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I was just wondering if some backfiring from the exhaust is normal. My car does it. Usually when high boost, or when I put the car in neutral after driving, it will for a sec. I hear this on srt4's, sti's, other turbo'd cars all the time. It sounds normal for a FI motor?? Am I right, or wrong? If not, would you think its running rich. The smoke that comes out when shifting is a greyish, so that should be fine. as long as it isnt white or black??

 
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I hear it from mycar when i punch hard from 1st gear. . .

 
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so it would be normal?

 
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No it is not. That is a sign of tuning needing to be done.

 
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I was wondering. I havent driven my car much in the last month. And the weathers changed about 50 degrees. I need another tune, but was wondering why every srt4 and other factory boosted cars are backfiring as well. Doesnt make sense.


Isnt backfiring cause by extra fuel being burned in the exhaust, or in the IM (which is terrible for our car seeing as how its plastic)

 
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With that drastic of a temp change additional tuning is defintiely needed. The fuel atomizes differently and burns differently at different temps causing 'hicups' like that.

 
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i have it too but i still need more tuning

 
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yeah, I have to get tuned at least twice a year here. A wideband a/f is gonna be my next mod, lol. Im happy I dont have to drive it much right now, and I will only boost at night, since it cools down drastically (to the temp at which I got tuned)


Michalo knows, hell have to get tuned just as much as me, hehe.

My car doesnt backfire nearly as much as most cars I hear. Only half the time, and not too bad most the time, its very quiet, doesnt mean it isnt bad though.

 
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My car does it and it is tuned with K-pro in fact i have had it tuned twice. Mine only does it at idle, It sound like a WRX when at idle it has a funny bubbling sound come out of the exhaust.

 
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Everytime there are drastic temp, altitude or humidity changes more tunign is needed. You in essence need different maps for every season.

 
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Yeah like dezod said. It should be smooth and no bogging, smoke or backfiring.

 
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Hey, HyaBoosta did you ever get the e-manage up and running that i sold you? I so how is it running?

 
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Hey dezod what is your daily psi right now? Prototype wrecked his tranny at 8psi...

 
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Vac now.

The 7thgen was sold back in February.

 
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I have another question. How do cars that are factory turbo'd not need tuning every season?? Does it adjust by temp, or do they just run it rich? My friend and I were wondering this.

 
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my guess is that their ecu's are programmed to input data and output response based on that data. Much like the stock ECU on our cars. Our ECU's don't do that, because our only means of tuning (besides aem ems) is to piggy back...and these piggy-back devices cannot compensate for these changes in climate and atmosphere.

 
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tuning owns all

 
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hell yeah it does. But how can factory turbo'd cars go without it every season? Im thinking it adjusts automatically by temp and conditions??

 
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thats the beauty of factory

 
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Yes indeed.

Sophisticated algorithms used in conjunction with MAF, KV, BARO, MAP and/or knock sensors with also TPS, O2, AIT, OT readings to accomodate for a *almost* normal running condition despite weather, altitude, octane etc.

Ahhhh the joys of a stock turbo'd car.

 
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my car backfires now after i took my turbo kit off. NA setup now. sounds like freakin gun shots going off. stupid car.

 
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damn. pretty sophisticated ****. lol I figured it adjusts for different conditions. I didnt know if they ran it rich from the factory, but that wouldnt make much sense.

 
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YES TUNNIN will show if its good or bad....... Backfiring.. could mean as many bad things as it could be good...
Mine did but that was cuz i was runnin like 11's and sometimes 10.9's on my O2 Charts./.. when it backfired,, I trough out Black smoke from the exahust > GAS/RICH
I luved it though.. haha

It made it look like if it was as strong as a SUPRA>. they do it all the time..


Its was only when I was in boost... When i drove normal. it never did it!..

 
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My neighbors 10.5 sec car backfires a hell of a lot. its got 750 rwhp, blown. its sick as hell. its a Formula as he calls it (looks like a new trans am)

 
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I was just about to make a post. My car back fires occasionally. But i'm NA and never had any forced induction in my engine. Just intake and exhaust.

I was downtown and my car backfired, people were screaming gunshots!! Some guy I over heard saying "**** hes gotta have alot of power to make it backfire like that"

I just put my head down and whispered to myself my car is ghetto.

 
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on certain cars it can happen with simple mods, take for example the wrx/sti, all you need is an atmospheric bov and a tbe and vioala you have after fire...

your just not burning all the fuel and running rich for an instant and it hits your hot exhaust tip and kablamo!! tune

 
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its funny. i was in the holand tunnel and my car backfired and that **** echod load as ****. lol it was crazy.

 
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So why not just get like an AEM EFI were you can pre tune your car for seasons, save the data package on you computer, and then ever season instead of tuning it, just swap the pakage out? in the end wouldnt that save money?

 
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Can't you do that with the E-01 boost controller? Mine has little memory cards but i havent found where they sell other ones.