Thread: 2004 GT Top Swap (Lots of Pictures)

Originally Posted by Storm

I don't think I will need a MAP sensor if I am correct. And please someone correct me if I am wrong. Doesn't the GenIII Supercharger come with a MAP sensor built in? I could just have to get an adapter to plug into the MAP sensor, right?

No. First off, the Gen III doesn't have a MAP built in, it's mounted on a bracket on the back of the blower. Second, as I said, YOU HAVE TO MATCH THE MAP TO THE COMPUTER USED. If you're using your stock computer, you need to use your stock MAP.

Originally Posted by Scimmia

No. First off, the Gen III doesn't have a MAP built in, it's mounted on a bracket on the back of the blower. Second, as I said, YOU HAVE TO MATCH THE MAP TO THE COMPUTER USED. If you're using your stock computer, you need to use your stock MAP.

How the hell can I use the stock MAP if it doesn't read boost? ZZP says they will give me a tune for a top swap on my car, does this mean they will give me a PCM from a L32 engine?

So what if it doesn't read boost? It'll go to 100 kPa and stop. Oh well.

If you get one from ZZP, it's probably going to be an L32 tune, in which case you'd want to use a 2 bar MAP.

Damn this is going to be a hit on the pocketbook if I go Gen V instead of Gen III. I was hoping to get the whole thing done for around $700. Can I get the Gen III intake manifold and still use the Gen V blower?

Can anyone tell me what A and B are in this picture? A looks like a cap-off for something and B looks like what I thought the MAP was. Is this correct?

A is the cover for the PCV valve, B is just a vacuum manifold; it gives you three vac ports.

This is a picture of a Gen V supercharger it confirms that the L32 fuel rail and injectors will bolt in because that looks exactly like my L26 injector rail configuration except injectors bosses are in heads not intake manifold. Can someone point out the whereabouts of the MAP sensor on this engine.
Thanks

Continuing with a couple questions here.

1. What sensor is this?


2. Where will this hook up to?


3. Will need this tube after the swap?


4. Where will this sensor be located? Is it going to be on the supercharger? What is this sensor called?


5. To take the fuel rail apart I take that clip off obviously... do I need a special took to get the connection apart or do you "pinch" it and it comes apart?



6. Do I need this coolant port from an L67 intake or are they interchangable?


7. MAF sensor (obviously) I keep my stock MAF for the swap?

1. That's the EVAP purge solenoid. It's one I hadn't really considered. If you're using a Gen III, you'll need the L67 EVAP setup. The Gen V uses the same setup.

2. That's the brake booster vac line, it goes to that vacuum manifold on top of the blower that we talked about earlier.

3. That's another one I hadn't considered, it's the PCV inlet. You'll either need to get mini to add a port for that on the adapter or run the line to the front valve cover instead. Again, that's only if you use the Gen III, it should hook right up to the Gen V.

4. That's the MAP sensor.

5. You need a special tool, available at any auto parts store.

6. They're the same.

7. Keep your stock MAF.

So I am going to go with the Gen V blower. To do this can I jsut get the Gen V blower and the L32 lower intake manifold and get L67 heads? Bascially what I am asking is will the L32 intake manifold bolt up directly to the L67 heads or do I need to get L32 heads too?

The heads themselves are the same casting. No difference at all.

you dont need the L32 LIM. but if you really want one and if you cant find a L32 intake, then just cut and open the L67.

Speaking with another member on here who has done this same swap before except he did a Gen V on a 2005 GT, he said I am goingto have to wire in a barometric sensor to the PCM as well as wiring in the wires for the BBV. Easy to forget these things looking at the big picture. Doesn't sound too painful though. My parts list right now is looking like $1100 total for a Gen V swap. I think I could get a Gen III swap for closer to $800 or even $750.

Originally Posted by matt5112

First one is the MAP sensor... Second one doesnt need to be hooked up if you turn TCS everytime you get into the car.

What does your second sentence mean? Traction control system? So I don't need a barometric sensor because it only effects traction control system? very confused.

just get a full l32 top lim heads s/c map rail and injectors harmonic balancer and ideler pully reason i say l32 s/c is because it is more efficient and easier to put ur tb on to