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#1
10-25-2005, 05:42 PM
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Backfire - Good/Bad?
I have a stock S14 SR20DET (Zenki) in my car with a testpipe, hks hi-power exhaust, intake, and greddy downpipe. My car backfires every time i change gears. I just wanted to know if that is normal and if it is good or bad. Cuz i've heard that it's not bad from some people, and then i hear that it can mess up the turbo from others. So i don't know what to do. I just want to get this cleared up, and fix it if i have to. My spark plugs are also gapped at 28 if that makes a difference. Thanks for the help.
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#2
10-25-2005, 06:07 PM
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if your blow off valve vented to atmosphere? if it is, that is the reason why your backfiring. also backfiring maybe cool at first but it is not good. it basically means that your just dumping fuel into the tailpipe. it probrably bogs alittle too after you change gears too right?
__________________
303whp stock internal KA-T 94 Acura NSX  Best E.T. 13.559 Best Trap speed 107.62 mph
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#3
10-25-2005, 07:05 PM
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Re: Backfire - Good/Bad?
u have no cat and ur BOV is set too loose, what i mean by that, is when i set my spring lode on the BOV to loose (open for a long time) my car back fired like crazy. when i tighten it, problem solved.
back fire is ok , but with the price of gas... i don't know man!
__________________
"A good driver is measured not by his lap times, but by the amount of time he spend trying to make sense of his car" E.K.
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#5
10-25-2005, 08:27 PM
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Re: Backfire - Good/Bad?
If you are idling good, then the BOV is set just fine. Backfires are normal.
__________________
-Cory 1992 Nissan 240sx KA24DE-Turbo: The Showcar Stock internals. Daily driven. 12.6@122mph 496whp/436wtq at 25psi
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#6
10-25-2005, 10:20 PM
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I'm running the stock BOV right now. It doesnt bog though when i change gears. As long as it's normal, than i'm not worried. Just wanted to make sure it doesnt damage anything or needs to be corrected. Thanks a lot guys
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#8
10-26-2005, 02:45 AM
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Hahahaha. Flames through the rear view. I'm switchin the stock to the HKS one soon though. Hope it doesnt get worse. Thanks
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#9
10-26-2005, 10:08 PM
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Re: Backfire - Good/Bad?
backfires are common with modified cars. get used to it.
if you don't want them, take a brick and shove it in your exhaust. 
__________________
438whp / 373tq - 11.9 @ 126 
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#10
10-27-2005, 02:21 AM
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Re: Backfire - Good/Bad?
I love backfires with flames.
My old SR20DET did one driving through a neighborhood. A very dark street, just cruising at about 25mph I down shifted to 2nd to slow to a stop and my whole rearview mirror was lit up in blue flame and the area immediately behind the car was all lit up. Coolest thing I'd ever seen... and I wasn't even on it. Never could get it to do it again though, which depressed me. Flames = Badass Shooting fireballs is one of the main reasons I went turbocharged. I just love watching them, or hearing them. I need another turbo car. 
__________________
2003 Chevy 1500HD - Hauler 1971 Chevy Camaro RS - Track Car User Guidelines It's important to read, like the Bible. But unlike the Bible we will strike you down if you jerk off around here.
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