Early Detonation? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

union894 · 07-08-2014, 01:17 PM

I had a comp cam installed 2 months ago by Matt at Florida Speed and Power. The car feels amazing I have only put about 500 miles on since the install, every once in a while when I take off from a stop i hear a pop sound, that sounds like it's coming from the CAI. It sounds like a backfire under the hood, if that makes sense, before I go making a phone call and a 3 hour drive. I thought I would ask if this is a problem or is it a normal once in a while event. My engine is an LS3 with a K&N typhoon CAI and LTH with high flow cats. Any help on this would be greatly appreciated! Thanks! Also it never does it at idle.

thahemp · 07-08-2014, 01:23 PM

Does it only do it when you accelerate aggressively with traction control on?

union894 · 07-08-2014, 01:26 PM

No, it's when I take off at normal acceleration, doesn't happen often.

BplumCrazy-SS · 07-08-2014, 02:38 PM

can you get a video of it

thahemp · 07-08-2014, 02:44 PM

Well.. it's definitely not normal. My first thought was traction control jacking with you in places you hadn't experienced before. Any other info you can provide?

union894 · 07-08-2014, 03:09 PM

When it does it, it bucks or hesitates, then it's fine.

Camaro Dude · 07-08-2014, 03:14 PM

A vacuum gauge would certainly help out trouble shooting this.

Does your tach needle move erratically when it exhibits this symptom?

Last but certainly not least, check your spark plugs for tightness and ditto on the plug boots. This IMHO would be best case scenario if it's spark related, but doubtful..check though.

I doubt it's the latter, sounds like a lean condition back firing through the intake, wish a vacuum gauge was up and running.

thahemp · 07-08-2014, 03:16 PM

I always thought mine only did it when I was accelerating hard, but who knows... I run with TC off all the time just to avoid it. You might try driving around without TC and see if it still does it. If you can log it that would be great. Otherwise... give Matt a call. He sure wouldn't want your car acting up like it is.

union894 · 07-08-2014, 03:18 PM

It'll be hard to get a video or sound as it's only done it 2-3 times and I can't predict when it will happen. I think I'll give Matt from FSP a call, doesn't sound like this is something that happens normally. I only use 93 fuel from Shell or Sunoco.

union894 · 07-08-2014, 03:20 PM

Quote:

Originally Posted by Camaro Dude

A vacuum gauge would certainly help out trouble shooting this.

Does your tach needle move erratically when it exhibits this symptom?

Last but certainly not least, check your spark plugs for tightness and ditto on the plug boots. This IMHO would be best case scenario if it's spark related, but doubtful..check though.

I doubt it's the latter, sounds like a lean condition back firing through the intake, wish a vacuum gauge was up and running.

I will check that out with the plugs and caps. Thanks for the info!

union894 · 07-08-2014, 03:32 PM

All the plugs and caps are good.

thahemp · 07-08-2014, 03:38 PM

Quote:

Originally Posted by union894

It'll be hard to get a video or sound as it's only done it 2-3 times and I can't predict when it will happen. I think I'll give Matt from FSP a call, doesn't sound like this is something that happens normally. I only use 93 fuel from Shell or Sunoco.

Probably the best plan. If he built the car, then he is most likely to know what's up.

union894 · 07-08-2014, 03:43 PM

Yeah that's what I figured, thanks for the help!

Fred 6528 · 07-08-2014, 03:50 PM

Does it pop when you try to take off real easy not giving it a lot of throttle

07-08-2014, 01:17 PM	#1
union894 Drives: 2016 Camaro 2ss 8A Join Date: Aug 2011 Location: USA Posts: 394 View My Garage	Early Detonation? I had a comp cam installed 2 months ago by Matt at Florida Speed and Power. The car feels amazing I have only put about 500 miles on since the install, every once in a while when I take off from a stop i hear a pop sound, that sounds like it's coming from the CAI. It sounds like a backfire under the hood, if that makes sense, before I go making a phone call and a 3 hour drive. I thought I would ask if this is a problem or is it a normal once in a while event. My engine is an LS3 with a K&N typhoon CAI and LTH with high flow cats. Any help on this would be greatly appreciated! Thanks! Also it never does it at idle.

07-08-2014, 01:23 PM	#2
thahemp Geek Drives: 2012 Black LS3 Join Date: Jan 2012 Location: Derby, KS Posts: 4,343 View My Garage	Does it only do it when you accelerate aggressively with traction control on? __________________ 01000111011011110110111101100100001000000110110001 11010101100011011010110010000001110111011010010111 01000110100000100000011101000110100001101001011100 110010000001101111011011100110010100100001 x = ac97968bd3df8f968c8cd3df998a9c94d3df9c8a918bd3df9c 909c94df8c8a9c949a8dd3df92908b979a8ddf998a9c949a8d d3df8b968b8cd1 x = ~x

07-08-2014, 02:38 PM	#4
BplumCrazy-SS Drives: 416 w/TH400 Join Date: Mar 2012 Location: Houston Posts: 697	can you get a video of it __________________ ERL 416 - 12.5 cr, TH400, Custom VVT Cam, PRC 255 heads, NW 102 TB, Aeromotive stealth fuel system, Fast 102 plumbed with a nitrous express direct port kit, BMR 15" conversion kit

07-08-2014, 02:44 PM	#5
thahemp Geek Drives: 2012 Black LS3 Join Date: Jan 2012 Location: Derby, KS Posts: 4,343 View My Garage	Well.. it's definitely not normal. My first thought was traction control jacking with you in places you hadn't experienced before. Any other info you can provide? __________________ 01000111011011110110111101100100001000000110110001 11010101100011011010110010000001110111011010010111 01000110100000100000011101000110100001101001011100 110010000001101111011011100110010100100001 x = ac97968bd3df8f968c8cd3df998a9c94d3df9c8a918bd3df9c 909c94df8c8a9c949a8dd3df92908b979a8ddf998a9c949a8d d3df8b968b8cd1 x = ~x

07-08-2014, 03:16 PM	#8
thahemp Geek Drives: 2012 Black LS3 Join Date: Jan 2012 Location: Derby, KS Posts: 4,343 View My Garage	I always thought mine only did it when I was accelerating hard, but who knows... I run with TC off all the time just to avoid it. You might try driving around without TC and see if it still does it. If you can log it that would be great. Otherwise... give Matt a call. He sure wouldn't want your car acting up like it is. __________________ 01000111011011110110111101100100001000000110110001 11010101100011011010110010000001110111011010010111 01000110100000100000011101000110100001101001011100 110010000001101111011011100110010100100001 x = ac97968bd3df8f968c8cd3df998a9c94d3df9c8a918bd3df9c 909c94df8c8a9c949a8dd3df92908b979a8ddf998a9c949a8d d3df8b968b8cd1 x = ~x

07-08-2014, 01:26 PM	#3
union894 Drives: 2016 Camaro 2ss 8A Join Date: Aug 2011 Location: USA Posts: 394 View My Garage	No, it's when I take off at normal acceleration, doesn't happen often.

07-08-2014, 03:09 PM	#6
union894 Drives: 2016 Camaro 2ss 8A Join Date: Aug 2011 Location: USA Posts: 394 View My Garage	When it does it, it bucks or hesitates, then it's fine.

07-08-2014, 03:14 PM	#7
Camaro Dude Drives: ‘13 1LE Join Date: Jul 2013 Location: Earth Posts: 3,904	A vacuum gauge would certainly help out trouble shooting this. Does your tach needle move erratically when it exhibits this symptom? Last but certainly not least, check your spark plugs for tightness and ditto on the plug boots. This IMHO would be best case scenario if it's spark related, but doubtful..check though. I doubt it's the latter, sounds like a lean condition back firing through the intake, wish a vacuum gauge was up and running.

07-08-2014, 03:18 PM	#9
union894 Drives: 2016 Camaro 2ss 8A Join Date: Aug 2011 Location: USA Posts: 394 View My Garage	It'll be hard to get a video or sound as it's only done it 2-3 times and I can't predict when it will happen. I think I'll give Matt from FSP a call, doesn't sound like this is something that happens normally. I only use 93 fuel from Shell or Sunoco.

07-08-2014, 03:32 PM	#11
union894 Drives: 2016 Camaro 2ss 8A Join Date: Aug 2011 Location: USA Posts: 394 View My Garage	All the plugs and caps are good.

07-08-2014, 03:43 PM	#13
union894 Drives: 2016 Camaro 2ss 8A Join Date: Aug 2011 Location: USA Posts: 394 View My Garage	Yeah that's what I figured, thanks for the help!

07-08-2014, 03:50 PM	#14
Fred 6528 Drives: 2011 ss Join Date: May 2013 Location: va Posts: 983	Does it pop when you try to take off real easy not giving it a lot of throttle