Corvette LT1 engine mods and bolt-ons - Page 2

DallasMike · 01-24-2013, 01:53 PM

Quote:

Originally Posted by BSR-1

I'm sure that AFM can be turned off with a tune like they do on so many L99's.
I've never figured out why they turn it off though.
I mean if you can save gas and then go like a bat outa hell whenever you want to......what's the point of de-activating it?

Have you driven a car with AFM? Turned on you get 1-2mpg more. I'll sacrifice the 1-2mpg to get rid of the annoyance of cylinder deactivation. Especially if you're running any kind of exhaust system.

OctaneZ28 · 01-24-2013, 03:32 PM

Quote:

Originally Posted by Dallasmike

Have you driven a car with AFM? Turned on you get 1-2mpg more. I'll sacrifice the 1-2mpg to get rid of the annoyance of cylinder deactivation. Especially if you're running any kind of exhaust system.

x2!

AFM is not an enthusiast-friendly option.
Nobody wants their V8 to sound like a Honda.

Stingray · 01-24-2013, 05:08 PM

Quote:

Originally Posted by BSR-1

I'm sure that AFM can be turned off with a tune like they do on so many L99's.
I've never figured out why they turn it off though.
I mean if you can save gas and then go like a bat outa hell whenever you want to......what's the point of de-activating it?

You can't just simply turn off AFM on L99 Camaros... w/o an aftermarket tune and thus voiding your warranty.
We'll see on the new

Quote:

Originally Posted by Dallasmike

Have you driven a car with AFM? Turned on you get 1-2mpg more. I'll sacrifice the 1-2mpg to get rid of the annoyance of cylinder deactivation. Especially if you're running any kind of exhaust system.

Quote:

Originally Posted by Octane

x2!
AFM is not an enthusiast-friendly option.
Nobody wants their V8 to sound like a Honda.

Yes it does... sounds like a Honda/Toyota, etc.. on my stock (untuned) L99, I got rid of my Flowmaster AT due to that fact alone... annoyed me like a dingbat at 75-80mph.... like a severely out-of-tune tuba.

ssmike · 01-30-2013, 09:29 PM

I can only imagine what this engine would be like with LT's, high flow cats, cai, and a tune!

GaBoy25 · 01-30-2013, 09:34 PM

Quote:

Originally Posted by ssmike

I can only imagine what this engine would be like with LT's, high flow cats, cai, and a tune!

Strangely similar to a ls7?

Now imagine a bigger block with di and holy hell what a beast.

This entire line up is going to be sick.

Stingray · 01-30-2013, 10:02 PM

Quote:

Originally Posted by GaBoy25

Strangely similar to a ls7?

Now imagine a bigger block with di and holy hell what a beast.

This entire line up is going to be sick.

Wait 'til it goes into a Camaro (gen 6 perhaps?)... we'll be

again!

BSR-1 · 01-30-2013, 10:07 PM

Quote:

Originally Posted by Dallasmike

Have you driven a car with AFM? Turned on you get 1-2mpg more. I'll sacrifice the 1-2mpg to get rid of the annoyance of cylinder deactivation. Especially if you're running any kind of exhaust system.

Haven't driven one.
I hadn't thought of the "sound" drawback that others mentioned. I suppose that could be annoying.

imported_bolteon593 · 01-30-2013, 10:20 PM

could never understand why people mod cars that have warranties.

once the warranty is out, sure; go crazy... but why mess with it in the mean time when there are so many other options to build/customize cars.

each to their own and all that.

GaBoy25 · 01-30-2013, 10:20 PM

Quote:

Originally Posted by BSR-1

Haven't driven one.
I hadn't thought of the "sound" drawback that others mentioned. I suppose that could be annoying.

They addressed that issue with this particular car involving the exhaust tone while afm is active.

The standard exhaust improves airflow by 13 percent — GM says — and uses a pair of butterfly valves to adjust the sound when the cylinder deactivation system is in V4 mode.

ec1990 · 01-30-2013, 10:33 PM

Yep, it has two sets of butterfly valves, one to reduce drone, and one during high-revving which opens up all four exhaust outlets instead of just two.

ssmike · 01-31-2013, 09:40 PM

Quote:

Originally Posted by bolteon593

could never understand why people mod cars that have warranties.

once the warranty is out, sure; go crazy... but why mess with it in the mean time when there are so many other options to build/customize cars.

each to their own and all that.

That's what I thought when I bought my Camaro SS. It didn't take too long though before the mod bug overtook the fear of loosing my warranty! Just have to be prepared to pony up the cash if something breaks!

Quote:

Originally Posted by Dallasmike

Have you driven a car with AFM? Turned on you get 1-2mpg more. I'll sacrifice the 1-2mpg to get rid of the annoyance of cylinder deactivation. Especially if you're running any kind of exhaust system.

AFM and skip shift are the 2 most ANNOYING features of these cars! All in the name of making the EPA happy! What a bunch of crap!

Quote:

Originally Posted by Stingray

Wait 'til it goes into a Camaro (gen 6 perhaps?)... we'll be

again!

brother!

firecross91 · 02-02-2013, 09:46 AM

I wonder how SC the engine will be affected with the AFM or vice versa.

GaBoy25 · 02-02-2013, 10:39 AM

Quote:

Originally Posted by firecross91

I wonder how SC the engine will be affected with the AFM or vice versa.

Are you referring to a factory sc di engine with afm?

firecross91 · 02-02-2013, 10:57 AM

Either/or. Heard somewhere that the valves in the AFM may not be up to high compression.

02-02-2013, 09:46 AM	#26
firecross91 Drives: ZL1 #1691 Black on black. Join Date: Jun 2012 Location: WNY Posts: 522	I wonder how SC the engine will be affected with the AFM or vice versa. __________________ When 580HP ain't enough. JRE 75 RWHP No Tune kit: Featuring ATI, RotoFab, and Torco.

02-02-2013, 10:57 AM	#28
firecross91 Drives: ZL1 #1691 Black on black. Join Date: Jun 2012 Location: WNY Posts: 522	Either/or. Heard somewhere that the valves in the AFM may not be up to high compression. __________________ When 580HP ain't enough. JRE 75 RWHP No Tune kit: Featuring ATI, RotoFab, and Torco.

01-30-2013, 09:29 PM	#18
ssmike BL1ZZRD Drives: '16 Camaro 2SS, '20 Equinox Redline Join Date: Jul 2009 Location: Buffalo, NY Posts: 7,841	I can only imagine what this engine would be like with LT's, high flow cats, cai, and a tune!

01-30-2013, 10:20 PM	#22
imported_bolteon593 Join Date: Jan 2013 Posts: 26	could never understand why people mod cars that have warranties. once the warranty is out, sure; go crazy... but why mess with it in the mean time when there are so many other options to build/customize cars. each to their own and all that.

01-30-2013, 10:33 PM	#24
ec1990 Drives: 2012 AGM SS Join Date: Jun 2012 Location: Las Vegas Posts: 1,407	Yep, it has two sets of butterfly valves, one to reduce drone, and one during high-revving which opens up all four exhaust outlets instead of just two.