Blown cars that have removed the cats, any boost drop? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

GMRULZ · 04-18-2012, 09:30 PM

I`ve read where a lot of people are worried about cats coming apart on boosted cars, I know a few mustang guys that have had this happen, could be the tune whatever, regardless of the reason do we know if there is a boost drop by removing the high flow cats to an offroad pipe?

HufferSS · 04-18-2012, 09:48 PM

None on mine.

GMRULZ · 04-18-2012, 09:58 PM

Quote:

Originally Posted by HufferSS

None on mine.

so boost stayed the same, thats cool, thought it might drop a little, but then again, our high flow cats are pretty free flowing these days.

usmcjlp · 04-19-2012, 12:11 AM

GMRulz,

I was wondering the same thing. I haven't had any issues with mine so far.

Detoxx03 · 04-19-2012, 12:39 AM

It may drop a pound but probably not even that. I had headers and catless midpipe installed and tuned on my vette recently and it only lost a pound of boost. I'm perfectly happy with that cause it just means its making the power more efficiently.

thebeast916 · 04-19-2012, 05:29 PM

I need to remove mine. I think it's the cause of my having too much boost(13lbs) on a 3.9 pulley

MANNYS2SS/RS · 04-20-2012, 01:05 PM

Mine dropped 1.5 pound

tkrupinski · 04-20-2012, 08:24 PM

Mine dropped one pound and gained 20RWHP.

lexlueger · 04-20-2012, 09:43 PM

Mine melted awhile back. No change in boost level though with straight pipes.

JANNETTYRACING · 04-21-2012, 07:18 AM

Quote:

Originally Posted by GMRULZ

I`ve read where a lot of people are worried about cats coming apart on boosted cars, I know a few mustang guys that have had this happen, could be the tune whatever, regardless of the reason do we know if there is a boost drop by removing the high flow cats to an offroad pipe?

Like it or Not Boost Drop is a Good Thing, it means your moving air through the engine more efficiently.

Ted.

GMRULZ · 04-21-2012, 12:25 PM

Quote:

Originally Posted by JANNETTYRACING

Like it or Not Boost Drop is a Good Thing, it means your moving air through the engine more efficiently.

Ted.

Oh, I know Ted, just seeing if I might need a smaller pulley....

Are you seeing a boost drop when removing the cats or your setups Ted?

GMRULZ · 04-21-2012, 12:25 PM

Quote:

Originally Posted by tkrupinski

Mine dropped one pound and gained 20RWHP.

Did you have high flow cats or factory cats? If aftermarket what brand?

usmcjlp · 04-21-2012, 10:01 PM

GMRULZ,

It seems like a lot of folks are getting spooled up over this like the gear issues. That turned out to be related a lot of times to improper install. I think this cat issue may be along the same line. How are ADM, Jannetty, and Lingenfelter holding up? A tune that's too rich will foul the cats over time won't it?

GMRULZ · 04-22-2012, 06:39 AM

Quote:

Originally Posted by usmcjlp

GMRULZ,

It seems like a lot of folks are getting spooled up over this like the gear issues. That turned out to be related a lot of times to improper install. I think this cat issue may be along the same line. How are ADM, Jannetty, and Lingenfelter holding up? A tune that's too rich will foul the cats over time won't it?

Yeah, if the cats are working over time they may go bad, I`m not really that worried about mine, of course an ounce of prevention might be a good thing, moreso I was deciding if I should remove them and drop a pulley size trying to calculate if there was any boost drop form the cat delete and if so how much. The other thread i have going is about 10lbs boost not meth no knock, I guess I could have merged them but they get more specific replies when seperate.

04-18-2012, 09:30 PM	#1
GMRULZ Drives: 2010 SS & 2008 C6 Join Date: Mar 2008 Location: VA Posts: 1,819	Blown cars that have removed the cats, any boost drop? I`ve read where a lot of people are worried about cats coming apart on boosted cars, I know a few mustang guys that have had this happen, could be the tune whatever, regardless of the reason do we know if there is a boost drop by removing the high flow cats to an offroad pipe? __________________ 2010 SS L99, 536rwhp 10.843@126.72. Whipple Supercharger stock pulley, ARH 1 7/8 longtubes w/ catted xpipe, magnaflow 3" mufflers, ADM Race CAI, 3:70 gears, lightweight wheels and nitto drag radials. Stock internal L99, stock converter. Bolt on best before blower 12.22@113.29 w/ nothing but ARH headers, catted x-pipe, ADM CAI and a tune on stock Pzero`s! Other car 2008 C6 Ls3, z51, A6, Npp Exhaust, best bonestock pass 11.80@118.82, Number 2 on the Corvette Forums Bonestock fastest list..

04-18-2012, 09:48 PM	#2
HufferSS I Wanna Go Faster!! Drives: 2011 2SS Synergy Green M6 Join Date: Apr 2011 Location: SC Posts: 3,323	None on mine. __________________ Built by Vengeance Racing 9.31@154.81 mph Procharger F1-X RPM Level 7 4L80e + Coan Converter Hendrix 9" Rear Axle + 3.50 Gear ARH 2" LTs+3.5" Exhaust Fore Fuel System, Bogarts + Hoosier Slicks Pfadt Drag Pack Suspension My Build Thread \| Best Pass To Date

04-19-2012, 12:39 AM	#5
Detoxx03 ЯєŧąяĐ Єl¡m¡иąŧøя ™ Drives: 2008 Corvette Join Date: Oct 2010 Location: Woodward Avenue Posts: 876 View My Garage	It may drop a pound but probably not even that. I had headers and catless midpipe installed and tuned on my vette recently and it only lost a pound of boost. I'm perfectly happy with that cause it just means its making the power more efficiently. __________________ D1SC Procharger 932/758 on E85 A Futral Motorsports Creation https://www.facebook.com/DetoxxAtomic

04-20-2012, 01:05 PM	#7
MANNYS2SS/RS Drives: 2010 Camaro 2SS/RS,LS3 Join Date: Oct 2010 Location: South Florida Posts: 1,237	Mine dropped 1.5 pound __________________ LS-3, ProCharger D1SC 665. rwhp /562. rwtq @ 9.3 psi

04-20-2012, 09:43 PM	#9
lexlueger Drives: V10 BMW M5, Supercharged 2SS/RS Join Date: Jun 2010 Location: Charlotte NC /Brooklyn NY Posts: 2,305	Mine melted awhile back. No change in boost level though with straight pipes. __________________ MAST 416 STROKER: STAGE 3 TVS 2300 CUSTOM CAM TPIS 102 TB IW 8 RIB PULLEY W/ OD COG REARS NX EXPRESS/NANO KIT KDI HEAT EXCHANGER/ROTOFAB RESERVOIR CIRCLE D 2800 TC/FLEX PLATE/ADM TRANS COOLER DSS DRIVESHAFT/1400 HP AXLES EATON TRUETRAC -LPE 3.27 GEARS DYNATECH HEADERS/MAGNAFLOW EXHAUST SQUASH RETURN STYLE FS ID 850's E85/ FLEXFUEL BMR/EIBACH SUSPENSION KILL MODE, ON.

04-19-2012, 12:11 AM	#4
usmcjlp Drives: 2SS/RS LS3 RJT Join Date: Jun 2009 Location: Northern Virginia Posts: 755	GMRulz, I was wondering the same thing. I haven't had any issues with mine so far.

04-19-2012, 05:29 PM	#6
thebeast916 Drives: Blown G8 GT Join Date: Apr 2010 Location: Orlando, FL Posts: 782	I need to remove mine. I think it's the cause of my having too much boost(13lbs) on a 3.9 pulley

04-20-2012, 08:24 PM	#8
tkrupinski Hugger Orange Drives: 2010 Hugger Orange 2SS/ RS YSI/4l80 Join Date: May 2010 Location: Marysville Ohio Posts: 535	Mine dropped one pound and gained 20RWHP.

04-21-2012, 10:01 PM	#13
usmcjlp Drives: 2SS/RS LS3 RJT Join Date: Jun 2009 Location: Northern Virginia Posts: 755	GMRULZ, It seems like a lot of folks are getting spooled up over this like the gear issues. That turned out to be related a lot of times to improper install. I think this cat issue may be along the same line. How are ADM, Jannetty, and Lingenfelter holding up? A tune that's too rich will foul the cats over time won't it?