Heat exchanger and exhaust advice needed

[wullie]

Hello all,

this year I will take my 75 911s back to Germany and I want to update my performance/reduce the engine temperature.

So I was looking to get some new heat exchangers and muffler.

But I really got lost in all the different offers, like Dansk, SSI,..

What would be your recommendation? I am looking for a 'not too loud' system but also want to get the 12-18 hp performance increase. Stainless steel would be nice as well.

BTW: as anyone a set of heat exchangers and muffer for sale? ;-)
What would be a good deal and where to get?

Regards,

wullie

[rfuerst911sc]

My opinion is the SSI's are the way to go. They are stainless steel and provide a performance increase in horsepower,torque and heat output. They will basically last a lifetime. Shop around if buying new or keep your eye out for used, I saw recently a pair for $675.00. In regards to mufflers there are lots of options, I like my M+K stainless 2 in 2 out, it's 321 stainless,light and sounds great but it is loud.

[Joeaksa]

You face a bigger problem in that you will have to have the car inspected by TUV when its registered in Germany. They will insist that you have paperwork approving any parts on the car that are not from the Porsche factory. As well any parts from Porsche must be approved for your year and model car, otherwise they are not allowed.

For instance, if you want to put a rear spoiler on the car, its covered under a approval from Porsche that documents that you can do this on other models, but must be accompanied with a certain front spoiler. They are very strict on what you can and cannot do and if its not been documented you will not be allowed any leeway.

Something as silly as better competition seat belts over here are not allowed in Germany unless they have the TUV approval and tag on the belt. The belts might be legal in a Formula One car but they could care less, unless its approved for that car, you are out of luck and will not be allowed to drive the car until its corrected.

For this reason I would be careful buying something like SSI's when you can get Danske, which are made in Europe and might be approved. You have time so email Danske and ask them if they do have TUV approval before spending any money. SSI's may be approved but you would need to check on that as well.

Same thing with all aftermarket parts on the car. Steering wheel, road wheels, lights and so on all have to be either from Porsche AND on the approved list, or have to have TUV approval and you then have to get them listed on the Brief for your car. It can be a long road... been there and done that.

Also, make sure that any and all rust is gone from the car, and that its well undercoated and ready for winter there before shipping it over. As well, totally empty the car before shipping. I have done it many times and anything loose in the car has been stolen on the ship going over unless you put it in a container and lock it before it goes on the boat.

JoeA

[mb911]

Wow Joe very good suggestions never even thought about that.

And to note the newer series M&Ks are much more docile

[Joeaksa]

Ben,

I lived there for over 10 years. At first was with the military system so almost anything went on the cars. Then transferred to the German system and everything had to be approved and it was a real headache.

Even if a wheel or spoiler is from the factory, it must be on the approved list and then stamped and entered in the Brief (car registration paperwork) before you can drive it. Should it be mounted on your car, even something as simple as a set of fog or driving lights, and not in the Brief, you are illegal and they are tough about it.

The rust thing is that they take a welders hammer, the one with a small pick on it and tap on the entire underneath of the body, just looking for rust. If they find it, it must be repaired before the car is licensed.

Its real tough over there, especially for older cars. Better that Wullie knows now than finds out the hard way when trying to register his car over there with a SSI exhaust and US muffler, only to find out that its may be illegal in Germany!

Joe A

[mb911]

very interesting Not sure igf I had a CGT I would want them checking for rust LOL!

[wullie]

Hi Joe,

you are right.
My luck is that the car is older then 30 years, that means it will qualify to be a historic car. Therefore are the restrictions not that thight.
To be sure I checked some other forums in Germany. They said that they got the SSI TUV qualified. But it would be obvious to come in with 'loud' mufflers, so a stock muffler would be necessary..

Regards,

wullie

[wullie]

Hello again,

beside the legal discussion I am asking you for your technical advise..

Regards,

wullie

[aigel]

SSI - especially because the rust can't get them!

I would recommend the dansk sport muffler for here, but in Germany you likely are better off with their stock muffler for above stated reasons.

George