Low Rev Range Struggle

[Jeremy93]

Hey ya'll, recently line has been struggling from around 600 -2500 RPM, after that rev range, it pulls fine, I went down to a local performance shop and they say it might be the fuel regulator, I was wondering, has anyone else had this problem?

It's a series 1 R33 with only 86xxx on the odo.

Any feed back would be amazing.

cheers

[DVS JEZ]

Disconnect the 02 sensor located on the dump pipe of the turbo.

Try this and let us know

[Jeremy93]

Disconnect the 02 sensor located on the dump pipe of the turbo.

Try this and let us know

Tried this and it didn't work, I also forgot to mention that the fuel line from the regulator to the rail feels as though it's pulsating, is it worth replacing a few of the lines or removing them and checking for blockages?

[DVS JEZ]

Get an AFR test done on the dyno with a fuel flow gauge. May be a pump issue

[jeffworld2]

Or a decent vacum leak, if it wont idle but runs if you hold the accelerator down a bit you've probably popped a boost controller or bov etc hose

[Jeremy93]

It still idles fine but as soon as I touch the accelerator it starts to struggle up till said rpm. It's starting to annoy me now too

[jeffworld2]

swap afm for a minute with someone else and see what happens if you're still stuck on this