Raptor2k

Whao, and this is actually for sale. Interesting.

rkostolni

I imagine its gotta be difficult to size a turbo to work at maximum efficiency throughout such a wide rev range. On any engine, if you want it to spool fast and give lots of low end torque, you usually have to sacrafice some up top. If you want lots up top, then you have to sacrifice spool time and low end torque. With modern turbo's this effect can be greatly mitigated, but it will be somewhat magnified in a rotary since it has such a large cfm range.

So if you want it to hold power till 9krpms stick a bigger turbo on there, but realize your not going to spool up to full boost until 4,5,6... k rpms.

rx8wannahave

If you got this kit with the Inter-X you still would save $500...so why are we getting your EMS again?

No offense, thank you for working on this and making a product for the RX8!!!!

Also...did I miss it or did you explain why you messured this at 7.2K? I would think you could make more power at a higher RPM or is there a huge drop off or something?

Please explain...us newbs need to know.

SpeedForceRacing

If you got this kit with the Inter-X you still would save $500...so why are we getting your EMS again?


For starters.......you could have already had this kit a year ago if you bought a tuner kit.The big problem is everybody and there brother said this kit doesnt make power,we are lying about our claims,we dont know what we are doing,we are idiots,Greddy is the best,etc...........So now we make the power and all of a sudden,hey you can buy this kit and use interceptor X.Why didnt anybody do it sooner? Actually there were quite a few guys that did because they realized the potential of this system right away.Unfortunately, the majority of the masses thought it was impossible to do what we did and provide a real dyno chart.One of our customers seen similiar results with an Emanage but his Emanage is not working right so he is not gettng the smooth idle and drivability that we have.

If you do the math you wont be saving $500 because you still need to get injectors with the interceptor X because we dont provide injectors with the tuner kit.Then add in a boost control solenoid and I dont think you will save anything.On top of that the EMS we supply you is tuned for this application.Sure you might need a little fine tuning for your particular mods but you dont have to tune from scratch so you will save money on dyno time too.



No offense, thank you for working on this and making a product for the RX8!!!!

Also...did I miss it or did you explain why you messured this at 7.2K? I would think you could make more power at a higher RPM or is there a huge drop off or something?



Well you can see that the power starts to drop off at 7850.If I remember correctly at 8500 rpm it is below 290WHP so there is really no use revving it any higher because you are out of the powerband.It is not uncommon for most cars to make peak power before redline and this car is no different.I think some of it has to do with the butterfly system and the fact that this rotary is not as efficient at 9000 rpms.To summarize........if we are making really good power without revving the crap out of the motor, then it means there will be more reliability to the end user.The stress on the motor at 9000 and 10,000 rpms is much greater then at 8000 rpms.

Gambit

and less stress on the tranny

rx8wannahave

I see...my mistake, thanks.

SFR...OK, I understand now...thanks. (about the 7.2K thing).

Thanks for the hard work...at 9psi that's pretty dang impressive.

Red Devil

Nice results.

What is the larger turbo you guys are going with? I'm assuming that would be to continue climbing with power towards redline?

Does you EMS function like the Interceptor? Or does it manipulate the code like the Emanage? If it functions like the Interceptor, I'm curious how it doesn't trip the "too rich" CEL.

BigOLundh

iTrader: (1)

I'm pretty sure that is Wheel Horse Power.

Shifts (i believe) is referring to the number of ***** in your 1/4 mile - essentially this reflects gear ratios. I am pretty sure on our car it should be around 4 shifts

Gear is referring to weather or not its a 5 or 6 or 7 speed transmission.

If you want a definete answer, you can just call Rotary Performance and ask them for yourself. Their phone number should be up on the website.
-hS

Japan8

Unless you do like Porsche in the new 911 Turbo and use variable turbine geometry system to improve flexibility... http://www.roadandtrack.com/article....rticle_id=3253

EyeBall Fixer...(o)(x)

Thanks rkostolni for your helpful explaination, now I don't feel like such a
"rotary retard"
Al

drifter_d

very interesting. good job SFR.

dd sends...

rx8wannahave

Thanks! I re-did it and that calculator looks pretty dang accurate.

It "looks like" your setup on an 8 would get us into the mid 12's which is just amazing. I know I know, there are alot of factors (driver, grip, reaction time, weather , modded 8 weight, etc etc) but my goal of 300whp for the RX8 would honestly be more than enough for me.

Red Devil

Gearing - I don't think they are talking about how many your vehicle has - a 4 spd can have the same gear ratios as a 5spd or 6 spd...they are more likely referring to your final drive gear ratio...the RX-8 is 4.44.

MadDog

Unfortunately, there's a lot of history with SFR and the forum. Most of it is water under the bridge now. But, you're right. There are a lot of doubters here.

Low 13's is pretty easily attainable nowadays. While I haven't gotten a time slip yet, I'd be willing to bet I'm almost there. STi's are supposed to run mid to low 13's and I'm beating them - even though they are really tough to beat off the line with that AWD.

rx8wannahave

AMEN Charles, I agree 100%!

It's so cool how people doubted the RX8 and now it's making huge power gains and it's also lovely to see the aftermarket for the RX8 blossom into what we have today. No...not perfect and honestly still pricy for me but once my 8 is paid off I'm glad there will be several options to make the 8 faster and better overall.

mike1324a

I think there has been a turning point on this fourm. Ever since the interceptor has produced power gains it seemed to open the flood gates in the minds of the people on this forum. Power is possible and we now know that 300+ whp is much more attainable then we believed 6 months ago. Now the next obsicle is to make the general tuner population to realize what we are slowly realizing, meaning that the 8 is a fast car. I like the idea that we wont have to stay in the twisties to win anything. We now can have some grunt and as of this moment this is the most powerful kit we can buy.

mike1324a

How big is the piping on this kit?

crimson-rain

That won't be for a while for some of us. (Dang trade-in roll over)!!!

Congrats SFR. Now go to the track and scare people.

mike1324a

I second that!!!

Red Devil

To further hijack...Charles, how much does the OEM PPF weigh?

rx8wannahave

Charles...keep up the good work.

....and NOW...back...to yada yada yada

BaronVonBigmeat

Charles, do you have access to finite element analysis software, or would that even help? We have AlGor at work, and things are fairly slow for the moment.

SpeedForceRacing

Thanks Charles for your support.I feel your pain since we have been through it on these boards just like you.The piping for the RX-8 turbo system is 3" intake. 2" turbo to intercooler and 2.5" to 3" intercooler to throttlebody.

BaronVonBigmeat

Lemme guess, the "Machinery's Handbook"?

Yeah, it's probably the additional cost of aluminum, the additional cost of welding (or is there any welding, I don't know), etc. Mazda designs cars with a price point in mind just like everyone else, and if you've gotta carry more weight to save money, the bottom center of the car is probably the best place to do it.

If you have an autocad model of your 3 proposed designs, I could analyze them and you could see the weak spots like this, then change materials or design until you reduce the stress to an acceptable level.



We use algor for huge ball valves, but we've also done steel brackets. The president of the company has waterfront property and needed some special kind of brackets for his bulkhead. :P

Of course, if your designs need to remain classified, that's cool too.