Need to repeat smog test here in Cali. Would a LPMM muffler with stock cats cause any problems? Just wondering if visually they might question the modded mufflers if they look under the car. Anybody experience any issues?

 

I've taken my Fister IIs through CA smog testing, which are similar to LPMM I'm guessing.

Smog monkeys wouldn't know what to look for anyway, so you're good with visual inspection.

Just get the car plenty hot before you go in and you should pass like I did.

Good luck

 

...And Fister IIs are more modified than the cross pipe installed in the LPMM.
If you're running an OEM cat and your O2 sensors are operating correctly, the smog guys would not have a clue as to modified mufflers, or not...Unless of course you run Fister IIIs or some cup car setup . Then the noise would be a dead giveaway!

 

I have passed CA smog successfully many times with my outrageously loud Fabspeed Supercups. I think you probably can get away with nothing behind the cats as long as all smog equipment is in place.

 

Passed 3 times with LPMM.

 

The way I understand CA smog is that everything back past the cat really doesn't matter.

I just recently took my cab in for smog test and the guy was blown away at how well it tested. Had it really good and hot when I went in and my car passed with flying colors. I myself was surprised at the "allowable" levels vs. the actual "reported" values on the printout they gave me. I have Fister stage 3's which look stock, but regardless, I doubt anyone would give you a hard time or notice a LPMM mod visually.

 

Seriously? Half the stations won't know what end the engine is on.

What's a smog check?

 

Exactly. Last year the guy used a mirror on a stick to look for my cats. He looked under the middle of the car under my seat and seemed satisfied that I had proper cats. Doofus.

 

True. Sometimes they look for cats that don't exist yet pass anyway

 

Are fester III's that loud and think they would pass?

 

not an issue for me 3X

 

hey you, shutup!

 

The guy I take mine to has me run it on the rollers. He gets so nervous he never even looks underneath. I don't think they care about muffler mods anyway.

 

My guy was about to do this and then I reminded him the car was 4X-oops !
These guys are just robots pushing cars down the line