wcs

iTrader: (2)

Weird,
Sooooo ummm ya, and yet the SSV is still stock right?

I would like to see dyno's with a the configurations.
APV locked open vs. stock


I bet that would be an interesting torque curve.
Especially as the SSV is basically functioning on Load values.

olddragger

iTrader: (3)

get the apv to working and just change the opening rpm.
on track i have heard of those that tie the ssv open. On the street use all the intake valves except the vdi. That is not needed and can actually hurt your power.

Brettus

iTrader: (2)

It will reduce your low rpm torque considerably to leave the APV stuck open .

RotaryMachineRx

iTrader: (1)

Please Elaborate? I havent touched any of my intake valves, just running whatever Jeff sets them to.

Turblown

https://www.facebook.com/photo.php?f...type=3&theater

olddragger

iTrader: (3)

if Jeff tuned your car then the vdi is probably not being used.
I went a step furter and took all the vdi stuff off my lim and jb weilded shut the little valve within the lim. Taking all that stuff off helped to clean up that area a little.
The VDI in therory is suppose to help during the higher rpms--turns out it really doesnt--especially with boosted cars. Boost dones change things within an intake manifold.

RotaryMachineRx

iTrader: (1)

^ alright cool good to know, thanks OD... when I was N/A I actually had low MAF readings and tested the rest of my valves except the VDI (which I blamed for the low readings) turns out no big deal anyway

Brettus

iTrader: (2)

Just updated the 4port AT chart with Tofu's result - check it out .
Definitely the quickest 4 port to date .

Tofu - please post your dyno along with all the specs
Cheers

tofu_box

Hey Brettus

Thanks for taking the time to update the spreadsheet.

Specification:

Engine build by Xtreme Rotary (GURU Motorsport)

Intake and Exhaust mild ported.
Replaced auto center plate with manual center plate for larger exhaust port.
Manual stationary Gears,
Doweled, Balanced, Lapsed housing.
RX5 3mm Steel Apex Seals, Mazda Racing side seals.
Isotropic finished crank, plates surfaced.

Original Knightsport Kit, pretty much fully changed.

C30-94 Rotrex Supercharger, Centrifugal.
Custom Intake (cut up AEM)
Water to Air Intercooler, V Mount configuration.
Smaller Supercharger Pulley for earlier and more boost.
Xtreme Rotary/ RX8 Specialties Extractors
Custom Hi Flow Cat 200 cel
BHR Mid Pipe
Borla Exhaust
OEM Coils
SOHN Adapter
RE-Am Battery Relocation Kit
Custom full tray engine bay

Tuning done by Adaptronics and Pro Tuner

Brettus

iTrader: (2)

Removed Turblown dyno because ........

bse50

i'm curious Brett...

Brettus

iTrader: (2)

The dyno was a promotional one of dubious reliability. I really struggled to believe it from day one but admit to getting carried away with the excitement of it at the time.

*Dynos of that car before and after the 400+ dyno were both closer to 300whp at 10psi.

* 400 whp + at only 10 psi on a stock block Renesis is a wet dream no matter how you look at it . Especially when you consider that Mazdatrix dynoed similarly at 14 psi with a peripheral port hybrid and Esmeril took 16psi to make the same power.

nuke0907

iTrader: (2)

So is the highest 4 port AT still 260HP?

9krpmrx8

iTrader: (46)

As far as I know.

nuke0907

iTrader: (2)

I've been away so long i'm surpised nobody has hit higher numbers. I wonder if they just haven't posted anything yet.

9krpmrx8

iTrader: (46)

Well, no one really boosts an auto. Plus even 6 ports aren't making but maybe 30-40WHp more at best. Some 6 ports have made a bit more but only lasted about 5 minutes.

Brettus

iTrader: (2)

The 4 port plus AT combination is really a big barrier to making hp . Seeing what tofu and Phil have had to go through to get those numbers .... it's hardly surprising .

I do think a turbo could do better with the right tuning/turbo but you also have the AT to battle with once you get up there so ..................

Phil's 8

iTrader: (3)

Their are a few of us that have done it.....I know now that Kane has tuned it that it is doing better that 260hp but have not wanted to do a dyno. Actually even with it having been a battle, I am happy with the results. Yes the fact that it is a automatic does have some drawbacks but I would do it again.......

9krpmrx8

iTrader: (46)

You are a rarity my friend, I just meant that very few people with autos make that leap because the 4 port Auto is just not that popular for FI guys. I would be curious to see what a 6 Port/6 speed Auto would do on 10PSI.

tofu_box

right on phil! I enjoyed the battle too.

But all in all, if i had to do it all again, i would have purchased the 6 port auto.

Phil's 8

iTrader: (3)

Unfortunatly the 6port AT was unavailable in 03 when I purchased the car or I would also have gone that way......................but I have what I have and am happy with it.

Byrger

Hi all

Sorry for my english.

I have a Greddy downpipe turbo.
I want to put the turbine but do not know what fits.
I know that works well GT3071r

I can buy Garrett turbochanger for rb26dett twin turbo ( garrett GT25)
They fit me and that generally fit?

05rx8mazda

iTrader: (4)

Here is my dyno

firecran

iTrader: (3)

Congrats but 9psi @ 5100rpms? Seems laggy??

.

05rx8mazda

iTrader: (4)

GTX35R no bc connected, running off wastegate spring 9.25.