hi there, ive recently imported a 1995 wrx ra impreza, its a bit of a hand full, lots of stuff has been done on it, but ive noticed that it has quite a big missfire in 3rd gear, its niow doing it in 1st and 2nd gear under acceleration, so after reading a jap performance article bout project ra, ive heard there could be a chipin the ecu that might make the engine go bang, so tonite i took open the ecu, and there is 2 different chips in there, the first one has on it f52rc0202, and theres a big chip which goes over the top of them all and says flatoutfactory with code 74401a-s, is this that evil chip?,any help would be great, many thanks, lewis

 

https://www.scoobynet.com/general-te...ecu-found.html

This thread has a piccy of the chip you mentioned you could speak to Scott T (he has posted on the above thread) as he seems to know quite a bit about the early ecus or try Welcome to Type-RA.co.uk - Home of the Subaru Impreza WRX Type RA, Impreza WRX STi Type RA, Impreza Type RA V Limited, Scooby V. Ltd