[arpad_m]

...I'm afraid we might now have the Great 2021 Catch Can Debate thread on our hands . There's at least one for every year

[DaveC113]

Originally Posted by s346k

remove your throttle body and then tell us how catch cans are not necessary.

Nobody has been able to show the 6.2L loses power over time. That's what matters.

[DaveC113]

Originally Posted by arpad_m

...I'm afraid we might now have the Great 2021 Catch Can Debate thread on our hands . There's at least one for every year

Yup, I'll still post so people know they aren't necessary, with some exceptions such as supercharged cars used on track.

As I said, nobody has EVER posted proof that the deposits get to the point they cause a loss of power or cause ANY other issue.

[s346k]

Originally Posted by DaveC113

Nobody has been able to show the 6.2L loses power over time. That's what matters.

what matters is the overall health of the engine. do some reading on the effects of reversion and also low speed pre ignition.

education *can be very expensive.

[DaveC113]

Originally Posted by s346k

what matters is the overall health of the engine. do some reading on the effects of reversion and also low speed pre ignition.

education *can be very expensive.

Again, prove it's an issue. "Overall Health" doesn't mean ANYTHING btw, you need to be specific. The thought that GM engineers didn't account for LSPI in tuning the motor is ridiculous.

If you're custom tuning and trying to wring every last HP out then maybe run a CC. For a stock motor, if people are saying catch cans are necessary, prove it. You have nothing...

[JCunningham]

Originally Posted by DaveC113

Really? I'd be interested to see that recommendation.

call your dealer they will tell you. GM put out a tach bulletin about it.

[ST1LE]

Considering the OP's mention of dealer issues, and complete lack of evidence to the contrary, I would suggest you do not need a CC.

[puppykat33]

Dang DAVE you triggered bro

"if people are saying catch cans are necessary, prove it. You have nothing... "
Same goes to you. you say they are not necessary . You prove it.

[puppykat33]

and a walnut media blasting valve cleaning is a dealer offered service and is recommended at 100k i think i saw, but i dont care to go poor over the other catch can threads to find it

[DaveC113]

Originally Posted by puppykat33

Dang DAVE you triggered bro

"if people are saying catch cans are necessary, prove it. You have nothing... "
Same goes to you. you say they are not necessary . You prove it.

Not triggered, just asking for proof. I ask this because this is a topic that keeps repeating and nobody has ever been able to show proof, nobody has ever been able to say: "Look at this 6.2L LT1 and it's excessive deposits that cost X hp! In fact, it's the other way, pics of intakes show it's NOT an issue. GM engineers say it's NOT an issue. Yet the myth persists...

BTW, asking to prove a negative is not a thing, it goes the other way...

[Blackmonba6Gen]

I've took my car to 3 different dealerships across the state and none of them said anything about my catch can or rotofab CAI intake I had on it at the time.. They just replaced the oil and brake fluid without any questions asked.

[ST1LE]

Originally Posted by puppykat33

Dang DAVE you triggered bro

"if people are saying catch cans are necessary, prove it. You have nothing... "
Same goes to you. you say they are not necessary . You prove it.

Originally Posted by DaveC113

Not triggered, just asking for proof. I ask this because this is a topic that keeps repeating and nobody has ever been able to show proof, nobody has ever been able to say: "Look at this 6.2L LT1 and it's excessive deposits that cost X hp! In fact, it's the other way, pics of intakes show it's NOT an issue. GM engineers say it's NOT an issue. Yet the myth persists...

BTW, asking to prove a negative is not a thing, it goes the other way...

HAHAHAHAHAHA....I LOL'd when I read that. Asking someone to prove something doesnt exist HAHAHAHAHA.....oh man.....

[puppykat33]

Originally Posted by DaveC113

Not triggered, just asking for proof. I ask this because this is a topic that keeps repeating and nobody has ever been able to show proof, nobody has ever been able to say: "Look at this 6.2L LT1 and it's excessive deposits that cost X hp! In fact, it's the other way, pics of intakes show it's NOT an issue. GM engineers say it's NOT an issue. Yet the myth persists...

BTW, asking to prove a negative is not a thing, it goes the other way...

The guy at elite engineering has give lots of proof why they are beneficial to the life of your engine. from reducing valve deposits to reducing oil fuel dilution. Plenty of videos showing how much theses things catch and how much build up occurs . I dont have a can myself but there is plenty of proof.

If you are asking for exact numbers on HP reduction over given number of years then there is no way to give that exact data due to different driving styles , and a myriad of other factors.

And you say they are not necessary and i was asking you for your specific proof why they are not? Seen plenty of videos of oil puddles in LT4 superchargers

[ninetres]

FWIW, the recommended service schedule in my 2021 ZL1 owners manual mentions absolutely nothing about valve cleaning, at any mileage. Just checked after someone mentioned a walnut blast in here. Nope.