backfiring after o/r x install

1994Vib.RedGT

Member

Aug 19, 2004

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Denver, CO

Jun 20, 2005

#1

• Jun 20, 2005

• #1

I just recently installed my bassani o/r x and ever since I have, when I downshift, or rev in neutral up past about 2500~3000 RPM I get backfiring. Especially if I downshift and the revs go up to about 3000 it sounds like a gun going off, why is this??? Does it have something to do with the lack of cats?

 

P

pat farina

New Member

Jan 6, 2002

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British Columbia

Jun 20, 2005

#2

• Jun 20, 2005

• #2

mine did that too check your timing you might have too much..

 

1994Vib.RedGT

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Aug 19, 2004

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Denver, CO

Jun 20, 2005

#3

• Jun 20, 2005

• #3

no, i just put new timing chain, water pump, plugs, rotor, and dist. cap last week, timing is not the issue.

 

CManT1914

New Member

Feb 5, 2004

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Killeen, Texas

Jun 20, 2005

#4

• Jun 20, 2005

• #4

Is it actual backfiring or is it just popping? It's normal to have popping after installing an o/r mid-pipe, since it has no cats, it's just the unburnt fuel igniting in the pipes.

 

TheDamned

"I am Canadian and Damned for it!"

Jul 22, 2003

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48

Montréal, Québec, Canada

Jun 20, 2005

#5

• Jun 20, 2005

• #5

CManT1914 said:

Is it actual backfiring or is it just popping? It's normal to have popping after installing an o/r mid-pipe, since it has no cats, it's just the unburnt fuel igniting in the pipes.

Click to expand...

exactly, i get ALOT of popping on decel.... and i love it, it sounds badass!!

 

mo_dingo

20+ Year Stangneter

Aug 26, 2003

3,031

2

58

Tucson, AZ

Jun 20, 2005

#6

• Jun 20, 2005

• #6

yeah, backfiring sounds like a LOUD gunshot, not popping. it's Probably normal.
Scott

 

cobra dave

New Member

Sep 1, 2003

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0

Jun 20, 2005

#7

• Jun 20, 2005

• #7

If your sig is still up to date it's probably because of the flows matched to the Bassani o/r x. I'm assuming your getting a hell of a drone too?

 

go-stang5.0

New Member

Jan 27, 2003

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Glenview,Il

Jun 21, 2005

#8

• Jun 21, 2005

• #8

Have someone stand behind your car when you do this and see if there are fire balls coming out of your tail pipes. Its probably just excess fuel.

 

S

slidewayz94

New Member

Nov 24, 2004

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Sacramento, CA

Jun 21, 2005

#9

• Jun 21, 2005

• #9

that popping sound is the best from an x or h pipe!!!

 

SaltWaterFish

Founding Member

Jan 6, 2002

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Cedar Rapids, IA

Jun 21, 2005

#10

• Jun 21, 2005

• #10

Check for leaks. I've been told that cool air sucked threw holes in the pipes can cause popping during decel.

 

HGFireHazard

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Apr 10, 2005

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Michigan

Jun 21, 2005

#11

• Jun 21, 2005

• #11

When I had my LT headers put on and got the car back to take it to have the rest of the exhaust put on, I had 'gunshots' every 3 or 4 seconds, people would look at me like I was crazy. Turns out my mechaninc reversed two of the plug wires Anyways, we just turned them around and all was fine and I got my power back. It's amazing because that was the first thing that should have crossed my mind, but it never did until he mentioned it...

 

droptopford 5 0

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Mar 31, 2005

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Jun 21, 2005

#12

• Jun 21, 2005

• #12

CManT1914 said:

Is it actual backfiring or is it just popping? It's normal to have popping after installing an o/r mid-pipe, since it has no cats, it's just the unburnt fuel igniting in the pipes.

Click to expand...

backfiring IS unburnt fuel igniting in the pipes isnt it? the light popping on decel is not necessarily igniting fuel since my MAC cat back system used to do it lightly with the stock h pipe, now with the o/r h pipe i get this much louder than before, but actual backfire is much louder and should not occur very often unless heavy throttle shifting, or downshifting

 

1994Vib.RedGT

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Aug 19, 2004

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Denver, CO

Jun 21, 2005

#13

• Jun 21, 2005

• #13

no its not the popping, that is awesome, i have had the actual gunshot sounding noise, and it sucks

 

1994Vib.RedGT

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Aug 19, 2004

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Denver, CO

Jun 21, 2005

#14

• Jun 21, 2005

• #14

bump

 

HGFireHazard

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Apr 10, 2005

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Michigan

Jun 21, 2005

#15

• Jun 21, 2005

• #15

Alright two things. Cats (or a lack thereof) shouldn't have any effect on an exhaust except for maybe a few more horsies . Second, I know you said you just did your timing and all of that wonderful stuff last week, but find a light and check the timing anyways. Unless your O2s aren't hooked up right it's the only thing I can come up with.

 

1994Vib.RedGT

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Aug 19, 2004

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Denver, CO

Jun 23, 2005

#16

• Jun 23, 2005

• #16

timing is exactly at 10 degress, o2 senors are 4 months old, and hooked up properly. what next?

 

Black95GTS

Active Member

Jan 8, 2004

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38

Marlborough, MA

Jun 23, 2005

#17

• Jun 23, 2005

• #17

I get the popping same as you do. My timing is also dead on. I don't think its anything to worry about.

 

haulbalz

Founding Member

Apr 6, 2002

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Jun 23, 2005

#18

• Jun 23, 2005

• #18

Ttt