Turbo on RX-8

[Herblenny]

Here is a dyno map of rew seq at 19lbs

[Herblenny]

Ok...

I looked at the Speedforceracing turbo again... Now look at this..



Hmm.. Can anyone else see the problem with this manifold?? Personally, I think its JUNK

[Phoenix7]

Originally Posted by Herblenny

Ok...

I looked at the Speedforceracing turbo again... Now look at this..



Hmm.. Can anyone else see the problem with this manifold?? Personally, I think its JUNK

so, can we chuck it into the huge garbage bin along with the supercharger for the NA FC?

I've been following your thread for a while and it looks pointless. RE-Amemiya did a turbo 8 and sells it as a Greddy kit (if it's even on sale) and they put out lame numbers on it and it still looked slow. Why would you want to turbo an 8 anyways?

[Herblenny]

And this statement makes so much sense..

A cold air intake is part of the package.We understand that it is important to get as much cold air into that turbo as possible.We located the airfilter in the front of the car so it gets as much cold air as possible. Details like this is what makes the Speed Force Racing turbo system superior to anything else being offered for the fourth generation RX-8.

Sounds like they are building a Honda Civic..

Why you ask?? Well, first of all, intake restriction is more important than temperature. I rather have zero 90 degree bends than try to suck in air from the front of the car...

Second, this is why you have IC

Third, this kit comes with pre programed map. I'm sure its tuned for conservative not peak HP (which I'll be scared to run or turn the boost above 9lbs). And second, 6 x 550s, top fed injectors.. well, I just don't quite trust running them 100% or close to that with this set up..

[djmtsu]

The runners out of the manifold look like ass (and different sizes) and they slam straight into the main runner. Looks like an awful design to me, and I am no expert.

[Herblenny]

Originally Posted by djmtsu

The runners out of the manifold look like ass (and different sizes) and they slam straight into the main runner. Looks like an awful design to me, and I am no expert.

Exactly!!

Lets look at the design again..


Just HORRIBLE manifold.. 5 turns before it hits the turbo (and how long it is before turbo) and GOD, those runners from the engine... GEEZ!! Its like its designed by some idiot who knows NOTHING about turbo... At least Mazsport's manifold looks reasonable..

Then the after turbo.. Another 5 turn before midpipe..

By the way, to put things in perspective... I just looked at what used 2004 rx8 trade in is and its now sub 10K... So, this turbo is 70% of what used 04 might be

[85rx-7gsl-se]

I would almost go LSx swap before turbo'ing the stock 8 engine.

[Phoenix7]

Originally Posted by 85rx-7gsl-se

I would almost go LSx swap before turbo'ing the stock 8 engine.

me-->
you-------^

[85rx-7gsl-se]

Me.....Gives no shat what u think

[Phoenix7]

we both know that's a lie but I do agree on modding the NA renesis. It's just like modding an NA. Take it as far as you can without wasting too much money on useless crap.

Intake, exhaust, fuel, timing and reliability mods.

[85rx-7gsl-se]

Renesis in stock form in a FB or FC would be pretty sweet, but in a FE, just needs more pep. But still, even the 13BT> Renesis from a tuning standpoint.

[BBullet8]

well regardless of what you all think I will turbo my car with that turbo.

[Phoenix7]

Originally Posted by BBullet8

well regardless of what you all think I will turbo my car with that turbo.

it's your money.

[Herblenny]

Originally Posted by BBullet8

well regardless of what you all think I will turbo my car with that turbo.

It is your money... But I'm trying to help you see why it will be waste of your money...

That manifold is JUNK!!! Go look at other turbo manifolds... Others have much better design!!

If I were to run the turbo on renesis (I will never do as I think its waste of money) I would get either greddy manifold or mazsport, get a nice small ball bearing turbo, and get that powermod ems or other piggy back that will let you datalog and tune yourself. The whole cold air intake BS with 2-3 90degree bend is BS. Just put a filter or screen on your turbo. IC is important when you get into high boost.. but you are not going to make more than 10lbs with out going into changing your fuel system.

I mean, if I were to go do all this, I would just put a REW with stock twins (99 280s)! Thats what Mazda should of done fromt he beginning. with 280 99 twins, you'll get great response with max turbo potential of about 380RWHP (16-18lbs) and could run it reliably.

[RCCAZ 1]

Guys,

MazdaManiac here in Phoenix has probably the best kit on the market for making power (Greddy Kit with upgraded turbo). He also is an expert on the Cobb Access port, which is quickly becoming the tool of choice for unlocking the potential of the stock Mazda EMS.