DMRH

Guys, the latest MOTOR magazine has hit the streets & there is great feature on the RX-8 turbo from Rotor Master.

Check it out , quite interesting..........

REgards

Hymee

iTrader: (1)

Thanks DMRH.

I'm glad there is a 24hr newsagent down the road to allow me go and impulse buy a magazine at sparrow fart!! :D

Cheers,
Hymee.

Hymee

iTrader: (1)

That was a gr8 read.

I'd like to draw peoples attention to the differences in dyno results. I am not saying what Joe has done is not good or anything sinister. I'd just like to point out some interesting differences.

According to the graphs (publised in the article by Motor, and published on the internet by myself):

Joe/Motor Mag baseline = MAX: 154 HP @ wheels (eyeballed)
My first "baseline" run = MAX: 177 HP @ wheels
Joe/Motor + turbo = MAX: 189 HP @ wheels
All my mods (published) = MAX: 194 HP @ wheels

The interesting difference is the difference in the standard power output measured on 2 different dynos.

As a tuning tool (which is what there purpose is), my mods have yeilded a 17HP gain (10%), compared to the turbo giving a 35HP gain (23%).

Now to confuse things - it confused me, as I studied the graph first... Note the text in the article quotes the before figure at 127kW (170HP), whereas the graph shows ~154HP. Since the figures in the text say the after was 141 kW, and that equals 189HP a per the graph, am I correct to assume the axis on the graph must be labelled incorrectly??

Based then on the text, the power went from 170HP to 189HP (+19HP), which is an 11% gain as quoted.

Let me re-itterate - I am not knocking this project. The big gains are the low to upper mid-range. That is very impressive, and counts a lot more than the peak. Remember - it is the area under the curve that counts.

I am however, questioning the accuracy of the labelling of the graph published by Motor.

Congratulations to Joe on a lovely install!

Cheers,
Hymee.

PS - the mag is also now out-of-date. Archie in his GTP tuned 20B ran a 6.99 @ 201 last night See here for details: https://www.rx8club.com/showthread.p...threadid=31221

takahashi

He said not to push the engine over 7500rpm... what the f@## would I install a Turbo but not to push hard.

They man handled the airbox -- cut and paste to make it work and use normal ECU, manifold and exhaust. Oh my.

Stage 2 is the real thing. I will never risk my engine that way. If I want mid range boost, I would have brought myself a V8 or XR6Turbo.

Stupid mod if you ask me -- do something, do it properly. See what you have in the Stage 2.

By the way, it is done in Japan with Greddy Turbo, ECU and cat back only. Work fine and they have done 6000km testing. That is the real mover for you babe.

Keep working RMaster!

takahashi

Since I have the scanner out... this is half a page of info.

The mod is very similar to the RMaster in terms of the turbine location. I guess everyone is the same.

The intake is modded. Not cut from the stock air box

The intercooler is smaller - not that it is not blocking the radiator behind. Just wonder if they have thought of the effect of intercooler blocking the radiator and no cold air going though ???

Exhaust is modded and a E-Manage Piggy back is used to fully tune the engine. This is why I said properly done.

Still need a lot of testing for reliability, heat problem etc. I won't be on my car for a LONG WHILE! :D

Taka

Hymee

iTrader: (1)

Taka,

Regards "Properly Done"?

Joe's has a TSI fuel/ignition controller on it, so it is "properly done", yeah?

Cheers,
Hymee.

rpm_pwr

Hymee, that "dyno graph" was knocked up in MS Paint by the looks of it. MOTOR have done this before, it's more of an artistic thing than anything factual.

takahashi

So why does he specify the difference between stage 1 and 2 being ECU, intake and exhaust? I must have misread the article.

They still said not to push to 9000k which is disappointing.
Anyway~

Hymee

iTrader: (1)

Taka,

On my first read of the article, I also missed the bit about the TSI controller. The numbered pictures showing all the components at the end of the feature, and the legend, don't make any mention of it. I got the impression it was done without any change (but I was wrong). On second read I saw the reference to the TSI unit, which is what is in my car at the moment (although I have it disconnected as we haven't re-tuned it to suit "G").

Cheers,
Hymee.

daz1300

Hymee,

Mate, the sound of "mail to the editors" to motor mag to be published sounds like a good idea :D

Daryl

DMRH

A very keen eye indeed. I suspect you are correct as the MOTOR mag writer wasn't able to get the dyno print outs in time for deadline.

Joe from Rotor Master would be happy to mail out copies of the actual dyno graphs for any that wanted proof. He is a professional & is there to help.......:p

Hymee

iTrader: (1)

Thank DMRH,

Good idea. I tried to make it obvious in my post that I wasn't questioning Joe, and I though the problem was with Motor.

Cheers,
Hymee.