Adams

Yes, Sal Carceller. He takes rather individual care of those who want his chip/injector package. He called the tech doing the work (my car had a couple issues and needed a baseline measurement) and got the data to confirm the right chip.

He was also quite intent on finding how my car did before and after the exhaust swaps, requiring a little head-time and AFR reporting. In the end, the transformation was pretty astounding.

Starts, idling, sound, performance (especially from 3500 and up, wow) and general driving characteristics. Somewhat hard to put into words unless you're familiar with these cars' 'nature' (I have 9 over the years) but the smoothness of power delivery - presumably from heightened atomization and fuel burn - is nothing like a 30+ year old car.

I've no affiliation and whatever other disclaimer I'm supposed to put here. Recommended. You can PM me if you prefer to keep this thread on topic, happy to share.

Archer911

That's great news. He's local and comes to our cars and coffee. I'm going to do this. Thanks very much for the info.

Amber Gramps

I can attest to the massive improvements with pipe, chip, and 4 nozzle injectors. I've not had it on a dyno since I added the Bosch 784's, but just the Pulse Chamber and the Multi-Board chip added 29 RWHP that we were able to duplicate over and over on Bisimoto's dyno. Now with the injectors it's pure insanity back there. Much better driving experience through the entire RPM range. Starts instantly too. I'd go with Sal's set up if I didn't have local sources. (I'm a block from Bisi and I have a local injector tuner)

John@Fabspeed

I'd recommend our Maxflo System as it pairs quite nicely with our Catbypass Pipe. Here are a couple videos with dual and single exit for you to help compare. Just give me a shout and I'd be happy to go over whatever information you need to make an educated decision

PaulCarrera

I went for the M&K cat bypass and the one in two out muffler and the change in the cars performance is very evident in that it just revs so much more easily but is a little on the loud side

Adams

I did a bunch of searching about on this topic, and it seems that the M&K gets the nod for the loudest of the more popular choices. Personal preference of course.

I was stunned that my 'sport' Dansk with Euro pre muffler was quieter than my 1 in 2 out Brumos system (which uses B&B cans).

wildcat077

Actually the real difference between the MK and Fabspeed bypass is the MK's O2 bung picks up both banks as compared to the Fabspeed which senses only one, i installed the MK unit when i had a 3.2 in my 911but i do appreciate the Fabspeed full header system with the 3.6 now.

Both are good units !

John@Fabspeed

Great to hear you're a fan of the RSR kit with the 3.6, just took a drive in our 94 RSR running the same system with a 3.8L the other weekend and still can't the smile off my face. God I love that car lol

Archer911

Is there a PCA discount for your exhaust components?

John@Fabspeed

Sure do, same as I do for Rennlist members. I'll shoot you over a PM to discuss

wildcat077

Hi John,

Yes i do love my Fabspeed exaust , sounds awesome and the fit was nice !
Did you guys ever figure out how to get rid of the droning between 2 and 3 thousand rpm ?
Inserts or small baffles ?
No , i will not cap off one of the exaust tips ...

It was sweet with a helmet on when i was tracking the car but it's doing street duty now and it's annoying on long trips !

Archer911

A drone would not be good. Fabrication time is 5-6 weeks so I'll have to go with another make anyway.

John@Fabspeed

The complete RSR kits were developed for enthusiastically driven cars on and off the track, for tailored sound and performance for the associated higher RPM use. In order to meet those goals we came up with the existing design, and it has been very popular with little to no complaints of resonance in cabin. Therefore we've never had any reason to do further R&D on the system, and nor would we really consider it consider how successful it has been as full system replacement. That being said, now that your goals have changed and it turns out you are sensitive to cabin noise on the longer trips, perhaps it is time to pursue a different exhaust configuration for you. Something more modular like factory style headers, our catbypass pipe (or sport cat) and our dual exit Maxflo system should fit your revised expectations for sound. What are your thoughts?

The RSR kit that wildcat is running is a completely different exhaust design that is a good bit more aggressive than the catbypass and Maxflo system we were chatting about. I don't think I've ever had one complaint of cabin resonance from our standard Catbypass/Maxflo combination in all the time I've been here. It is widely considered the "golden ticket" setup for a primarily street driven car.