Gen 4 Camaro LS3 Whipple 2.9

[johncm]

2015 Camaro SS LS3 moderate cam, long tube headers, Whipple 2.9, id 850 injectors, no cats.
Was wondering does this tune look AOK, car seems to have a slight bucking between 1400- 1800 rpm. everything else feels perfect.
looking for some opinions.

[edcmat-l1]

Not at all a fan of removing cats from modern cars.

That being said, the VE is funky looking. No reason for it to have that dip in it unless you have some meth coming on or something similar.

If the VE is dialed in, why run it in "MAF only"?

Not a fan of open loop tuning.

You're not logging enough pids to really tell much. Between the trims not working and not having and narrowband sensor feedback, hard to tell anything. If I'm going by the wideband, it's either reading incorrectly or it's lean most everywhere.

[Alvin]

Honestly the tune doesn't look good at all. You are holding off PE and BE until 120kpa. This is not good.

Watch timing where you feel it bucking but I see so much wrong like VE and timing that should be fixed before judging the rest of the tune.

Unless this is an absolute crazy big cam it should get along ok with the stock o2 sensors.

[johncm]

This camshaft is a Vengeance Racing Kaotic Cam 235* of intake duration and 243* of exhaust duration, .621" of intake lift and .624" of exhaust lift (1.7 ratio), and 113* lobe separation angle with 3* of advance built in.
I had my car Dyno tuned Maf and another tuner Dyno tune it with i thought was Speed density. that's the tune i uploaded.
This is the other tune from another tuner. does this look better? still has the same bucking at same RPM.

[edcmat-l1]

You'll most likely always have that bucking in the same range regardless based on the cam specs.