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Pop/Backfire at WOT and shifting...normal?

9.8K views 33 replies 16 participants last post by  aaronc7  
#1 ·
#4 ·
i got it a little.
i have noticed it when i am driving normally then all of a sudden take off quickly from a stop while shifting into 2nd very hard.
figured that it is prolly just unburnt fuel. The car doesnt fall on its face or anything so I wouldnt think it would be a fuel cut.
 
#5 ·
[quote author=fdkss03 link=topic=112244.msg2325370#msg2325370 date=1211213085]
i got it a little.
i have noticed it when i am driving normally then all of a sudden take off quickly from a stop while shifting into 2nd very hard.
figured that it is prolly just unburnt fuel. The car doesnt fall on its face or anything so I wouldnt think it would be a fuel cut.
[/quote]

yep exactly like that. I didnt get it before I put on the TBE. Thanks
 
#7 ·
just out of curiosity, for the guys getting the pop/backfire: do all of you have aftermarket DV/BOV's?
 
#8 ·
since i have had the TBE on the car, i have had only 1 pop/backfire at 63000 rpm really hittin hard. I spaced for a second thinking i was not reving that high( came from a Si) and it popped. I changed my Turbosmart valve to full recirc after that and have not had the issue again, although i have only taken it up to 6000 since then with no issues. That shit scares me, so i learned from my mistake to not push it past 6 grand unless there is some valid reason to.
 
#11 ·
I started getting it after I swapped the BPV. It only happens occasionally. I think it might be that the BPV reacts too quick during shifts and dumps boost faster then the engine can do anything with the fuel. Just my theory.
 
#12 ·
[quote author=Ferdball link=topic=112244.msg2325639#msg2325639 date=1211218605]
I started getting it after I swapped the BPV. It only happens occasionally. I think it might be that the BPV reacts too quick during shifts and dumps boost faster then the engine can do anything with the fuel. Just my theory.
[/quote]

lol we might be totally wrong but thats what i was kinda thinkin
 
#14 ·
[quote author=aaronc7 link=topic=112244.msg2325620#msg2325620 date=1211218210]
I have forge (blue spring). 99.9% sure I got it with stock bpv too.
[/quote]

the blue spring is the one that's "close" to stock right? Or was that the green one???

I had a forge 007 in my Audi and if I recall, I ran the yellow spring which was for 20+psi.
 
#15 ·
mine backfires only when redline or driving hard or after driving hard when i start to drive normally it still pops i think its normal.
 
#16 ·
If you check my Cobb AP issues post looks like most of my issues are gone.

Still have "pops" and noises right after shifting, sometimes. If I am in fact running rich...I would have to have a leak somewhere right? I checked all conenctions/clamps and it's good. Even torqued the Bpv to proper specs (14 ft lb)
 
#19 ·
sometimes after i run it hard and turn the a/c on and would let off the clutch or hit the gas pedal at like 5mph i would get like ak-47 pops :lol: but not too loud though.
 
#20 ·
[quote author=diablospeed link=topic=112244.msg2326083#msg2326083 date=1211227691]
the pop is normal dude. i get one every single shift from day one on a DP.
[/quote]

really? I don't think I've ever had a single pop.
 
#25 ·
[quote author=aaronc7 link=topic=112244.msg2326130#msg2326130 date=1211228357]
I noticed it when I got a downpipe...so I think this only applies to DP/TBE people lol
[/quote]

damn you DP/TBE people!!! always tryin ta' hold a brotha down!!! :lol: