Muffler delete loses lots of torque? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

chicagobulls · 06-10-2012, 11:25 PM

I feel like after doing my muffler delete i have lost lots of torque.

second gear feels like their is almost no pull almost like im driving a minivan.

i have a cel for the gas cap it looks like would that result in a limp mode?

i feel like my car is really slow lately and when i drove my brothers pretty much stock genesis coupe 2.0 it feels almost faster and pushes you into your seat like craaazy and the 0-60 on that car is like 6.4 seconds.

im very upset right now with my car performance. i feel like something is wrong.

could the muffler delete be putting the car computer in limp mode?

thanks guys

usnatclee · 06-10-2012, 11:38 PM

What size are those rims and how much do they weigh? Could be part of it if they are heavier than the stock steelies.

chicagobulls · 06-10-2012, 11:43 PM

they are 21s but i have had them before and this power loss came after the straight pipe i would say.

i might go to the dealer and just test drive some of the v6 camaros there to get an idea of how fast mine is.

do you think the cel or straight pipe has something to do with it?

should i maybe disconnect the battery? would that help?

thanks

THE1chopper · 06-10-2012, 11:47 PM

most LS engines need some back pressure... do you have your cats removed as well?

Edit: whoops you have a v6... not sure

chicagobulls · 06-10-2012, 11:50 PM

yeah cats are on....

ive heard alot that there is alot of torque lost when deleting mufflers.

honestly second gear feels like 3rd gear to me that is how much it sucks!

i feel like i couldnt beat a v6 minivan in second gear it almost has no go!

Lil' Nasty · 06-11-2012, 12:12 AM

I would disconnect the battery, and/or pull the fuses (yes I know the fuse pull is mainly or the v8) but something has to be wrong not to be a downer but losing about 45-50 pounds it's should be peppier. Keep us updated

chicagobulls · 06-11-2012, 12:17 AM

thanks man will try that tomorow.

I was expecting either a little more power or no difference between my american thunder flowmasters i had on and straight pipes.

maybe the computer in the car still thinks the car has the flowmaster at's and never relearned the straight pipes.

but i hear this computer relearns everything automatically.

hmmmmmm.

honestly the car feeeeels sooooooo slow in second though it used to be fun to pull in second but it feels like all the torque is gone!

Lil' Nasty · 06-11-2012, 12:51 AM

No problem

I think it's just relearning and may need some more time driving it, as very one knows our cars is basically a computer. Just like my MRT's had three basic sounds SUPER loud in the first 500 miles, toned down a little bit, now sounds amazing especially with the decel pop

if you search on here, I believe you might find other people muffler delete threads and can ask them if they shared this same problem

lscamaro · 06-11-2012, 02:02 AM

Disconnect the battery and give it 100 miles of easy driving. Then test it. The disconnecting the battery resets the ECU and makes the car re learn everything. Can't hurt to do it. Also, you stated you have a CEL. Where did that come from? That could be it?

chicagobulls · 06-11-2012, 10:14 AM

the cel is from a gas cap leak or something like that. supposedly autozone said its not a biggie. i dont think that would cause engine to go into limp mode though...

just disconnected the battery how long should i wait before connecting it back?

Lil' Nasty · 06-11-2012, 10:36 AM

5-10 min my cel goes away pretty quickly in that span

KMPrenger · 06-11-2012, 10:45 AM

We had another member run into a similar problem when they replaced the intake manifold. Said the car ran slow, but after clearing some past CELs, the car woke up.

Hopefully this will help you as well.

chicagobulls · 06-11-2012, 10:48 AM

Could i just get them cleared out by autozone?

or do you mean have the dealer fix the problem.

thanks for the tips.

jeffny09 · 06-11-2012, 10:54 AM

gas cap is not the problem...what is the code?if the light turns on for the gas cap..then its an evap line..could be that the gas cap is not good or not closed properly..but it will not cause ur car to go into limp mode..i did a muffler delete. and i feel no difference..i still had backpressure,,now with my tune i dont as much cuz of the cam i beleave.,but clearing the code wont help anything unless u fixed the problem/..please get us the code and we can try to help. if the gas cap was the problem and u tightend it it should go off after several starts,,i would def try the battery disconnect overnighjt

06-10-2012, 11:25 PM	#1
chicagobulls one car wolfpack Drives: 2010 Camaro V6 Join Date: Nov 2010 Location: Illinois Posts: 1,226	Muffler delete loses lots of torque? I feel like after doing my muffler delete i have lost lots of torque. second gear feels like their is almost no pull almost like im driving a minivan. i have a cel for the gas cap it looks like would that result in a limp mode? i feel like my car is really slow lately and when i drove my brothers pretty much stock genesis coupe 2.0 it feels almost faster and pushes you into your seat like craaazy and the 0-60 on that car is like 6.4 seconds. im very upset right now with my car performance. i feel like something is wrong. could the muffler delete be putting the car computer in limp mode? thanks guys

06-10-2012, 11:38 PM	#2
usnatclee Drives: '12 2SS/RS, '13 Vette, '13 Wrangler Join Date: May 2012 Location: wherever the Navy sends me Posts: 740	What size are those rims and how much do they weigh? Could be part of it if they are heavier than the stock steelies. __________________ 2012 Camaro Ashen Grey Metallic 2SS/RS "Timberwolf". Custom exhaust, RX oil catch can and oil breather, CAI inc intake, SLP 160* thermostat, TSP 2" LT headers w/ off road pipes, custom cam, tuned. 467rwhp 450rwtq. 2013 Corvette Torch Red LS3. 378rwhp/375rwtq SAE corrected, tuned. ROCK CHALK JAYHAWK GO KU!

06-11-2012, 12:12 AM	#6
Lil' Nasty [COTW 4/13/15] Drives: Supercharged LLT Join Date: Jul 2010 Location: Florida Posts: 5,957	I would disconnect the battery, and/or pull the fuses (yes I know the fuse pull is mainly or the v8) but something has to be wrong not to be a downer but losing about 45-50 pounds it's should be peppier. Keep us updated __________________ LiL' Nasty's Build Journal

06-11-2012, 12:51 AM	#8
Lil' Nasty [COTW 4/13/15] Drives: Supercharged LLT Join Date: Jul 2010 Location: Florida Posts: 5,957	No problem I think it's just relearning and may need some more time driving it, as very one knows our cars is basically a computer. Just like my MRT's had three basic sounds SUPER loud in the first 500 miles, toned down a little bit, now sounds amazing especially with the decel pop if you search on here, I believe you might find other people muffler delete threads and can ask them if they shared this same problem __________________ LiL' Nasty's Build Journal

06-11-2012, 02:02 AM	#9
lscamaro Drives: 2011 CGM Camaro LS A6 Join Date: Jan 2011 Location: San Antonio, Texas Posts: 10,305	Disconnect the battery and give it 100 miles of easy driving. Then test it. The disconnecting the battery resets the ECU and makes the car re learn everything. Can't hurt to do it. Also, you stated you have a CEL. Where did that come from? That could be it? __________________ Click Picture for Build Thread

06-10-2012, 11:43 PM	#3
chicagobulls one car wolfpack Drives: 2010 Camaro V6 Join Date: Nov 2010 Location: Illinois Posts: 1,226	they are 21s but i have had them before and this power loss came after the straight pipe i would say. i might go to the dealer and just test drive some of the v6 camaros there to get an idea of how fast mine is. do you think the cel or straight pipe has something to do with it? should i maybe disconnect the battery? would that help? thanks

06-10-2012, 11:47 PM	#4
THE1chopper Drives: 2010 Camaro 2SS Join Date: Apr 2012 Location: Beaumont Tx Posts: 25	most LS engines need some back pressure... do you have your cats removed as well? Edit: whoops you have a v6... not sure

06-10-2012, 11:50 PM	#5
chicagobulls one car wolfpack Drives: 2010 Camaro V6 Join Date: Nov 2010 Location: Illinois Posts: 1,226	yeah cats are on.... ive heard alot that there is alot of torque lost when deleting mufflers. honestly second gear feels like 3rd gear to me that is how much it sucks! i feel like i couldnt beat a v6 minivan in second gear it almost has no go!

06-11-2012, 12:17 AM	#7
chicagobulls one car wolfpack Drives: 2010 Camaro V6 Join Date: Nov 2010 Location: Illinois Posts: 1,226	thanks man will try that tomorow. I was expecting either a little more power or no difference between my american thunder flowmasters i had on and straight pipes. maybe the computer in the car still thinks the car has the flowmaster at's and never relearned the straight pipes. but i hear this computer relearns everything automatically. hmmmmmm. honestly the car feeeeels sooooooo slow in second though it used to be fun to pull in second but it feels like all the torque is gone!

06-11-2012, 10:14 AM	#10
chicagobulls one car wolfpack Drives: 2010 Camaro V6 Join Date: Nov 2010 Location: Illinois Posts: 1,226	the cel is from a gas cap leak or something like that. supposedly autozone said its not a biggie. i dont think that would cause engine to go into limp mode though... just disconnected the battery how long should i wait before connecting it back?

06-11-2012, 10:36 AM	#11
Lil' Nasty [COTW 4/13/15] Drives: Supercharged LLT Join Date: Jul 2010 Location: Florida Posts: 5,957	5-10 min my cel goes away pretty quickly in that span __________________ LiL' Nasty's Build Journal

06-11-2012, 10:45 AM	#12
KMPrenger Drives: 16 Camaro SS, 15 Colorado Join Date: May 2009 Location: Jefferson City, Missouri Posts: 13,943	We had another member run into a similar problem when they replaced the intake manifold. Said the car ran slow, but after clearing some past CELs, the car woke up. Hopefully this will help you as well. __________________ 2016 Camaro 1SS - 8-speed - NPP - Black bowties 2010 Camaro 1LT V6 (Sold. I will miss her!)

06-11-2012, 10:48 AM	#13
chicagobulls one car wolfpack Drives: 2010 Camaro V6 Join Date: Nov 2010 Location: Illinois Posts: 1,226	Could i just get them cleared out by autozone? or do you mean have the dealer fix the problem. thanks for the tips.

06-11-2012, 10:54 AM	#14
jeffny09 Drives: 2010 camaro Join Date: Nov 2008 Location: new york Posts: 5,618	gas cap is not the problem...what is the code?if the light turns on for the gas cap..then its an evap line..could be that the gas cap is not good or not closed properly..but it will not cause ur car to go into limp mode..i did a muffler delete. and i feel no difference..i still had backpressure,,now with my tune i dont as much cuz of the cam i beleave.,but clearing the code wont help anything unless u fixed the problem/..please get us the code and we can try to help. if the gas cap was the problem and u tightend it it should go off after several starts,,i would def try the battery disconnect overnighjt __________________ top 10 reason why real men drive stick. 10. A manual transmission is the ultimate in control 9. You can use automotive jargon and not sound like a total tool 8. You can't spell "manual" without "man" 7. Manual transmissions prove you can do more than one thing at a time 6. You can't drift in an auto 5. You can't pull fancy moves in an automatic 4. You get better fuel economy with a stick 3. You’ll never look like a chump if you can drive stick 2. Manual transmission cars are faster 1. Women like a guy who is good with his hands.