Whats a PRO VA Ecu ?
18 August 2003, 10:19 PM
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lifted the carpet,took off the ecu and its got PRO VA accross the front,looked inside and it says WRX PV2 on the eprom,any ideas what this chip does ?
Here's the translated answer,it all becomes clear
Super sport ECU pursued the sport potential of the turbo engine thoroughly with the long term test, tuning increased finely. The pole where difference which rode is recognized from the instantaneous it is low as for the sharp response and torque rise from the medium speed and preponderant power feeling in the high rotary limits, it is the item which cannot miss in order to enjoy the enjoyment of sport driving in the higher-order origin.
... to someone, but not me
[Edited by pblakeway - 8/18/2003 10:51:45 PM]
Here's the translated answer,it all becomes clear
Super sport ECU pursued the sport potential of the turbo engine thoroughly with the long term test, tuning increased finely. The pole where difference which rode is recognized from the instantaneous it is low as for the sharp response and torque rise from the medium speed and preponderant power feeling in the high rotary limits, it is the item which cannot miss in order to enjoy the enjoyment of sport driving in the higher-order origin.
... to someone, but not me
[Edited by pblakeway - 8/18/2003 10:51:45 PM]
19 August 2003, 12:19 AM
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I have one on my car MY94.
I have emailed ProVa themselves and got this answer.
Our ECU is best suited for Subaru EJ20 engine.
1) ignition timing map; advanced timing from 1700rpm. about 3 deg.
Best ignition timing brings more response and more torque.
( We adjusted ignition timing as 98 octane number petrol which is Japan premium petrol)
I know 96 octane number petrol in UK. It is better for you to use octane booster .
2) turbo boost map; standard setting is 1.08 bar at 4500rpm, 0.9 bar at 5200rpm over.
Our setting is 1.2 bar at 4500rpm, 1.0 bar at 5200 rpm over.
3) adaptability
ECU data can adapt to any exhaust type or intake system.
But we know the direct air intake system without air box from engine room is not good for high performance. The reason is breathe in hot air from engine room, and intake air fall into disorder by intake trumpet , air mass meter cannot measure collect
intake mass. It is need air chamber as same as standard air filter box.
Our test result: exhaust pipe diameter is 60mm at turbo outlet, 70mm os best for exhaust muffler pipe .
With best regards,
$B!!!!!!!!(B *******************************************
Matsumoto H.
PROVA INC.
1-14-21,Kitayamada, Tsuzuki-ku,Yokohama city
TEL ++81-45-591-5501 FAX ++81-45-591-5535
http://www.jprova.co.jp
*******************************************
Maybe diffrent on your model as it seems newer.
Looks like it runs a lot of ignition advance though
Scott
I have emailed ProVa themselves and got this answer.
Our ECU is best suited for Subaru EJ20 engine.
1) ignition timing map; advanced timing from 1700rpm. about 3 deg.
Best ignition timing brings more response and more torque.
( We adjusted ignition timing as 98 octane number petrol which is Japan premium petrol)
I know 96 octane number petrol in UK. It is better for you to use octane booster .
2) turbo boost map; standard setting is 1.08 bar at 4500rpm, 0.9 bar at 5200rpm over.
Our setting is 1.2 bar at 4500rpm, 1.0 bar at 5200 rpm over.
3) adaptability
ECU data can adapt to any exhaust type or intake system.
But we know the direct air intake system without air box from engine room is not good for high performance. The reason is breathe in hot air from engine room, and intake air fall into disorder by intake trumpet , air mass meter cannot measure collect
intake mass. It is need air chamber as same as standard air filter box.
Our test result: exhaust pipe diameter is 60mm at turbo outlet, 70mm os best for exhaust muffler pipe .
With best regards,
$B!!!!!!!!(B *******************************************
Matsumoto H.
PROVA INC.
1-14-21,Kitayamada, Tsuzuki-ku,Yokohama city
TEL ++81-45-591-5501 FAX ++81-45-591-5535
http://www.jprova.co.jp
*******************************************
Maybe diffrent on your model as it seems newer.
Looks like it runs a lot of ignition advance though
Scott
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