two wires. One is a constant power for the IACV, another is the ecu controlled ground. The four other wires get shielded off.

I don't think even a 16bit ecu can control the RR IACV properly enough to have a good running car.

I also hate RR IACV's, I've had two of them fail on me within months of each other. They are crazy expensive to replace and have too many moving parts.

Well I think with all things being said the VE TB looks like a better bet. Vadim, I hadn't thought about the 16 bit ECU running a 32 bit TB, but it sounds like a headache I probably don't need.

Fubar1o2 ya I will make sure that it matches the VE plenum opening but I could always smooth away a mm or 2 on the opening if need be?! Thanks for the wishes.

Appreciate everyone's help!