Performance lost on aftermarket exhaust?

[rp17]

I don't know Trimmer. Sound is definately a plus. But eventhough it sounds faster, it seems like it doesn't quite pickup speed til later on at some point. Did some searches and seems like removing seconday cats helped for 986 owners. I'm in a 987 so that won't help me. Does adding a exhaust change the dyno curve?

After fitting the exhaust, me and brother travelling to a gas station. At a stop light, brother in G35 decides to take off unannounced to me, when it turned green. I had no clue, so I gave chase. (I know I know not good practice) He had a jump on me but his car kept pulling and pulling until I got to maybe 3rd gear. At that point it started gaining quickly before I shut it down. Don't know if we raced before but I've never had any other car pull on me like that pre exhaust. My car is way lighter than his too. Is this the top end gain and mid range lost? Not sure if I'm liking that.

Is this the reason why others add a tune?

[trimer]

What exhaust did you put on?

[rp17]

Originally Posted by trimer

What exhaust did you put on?

Fabspeed Race Exhaust.

[trimer]

Originally Posted by rp17

Fabspeed Race Exhaust.

I would suspect you aren't losing anything. That is a nice exhaust. But fabspeed site should have all that data for sure. I was going to do the race exhaust and talked to them several times about it.

[rp17]

Originally Posted by trimer

I would suspect you aren't losing anything. That is a nice exhaust. But fabspeed site should have all that data for sure. I was going to do the race exhaust and talked to them several times about it.

Trimmer it is a nice exhaust. And in there defense, I didn't buy there whole package. And also didn't buy it new so don't know how much questions they would tolerate from me.

[Nine8Six]

Originally Posted by rp17

Is this the reason why others add a tune?

RP - a visit to your local "Porsche performance" tuner is required. Not a job for the average indy who specialize in changing genuine parts (type dude). I believe you guys have a few Porsche "performance" shops scattered across the usa so I am not too worried for your somehow lost hp... I'm worried about your wallet tho :/

Although those dynamic maps/curves are, dynamic, they most likely need tweaking for 'some' of the conditions you'd like your car to run best for. Those incl aftermarket performance exhaust systems

[rp17]

Originally Posted by Nine8Six

RP - a visit to your local "Porsche performance" tuner is required. :/

Although those dynamic maps/curves are, dynamic, they most likely need tweaking for 'some' of the conditions you'd like your car to run best for. Those incl aftermarket performance exhaust systems

986, I think your right. I don't even think I ever mentioned to anyone about the Hp gains. Didn't do it for that. Now I need a trottle body and a tune? Tried my best not to go down this route but it looks like its something I will continue to fight off right now.


Jake, it is shinny with a hint of bronze, but not expensive for me. Like I said to Trimmer, I bought used from a forum member. I can clearly understand from your stand point when adding a after market exhaust to your engine and getting things that are not ordinary with what comes with the stock setup. Glad to know that Porshe put some time into making this exhaust unlike the...... well you know.

Still have my stock exhaust sitting in the garage. Don't think I can go back to it though but will hold onto it. Sorry to sound like a complainer because I do like it. Innitially didn't name my exhaust because I didn't want to come across bashing them. The race exhaust sound is incredible. I can actually hear my exhaust now just cruising around with the top down. Never saw the big idea of videos going under bridges but when I do, it freaks people out including me the first time.

So the message to other who want a louder sound, you may not even notice what I've noticed. I'm suprised actually how good I know my car now. (butt dyno was on it) But like Jake said they may not be as good as the factory performance wise. I need to do some more reading. Thanks everyone.