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-   -   Mazda knew about Renesis Turbo (https://www.rx8club.com/series-i-major-horsepower-upgrades-93/mazda-knew-about-renesis-turbo-31248/)

TeamRX8 04-26-2014 05:49 PM

They make upwards of 370 whp now now in a race application, which is much more continuous WOT use than a street car will see, but as I recall from the past Diasio website pages they encountered most of the problem going to higher boost and backpressure differentials trying to get more power out of them.

Brettus 04-26-2014 06:39 PM


Originally Posted by TeamRX8 (Post 4594205)
They make upwards of 370 whp now now in a race application, which is much more continuous WOT use than a street car will see, but as I recall from the past Diasio website pages they encountered most of the problem going to higher boost and backpressure differentials trying to get more power out of them.

Yes ................ but weren't they also running premix only ?

TeamRX8 04-27-2014 12:20 AM

I have no recollection of this. While I've seen a (very) few people claim otherwise, in a true racing application the premix can be so heavy (multiple ounces per gallon) that I find it hard to believe that it matters, plus I know of other Renesis applications and high level builders who eliminate the MOP.

Brzenski III 12-24-2018 09:18 AM


Originally Posted by rx8 dx (Post 408880)
I dont doubt it could be done. I know that a bunch of people are working on the project. It just that, is strange that Mazda did not coup on a FI for the renesis like they did with the 3rd generation RX7's.

Because the Renesis is putting out pretty much the same amount of horsepower As the TwinTurbo the RX7 3rd generation. If driven conservatively it gets better gas mileage and lower in the shins that was the whole point of the renesis coming stock . But it can definitely be done and it has been done at this point now since this post is old. It just isn’t cheap you can have two of three things ..Fast, cheap ,or reliable

UnknownJinX 12-24-2018 01:55 PM

This is a pretty old thread.

232 BHP(the generally agreed figure for RX-8) and 276 BHP(the highest output option for FD) are not close no matter how you slice it. This is especially considering RX-8's lack of low-end power.

And remember that FD had the "Gentlemen's Agreement" holding it back - it could have been more if that wasn't there. And an FD is a lot more tunable than the NA RX-8.

The main reason RX-8 is stock without a turbo is really easy: cost. The FD was priced very close to a Corvette from the same years. RX-8 was priced at 50%~60% of a Corvette from its time. With the lower price point, turbo is out of the question.

Bottom line: just enjoy the car. No need to justify anything.

Ricky SE3P 12-24-2018 03:13 PM


Originally Posted by UnknownJinX (Post 4877545)
This is a pretty old thread.

232 BHP(the generally agreed figure for RX-8) and 276 BHP(the highest output option for FD) are not close no matter how you slice it. This is especially considering RX-8's lack of low-end power.

And remember that FD had the "Gentlemen's Agreement" holding it back - it could have been more if that wasn't there. And an FD is a lot more tunable than the NA RX-8.

The main reason RX-8 is stock without a turbo is really easy: cost. The FD was priced very close to a Corvette from the same years. RX-8 was priced at 50%~60% of a Corvette from its time. With the lower price point, turbo is out of the question.

Bottom line: just enjoy the car. No need to justify anything.

The community called BS on Mazda with the HP claims, the proper numbers are 212 at the fly for 6 port and 192 at the fly for 4 port.

But yes, old thread.

UnknownJinX 12-24-2018 03:30 PM

I thought 212 BHP is for the 6-port when paired with the 6AT? The lower redline(7500 RPM) makes it lose some power.

6MT should be a bit more powerful.

Anyway, I think 9krpm posted a picture of his 8 on the dealer lot when he bought it. The window sticker said 250 BHP, LOL.

NotAPreppie 12-24-2018 08:46 PM

The BS claim was 250 for the 6-port 6MT. After being called on it, Mazda USA revised the number down to 238. Then the SAE revised the scale and it magically became 232 (with no actual change in output... just the rating system changed).

Steve Dallas 12-26-2018 08:17 AM

Skimming these old threads makes me chuckle. Excellent comedy, Gents!


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