2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

Need a Diagnosis

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Old Mar 31, 2008 | 11:57 AM
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rallycobalt06's Avatar
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From: Newark, DE
Need a Diagnosis

yesterday i was cruising with a friend and he wanted me to pass this chick he new. so i dropped it into 3rd, switched lanes, shifted to 4th, passed her, switched lanes again and shifted into 5th.....as soon as i went to fifth and gunned it i heard a very loud back fire and saw a lot of black smoke come out my exhaust and my car stalled out. once i pulled over to the shoulder and came to a stop, i was able to start it right back up and it drove fine. any idea of what happened or what could cause that?
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Old Mar 31, 2008 | 12:44 PM
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Any loss of power after you started it back up and drove? In high gears at low rpm under hard acceleration you could have just dumped a bunch of fuel through (or dumped a bunch in the middle of shifting) and just experienced a nice BIG backfire which i'd think might even cause your car to stall in itself due to the expansion of gas forward towards your engine as well as out the rear making a fireball and causing a slight case of increased backpressure forcing your car to stall out (which is much easier to do when at low rpms).

Its probably not good for you car, kinda like dropping the clutch and stalling, but it may not have hurt anything at all.

Oh yeah, check your plugs make sure they're gapped properly and aren't all fouled cause they might not be sparking fully and could be the cause of the fuel getting past and igniting in your exhaust.
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Old Mar 31, 2008 | 12:45 PM
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Ha ha... I'm sorry. I don't know, but that made me laugh. Take it to the dealership?
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Old Mar 31, 2008 | 12:48 PM
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agreed. sounds about right to me.

i've had some weird stuff like that, but never that exact issue. my car's still running fine.
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Old Mar 31, 2008 | 01:09 PM
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rallycobalt06's Avatar
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From: Newark, DE
yea my car ended up running fine after i started it back up. i did realized a slight decrease in the fuel gauge

Originally Posted by JPizzle
Ha ha... I'm sorry. I don't know, but that made me laugh. Take it to the dealership?
i'm not taking my car to the dealership, as soon as i pull into the lot they'll void the warranty.

Last edited by rallycobalt06; Mar 31, 2008 at 01:09 PM. Reason: Automerged Doublepost
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Old Mar 31, 2008 | 01:14 PM
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From: Cbus
When you go catless its bound to happen...probably shot some flames too. Flames are cool, I wish our cars had no lift like the new ones because every time you shift without lifting it fires out a nice pop...at least w/o a cat, not sure if they do it stock lol.
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Old Mar 31, 2008 | 01:19 PM
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i've been told before that i shot flames out before, if there was flames this time judging by the loud pop and stalling my car....it would of been really big.
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Old Mar 31, 2008 | 01:25 PM
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You Still running that crappy intense tune?
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Old Mar 31, 2008 | 01:44 PM
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rallycobalt06's Avatar
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From: Newark, DE
Originally Posted by YellowLT
You Still running that crappy intense tune?
ummmm, i've never had an Intense tune......but i am running a crappy tune i'll be getting dyno tuned April 12th.
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Old Mar 31, 2008 | 02:02 PM
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Originally Posted by rallycobalt06
ummmm, i've never had an Intense tune......but i am running a crappy tune i'll be getting dyno tuned April 12th.
I thought you bought Intense Stage 5?????
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Old Mar 31, 2008 | 02:03 PM
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rallycobalt06's Avatar
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From: Newark, DE
nope, i pieced together a "stage 4" and got a custom tune from a certain person that lives down the road from you
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Old Mar 31, 2008 | 04:54 PM
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Originally Posted by rallycobalt06
nope, i pieced together a "stage 4" and got a custom tune from a certain person that lives down the road from you
Ron tuned it??? I like his tunes. HMMMMMM You have any cooling mods??
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Old Mar 31, 2008 | 08:53 PM
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From: Newark, DE
yea i got plenty of cooling mods, but his tune is off. i didn't have a wideband gauge so he couldn't get a good tune on there. but when i called back to get up with him about getting re-tune he doesn't answer his phone or return my calls. but it's cool, i'm getting dyno tuned in a couple of weeks.
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Old Mar 31, 2008 | 08:57 PM
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XM15's Avatar
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You got a tune without a wideband for a 2.6" pulley? You were asking for it.
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Old Mar 31, 2008 | 09:15 PM
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From: newjersery
i'm puffing black smoke but its because my air/fuels all retarded..check your plugs see if there burnt.
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