Fj60 explosion! Wtf!

[dorcom]

It was an early in the morning, the engine still warming up I had to rev up a little to pass a slow moving truck. After momentary deceleration during shifting I heard huge earth shattering solid BANG! and the I had a little louder Landcruza.

Well as you can see my muffler did not survive the explosion and literally got torn apart.

QUESTION: I'm soon due for smog, what 2" "performance" muffler as well as CAT can I legally install in California? I don't mind a bit of a sound but since I'm due soon for smog and I don't want a problem with CAT or muffler.

Anyone knows? Thanks.

 

[specialk396]

Put a factory one back on. I don't believe you are going to gain any performance with a Flowmaster on an otherwise stock 2F. I've got a welded downey muffler with 2.5 on my FJ62 and it drones at odd rpms, with no increase in power.

 

[klinetime574]

Sounds like you got a huge backfire!

Looks like it too!

Thanks for posting that picture haha

 

[ivdusmc]

I had that happen on a Jeep TJ. The cause was my CAT. the cat had a peice come loose and came back into the muffler. after a while the back pressure in the muffler was more then it could handle. Any 50 state legal replacement shouldnt hurt your chances for passing smog, i am sure the 2f will find a way to fail you on its own.

 

[cruiser88]

I think I would be looking into the ig. system

 

[TobyB]

Hey! Mine looks just like that!!!

t

 

[Pighead]

Choke was still on I bet...

 

[daveIT]

Did you drive over a land mine?

 

[Jan-78FJ40]

You need to get a cat/muffler that specifically says CA legal on it. In stamped letters, visible from underneath. This is part of the smog inspection and you will fail (if the inspector is a prick, which is likely), if you do not have this stamped on it.
cheers,
jan

 

[slacker24-7]

like when we were kids and would shut off the key while driving then turn it back on... BOOM !! every once in a while a muffler would get blown up ...

 

[billmc]

also, check your decel fuel cut solenoid and its wiring

 

[lehiguy]

Congrats! You somehow had in your muffler an air/fuel ratio somewhere close to stoichiometric. Needless to say, but you have a problem. Fuel cutoff solenoid or excessive air in the exhaust, could be a number of things or a combination of several. Time for an in-depth under-the-hood review. A long, long time ago I had a lowly Pinto that did this because a crack in the colector pipe let in air. The muffler looked like an accordian afterwards.

 

[TobyB]

yeah, the air pump lines on mine were shot...

t

 

[marcop60]

Put a factory one back on. I don't believe you are going to gain any performance with a Flowmaster on an otherwise stock 2F. I've got a welded downey muffler with 2.5 on my FJ62 and it drones at odd rpms, with no increase in power.

i put a magna flow on my 60 with 2.25 pipes and i got over 15 mpg freeway, i think 2.5 is a little big for the 2F? idk but a muffler worked for me

 

[deltapine1]

COOL! That had to generate some shrapnel.