L83 Chopacobra "need more chop"

[ctsv2011]

its not real choppy at all would like to get a steady chop if possible new to gen 5
tuner said thats all the chop that it will do as its not too big but i just thought with a 108 lsa it would chop really good even thought its only 214/228


would like it to idle like this
https://www.youtube.com/watch?v=CjE4EEwZUu0

[GHuggins]

Datalog?

That is a different gen truck from the looks of it and you can tell it's being forced - goes into a timing / O2 swing chop at the end. You can force crazy crap on the gen V's too, but sometimes it bites you for drivability.

[ctsv2011]

it chops decent in park or neutral but im forcing it

theres no chop if i put it in gear. i can see the timing stops swinging when i put it in gear, what does predicted tab do under idle>rpm>speed control. have not messed with this

[ctsv2011]

Datalog?

That is a different gen truck from the looks of it and you can tell it's being forced - goes into a timing / O2 swing chop at the end. You can force crazy crap on the gen V's too, but sometimes it bites you for drivability.

it is a 2014 silverado gen 5 l83

[GHuggins]

You still haven't dialed anything in? Predicted is throttle control. Immediate is timing control. Trucks start to ignition knock bad if you try to overly use timing control for higher rpm errors FWIW.

[Estep40511]

stock converter? those cams work better with a higher stall. you can get them to chop more if you like, and drives way better too. just my opinion

[Camaro6]

You have too much timing/throttle control for the "in gear" areas and converter needs to be loosened up in the tune. Idle will always chop more, but they can chop in gear stopped and when coming down from about 3mph to stop. Chop will go away once you start moving 3-5mph typically. Sounds like you're looking for the chop for pulling into the car meets barely rolling?

[STAGEUP]

If you're desperate, run in open loop and lean out the idle areas you want more chop from. Or you can do it the right way and get a higher stall converter.

[04silverado6.0]

That ho spark map and the e85 spark maps need to be gone over. Several other wacky things in there.

[portert]

its not real choppy at all would like to get a steady chop if possible new to gen 5
tuner said thats all the chop that it will do as its not too big but i just thought with a 108 lsa it would chop really good even thought its only 214/228


would like it to idle like this
https://www.youtube.com/watch?v=CjE4EEwZUu0

A camshaft is mechanically defined at the time it was ground( made). The lobe center or overlap between valve events will dictate the "chop" you're speaking of so it is what it is. Looks like a 106 degree from your information above. With a modest duration as you show here and a 106 overlap, it will chop Now if you go dumping a ton of fuel into the engine it'll chop more but that will be limited because you'll like wash the oil off the pistons and cylinders and seize the engine pretty quickly, the same is true if you're starving the engine for fuel. Make sure you have enough fuel pressure and injectors with enough flow to feed the beast. Check your spark advance. The cam should have some timing information with it. If a mechanic installed it for you, you might ask if he advanced or retarded the came timing on install and how much. I know which cam you're speaking of and the Chopacabra is indeed pretty lumpy at idle. There are several things that can effect that really. Valve springs, compression, timing, the AFR, and I'm no expert. Others here may have some more information for you.