Schnell Headers on 986 with Stock Exhaust - 986 Forum - The Community for Porsche Boxster & Cayman Owners

panameras · 08-07-2007, 09:05 AM

Quote:

Originally Posted by Adam

Panameras, the stock system on 200-2004 boxsters looks like the one on the left.
It looks like the manifolds are missing in the pic you provided!! Maybe it's just the angle....take a pic of the underside of the engine!!

Adam, is that the Fabspeed muffler? how does it sound any drone?

Adam · 08-07-2007, 10:09 AM

Quote:

Originally Posted by panameras

Adam, is that the Fabspeed muffler? how does it sound any drone?

I don't have first hand experience, but 1 or 2 guys on here have used the newer fabspeed muffler and said there was drone in the 2-3k rpm range. It not GHL bad but it is more than stock. I am considering using the Fabspeed header/cat combo with the main cat delete bypass pipes with the stock muffler. The stock muffler flows well according to the experts and isn't too loud. I think this combo would give a nice bump in power and sound without being over bearing.

noone986s · 08-07-2007, 12:53 PM

This is what I have installed, but the 3.2 versions. I have a pic of the old ones that I need to download from my phone. They have no cat.

http://www.cargraphic.co.uk/index.php?/s,6,7,18,714,2436/&start=12

The second ones you posted look good, but be aware that most of the bolts snapped and I had to helicoil them.

Will post photo later of the old one.

I am trying to choose a silencer that is not too noisy

panameras · 08-07-2007, 01:37 PM

Quote:

Originally Posted by noone986s

This is what I have installed, but the 3.2 versions. I have a pic of the old ones that I need to download from my phone. They have no cat.

http://www.cargraphic.co.uk/index.php?/s,6,7,18,714,2436/&start=12

The second ones you posted look good, but be aware that most of the bolts snapped and I had to helicoil them.

Will post photo later of the old one.

I am trying to choose a silencer that is not too noisy

thats some expensive and quality hardware *drool* excellent choice!

as for the silencer have you considered modifying your current one? like this:http://www.ppbb.com/boards/ppbbphp/showflat.php?Cat=&Board=ARCHIVES&Number=1067764&page=8&view=collapsed&sb=5&o=7&fpart=1

noone986s · 08-07-2007, 01:42 PM

Yeah I have seen that before, a bit too loud I think, I need to be under 98db for most of the trackdays here.

edevlin · 08-07-2007, 02:13 PM

As I said in a previous post, I picked up about 6 hp with headers, and high-flow cats. I got another 4 hp or so with the addition of a TTP cold air intake. That gives only a 10 hp or so increase on my 2000 2.7L boxster with modding the intake and exhaust systems.

That increase is significantly less than many of the claims that are made for such mods, but I think those are pretty realistic numbers for improvements of the 2.7L engine. As i understand it, both the 2.5L and 3.2L engines respond better with more hp with some of these same mods.

When I chipped the car, I picked up a little over 12 additional hp on the dyno. That means that depending on the dyno run, I am doing these days, I am only getting 20-25 hp over stock than stock with a full-on intake, exhaust and chip mod of the car (about 205 hp at the wheels). Again, much less than some of the claims for these mods. That being said, the car runs great, it is quite responsive and I love the sound of the exhaust, but those additional horses were not cheap....

Ed

rule1 · 08-07-2007, 03:23 PM

go to maxpeeds ebay store and where he is selling the header and muffler combo, My dyno results are there.

panameras · 08-08-2007, 11:26 AM

Quote:

Originally Posted by edevlin

That increase is significantly less than many of the claims that are made for such mods, but I think those are pretty realistic numbers for improvements of the 2.7L engine. As i understand it, both the 2.5L and 3.2L engines respond better with more hp with some of these same mods.

Thats true, its understandable that Porsche purposely restrained the power output of the 3.2 Boxster so it doesnt intimidate the 3.4 Carrera. Where as the 2.7 was tuned to its near maximum to keep up with the competition (Z4 3.0, SLK350 etc..)

Cloudsurfer · 08-08-2007, 08:04 PM

I have the new FabSpeed exhaust, and unfortunately yes, it does drone in the 2-3k range. I am still on stock headers, but am looking for ideas there. The FabSpeed headers are gorgeous and I am sure will not cause any CEL related issues, but damn are they pricey.

Heres my latest idea for a perfect exhaust for these cars: High flow catted headers (a la FabSpeed) to guarantee improved flow and scavenging, yet also no CEL related issues. Secondary cat deletes. Now, heres where I would like to think I'm onto something: Stock 03 muffler, but with RPM activated dump valves (almost like turbo wastegates) BEFORE the muffler section, that begin to open at say, 3500 RPM, and are fully open by say, 4500 RPM. With this design you have a perfectly quiet car for normal driving and cruising, with no resonance issues, yet when you get on the power, as the RPMs rise and you get into the meat of the power curve, you get a very free flowing exhaust, that will sound glorious as well.

Anyone else think this could hold some promise? I have a very qualified shop here that could do the work on designing a system like this, and we could have a prototype I'd be happy to test.

Patrick

Adam · 08-09-2007, 04:23 AM

Quote:

Originally Posted by bmwm750

I have the new FabSpeed exhaust, and unfortunately yes, it does drone in the 2-3k range. I am still on stock headers, but am looking for ideas there. The FabSpeed headers are gorgeous and I am sure will not cause any CEL related issues, but damn are they pricey.

Heres my latest idea for a perfect exhaust for these cars: High flow catted headers (a la FabSpeed) to guarantee improved flow and scavenging, yet also no CEL related issues. Secondary cat deletes. Now, heres where I would like to think I'm onto something: Stock 03 muffler, but with RPM activated dump valves (almost like turbo wastegates) BEFORE the muffler section, that begin to open at say, 3500 RPM, and are fully open by say, 4500 RPM. With this design you have a perfectly quiet car for normal driving and cruising, with no resonance issues, yet when you get on the power, as the RPMs rise and you get into the meat of the power curve, you get a very free flowing exhaust, that will sound glorious as well.

Anyone else think this could hold some promise? I have a very qualified shop here that could do the work on designing a system like this, and we could have a prototype I'd be happy to test.

Patrick

Bogg tried some valves like that on his stock muffler and the results...well lets just say some people liked it and some didn't. It didn't sound very "exotic." I'll try to find the videos he made. I do like the idea of using the stock muffler though with headers and bypass pipes. I think that would make a good combo.

http://www.youtube.com/watch?v=08-uX9z_Rg4

http://www.youtube.com/watch?v=vpXhUN6-vsk&mode=related&search=

panameras · 08-16-2007, 11:29 AM

Now can any forum moderators change the title of this thread to Maxspeed headers on 986..... instead of schnell?

rule1 · 08-16-2007, 02:40 PM

I have had these same headers on since the first of july and have still not had a CEL, on my 2000.

panameras · 08-07-2007, 01:55 PM

these maxspeed headers are not bad all. stainless steel, nice welds, neat merge collector. quite a bargain too at $575. what do you all think?

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=320143166771&fromMakeTrack=true&ssPageName=VIP:watchlink:middle:us

panameras · 08-07-2007, 01:32 PM

Quote:

Originally Posted by Adam

I don't have first hand experience, but 1 or 2 guys on here have used the newer fabspeed muffler and said there was drone in the 2-3k rpm range. It not GHL bad but it is more than stock. I am considering using the Fabspeed header/cat combo with the main cat delete bypass pipes with the stock muffler. The stock muffler flows well according to the experts and isn't too loud. I think this combo would give a nice bump in power and sound without being over bearing.

good to know stock muffler is up to the job. your combo sounds good, actually would be the most ideal setup IMO. hardly any aftermarket mufflers are drone-free, except maybe milltek so I have heard.

panameras · 08-16-2007, 11:14 AM

Received the headers today :dance: quite excited as you can imagine! It was paid last friday and they arrived here nicely packed (including gaskets and studs) on Wednesday. Not bad for delivering half way across the globe! Abosultely happy with their service. Going to put them on the car tomorrow. Will record some sound files for before and after. For the mean time here are some pictures that I took this afternoon