2015 Z28 exhausts smell - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Z28000 · 03-30-2026, 02:42 AM

I love this car and everything about it but when I drive with my 7 year old that loves this car and everything about it hahah I’d like to figure out the way to keep exhaust smell out of it I feel like it’s coming in straight from trunk I know this track car and it came bare in some areas but any suggestions if how to seal or plug anything or would trunk insert or whatever it’s called would help

Just looking for suggestions I know it probably sounds ridicules

But thank you all in advance haha

larry_g · 03-30-2026, 06:13 AM

Have the cats been removed and have you checked the exhaust for leaks?

Sent from my Pixel 8 Pro using Tapatalk

1970judge · 03-30-2026, 07:25 PM

Its modded with a cam, meaning it was tuned. You'll probably want to start there.

Z28000 · 03-31-2026, 04:14 AM

No cats are still in place . I will check for exhausts leak. Thank you

void_kp · 04-03-2026, 06:51 PM

Quote:

Originally Posted by 1970judge

Its modded with a cam, meaning it was tuned. You'll probably want to start there.

this.

make sure the air/fuel mixture across all rpm and loads is correct. In other words, bring it to a GOOD tuner and have him/her to check and correct the map

FLOW TIE · 04-25-2026, 09:10 PM

My 12 year old Z doesn’t put out any nasty fumes. Bone stock.
I bet you’ve got a modded car. Maybe Cat delete ??

03-30-2026, 02:42 AM	#1
Z28000 Drives: 2015 Chevy Z28 Join Date: Dec 2022 Location: Washington Posts: 53 View My Garage	2015 Z28 exhausts smell I love this car and everything about it but when I drive with my 7 year old that loves this car and everything about it hahah I’d like to figure out the way to keep exhaust smell out of it I feel like it’s coming in straight from trunk I know this track car and it came bare in some areas but any suggestions if how to seal or plug anything or would trunk insert or whatever it’s called would help Just looking for suggestions I know it probably sounds ridicules But thank you all in advance haha __________________ 2015 Z28 #572 BLACK NO AC

03-30-2026, 06:13 AM	#2
larry_g Drives: 2014 1SS/1LE Join Date: Nov 2015 Location: Louisville, KY Posts: 898	Have the cats been removed and have you checked the exhaust for leaks? Sent from my Pixel 8 Pro using Tapatalk __________________ 830 WHP 700 WTQ, Whipple 2.9 @ 13lbs Boost, Flex Fuel Tune by Blevins Tuning, LSA SBE, 3.5 GripTec, ATI LS3 Damper, AFR 260cc Mongoose, ARP Studs, Yella Terra Ultralites, Johnson 2110R, BTR PDS Stage 3, Melling 10355, Improved Racing Baffle, ID1050X, DSX Triple Fuel Pump, RotoFab CAI, NW 103mm TB, Stainless Works 1-7/8" LTH to 3" Speed Eng w/ X-pipe to NPP, Powermaster 9509 XS, Detroit Speed Motor Mounts, MGW, Monster LT1-S, ZL1 Calipers, DBA Rotors & Pads, Bilstein B6 Struts & Shocks, BMR 1.25" Drop Springs & Adj Rear Bar, Pegasus Solid Bushings, Z/28 Wheels, other misc parts.

03-31-2026, 04:14 AM	#4
Z28000 Drives: 2015 Chevy Z28 Join Date: Dec 2022 Location: Washington Posts: 53 View My Garage	No cats are still in place . I will check for exhausts leak. Thank you __________________ 2015 Z28 #572 BLACK NO AC

03-30-2026, 07:25 PM	#3
1970judge Drives: 2015 Z/28, 2007 HHR Join Date: Jan 2014 Location: Republic of Texas Posts: 1,171	Its modded with a cam, meaning it was tuned. You'll probably want to start there.

04-25-2026, 09:10 PM	#6
FLOW TIE Drives: 2015 Z/28 #898 Join Date: Oct 2016 Location: DFW Posts: 455	My 12 year old Z doesn’t put out any nasty fumes. Bone stock. I bet you’ve got a modded car. Maybe Cat delete ??