I got my Flowmaster 40 SIDO last fall... Well another guy got the same thing in my town from the same place and its hella louder than mine. Im not sure if mine is messed up or what. I did take the liberty to look to make sure the muffler said flowmaster on it. Is it supposed to be a more mellow tone or what?? Anything I can do to make it louder?
All Rangers have CA emissions from 2001 on. The CAT's are "auxilliary" mufflers and my Flowmaster 40 (old school, not the new design) isn't loud either.
It's normal. The only way around it is to remove CAT's and that's tricky and potentially illegal. I'm modifying my CA emissions system back to Federal standards but it remains to be seen if that will fly or if I'll have to go back.
To get back to Federal, get a 2000 front pipe (if there is one for a SOHC for that year) and a 2000 CAT (the 2 piece CAT on the pipe between the y-pipe and muffler). That 2000 CAT relocates your downstream O2 sensor to AFTER the second CAT. If you check your current system you'll see it's between those two CAT's.
That will give you Federal emissions, and make your PCM happy while elminating all those small CAT's on the y-pipe -- but I don't think it'll be that much louder.
Beyond what I just mentioned (which may still be illegal) the alternative is fully illegal and probably irresponsible: complete elimination of the CAT's.
John Griggs -- Kennett Square, PA
2002 Ranger 4x4, SAS'd, with too many other mods...
You sure its a 40 series? And not a 50 series or perhaps the 60 series? Usually the 40 series is loud. Wether it be the delta flow or the regular 40, which are basically the same except the delta 40 is quieter inside the cab, but same outside as the original.
Id check and see if it really is a 40 series. It should say by the inlet side of the pipe a model number. You can check on flowmasters site and see which muffler you have by comparing the model numbers. Do you have the fake duals? or just a single out?
Somethings fishy here. I've had 3 different Flowmasters on my truck.......all were 40 series, but different mufflers(Original 40, Super 40, Delta 40). And they are all pretty loud....not loud, but beefy sounding and loud.
Are you positive you have a 40?? On the inlet side of the muffler, there's a part number laser etched into the case. Post that up and i'll look it up for you.
Pipe diameter, tail pipe location, exit location, where the muffler is mounted, what muffler you run.... all those are variables that will change the soundand loudness of the muffler.
a cat fine for us is like 2grand, and we arent aloud to touch our exhust to make it louder or change it from stock. aparently they changed the law recently and made it illegal to even put an aftermarket muffler on thats the same tone as stock. also if you notice in there it states that you cant make any harsh or objectable noises with your automobile, so burnouts, blow off valves, open dumps on turbos, the wind of a supercharger, ext ext...
and they aparently copied the street racing laws from cali over to MA and we get the same fines as them now if we get cought racing or spectating..
i think florida is the only place that dosent have laws like this.. no emissions, and no safty inspection..
2004 Silver XLT 4X4
4.0L SOHC | 4.10's Open | 5spd Automatic
3" PA Body Lift| 265/75R16 BFG A/T's | James Duff Traction Bars
You just have to have people in the know up here. My 94 F-150 has no cats and no mufflers. It's loud but passes inspection. And as long as it does there is noting the po-po's can do about it. (disclaimer: obviously I dont go around beating the hell out of it and not shifting til 6K either.)
if u do not have inspection where u live, maybe try cuttin off the last cat I am going to try this when i get my super 40 if it isnt loud enough 4 cats is rediculous and cutting off the last one may not change alot but it can only get better might get a little louder idk we will c