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i have an 05' RX8 and i need to know what to do. i want to put an intake but thinking about an AEM cold air intake or a Greddy. i also heard about an HKS suction kit. i don't know which 1 is better or should i go with the Racing Beat intake and air duct? I also wonder if i should get the Racing Beat cat-back exhaust or the Greddy SP2 exhaust. also i'm lookin for a good turbo kit around $1500. if u guys have any suggestions for me please tell me and give me the links to the sites i should go to, to order these parts. the RX8 i have is the AT.
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I think you will have trouble finding a good turbo for 1500, for a good turbo you are looking at least 2500. Start off with an intake and exhaust. As dominion said the HKS exhaust is good as is the AEM intake. I had an AEM V2 intake on my Honda Civic and I was very pleased with it. Also im not sure what other upgrades you will be able to do seeing as you have the AT version which is already 41 HP less than the manual. Check in the AT specific upgrade sub-forum in the aftermarket modification forum for more info.
hey, can u guys gimme the links the good sites with good deals on the intake and exhaust. and as for the turbo, can i have a link for that as well if u don't mind? i'm saving up for the intake first and i have 1 more week to go to have enough for the intake. i thought Greddy made better ehaust than HKS but according to u guys i was wrong.
For the most part, the main difference in exhaust is going to be sound. Most of them will only give you 2 or so HP increase, and a couple will actually decrease it, but you're not going to get any noticable performance gains. You may look at finding one that you like the note on as well as lighter than stock and meets your budget.
As with most things on here, search is your friend. Spend some time reading these forums, because there is a wealth of information and it takes a bit of time to get through it.
well... i've kinda decided on getting the AEM intake. all i need to know if i should take the ECU off or not and if i should, what to replace it with cause there's alot of them for RX-8's on eBay. like there's 1 called The Juice Box, another called Optima R Performance, The Nitro Box and another called Precision Engineering. another thing is what's the difference between the ECU, the governor and the speed limiter or r they all the same?
Stay away from those ebay scam products! They do not replace your ecu. Wait until RB Has finished with their work on a performance reflash "comming soon". So far this only applies to 2004 6 speed though. As far as ebay performance chips, buyer beware!
The feedback is from employees of the places that sell that garbage, it is their job to post feedback all day. They do not work because the ecu in the rx8 is almost impossible to crack. I say almost because like I said, RB is working on it and they are legit.
ok, this is what i've decided on: HKS suction kit, HKS HI power dual exhaust, and the HKS turbo kit. i'm not gonna buy those ecu chips off of ebay and thanks guys for helping me. i'm just gonna wait for racing beat's version of the chip to come out. hopefully it's cheap lol. i hope these decisions i've made r good.
What HKS is well known for, is charging an assload for it's products.
Far as I know, the only turbo you can really get your hands on is Greddy ($3,000). There's a few coming out shortly, the better turbo kits are in the $5000 - $8000 range. And a few supercharger kits ($4,000 range). These are prices before install, and don't include stuff like gauages, boost controllers, and tuning. So add another $2000 - $3000 to the price. Even more if you need fuel management ($500 - $1500).
The Renesis and most modern engines don't get much if anything out of the mods, that 10 years ago might have given you significant gains. The days of 10hp here, 15 hp there are gone. We are in the era of 2hp here, 4hp there, and maybe 15hp if you spend alot of money.
A/F tuning and a high flow cat or midpipe will give you the most gain/$ ratio short of forced induction. But if you don't know what you're doing, tuning the A/F improperly can damage your engine. And a damaged rotary usually means a new rotary. You could add 4.77 final drive to that, but expect reduced mileage as an offset (though the AT revs low enough at cruise, that it probably wouldn't matter as much). With just those 3 mods you are looking at over $1200+install though, for nothing earth shattering performance wise.
Saving for a supercharger, or turbo kit would be better $ wise, but then who knows how long you have to wait for the kits in development.
If you're going to mod anyway prior to FI, at least choose mods that'll compliment the final choice and that are lighter than stock. Or do suspension mods that actually promote better handling.
Get out to some mountain roads if you can, it'll reduce the urge for more power now. You can only use so much power on a 25-45mph (posted ) curvy mountain road. And even the "poor underpowered" AT comes into its own in these situations.