Hi having cold idle pulse issues has anyone had this before.

Cat has been removed so most prob this.

Could this be bad or just inconvenient?

Has the car been tuned?

I had a similar issue. The tuner adjusted the injector slope and it fixed the problem

Yes I have had it tuned, injectors, exhaust and cat removed

They also removed some timing from MBT spark

I have had this issue and got pretty bad to the point where my car feels like its camed, its been at the machanics all week last week and we couldnt find what the go is we are gonna try changing the ecu over on wendsday so hopefully it fixes it. We have found the the cylinders are doing all sort of sh*t like droping of from cylinder 2 to 3 to 5 and so on. And yes we have tryed all the things we thought it would of been e.g spark plugs, coils, injectors, head gasket etc.

I have heard of ecu's of stuffing up before so hope is that

Wow mines not so bad, the initial start is fine then after 5 or so secs it starts to pulse only cold, I believe it's either o2 sensor issue with no Cat or maybe injectors got it booked in sept so will keep all informed

It'll be a timing issue.

Datalog it. You'll see it.

if the cylinders are dropping out the car may think its overheating and it starts shutting down the cylinders randomly.

mayebe an ecu problem a faulty temp sensor should log a pcm emission light (engine light).

that's just my 2 cents.

Problem solved a re tune to adjust injector curve, also put cat back in, no prob at all now and re tune gave me 350kw