backfire
09-03-2003, 11:42 AM
#1
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backfire
So i've got an apexi n1 catback, and a turbo xs uppipe. Had em for about a year, sounds great, runs fine. Then the warmest summer in years hits western WA and my car's backifiring left and right.
Now, the only thing i've changed between now and then was taknig off my cia and putting the stock box with chopped silencer back on, Could'nt stand the noise anymore.
So I think I'm running rich, but gas milalige is normal the car dos,nt bog. Would the air that's escaping from my bov be enough to make me run rich? I don't really think so, but I hate backfires, any thought's?
Now, the only thing i've changed between now and then was taknig off my cia and putting the stock box with chopped silencer back on, Could'nt stand the noise anymore.
So I think I'm running rich, but gas milalige is normal the car dos,nt bog. Would the air that's escaping from my bov be enough to make me run rich? I don't really think so, but I hate backfires, any thought's?
09-03-2003, 09:29 PM
#2
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from what i have heard, using an aftermarket bov will help cause backfires. but if you are backfiring, then you are running rich. plus the car runs rich stock.
09-03-2003, 10:25 PM
#3
well, i have a similar set-up, however, i have an N1 and running catless. my afterfires are pretty loud, i scare half the block i think. the N1 exhaust is pretty loud in itself. i also have a 100% atmospheric which just adds to the richness. with upgraded injectors and turbo, i should be having some fireballs coming out from the back along with that loud POW! it's pretty cool sometimes.
09-05-2003, 12:55 PM
#7
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Alright, I'll ask the dumb question.What's the difference between after and back?
I've been turning wrenches for quite a few years and have always considered a loud pop from the pipe as an indication of the suckage of that particular vehicle. As it is normally heard from busted *** z28's limping through down town.
I know it's actually exhaust gasses ignighting in the pipes hence the big bang. And I've always figured it was just a result of leaks or gas chugging carbuerated engines. But I also see some of my favorite straight pipe racecars spitting fire on occasion.
Some clarification would be nice.
I've been turning wrenches for quite a few years and have always considered a loud pop from the pipe as an indication of the suckage of that particular vehicle. As it is normally heard from busted *** z28's limping through down town.
I know it's actually exhaust gasses ignighting in the pipes hence the big bang. And I've always figured it was just a result of leaks or gas chugging carbuerated engines. But I also see some of my favorite straight pipe racecars spitting fire on occasion.
Some clarification would be nice.
09-05-2003, 08:19 PM
#9
would you still be able to spit out flames with the stock turbo and stock fuel system would you have to upgrade both the turbo and fuel system? just wondering because i'm totally catless and have a hell of a loud afterfire, but not sure if there are those little fire ***** out the exhaust. not like i want them, but just a little wonder of mine.
09-06-2003, 02:22 PM
#10
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You could do it on a nearly stock car. Add catless exhaust and an atmo BOV and you'll get it all the time. It's a matter of having unburned fuel in the exhaust stream that spontaneously ignites from hitting the hot metal. Usually this happens when it hits the cat (that's actually what it's supposed to do- it's how it works) but if you remove them, it gets louder. Even my RS with factory cat, Borlas, and Magnaflow gets a lot of popping from fuel hitting the cat.
09-07-2003, 07:32 PM
#11
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I have gruppe-s up pipe - no cat
HKS 3" down pipe - no cat
Apexi N1 cat back
Stock fuel
I shoot flames quite often, they usually stay in or about 1-3" out of the exhaust, they look sweet
Nick
HKS 3" down pipe - no cat
Apexi N1 cat back
Stock fuel
I shoot flames quite often, they usually stay in or about 1-3" out of the exhaust, they look sweet
Nick
09-09-2003, 06:51 PM
#12
Originally posted by SuboobaruWRSEX
I have gruppe-s up pipe - no cat
HKS 3" down pipe - no cat
Apexi N1 cat back
Stock fuel
I shoot flames quite often, they usually stay in or about 1-3" out of the exhaust, they look sweet
Nick
I have gruppe-s up pipe - no cat
HKS 3" down pipe - no cat
Apexi N1 cat back
Stock fuel
I shoot flames quite often, they usually stay in or about 1-3" out of the exhaust, they look sweet
Nick
i have the same also:
catless up-pipe
helix downpipe
apex N1 3" custom turboback
is it me or is the N1 exhaust system (catless) a raspy sounding exhaust. i sort of love it though. sounds cool. how does your set-up sound, raspy? also, how did you notice you were shooting flames? i wonder if i'm shooting little flame ***** too?
09-09-2003, 09:03 PM
#13
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Originally posted by BAN SUVS
You could do it on a nearly stock car.
You could do it on a nearly stock car.
You can hear it if you go to the SRT-4 flash site (which you can reach from www.dodge.com), and click on "Virtual Tour" and then "Start Engine". The crackling noise isn't wind noise, and if you hear it in person, the car is definitly backfiring a little.
09-10-2003, 08:09 AM
#14
i have two questions. 1) If i remove my Turboxs RFL blow off valve, will it stop the back-firing? 2) I seem to backfire whenever I downshift pretty hard at a high RPM. Is this a backfire or an afterfire?
09-10-2003, 10:47 AM
#15
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First my friends were driving behind me and saw it. Then I parked it an had my buudy rev it to 7,000 three or four times and it shot fire. From what I have read between 2nd and 3rd in hard driving is when you are most likely to shoot. And if you do that you can hear it shoot. I like the 4cyl boxter growl that the Apexi has. It dosnt sound like any other 4 out there.
Nick
Nick