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Old 05-20-2015, 07:47 PM
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I want to increase power without touching the engine

Hello I have a Mazda RX-8 August 2004 since last year , I put a Pflow print a booster, as exhaust catalytic converter performance , magnaflow full .... and heades but I find , what still lacks juice haha I want to make it any worse 300 350 HP to be more premium? on the start you have suggestions for true connoisseurs me my Rx -8 is a gem, thank you
Old 05-20-2015, 07:50 PM
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Can't understand you 100% byut it sounds like what you need is a small turbo like the Greddy . Quite a big undertaking though so I hope you have the skills and $ to di it properly ,
Old 05-20-2015, 09:05 PM
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Start here:

https://www.rx8club.com/new-member-f...rx-8-a-233937/
Old 05-21-2015, 07:53 AM
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cool, I like to talk with real fan , I 'm on the right forum, I 'm from Canada a little trouble with my English, how do I show pictures of my car and modification ?
Old 05-21-2015, 09:05 AM
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T'es tu de Quebec au quelque part?

Long story short: to reach 300+ you need a turbo.

You can attach pictures to your post, there is an attachment button. Or put them on photobucket and post the link here.

List specifically what you added to the car, some of those mods, like the Pflow, might be losing you power. How old are your ignition coils/spark plugs/wires? There is power to be found by replacing these if they're old (and it could save your engine).
Old 05-21-2015, 09:30 AM
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oui MOntréal plus précisément Lachine je veut pas que n'importe qui fouille dans mon moteur rotatif
Old 05-21-2015, 09:37 AM
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Old 05-21-2015, 09:39 AM
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Old 05-21-2015, 09:40 AM
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Old 05-21-2015, 09:41 AM
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Old 05-21-2015, 09:45 AM
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Old 05-21-2015, 09:46 AM
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Ok yeah. Remove that hot air intake, put the stock one back. You're losing power.

Ignition coils?
Old 05-21-2015, 09:53 AM
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I changed everything respect to the exhaust and I Hypertech computer I added , but I like to have + power on the start and more power typically 300 HP would do well my business.
Old 05-21-2015, 09:56 AM
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you wont hit 300hp without forced induction and ive never seen so much rust under an 8
Old 05-21-2015, 10:00 AM
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I have not changed my candles and my still spinning , I expect that, I ordered from EBAY .
Old 05-21-2015, 10:01 AM
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Originally Posted by stvnscott
Excerpt:

Guideline: Estimated power 'caps' are ~230whp NA and ~400whp turbocharged. That being said, getting past ~215whp NA gets very expensive, very quickly. Exceptions are possible, but don't expect it. Getting past ~300whp with FI will usually also involve an engine rebuild, either because you want to do it properly in the first place, or the engine you have shattered while trying. Crossing the 300whp mark also means that you can't expect that your engine will last more than ~10,000 miles. More is possible, but you can't EXPECT it. To get to 400whp you will require a complete top notch engine rebuild with significant changes to increase the strength of the engine, including the block itself. Don't expect your engine to last long. Like, maybe a few pulls.
Old 05-21-2015, 10:02 AM
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Originally Posted by Berger81
I changed everything respect to the exhaust and I Hypertech computer I added , but I like to have + power on the start and more power typically 300 HP would do well my business.
Did you tune the hypertech on a dyno? What kind of power are you making now?

What brand is your header?

Just so you know, these engines come near maximum power from the factory. You can't really get much more out of it, maybe 20hp if you get it ported, etc. After that it's turbo or NOS...

Originally Posted by Berger81
I have not changed my candles and my still spinning , I expect that, I ordered from EBAY .
If they're old, that could be good for 20hp just by itself. Also... ebay coils... be careful man.

Last edited by Loki; 05-21-2015 at 11:24 AM.
Old 05-21-2015, 10:15 AM
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holy rust, that sub-frame will not be able to sustain stock power much longer let alone the upgrade you are seeking...but I hear there are new LED candles out for RX8 that might get you the power you need :-)
Old 05-21-2015, 11:31 AM
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Yeah I settled hyper tec there , I have to change the candles and spinning and changing the oil it has been two weeks, I took it out , what's the best oil for this vehicle ?
Old 05-21-2015, 11:33 AM
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think you can not change much about the rotating because they are fragile and complicate engines N'Ai it be better if you put 3 or above in 4000 $$$ and the engine power one month after jump .
Old 05-21-2015, 11:35 AM
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wtf are you talking about candles for? are you taking your car for a romantic dinner?
Old 05-21-2015, 11:40 AM
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Candles = spark plugs in french.
Old 05-21-2015, 12:38 PM
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Originally Posted by Berger81
think you can not change much about the rotating because they are fragile and complicate engines N'Ai it be better if you put 3 or above in 4000 $$$ and the engine power one month after jump .
They're actually simpler than regular engines, which is why it's difficult to modify them in NA form. There just aren't enough parts to change. It's not like a piston engine where you can try different cams, different pistons, etc.

So your only real solution for big power gains is boost (or replace the rotary with something else entirely).

Soooo how much power are you making now with all the mods?
Old 05-21-2015, 12:41 PM
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spinning = coils
Old 05-21-2015, 12:47 PM
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this thread makes my head hurt. i only speak murican and ******* so ill leave it to the syrup drinkers


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