370hp roaring @ Bologna Motorshow...
370hp roaring @ Bologna Motorshow...
Thread Starter
101% Italian
Joined: Apr 2004
Posts: 121
Likes: 0
From: Italy
We used a "roots type" supercharger called VOLUMEX. It has been created for the old grp.B FIA rally cars but modified by us. We fitted also an air/air intercooler, remapped the Ecu and changed the exhaust system. The engine is strictly derived from that used in the "RX8 Sport Cup".
It sounds like an UFO and flames from the rear exhaust even with usual european 98Ron fuel.
About a street application....who knows?
It sounds like an UFO and flames from the rear exhaust even with usual european 98Ron fuel.
About a street application....who knows?
Registered
Joined: Feb 2004
Posts: 2,390
Likes: 0
From: Lewisville, TX
Originally Posted by hfalex
We used a "roots type" supercharger called VOLUMEX. It has been created for the old grp.B FIA rally cars but modified by us. We fitted also an air/air intercooler, remapped the Ecu and changed the exhaust system. The engine is strictly derived from that used in the "RX8 Sport Cup".
It sounds like an UFO and flames from the rear exhaust even with usual european 98Ron fuel.
About a street application....who knows?
It sounds like an UFO and flames from the rear exhaust even with usual european 98Ron fuel.
About a street application....who knows?
Can you go into more detail on how you did that?
Thread Starter
101% Italian
Joined: Apr 2004
Posts: 121
Likes: 0
From: Italy
Yes.
First we have to disconnect the main chip (CPU) from the board, closa e "jumper", then we have to reprogram it. We modify the mapping LUT with a freeware sw that can be also downloaded from my website. The only problem has been the checksums, but a Milan based company fixed thi problem. Thats it.
About tha MAF sensor, i read a lot of people think it is the mai problem, but i don't understand why since we had no problem to manage absolute pressures up to 2 bar just only with a few little changes.
First we have to disconnect the main chip (CPU) from the board, closa e "jumper", then we have to reprogram it. We modify the mapping LUT with a freeware sw that can be also downloaded from my website. The only problem has been the checksums, but a Milan based company fixed thi problem. Thats it.
About tha MAF sensor, i read a lot of people think it is the mai problem, but i don't understand why since we had no problem to manage absolute pressures up to 2 bar just only with a few little changes.
Thread Starter
101% Italian
Joined: Apr 2004
Posts: 121
Likes: 0
From: Italy
Will do a lot of new tests and Km on the European circuits since Feb. '05 with the MY'05....who would like to see, have a look or also test the cars has only to contact Astra. If you prefer you can come here at Astra to have a direct look...we'll be pleased.
Registered User
Joined: Feb 2003
Posts: 1,080
Likes: 0
From: South Florida
This sounds like the method used in the old FD remapped ECUs...there was a custom daughterboard needed to plug into a socket where the original microcontroller was, and the controller would in turn plug into the socket. This was necessary because the stock ECU used the on-board ROM of the microcontroller for some of the maps that needed to be changed. I'm a little surprised something like this will work on an ECU like the RX-8 though...its an order of magnitude more complicated than the FD.
jds
jds
Originally Posted by hfalex
Yes.
First we have to disconnect the main chip (CPU) from the board, closa e "jumper", then we have to reprogram it. We modify the mapping LUT with a freeware sw that can be also downloaded from my website. The only problem has been the checksums, but a Milan based company fixed thi problem. Thats it.
About tha MAF sensor, i read a lot of people think it is the mai problem, but i don't understand why since we had no problem to manage absolute pressures up to 2 bar just only with a few little changes.
First we have to disconnect the main chip (CPU) from the board, closa e "jumper", then we have to reprogram it. We modify the mapping LUT with a freeware sw that can be also downloaded from my website. The only problem has been the checksums, but a Milan based company fixed thi problem. Thats it.
About tha MAF sensor, i read a lot of people think it is the mai problem, but i don't understand why since we had no problem to manage absolute pressures up to 2 bar just only with a few little changes.
Int'l Man of Mystery
Joined: Jan 2004
Posts: 3,651
Likes: 0
From: Central Florida
I don't see why... the CPU in your PC is pretty complex, but doing something similar can allow you to overclock it (although usually it requires advanced cooling measures). Or how about chipping your X-Box so you can override the ROM and run a custom OS... or how about chipping PS? Sounds like it's relatively simple and pretty common...
Thread Starter
101% Italian
Joined: Apr 2004
Posts: 121
Likes: 0
From: Italy
Since the beginning oy the year we did this job only on 3 street cars.
The next one is this:
This is the show car used by the winner of the championship who is also the owner of the bigger tuning company in Italy.
This is his (our) race car:
RX8 is not a so common car here in Europe and we have been so busy in developing the racing version we had no time to tune also more street cars (which is not also oyr main business).
But I think in 2005 we'll put our racing 8s experience in some more "street version" spare.
By the way all the "racing" spares are already there for sale, if you love to drive a street car with a 180/150k spring and without the rollcage which strengthen the chassis of the 174% (tested on the bench, torsinal forces EC95 stds).
We took about 1 week with an 8s engine on the dyno to get the best mapping at the beginning of the year, playing with the "opened" ecu and mappings.
Tomorrow we'll be still there on th dyno to play with the my'05 engine and new mappings to get some hp more.
We never run a street car engine as it is with the opened Ecu. All the street cars we did had the racing engine, intake and exhaust fitted.
The next one is this:
This is the show car used by the winner of the championship who is also the owner of the bigger tuning company in Italy.
This is his (our) race car:
RX8 is not a so common car here in Europe and we have been so busy in developing the racing version we had no time to tune also more street cars (which is not also oyr main business).
But I think in 2005 we'll put our racing 8s experience in some more "street version" spare.
By the way all the "racing" spares are already there for sale, if you love to drive a street car with a 180/150k spring and without the rollcage which strengthen the chassis of the 174% (tested on the bench, torsinal forces EC95 stds).
We took about 1 week with an 8s engine on the dyno to get the best mapping at the beginning of the year, playing with the "opened" ecu and mappings.
Tomorrow we'll be still there on th dyno to play with the my'05 engine and new mappings to get some hp more.
We never run a street car engine as it is with the opened Ecu. All the street cars we did had the racing engine, intake and exhaust fitted.
05 Champ Car Test Driver
Joined: Jul 2004
Posts: 385
Likes: 0
From: Calgary, AB - Canada
Giampiero?
Is the driver Giampiero Simoni?
Ci vediamo dopo, grazie per l' informazione.
L.Schiavo (from Salerno)
Ci vediamo dopo, grazie per l' informazione.
L.Schiavo (from Salerno)
Originally Posted by hfalex
Since the beginning oy the year we did this job only on 3 street cars.
The next one is this:
This is the show car used by the winner of the championship who is also the owner of the bigger tuning company in Italy.
This is his (our) race car:
RX8 is not a so common car here in Europe and we have been so busy in developing the racing version we had no time to tune also more street cars (which is not also oyr main business).
But I think in 2005 we'll put our racing 8s experience in some more "street version" spare.
By the way all the "racing" spares are already there for sale, if you love to drive a street car with a 180/150k spring and without the rollcage which strengthen the chassis of the 174% (tested on the bench, torsinal forces EC95 stds).
We took about 1 week with an 8s engine on the dyno to get the best mapping at the beginning of the year, playing with the "opened" ecu and mappings.
Tomorrow we'll be still there on th dyno to play with the my'05 engine and new mappings to get some hp more.
We never run a street car engine as it is with the opened Ecu. All the street cars we did had the racing engine, intake and exhaust fitted.
The next one is this:
This is the show car used by the winner of the championship who is also the owner of the bigger tuning company in Italy.
This is his (our) race car:
RX8 is not a so common car here in Europe and we have been so busy in developing the racing version we had no time to tune also more street cars (which is not also oyr main business).
But I think in 2005 we'll put our racing 8s experience in some more "street version" spare.
By the way all the "racing" spares are already there for sale, if you love to drive a street car with a 180/150k spring and without the rollcage which strengthen the chassis of the 174% (tested on the bench, torsinal forces EC95 stds).
We took about 1 week with an 8s engine on the dyno to get the best mapping at the beginning of the year, playing with the "opened" ecu and mappings.
Tomorrow we'll be still there on th dyno to play with the my'05 engine and new mappings to get some hp more.
We never run a street car engine as it is with the opened Ecu. All the street cars we did had the racing engine, intake and exhaust fitted.
