viros

Hi, i heard the perfect exhaust sound but i dont what the word is best to descrip it,
here is the videos
and this
what best word to descripe the sound

is not chop, right?

He are using customed by stock48 as i understand the specs are 224/224 111lsa based on triple12 cam, cant find the lift any where, you can find him in this blog by the name Jetn3
the exhaust used 4" downpipe from turbo with 4" corsa diesel muffler, thr engine is lm7 as i read.


Appreciate any help

smokinlmm

That’s chop, it’s from overlap. Not the best choice for boost.

viros

Why wouldn't be good for boost, and how can i achive this tone

smokinlmm

It’s dependent on the exact setup, headers, type and length, diameter of pipe, how it’s routed, h pipe or x pipe or none, resonators or high flow cats, muffler type and exhaust exit. There are many variables you would need to take a close look at the truck and ask questions. Choppy cams bleed off boost so they diminish performance with boost.

viros

does the header effect the sound even with turbo?. thanks for the info

smokinlmm

Its minimized by the turbo, but the turbo exhaust housing size, turbine exducer and down pipe size have a dramatic effect.

infiniticrypto

I certainly think the word "chop" has it's place when describing camshaft idle in many situations. With that said I'd prefer to use the older term "lope" here.