2004 or 2010? Also porting.

[reddozen]

Originally Posted by LiveWire

Alright so I have a question. What are the performance differences between the 04 -06 RX8s and the R3? (Excluding basic driving differences and cosmetics) would I be correct in sayign that the R3 just has upgraded exhaust, intake, and suspension?

Secondly, I was wondering a lot about porting. Basically here is a rundown of questions. Feel free to add more answers in because though I know the basic concept (the diff b/t street, race, and bridge port) I dont really know to much more. So here goes:
1) How much would a street/race port cost?
2) I believe street ports are street legal and race, bridge ports are not. Is that correct?
3) Where would I have to go to get this done? Would a tuner who knows a lot about rotories be able to do this, or would I have to go to rotory engine rebuilder?
4) I understand that porting makes the car louder, less fuel efficient, and more powerful. Would I be correct in saying that the increased flow or air would create less wear on the apex seals? (less pressure on the third stroke?)

Thanks for your time guys

I think the only real difference in the R3 is suspension, wheels, and seats.
09' and up cars have an extra oil injector per rotor and a few other small changes for reliability.

Where are you from? that will make a big difference with porting / costs / etc.

1) 200~600 USD depending on what you want done.

2) nothing is "illegal" as long as it passes any emissions requirements that are required in your area. They don't know what a "bridge port" is.

3) This is a kind of ill-informed question. You need to do a bit more research. generally builders preform porting, but not all porting is equal.

4a) louder... somewhat, but this is mostly dependent on exhaust.
4b) less fuel efficient... tuning. Typically less efficient, but I get close to the same mileage with a bridge port on a renesis.
4c) more powerful... depends on the quality of the work and tuning.
4d) less wear... seriously!? more power = more wear in ALL cases.

I think you need to do a lot more research before you ask any more of these kind of questions, and I wouldn't recommend getting any port work done till you understand better what it will entail. I recommend you visit the RX8club.com forums and do a little research. Also, understand that you will not get large power gains from a Renesis from port work. We're talking no more than 5~30 HP depending on the motor and the setup. Don't expect to get to more than 220 WHP without a turbo or supercharger, or a LOT of money.

If you want something easy to tune, stick to pre 09' cars since you can use an access port to reflash the ECU. Other wise, you will have to get a standalone computer.