Raspy Exhaust (no cats), need advice

[986rgt]

How many miles on the hi flo cats? I might be willing to trade you. I have factory cats, but would love hi flo ones for my setup.

Steve

[jaykay]

Has anyone done the Crios mod and bypass pipes? I would think that this might give a deeper sound on an S at least (main cats are in the headers.

I was going to do this but really do not want the er....em dare I say ricer tone..

I am after a deeper flat six grunt...

[Cloudsurfer]

Originally Posted by jaykay

Has anyone done the Crios mod and bypass pipes? I would think that this might give a deeper sound on an S at least (main cats are in the headers.

I was going to do this but really do not want the er....em dare I say ricer tone..

I am after a deeper flat six grunt...

Only the 2.5 cars have one set of cats, any 2.7 or 3.2 has 2 pre-cats in the header, and two secondary cats in the mid pipe.

[23109VC]

that spec boxster exhaust sounds great.

I also think the vid online of the NHP system sounds pretty good too.

I have a pedro style bypass exhaus ton mine, and it sounds nicer than stock, but it is .. to me... a tad raspy and not quite deep enough. I think to get the sound you're looking for - it's more the MUFFLER and not the cats. you need a diffeent muffler.

i'd suggest looking at a set of headers with hiflow cats - and then add a set of bypass pipes and new ehxaust. the downside is that there's NO cheap way to do this...

Fabspeeds system will set you back a LOT. Even the NHP system, which is far cheaper, is still probably about $2000 for that setup....

when you figure that the average 2.5L boxster is only worth $10k or so - it's a LOT to then spend 20% of the cars value on an exhaust......

it's expensive to be cool.....

[Lobo1186]

well since the OP has no cats already since there are only two in the midpipes and he has removed them it is definitely in the muffler. change the muffler... change the sound. I recommend looking at spec boxster setups online because most if not all have testpipes in them (no cats) and some form of muffler. the video sounds great however, you need to buy the midpipes from them to use their muffler.

hi flow cats in my mind are a waste of time and money. so very pricey and you dont lose much weight (if any) and you gain minimal power (if any) at least with a cat bypass you may not gain or lose any power but at least you lose weight. and with this spec boxster system or with an aftermarket muffler that is even MORE weight lost and a better sound.

[jaykay]

Sounds pretty good to me ........any drone? Yes, of course I wouldn't be able to get this on my 3.2.......I am after suggestions that are streetable for the 3.2.

[Lobo1186]

actually, you could get this system because it will fit just the same... except you will have the header cats on your 3.2 so it will probably be quieter by a little bit.


as far as drone... the louder you go the drone will be there they are very often hand in hand. except maybe with some of the highest end of systems.

here is a clip of my exhaust 2.7 still has header cats on but 40 bux for catless midpipe.

but again muffler has ALOT to do with the sound.

Ive raced with a fellow boxster owner in my area (autocross) and he has i think fabspeed bypass with the PSE... to be honest it isnt that much louder than stock... BUT with mine the deluboz muffler already made it louder but the cat delete made it in my opinion great.

[Dragonwind]

Originally Posted by 986rgt

How many miles on the hi flo cats? I might be willing to trade you. I have factory cats, but would love hi flo ones for my setup.

Steve

PM sent. Thanks,
Chris

[Gent]

If you are hearing rattle noises, I think an earlier poster was correct - your old mufflers are more likely the source of the offensive noise. Old cats and old mufflers can start to come apart internally producing all kinds of rpm dependant noise.

[Dragonwind]

This isn't a rattle it is a rasp. It is hard to describe but I've had rattles before and this is an exhaust noise. I've tried two different mufflers in case that was the issue but it wasn't. The noise only was present after I put the cats on and is most noticable with the stock muffler. I could just get the Maxspeed muffler but I really like having no drone.
Chris

[j.fro]

Replacing the stock exhaust manifolds with a set of headers may deepen the sound a bit.
Headers dramatically deppened the tone on my car, however, I have a 2000 S, and had the cats on the stockers.

[crios]

Sorry guys, it's all a waste of money.....drill the holes and spend the money on some other mods.

[jaykay]

Crios,

Where did you get your 550 Spyder grill kit? I am make some radiator and side grills and would like to know the best way to do it........yes I may bite the bullet and start drilling