Very slight rough idle 5BW?

[Todd]

After putting about 100 miles on my 2025 5BW, is a tiny bit of idle roughness normal? I notice it with my hand on the shifter at idle, can even see my hand shake a tiny amount. It’s not perceptible on the tach.

No check engine, no misfiring under any load.

It’s almost like a mild performance cam, but less pronounced.

 

[Ergoc5]

Yes that's an LT4 characteristic

 

[BlackwingSwanny23]

Welcome to LT4's! Enjoy your 2025!

 

[668LT4]

Don't worry about anything except staying below 4000 RPM for 1500 miles. Break it in properly and you will have no troubles.

 

[MookdocOE]

Yup, LT4 and DI it's pretty smooth considering it's 650/650+ @ like 3k It has just enough cam feel to not be overly obtrusive imo. I am not really down with the Ol' CHOP,CHOP stuff.

 

[Todd]

Awesome, thanks for putting my mind at ease.

 

[Sully]

Good ol' LT4