M35 Rough idle

[KiwiRS4T]

On 7/18/2016 at 9:38 PM, conan7772 said:

?/ Don't know mate, I didn't tune it.

Anyway it's not tune related, nor can any tuning fix it.

After fitting new plugs and the intake, which was a mistake, should have only done one then tested, car vibrates on idle and up to around 2500 rpm.

I noticed it instantly and exhaust is louder.

Thought maybe a bad coil.

I've seen a few vids on resonator removal on other cars with massive negative effects.

Strange exhaust tones and loss of power.

Can't find any evidence of improvement.

One article which was quite in depth mentioned intake resonators as crucial to that specific engine design.

Anyway, the engine was way smoother before, so I'm trying hard to restore that.

Apart from that it goes pretty hard, high rpm in low gear manual mode is insane.

If it aint the resonator then I'll try new plugs again, maybe go back to stock 6 spec standard.

If that doesn't fix it I might try drinking way more alcohol.

 

Why did  you change to 7s anyway>