help needed.
07-01-2011, 03:10 AM
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help needed.
hey i bought an aem intake and i need someone to lead me on to other parts i can put on the 8, i need to get my 8 ready for some drag racing... i dont want to put forced induction on it. i need some parts that will get me around 300hp or more.
07-01-2011, 03:39 AM
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I cant believe the amount of people that think they can gain 100 HP with bolt on mods, unless they think the RX8 has much more HP stock than it actually does. Just curious, what can one expect to gain from bolt on parts like exhaust, intake, maybe a cobb? anything else im forgetting?
07-01-2011, 03:47 AM
#4
Almost unnoticeable. Some have been shown to decrease power.
When combined with the right upgrades and tuner, you have the potential of 200HP+
Yeah... mid-pipe, BHR ignition coils, lightweight flywheel.
These could benefit more when combine with the AccessPort.
07-01-2011, 12:00 PM
#5
I can understand why people believe you can get gains with bolt-ons- because with piston engines, they do work.
Also, with that in mind, I also understand why people think 300hp is achievable- because they believe that the engine has 238hp. They don't take into account the loss through the drive train.
That being said, to the OP, the 8 is not a drag car. Go buy a mustang for that
Use the 8 as a time attack on the track, or auto-cross. Enjoy the 8 for what it is
Also, with that in mind, I also understand why people think 300hp is achievable- because they believe that the engine has 238hp. They don't take into account the loss through the drive train.
That being said, to the OP, the 8 is not a drag car. Go buy a mustang for that
Use the 8 as a time attack on the track, or auto-cross. Enjoy the 8 for what it is
07-01-2011, 12:15 PM
#6
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v8 swap, 75hp shot no2 kit with midpipe and tune maby 250 but doubtful. if you want a drag car sell your 8 to someone that will apperaciate it
07-03-2011, 10:16 PM
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Please do.
No really. Nothing for power. Go for reliability stuff alone, and just enjoy the car for what it is.
Get started here: https://www.rx8club.com/new-member-forum-197/new-potential-owners-start-here-202454/
Enjoy the RX-8 for what it is, a world class handling road course car.
Don't bother trying to turn it into a dragster unless you have more money than brains.
No really. Nothing for power. Go for reliability stuff alone, and just enjoy the car for what it is.
Get started here: https://www.rx8club.com/new-member-forum-197/new-potential-owners-start-here-202454/
Power Modifications:
From the factory, the 8 is VERY well tuned (mechanically). There are only 2 things you can do for easy power:
- AccessPORT custom tune to remove some of the "safe" parts of the tune
- Removing the naturally restrictive catalytic converter.
Doing the rest of the common upgrades piston cars get (intake, exhaust, pulleys, etc...) nets you MAYBE 5hp. MAYBE. Depending on the brand, alot of them are inferior to the OEM stock system, and plenty cause you to lose power.
If you want power, you have to go forced induction, turbo or supercharger. And you need a starting amount of about $8,000 to $10,000 for a complete set up. If you find what you think is a "deal", please don't get fooled. If you spent $1,500 on your turbo system, you will still spend $8,000 to $10,000 in modifications, errors, swapping parts, getting stuff to finally work right, and probably an engine replacement along the way. If you dont have an AccessPORT, you have very little chance in making it work.
If you don't go that route, then the most you can expect is about 200 whp without a custom engine rebuild, which can run you $5,000+ once you factor in the labor of pulling and reinstalling the engine and the shipping. The advancements in porting work have been slow coming, but they are still moving the needle upwards.
BDC has taken the new top N/A dyno posted on 5/16/2011 here: https://www.rx8club.com/series-i-major-horsepower-upgrades-93/bdc-street-port-vs-stock-port-dyno-comparison-216762/ 223whp:
Please note that "heavy" has not been defined as of this edit. The gains are from more than 1 source. Likely full 3 inch headers to tips on the exhaust, entirely unknown what the intake is. The porting work above was mostly on the intake ports rather than the exhaust ports. There was also likely significant improvement in the seal tolerances over factory specs.
Don't get fooled by any "chips", ebay or otherwise. There is no "chip" for the RX-8 that will do anything beneficial. The best you can hope for is nothing at all...a costly metallic sticker on your ECU. You can easily fry your ECU with one though, and that is $1,600+. The only flawless method of improving the ECU is through an AccessPORT. Hymee's ProTuner software and brick is also capable, but there are still bugs at the time of this post, hard to come by, and it is possible to wipe your ECU accidently. The piggybacks such as Interceptor-X and GReddy's E-Manager are terrible for the RX-8. You can get it to run, kinda. But you won't be making more power than stock.
If you think you want to go turbocharging or supercharging your engine, start here: https://www.rx8club.com/series-i-major-horsepower-upgrades-93/ and keep reading thread after thread. Get to know the issues people have had, read their responses, their solutions, their frustrations.
What about other engines?
Don't even think about posting a question about an engine swap. Please. Do yourself a favor and just avoid clicking the "new thread" button. 20B (3 rotor engines) have been done, but they cost $20,000+ just for the swap itself. 4-rotor swaps have been completed I think twice. They run $100,000+. There have been a few swaps with the older 13Bs from RX-7s. They are cheaper, but still alot of work.
There have been NO other successful swaps. Not the Mazdaspeed3 engine, not a V8 (LS or 5.0), not a 2JZ, etc.. A few have been started, but the farthest completed was an LS swap that was to the running status before the car was dropped off the lift and the project stalled, no word since. Does it mean these other swaps can't be done? Not at all. It just means that you will have all of the pain, frustration, lack of answers, lack of support, and nightmares of being first. And if successful, you would have the glory from a few, the hatred of some, and the lack of notice or caring from the rest.
From the factory, the 8 is VERY well tuned (mechanically). There are only 2 things you can do for easy power:
- AccessPORT custom tune to remove some of the "safe" parts of the tune
- Removing the naturally restrictive catalytic converter.
Doing the rest of the common upgrades piston cars get (intake, exhaust, pulleys, etc...) nets you MAYBE 5hp. MAYBE. Depending on the brand, alot of them are inferior to the OEM stock system, and plenty cause you to lose power.
If you want power, you have to go forced induction, turbo or supercharger. And you need a starting amount of about $8,000 to $10,000 for a complete set up. If you find what you think is a "deal", please don't get fooled. If you spent $1,500 on your turbo system, you will still spend $8,000 to $10,000 in modifications, errors, swapping parts, getting stuff to finally work right, and probably an engine replacement along the way. If you dont have an AccessPORT, you have very little chance in making it work.
If you don't go that route, then the most you can expect is about 200 whp without a custom engine rebuild, which can run you $5,000+ once you factor in the labor of pulling and reinstalling the engine and the shipping. The advancements in porting work have been slow coming, but they are still moving the needle upwards.
BDC has taken the new top N/A dyno posted on 5/16/2011 here: https://www.rx8club.com/series-i-major-horsepower-upgrades-93/bdc-street-port-vs-stock-port-dyno-comparison-216762/ 223whp:
Please note that "heavy" has not been defined as of this edit. The gains are from more than 1 source. Likely full 3 inch headers to tips on the exhaust, entirely unknown what the intake is. The porting work above was mostly on the intake ports rather than the exhaust ports. There was also likely significant improvement in the seal tolerances over factory specs.
Don't get fooled by any "chips", ebay or otherwise. There is no "chip" for the RX-8 that will do anything beneficial. The best you can hope for is nothing at all...a costly metallic sticker on your ECU. You can easily fry your ECU with one though, and that is $1,600+. The only flawless method of improving the ECU is through an AccessPORT. Hymee's ProTuner software and brick is also capable, but there are still bugs at the time of this post, hard to come by, and it is possible to wipe your ECU accidently. The piggybacks such as Interceptor-X and GReddy's E-Manager are terrible for the RX-8. You can get it to run, kinda. But you won't be making more power than stock.
If you think you want to go turbocharging or supercharging your engine, start here: https://www.rx8club.com/series-i-major-horsepower-upgrades-93/ and keep reading thread after thread. Get to know the issues people have had, read their responses, their solutions, their frustrations.
What about other engines?
Don't even think about posting a question about an engine swap. Please. Do yourself a favor and just avoid clicking the "new thread" button. 20B (3 rotor engines) have been done, but they cost $20,000+ just for the swap itself. 4-rotor swaps have been completed I think twice. They run $100,000+. There have been a few swaps with the older 13Bs from RX-7s. They are cheaper, but still alot of work.There have been NO other successful swaps. Not the Mazdaspeed3 engine, not a V8 (LS or 5.0), not a 2JZ, etc.. A few have been started, but the farthest completed was an LS swap that was to the running status before the car was dropped off the lift and the project stalled, no word since. Does it mean these other swaps can't be done? Not at all. It just means that you will have all of the pain, frustration, lack of answers, lack of support, and nightmares of being first. And if successful, you would have the glory from a few, the hatred of some, and the lack of notice or caring from the rest.
Enjoy the RX-8 for what it is, a world class handling road course car.
Don't bother trying to turn it into a dragster unless you have more money than brains.
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07-03-2011, 10:44 PM
#18
The X is silent
What you said about the lack of successful swaps isnt entirely accurate:
http://www.youtube.com/watch?v=dm0IK...eature=related
I'm pretty sure that info was correct at the time you wrote the post, in your defense.
There are other vids on U-tube with LSx swaps and the 1jz-gte (which i like over the 2jg)
But there is real money going into these swaps. Most are done by people with all of their own fabrication equipment and lots of experience. As far as people on this forum, I think there was one dude in the middle east who did a 2jg swap, but again, he had the means to do something like that himself. I dont think his post count ever hit 10, either, so I dont think he's really around
Anything can be done if you're willing to spend the money.
http://www.youtube.com/watch?v=dm0IK...eature=related
I'm pretty sure that info was correct at the time you wrote the post, in your defense.
There are other vids on U-tube with LSx swaps and the 1jz-gte (which i like over the 2jg)
But there is real money going into these swaps. Most are done by people with all of their own fabrication equipment and lots of experience. As far as people on this forum, I think there was one dude in the middle east who did a 2jg swap, but again, he had the means to do something like that himself. I dont think his post count ever hit 10, either, so I dont think he's really around
Anything can be done if you're willing to spend the money.
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