Last night I read the lastest issue of Option magazine (JDM). It had a nice 10 or so pages on the RX-8. One article was on the work that FEED is doing on the Renesis. They figure that the 6PI variable intake is good, but that side port exhaust sucks... good for mazda to make the car clean, but bad for ultimate performance. Their idea is a hybrid engine. They are taking the front, intermediate and rear housing, plus rotors from the Renesis and peripherial port exhaust rotor housing (I am not sure from which... custom or from 13B-REW). They've only just gotten all the parts and assembled it so no telling what it will do, but they expect some loss of low-end torque, but to pickup 30hp or so.

Just thought it was an interesting idea that people might want to discuss...

Option Magazine? What does the cover look like? I might swing by Kinokuniya and look for it.

Lastest 4/2006?

http://www.sun-a.com/option/??

Thanks for the heads up Japan8.

very interesting, i'll pick it up this weekend.

^Not that I'm exactly fluent in Japanese, but where can one get this mag?

Taka.... yep that's it... with the sketch of the RX-8 on the front.

There is also an article from the RE Amemiya team on ECU tuning. They've partially cracked the ECU and have been doing fuel and timing maps, limiter cut (speed limiter I believe) and SDAIS control as well. They want to get down to everything like electronic throttle control, traction control and such. There's a pic of the maps and data dump (looks like the one in the "cracking the ecu" thread) in the article as well.

^Not that I'm exactly fluent in Japanese, but where can one get this mag?

If you can't do japanese on the web (where you can easily copy and paste into online dictionaries and translators) then you probably don't want the mag. It's a JDM magazine and as such is only in Japanese. Hence the Kinokuniya comment... Kinokuniya is a Japanese bookstore headquartered in Shinjuku, Tokyo. They have a store in NYC as well where most colleges order their Japanese language class books from.

if your city has a Japantown check the bookstores there, otherwise you can google places to get them online too

^Not that I'm exactly fluent in Japanese, but where can one get this mag?

you can pick it up at oakland chinatown :)

Kinda funny... comments are all about the magazine itself and where to get it. None are about the actual thread topic... using peripherial exhaust ports on the Renesis... :confused:

So, the zero overlap will be a thing of the past - looks like a header is in their future also if they get it to work.

Maybe they are thinking tubo? Are they going to use the high compression rotors?

If you mean high compression as in the stock Renesis rotors... then yeah. Headers is something else being talked about... well needed too with this setup... the stock Renesis one isn't going to work. I only skimmed the article, but I don't recall having seen any talk of FI for it yet... maybe in the future. The engine hasn't even been tested yet (as they just got the parts and assembled it) so they are looking at getting it running and seeing what it'll do N/A. After that...

Yeah... zero overlap will be gone on this FEED engine, and low-end torque will be down further they say, but they are hoping for better gains from the mid-range on up.

Hmmm... i dont know if i would want to lose any more low-end torque. It'll be interesting to see what their and RE's results show.

The japanese tuners have seemed to be very quiet, but its pretty clear they are working hard and will be bringing the fire very soon.

-hS

Last night I read the lastest issue of Option magazine (JDM). It had a nice 10 or so pages on the RX-8. One article was on the work that FEED is doing on the Renesis. They figure that the 6PI variable intake is good, but that side port exhaust sucks... good for mazda to make the car clean, but bad for ultimate performance. Their idea is a hybrid engine. They are taking the front, intermediate and rear housing, plus rotors from the Renesis and peripherial port exhaust rotor housing (I am not sure from which... custom or from 13B-REW). They've only just gotten all the parts and assembled it so no telling what it will do, but they expect some loss of low-end torque, but to pickup 30hp or so.
Is it me, or does it sound like they are pretty much re-creating the 13B-REW???

It's cool what FEED is doing, but they are basically rebuilding the engine. That'll cost some $$$$. But I still want to see what they come up with. Should be pretty good.

The ECU cracking is something that needs to go down. After reading that thread about an article where a Mazda R+D team in (Australia I think), built a turbo 8 with 360+hp. What was even more interesting is that guys who built said it daily drivable. Relatively speaking, it obviously was easy if he had access to the ECU code (from article:Engine-management is handled by a tweaked standard computer without any piggybacking chips. ). I've got to find that thread.

Found it.
http://carsguide.news.com.au/story/0,20384,17835596-21822,00.html

Seen that RX-8... but did not get much secret out of it. I doubt it is run by cracked ECU ... since I know no one has cracked it yet!

I have doubt in their reablility. We had a National last October where this car made an appearance, but at the pit lane only. They did not run on the track at all.

^^ Uh RE Amemiya has basically cracked it. Other JDM shops that offer to tune your ECU probably have too. It's not impossible, it's just that most places don't want to invest the time and money into something that has such a small market.

Not in Australia though... hopefully not for long *(oh I am in so much trouble now ;))

they've cracked some of the software of the Japan market ECU only

Not in Australia though... hopefully not for long *(oh I am in so much trouble now ;))Your in trouble :rock: so spill some more beans

they've cracked some of the software of the Japan market ECU only
Well Type S so far... :D:

Your in trouble :rock: so spill some more beans
HMMMMHMMHMHMMMMHMMMHMMMMMM..... (tape over mouth).

I think hopefully it will be soon. That is all.

If you're refering to Hymee, he's already mentioned that he's got something in the works for this, but no specifics or timeframe.

they've cracked some of the software of the Japan market ECU only

Do you really think that a different ECU was built for each market? Different "tunes"? Yes. This would of course cause problems for things like eManage where just the different in US ECU flashes causes problems. However, the core programming? I doubt that there is much if any difference.

I addressed that in the other thread where you mentioned this

in summary, do you honestly think they're just going hand their work over to someone else?

1. This post came first.
2. Who ever said anything about anyone "hand[ing] their work over to someone else"? Please quote where this has been said.

You won't find it, because I never said that. I simply said that RE Amemiya and other JDM tuners have partially cracked the ECU and have been reflashing it for JDM owners. So the ECU is crackable. That was my only point. In JDM they don't even sell any kind of "handheld flasher" or whatever. You have to send them your ECU or bring your car into their shop. Obvious issues for getting yours done, eh?

Sorry to stray off the topic of this thread but do they mention anything about the artwork on the cover? Or is it just that artwork? http://www.jdm-option.com/
http://www.jdm-option.com/newbook/regular/img/newbook_op_img_0221.jpg

the artwork looks good, but you would say good by to the rear doors :)

I personally don't see the point. It sounds like a REALLY expensive equivalent to a very small centrifugal supercharger...robs the low end and doesn't do jack until you wind it up. Given that everyone already bitches about the lack of low end on this thing, why would anyone do this...maybe for drag racing and dyno bragging rights (can you really brag about stock+30hp?) but no way for anything street driven.

jds

If you mean high compression as in the stock Renesis rotors... then yeah. Headers is something else being talked about... well needed too with this setup... the stock Renesis one isn't going to work. I only skimmed the article, but I don't recall having seen any talk of FI for it yet... maybe in the future. The engine hasn't even been tested yet (as they just got the parts and assembled it) so they are looking at getting it running and seeing what it'll do N/A. After that...

Yeah... zero overlap will be gone on this FEED engine, and low-end torque will be down further they say, but they are hoping for better gains from the mid-range on up.