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General RX-8 Engine Performance Upgrades Info/Questions

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Old 12-18-2003, 03:23 PM
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Originally posted by Elara
Sorry, I had a Christmas potluck I had to attend for lunch :p

So, will you marry me? I think you are dreamy
Old 12-18-2003, 03:31 PM
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ok...i think matt is lonely...lol...
Old 12-18-2003, 03:33 PM
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Originally posted by XeRo
ok...i think matt is lonely...lol...
Oh now that hurts

I am just attracted to powerful, intellegent women. (point for me Elara? )
Old 12-18-2003, 05:20 PM
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sorry to burst your bubble but she's married

when she first got her 8 she posted pics of the car and him in the backround
Old 12-18-2003, 05:57 PM
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Originally posted by mikeb
sorry to burst your bubble but she's married

when she first got her 8 she posted pics of the car and him in the backround

I am still holding out hope!
Old 12-18-2003, 07:21 PM
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danaica is always on speedvision

doesnt she race f1
Old 12-18-2003, 08:30 PM
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Originally posted by matt
I am still holding out hope!
Buy me a Borla exhaust and maybe one of Canzoomer's ECU kits and we'll talk :D
Old 12-18-2003, 08:47 PM
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Is it just me or is that Danica chick downright scary?

She's got some wicked eyes, and looks like she could whoop my ***!!!

Just thought I'd throw that in there.... yep, I'm an idiot.

Lata,

Brit
Old 12-18-2003, 08:56 PM
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Originally posted by Elara
Buy me a Borla exhaust and maybe one of Canzoomer's ECU kits and we'll talk :D
So you are saying there's a chance

Borla, HKS, B&B, I'll get them all for you. One for each day of the week.

Name your Mod and it will be on the next fedex truck
Old 12-18-2003, 08:58 PM
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Originally posted by mikeb
sorry to burst your bubble but she's married

when she first got her 8 she posted pics of the car and him in the backround
LOL..."him" hahahaha.
Old 12-19-2003, 01:05 AM
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elara, thanks.

Everyone has an opinion or idea of how this is all supposed to work. I have travelled to many places around the world and have met many different people and have enjoyed the different cultures. Through my travels and experiences I have learned many things. One of those lessons is that it is completely impossible to satisfy everyone one. I am not trying to satisfy anyone by my choices of "my intended MOD's" I truly wanted to read the opinions of others. I read through many threads and I picked and chose the mod's that I thought would be the best match. If there was something technically wrong with the choices of my intended mod's I would have loved to have heard them.

BTW. Elara where is your photo posted? Everyone is commenting on how attractive they find you to be. I think some proposed as well. Exciting.
Old 12-19-2003, 07:13 AM
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I don't have one posted- wouldn't want to dissappoint anyone after all the hype! Maye I'll get braver after the holidays.
Old 12-19-2003, 07:28 AM
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oh come on...now you got all of us wondering....i mean..Danicka picture is posted...hehehe
Old 12-19-2003, 07:52 AM
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Originally posted by matt
So you are saying there's a chance

Borla, HKS, B&B, I'll get them all for you. One for each day of the week.

Name your Mod and it will be on the next fedex truck
Hey Matt, I'll marry you if you give me some mods
Old 12-19-2003, 09:27 AM
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I'LL SHOW YOU MINE IF YOU SHOW ME YOURS!

It would be nice to be able to purchase all of the mods I have listed at one place. Walk into the store and hand them 2 grand cash and say make it happen. Drive out with an awakened beast. MUch Fun to be had!!!
Old 12-19-2003, 02:16 PM
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You know...I'm extremely cursious now as to why Mazda didn't have S-03's on the RX-8 in OE trim...by the specs from tirerack, the S-03's seem to outperform the RE040's in just about every category. They don't seem to cost that much more per tire either...

Those might be my first "mod"...which means I have...12250 - 17250 to go before anything gets changed.
Old 12-19-2003, 11:13 PM
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What parts to get?

Well ive been looking at the rx-8 alot, and the only thing i dont like about it is only 200hp (i want the automatic cuz its 2g cheaper, and that money can be put to use elsewhere). But after i get more money what parts could i put into it to increase the hp. I dont want to put any no2 into it cuz ive heard to many bad things about it, so im just gona forget all about that option. Any thoughts?
Old 12-20-2003, 10:06 AM
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?

You spend 2g less and you will have to spend 2g to put it at the performance level of the manual.
Old 12-29-2003, 10:53 PM
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No emission laws in HI, how do I get my HP back? (+ VFAD mod help)

I just found out we don't have the crappy emission law here in Hawaii. How do I get my horsepower back? Any way to reflash my baby?

Also, from where is the secondary shutter valve controlled? Can I have it open by default? Either by hacking into the "system" or my mechanical adjustment? If that's too much hassle, I'm shooting straight for the variable fresh air duct, same deal, open by default either electronically or mechanically.

What do you think? :p

I would jump under the hood but it's already dark outside and I can't see anything. I came up with this just an hour late

Last edited by TrAsHeR; 12-31-2003 at 12:35 AM.
Old 12-30-2003, 12:25 AM
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Go for Canzoomer's ECU piggyback mod, a high flow catalytic converter (or none at all, aka a "B pipe") and a high flow cat-back muffler system, like the RotaryExtreme, Borla, or similar. Also consider a high flow intake, like the RotaryExtreme or K&N.

Hope this helps.
Old 12-30-2003, 03:34 AM
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Re: No emission laws in HI, how do I get my HP back?

Originally posted by TrAsHeR
I just found out we don't have the crappy emission law here in Hawaii. How do I get my horsepower back? Any way to reflash my baby?

Also, from where is the secondary shutter valve controlled? Can I have it open by default? Either by hacking into the "system" or my mechanical adjustment? If that's too much hassle, I'm shooting straight for the variable fresh air duct, same deal, open by default either electronically or mechanically.

What do you think? :p

I would jump under the hood but it's already dark outside and I can't see anything. I came up with this just an hour late
Hi TrAsHeR,

I'm from Mililani, where are you from?

All 50 states have emissions laws under the federal government. Hawaii just doesn't have a mandated IM (Inspection and Maintenance) program to periodically measure emissions like some other states. I believe even the "safety checks" still have a visual inspection of emissions equipment though.

Easiest way to get the HP back would be a fuel-air mod like Canzoomer's. Replacing the cats with aftermarket ones will be expensive and will probably only yield small gains. It is also technically illegal unless the original cats failed. Forcing the shutter valve open will probably kill your hp/torque at lower rpms. At higher rpms, the valve is normally open so there would be no gain there either.

It would be interesting if you would try forcing the fresh air duct open and doing some testing to see what performance differences there are but I wouldn't expect too much.

How about that Hawaii bowl huh?

Brian
Old 12-30-2003, 09:58 AM
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thx Omicron, I'm going to read into those.

Buger: I'm from Mililani as well, it's a small world, isn't it
I'll report progress on how well it's going with the VFAD, not sure if I can do it today tho, got too much work on my hands. I'll be back

/Michael
Old 12-30-2003, 10:00 AM
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Happy to help.
Old 12-30-2003, 08:09 PM
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This is what Racing Beat has to say about getting more HP out of your renisis.

“Racing Beat is about to come out with a number of products for the new RX-8. Others have already brought products to the market with what we have found to be some rather exaggerated claims. Rather than echo these claims we prefer to report exactly and honestly the results we see. In the long run, the customer will appreciate dealing with reality, not a wish. In the past it was common to see improvements in the exhaust and intake systems of rotary engines in the 12-20 HP bracket, depending on the product. Headers in particular were a great source of power- this is no longer true. Although we are still working on a final header design, we have yet to observe more than a slight horsepower gain. Space is a limiting factor to becoming creative with a header design, and besides, the port configuration is fairly restrictive on the Renesis engine. We have found that Mazda’s exhaust manifold design is actually pretty good. Mazda has already wrung almost nearly everything they can from the engine. The are small improvements possible, but the days of the early rotaries when 10-20 horsepower gains could be realized fairly easily, those days appear to be over.”

The following table lists the measured power gains from various aftermarket components. Testing has been conducted on the Racing Beat engine dyno with both pre-production and production Renesis engines.

Intake – enlarging the oval inlet to the factory air box - +2 HP (this modification eliminates the VFAD intake duct.) Developmental work is still being undertaken.
Headers – approximately 4 HP peak power gain.
Mufflers – muffler & connecting pipe - 2-3 HP.
Removing the muffler from the car (engine) – about 4 HP.
Remove catalytic converter and resonator from the engine completely, and replacing with “cat” replacement tube – max benefit 8 HP – regardless of what muffler is used (or even no muffler).

“The muffler “off” will yield about 4 HP, with a very loud exhaust note. With it “off” the car, the noise is unbelievable! We find 2-3 HP peak RPM maximum improvement from our exhaust, or any competitive system that we have tested. So someone can see from these numbers, it is quite difficult to get a lot more HP from this engine. The max potential with a header and race exhaust would be around 10HP.”

Just got this, and thought I'd share it with you guys.

CJ
Old 12-30-2003, 08:27 PM
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This makes me want to buy a RE intake, and have it tested...back to back on the dyno. If anyone wants to pay for the intake, I'll pay for the dyno time. CJ


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