1ft of fire coming out of my exhaust pipe!

[GSTdude06]

This problem just started a couple days ago but I just notice that fire was coming out tonight.

When im in second gear and on around 4k it makes a LOUD POP noise and fire shoots out while it pops it stops boosting but then once the pop is gone it boosts then pops again then I have to shift.

Ive only seen this problem in second cause once I noticed it I stopped driving it WOT


Could my air/fuel mixture be wrong? To much fuel not enough air so Im getting gas in my tail pipe that explodes?

Help Please!

 

[GSTdude06]

Ok I drove it and it still does it. Same problem car stops pops goes stops pops goes.

I dont think thats the answer

 

[MrBoxx]

I believe it's usually called "draw through."

Thank you! I was racking my brain for that word, but it wasn't coming up.

 

[mavisky]

I told you that it didn't matter whether it was vented or not. That's not going to cause any problems while you're actually accelerating. I see you have a 255 pump, no pressure regulator, and an S-AFC. What sort of tuning work do you have done to the car, is the popping and backfiring related to boost. I had the same problem yesterday. My issues were fouled plugs, boost leak, and my tuning was off. Once I fixed those three problems it completely went away. I'd be willing to bet yours is either one or all of the above.

 

[GSTdude06]

I got the fpr in today I just have to put it on, and I have no tuning at all but I have brand new plugs and wires. So once I get the fpr on ill mess around with the SAFC controller. Hope it fixes the problem

Thanks

 

[GSTdude06]

Ok I have to wait till I get the adapter plate in, so hopfully when I get that in ill have my leaks all fixed cept my EGR valve leak is killing me it doesnt seal AT ALL! But im going to keep on trying and this weekend ill be doing my injector leaks so I hope it all goes good.

Thanks for the help!

 

[GSTdude06]

Ok I got a update for my problem....

FPR is hooked up and at idle is holding 43 and full throttle it moves to around 45....good right?

Now when drive first gear WOT full power. Second gear full power till about 5k and it pops ONCE this time before it was poping twice each time a foot flame this time I couldnte tell if there was a flame but it only did once then boosted full power after.


Any ideas on problems?

 

[bkblazen2003]

it can be your cam sensor going bad. mine did that for months when i first got my 1g. if feels like fuel cut when the problem eventually gets worst. it's a missfire.

eventually my cas went completely bad and the car stopped starting.

i did not get flames since my car was all stock at that time. you car is bucking right.

 

[bkblazen2003]

don't justthink it's you cas though. that what caused it for me. any ignition part can be the problem. i'm just letting you know it sounds like a missfire

 

[kevingst]

got pics? ttiwwop

 

[GSTdude06]

Pictures of what? I dont know what that thing is, sorry.

 

[kevingst]

t.t.i.w.w.o.p. this thread is worthless without pics. Of course, not really worthless...but pics would be awesome.

 

[eclipsegsx1736]

got pics? ttiwwop

Post pics of what? His flames? I'll save him the trouble...it probably looks something like this

 

[GSTdude06]

OOOO well What do you want pics of? The flame? Engine? Name it and ill take the picture.

 

[kevingst]

Post pics of what? His flames? I'll save him the trouble...it probably looks something like this

Oooooh, now that looks badass. You CANNOT tell me you don't think that looks cool.

OOOO well What do you want pics of? The flame? Engine? Name it and ill take the picture.

This is actually to both: What is the thread about? The flame. So...common sense should lead one to the determination that the pic request would be for the flame. Also sounds like you may have something causing you to run lean. I just looked back again. How's it coming with all your leaks? You HAVE to get rid of them. Once, after installing my fmic, I would get on it and as soon as boost would start building my car acted like I was hitting a stutterbox rev limiter. I couldn't hardly find from where because the connector was still on, just loose. So short story: can't really figure out anything further until the leaks are all gone. Just keep the updates coming.

 

[iboostdoyou]

Oooooh, now that looks badass. You CANNOT tell me you don't think that looks cool.
This actually to both: What is the thread about? The flame. So...common sense should lead one to the determination that the pic request would be for the flame. Also sounds like you may have something causing you to run lean. I just back again. How's it coming with all your leaks? You HAVE to get rid of them. Once, after installing my fmic, I would get on it and as soon as boost would start building my car acted like I was hitting a stutterbox rev limiter. I couldn't hardly find from where because the connector was still on, just loose. So short story: can't really figure out anything further until the leaks are all gone. Just keep the updates coming.

you make no sense... first of all how will he take pics of the "flame" while driving, even if he has a friend take the picture, what will that solve? A flame is a flame, it wont give us any clues as to what the problem is. Second of all, having a boost leak will NOT make you run lean, nor will running lean make you shoot flames and pop the exhaust. A rich condition will cause this problem. He also said in his first post that the car would shoot a flame, buck, and then he would have to shift. Sounds like either an insanely rich condition from a base tune, or massive fuel cut. Both can be related. If you have a stock turbo on the car, or low boost on an upgraded one, then check to make sure your MAF is still in working order. A busted MAF will cause not only a bad a/f ratio, but premature fuel cut, so check that out before you go buying a maft to solve your venting problems

 

[kevingst]

you make no sense... first of all how will he take pics of the "flame" while driving, even if he has a friend take the picture, what will that solve? A flame is a flame, it wont give us any clues as to what the problem is. Second of all, having a boost leak will NOT make you run lean, nor will running lean make you shoot flames and pop the exhaust. A rich condition will cause this problem. He also said in his first post that the car would shoot a flame, buck, and then he would have to shift. Sounds like either an insanely rich condition from a base tune, or massive fuel cut. Both can be related. If you have a stock turbo on the car, or low boost on an upgraded one, then check to make sure your MAF is still in working order. A busted MAF will cause not only a bad a/f ratio, but premature fuel cut, so check that out before you go buying a maft to solve your venting problems

DO NOT... make personal comments like, "you make no sense"!! Try something more along the lines of, "I do not understand you." First of all he can have a friend take the pic. And NEVER did you see me say I wanted the pic for troubleshooting purposes. I just wanted to see it because it looks cool, I thought I'd made that fairly clear. And second of all, if it could only happen from a rich condition then I'd have had it happening last week when I discovered I was running lower than 9:1 afr. And when I made the lean comment I wasn't sure what throttle position he was (partial, full, letting off from full, etc). I was only headed that direction because of race cars, such as jgtc. I doubt they run rich while wot, more likely lean, but then when they let off they pop flames. BUT then I read back and saw where he was popping and flaming under wot, so I changed my direction and went back to the boost leaks. I swear I hate having to go through explanations just because someone didn't take the time to fully read a post and fully comprehend it.

 

[iboostdoyou]

sorry for the "personal" comment, didnt know it would offend you ... having a boost leak does just that, leak boost. If the MAF see's 20 units of air coming in, it adds x amount of fuel to match it. If 5 units of air leak out due to the boost leak, then you'll have the proportionate amount of extra fuel being sent to the motor where there is no air to match it. Hence a rich condition, not lean. The popping noises are backfires, most commonly caused by extra unburnt fuel in the exhaust that ignites because of the high temeratures in the exhaust. And yes, this is happening at WOT in second gear so 99% chance it is fuel cut, causing a massively rich condition right as it it stops boosting, causing the flames to shoot, then return back to normal when he must shift. Change the settings on the safc to compensate/trick the MAS so you wont hit fuel cut anymore, but make sure your A/F is perfect or you'll blow the motor. If that doesnt work, you have a faulty MAS that should be swapped out.

 

[kevingst]

In summary: wot rich= no, rich from boost leaks= yes, wot lean then off throttle yes

 

[dsmgrimreaper]

What is a MAFT? Where can I get it? And why do I need one?

Ive never heard of it. Sorry.

talondude4 post a tech article on this whole prossess it has links pics and everything you need to know about venting the safe way

 

[GSTdude06]

Would 20+ psi be bad on stock injectors?

 

[kevingst]

Would 20+ psi be bad on stock injectors?

Yes. On stock injectors w/ a 14b, walbro 190 on 93octane I couldn't get above 18psi without invoking severe fuel cut. With your 255 and fuel pressure bumped up, you may be able to get by, but I would imagine those injector would really be maxed out. Sorry, I can't really say other than that because I got rid of fuel cut when I got dsmlink, but I also added 650 injectors at the same time.

 

[mavisky]

I wouldn't try it. I just barely got by on it during 1/4mile runs, but ended up melting a hole in one of my pistons doing a highway pull.

BTW, I would've known about it not being a good idea, but some A-hole decided to steal my s-afc, datalogger, and guages. All i had was a $10 boost guage and listening for knock.

 

[GSTdude06]

Well ill get a logger as soon as I can, and a mbc that works so I can turn the boost down.

I no im running really rich my exhaust is blacker than the night sky after I clean the tip to perfect chrome.

I have to get a logger so I can tune so I will ASAP.

Thanks

 

[DSMHowtness]

I've had the progrem before, I was just running way to rich.

 

[GSTdude06]

Update:

So for the time being since I was running SO rich I looked around this website and found the honeycomb in the MAF.

Well after reading like every post possible I chose to take out 1 of them. The bottom one to be exact.

Took it for a spin only could get through 2nd cause its rush hour now so I didnt want to get on the highway.

NO FIRE NO POP NOTHING.....running good?

Took it down the road floored first nothing
Floored second nothing
Stopped went again but after second my intercooler pipe came lose so all my boost leaked out

But thats fixed and is all good so hopfully im not running as rich as I was....

Honeycomb a good idea? My idle is same as it was with it in also.

-Logan