Rb25 Issues

[Ihiryu]

Hey all,

A friend of mine purchased a S13 coupe with a RB25 in it. The previous got the car to run, but it was having a little bit of issues.

I installed a Freddy intake manifold with a Q45 TB, installed it and wired it. Fixed the alternator (wasn't charging).

All seems fine and dandy except it seems to choke out at 3K. With some searching it seemed to be a MAF issue, I wanted to verify, so I was going to check the ECU for codes, and lo and behold, no LED or Diagnostic Screw. How in the world am I suppose to check it?

The current MAF on the car is a Green Label E60. I have tried cleaning, and I have checked for boost leaks (using a boost leak detector).

The car has FMIC, downpipe, and of course the Freddy intake. Everything else is stock.

The previous owner did state he was using a Z32 TT fuel pump, though I haven't checked it. The car currently has an ARK MFD installed for RPM, and coolant. The coolant temp does change (it's wired to the one from the ECU), as it slowly warms up. When I sit at idle to rev it, it will rev to about 5K, and stop. However, when you're driving, it doesn't go past 3K. Unless you are easing on the throttle.

[Yellow4g63]

Could be leaking from the freddy intake manifold. Flange could be warped or thorttle body flange.