Hi everyone,
I've had to start a new profile because i forgot my password & the email i used for my registration has now been closed...
Note: i have searched but nothing specific enough was found.
I recently (November 08) imported a 98' R33 GTR from Japan myself. Car is in perfect condition & usually runs perfect...usually. I'm not new to imports, ive had a TT supra, SR 180sx, 2x R33 Gts-t's etc over the last 6 years so i know the usual things to check.
So, like i said, the car runs great most of the time, but sometimes it just runs bad all of the sudden. It's like the car wont rev but the turbo's still spool & make boost (currently set to 14psi via EBC) the exhaust note also gets louder, sort of sounds like its is blocked off. When this happens i pretty much have NO power and the fuel smell in the cabin gets worse & car also back fires alot. the car does NOT misfire, this is not a coil/fuel pump/spark plug etc issue, all of that has been checked.
I then thought this could be an air flow meter problem until i checked them and noticed they were like new, i even opened them up to check the solder on the connectors and they were perfect.
Me and my mechanic have been over the car several times for vaccum leaks but there isn't any.
I know the car is running very very rich because it is getting between 250-300km from a tank so it does need to be dyno'd but i was just seeing if anyone on here has had any similar issues??
I just find it very strange because it is so variable.. it doesnt matter if its hot or cold or a long drive or short, it can just happen at any time but when it is running good its like a brand new car??
The car has had some significant mods in japan, most of which were removed including the full cage, turbo's but the cams remain (not sure what else has been changed internally) and the aftermarket ecu was removed and replaced with a stock item so i'm not sure if this is contributing to it.
Any help would be greatly appreciated.
Thank You.
James