megacrazy

What's necessary is a bit of a moot point. No mods are "necessary" on a car. That being said, I'd probably go with at least 2.5 and maybe 3 if supercharging. 2.25 is pretty much at the top of the possible HP range with this engine. So no, you don't need any more...but you're not getting anything out of it either.

Pufftrees

I don't have a new pic but here is an old one and you can see where the magnaflow magnapacks are put in.



I have 2.5" piping. With the x pipe into straight pipes into quads there was Zero drone... but O god it was snappy loud! With the resonators (magnaflow packs) now I have a very slight drone around 2000 rpm, but the car sounds mean as **** under wot. My friend has a 500bhp 335 and he is terribly envious of the sound.

I have a pretty bad sound clip of the x pipe into straight pipe exhaust (no resonators or mufflers at all, cat/res delete)...


Page two of my thread has some various exhaust setup and my thoughts (when they drone etc). The review of current setup is on last page but no pics.
https://mbworld.org/forums/clk-class...es-clk500.html

Good luck!

kb24forlife24

Nice nice, I'm about to go pick up my car from the shop I'll update you guys soon!

kb24forlife24

Ok I got back from the body shop and they fixed the "tight" gap in the cuts. It's just ever so slightly widened to fit the tips snug. I'm gonna go to Autozone or O
Reilly for a heat shield and I may do the exhaust tomorrow. I'm gonna just tell them to do 2.5". Here are the pics of the redone bumper cut

megacrazy

Wait, that's the final cutout? Are you planning to do a diffuser to cover that up? It's not even symmetrical. One cut has almost straight edges and one is all rounded. Have them clean that up.

Use this stuff for the heat shield. It's pretty good. DEI 050502.

kb24forlife24

Yeah that's the final cutout; I know it's not perfect and one has more rounded edges than the other but it's fine. They said they measured the height off the ground and made the adjustments there, so it's fine to me. I won't be using a diffuser.

kb24forlife24

Yeah that sounds pretty nice but will the cats make a BIG difference in the sound that it produces? I don't wanna mess with the CA pollution laws so that' why I'm not removing it, but it sounds really good even on that bad audio quality haha.

megacrazy

Aight as long as you're happy. Pick up that sticky heat shield stuff. Works great.

Also, yes cats make a difference. I wouldn't mess with them seeing how you're getting very little power out of removing them. More of a headache than anything else.

kb24forlife24

do you think my local store would have it or what I have to purchase it online because I might do the exhaust tomorrow

Pufftrees

Cool you'll be done soon! Leave cats on in cali, nor noticeable i imagine. Can always touch up around bumper with some sand paper and paint if it ever bothers you.

kb24forlife24

Yeah the dust and markings from the body shop is still on there haha. I'll probably clean those later tonight but hopefully I could get it done right tomorrow!

megacrazy

If you got a dremel tool clean that up a little bit. As for the heat shield...just buy it online. Just add it later. Don't worry nothing is gonna melt.

kb24forlife24

I have a dremel laying around in my storage area but where could I fix it? I measure the gap from the top to the bottom and width and everything is almost exactly the same even though the cuts may look different ?

Fatz

You would just need one of the small grinding attachments for the dremel. Set it on low rpm. Use it at an agle of about 45 degrees from the outside to inside surface. Then just smooth the edges.....
You could then tape over the cutout outside surface leaving the edges un-taped and use a black spray paint to lightly coat the edges (you have to lay under teh car). Two light coats, 15-20 minutes apart should do it. Remove the tape.

kb24forlife24

Sounds good, thanks Fatz. If, when the exhaust and the tips get mounted tomorrow, I see that I need to do it I'll definitely use this advice. Hopefully everything goes right tomorrow and everything looks great.

megacrazy

Yup. Also, you can use a piece of paper to cut out a template and then just use it on the other side...see what the difference is.

kb24forlife24

Hey everyone, so I didn't go today because of heavy rainfall in my area due to this storm on the west coast but I sprayed my passenger side with some undercoating and bought some exhaust wrap as well. I am going in the morning to the exhaust shop to have everything put on. But for now here is a picture of the undercoat spray.

kb24forlife24

Okay I did the exhaust today! What they did was chop off everything after the second cats, installed my magnaflow X-pipe and go with two 2.25" piping all the way to the tips. I looked at the 2.5" and that was too big for the clearance and having two 2.5" I think would be too much, so I went with 2.25" all the way. My exhaust shop did a great job at bending the pipe under the sway bar and going through the spare tire. I'll get some revs and flybys recorded later when it stops raining, hopefully tomorrow haha.

kb24forlife24

Pictures Galore!

kb24forlife24

kb24forlife24

kb24forlife24

And here is the finished product itself. Sorry for the dirty car, it is pouring out here..

Fatz

Great job! Those tips look huge.... You got sound to go with them?

Congrats! And look forward to your sound clips......

kb24forlife24

Ok here is a cold start and a fly-by! BTW does the 2.25" vs a 2.5" really make a difference in sound?

megacrazy

Sounds good. Pretty loud . The difference in piping shouldn't make a huge difference. It does make a difference in exhaust flow though.