Cammed 2-step = dangerous? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

metrogdor22 · 03-22-2018, 02:50 PM

I have a 2013 2SS M6 that I'm getting a cam and off-road headers installed on. I know a 2-step will cause problems with cats, but with those gone, is there other danger?

My main concern is since the cam has more overlap, does that open the possibility of the after-fire traveling back into the intake? Does the extra pressure on the back of the exhaust valves from ignition in the exhaust cause any problems?

I guess my real question is, what danger does a 2-step pose to an N/A, cammed, catless car? I don't intend to use it much; just enough to ensure I don't get asked to babysit my 1 year old nephew.

LsxDoctor · 03-22-2018, 02:53 PM

Not sure if serious

metrogdor22 · 03-22-2018, 02:55 PM

Quote:

Originally Posted by LsxDoctor

Not sure if serious

I am.

LsxDoctor · 03-22-2018, 02:59 PM

"After fire" will not travel back into the intake. You'll be fine. Many people have ran a two step in cam only Lsx cars for years. Try doing a search.

metrogdor22 · 03-22-2018, 03:03 PM

Quote:

Originally Posted by LsxDoctor

"After fire" will not travel back into the intake. You'll be fine. Many people have ran a two step in cam only Lsx cars for years. Try doing a search.

I searched "2 step danger" and got to page 3 without finding anything related to 2-steps.

FYI: https://www.quora.com/What-is-the-di...kfire-in-a-car

SynergyGreenSS · 03-22-2018, 03:13 PM

My car is cammed with 2 step. No issues so far!

metrogdor22 · 03-22-2018, 03:17 PM

Quote:

Originally Posted by SynergyGreenSS

My car is cammed with 2 step. No issues so far!

Thanks! How about the cam? How many miles do you have with the cam and with the 2-step? Anything you dislike about either?

SynergyGreenSS · 03-23-2018, 12:04 AM

Quote:

Originally Posted by metrogdor22

Thanks! How about the cam? How many miles do you have with the cam and with the 2-step? Anything you dislike about either?

I only just put the 2 step on about 2 weeks ago, or about 200 miles ago, so not a ton of experience with it yet although I have absolutely no issues or complaints. I don’t think I know of anyone who has had any issues because of it

pyroguy · 03-23-2018, 07:11 AM

This may be an ignorant question, but what is a 2 step?

SynergyGreenSS · 03-23-2018, 07:42 AM

Quote:

Originally Posted by pyroguy

This may be an ignorant question, but what is a 2 step?

It’s a type of launch control that can be activated with a clutch or brake pedal or really however else you want. The limited can be set wherever you want, allowing for consistent launches every time

Badbubba · 03-23-2018, 09:12 AM

Quote:

Originally Posted by SynergyGreenSS

My car is cammed with 2 step. No issues so far!

What components did you use for your 2 step? CTAP? And?

Badbubba · 03-23-2018, 09:17 AM

What is the risk of wetting down the cylinder walls with unburnt fuel by using an ignition cut 2 step?

SynergyGreenSS · 03-23-2018, 09:24 AM

Quote:

Originally Posted by Badbubba

What components did you use for your 2 step? CTAP? And?

For now, mine is just set up to a toggle switch. It’s good for roll racing because I can set the limiter to like 4K where I’m making good power, flip the switch on, get up to the limiter, then flip it off and go. At some point I’ll wire it to my brake (I’m an auto, but I have a somewhat high stall) and I’ll set it to like 2k for dig racing but I won’t be doing any of that for a while.

SynergyGreenSS · 03-23-2018, 09:28 AM

I’m no professional, but shouldn’t dumping fuel into the cylinders without igniting it have something of a cooling effect? Or am I way off?

03-22-2018, 02:50 PM	#1
metrogdor22 Drives: 2013 2SS M6 Join Date: Mar 2018 Location: USA Posts: 76	Cammed 2-step = dangerous? I have a 2013 2SS M6 that I'm getting a cam and off-road headers installed on. I know a 2-step will cause problems with cats, but with those gone, is there other danger? My main concern is since the cam has more overlap, does that open the possibility of the after-fire traveling back into the intake? Does the extra pressure on the back of the exhaust valves from ignition in the exhaust cause any problems? I guess my real question is, what danger does a 2-step pose to an N/A, cammed, catless car? I don't intend to use it much; just enough to ensure I don't get asked to babysit my 1 year old nephew.

03-22-2018, 03:13 PM	#6
SynergyGreenSS Drives: 2011 2SS Join Date: Mar 2015 Location: Arlington, Texas Posts: 1,333	My car is cammed with 2 step. No issues so far! __________________ 2011 SS L99 LSA Supercharger, BTR Stage 3 PDS Cam, Yank 3200SS, Weapon X Stage 2 intake, LSA Heads, Flex Fuel, Ported throttle body, Speed Engineering Headers, NOWEEDS, ZL1 fuel pump, DSX AUX Pump, ID-1050X injectors, 3” pipe to NPP mufflers, 3.91 gears

03-23-2018, 07:11 AM	#9
pyroguy Started#gottalovethatblue Drives: ABM #831 Join Date: Apr 2013 Location: TN Posts: 6,918 View My Garage	This may be an ignorant question, but what is a 2 step? __________________ '10 Camaro 2SS/RS \| Aqua Blue #831 of 3,903 \| Silver Stripes Check out my build thread

03-23-2018, 09:17 AM	#12
Badbubba GrINned & JUICEd Drives: 15STI, 10Expy, 10 2SS/RS M6, 47KB1 Join Date: Nov 2009 Location: Pittsburgh, PA Posts: 1,247	What is the risk of wetting down the cylinder walls with unburnt fuel by using an ignition cut 2 step? __________________ GPI SS3 Cam & stuff,N.O. Plate(dedicated fuel tank,progressive,fuel hose upgrade,remote opener,heater,console switches),LNC2000,CTAP,ARH 1 7/8" LTs/gutted cats/X pipe/mufflers,Jet Hot coated LTs,GPI HPT Tune,CAI, Scoop,Rx Catch Can,Gates heater hose relocation, Remote clutch & auto brake res,Metco loop,Momentum Tunnel Brace,TSW Nurb 18",555 & 05,Pfadt trailing arms & toe rods,Autometer WB,Fesler Pillar Pod,LED strips (int),Lloyds floor & trunk mats,LED DRL/front turn & license plate,DRL harness,VLEDs tail lights,Plasticoat Bowties. Ord: Oct 5, 2009 Rec: Nov 19, 2009 13.17@112.6 stock

03-23-2018, 09:28 AM	#14
SynergyGreenSS Drives: 2011 2SS Join Date: Mar 2015 Location: Arlington, Texas Posts: 1,333	I’m no professional, but shouldn’t dumping fuel into the cylinders without igniting it have something of a cooling effect? Or am I way off? __________________ 2011 SS L99 LSA Supercharger, BTR Stage 3 PDS Cam, Yank 3200SS, Weapon X Stage 2 intake, LSA Heads, Flex Fuel, Ported throttle body, Speed Engineering Headers, NOWEEDS, ZL1 fuel pump, DSX AUX Pump, ID-1050X injectors, 3” pipe to NPP mufflers, 3.91 gears

03-22-2018, 02:53 PM	#2
LsxDoctor 15 Year LS1Tech Member Drives: 2010 ss 391ci LS3 Join Date: Apr 2017 Location: Albuquerque Posts: 252	Not sure if serious

03-22-2018, 02:59 PM	#4
LsxDoctor 15 Year LS1Tech Member Drives: 2010 ss 391ci LS3 Join Date: Apr 2017 Location: Albuquerque Posts: 252	"After fire" will not travel back into the intake. You'll be fine. Many people have ran a two step in cam only Lsx cars for years. Try doing a search.