Croc'ed, thank you for all the updates! It's been a pleasure working with you, thank you for choosing us! :cheers:
Thank you for considering us. Our long tube runners and their larger diameter will encourage midrange to high end power gains. The tubing volume was chosen to to give better usability in the 3k RPM range to 5k, we chose increasing max power gains over a peak power gain as how often will you really be chasing the rev limiter vs spending time all over the RPM range.Rlazer3- I have boiled my header search with cats down to two, Soul and Cargraphics. Both were designed with as long a tube header that fits the 987.1 Cayman. My needs come from autocross where mid RPM torque is king. I also want these to work on the street and pass my State's DEQ requirement of a prob up the exhaust pipe while idling.
My question is did you look at Cargraphics before buying from Soul? They are a few hundred dollors more and made in Germany through Flat6 Motorsports. There is no dyno comparisons, but the pipe of the Cargraphic set is 1 3/4 in vs 2 inch on the Soul. Does that make any difference. I think the Cargraphic pipes are a couple of inches longer before the collector/cat.
Thank you for your kind words, glad to hear you're happy and having great success with them!Apex, this may be best answered by John at Soul Performance or Jon at Flat 6; both generous gentlemen with their information and attention! I am no engineer so I cannot attest to pipe sizes or length. You may be headed toward splitting hairs with one against the others for perfance.
I do care about emissions but living in Florida we do not have testing. Again, the experts will be beater suited to answer.
I went with Soul after many months of watching them introduce into the P world and considering all options for years. After several weeks of driving with the Soul Headers I can tell you the amount of usable power throughout the rev range is much, much better than stock. Mid range is big winding to 6500+ rpm freely and without noticeable flat spots. Real bonus is the drone is all but gone between 2300 and 3000 rpm. Almost completely gone.
The combination of the IPD Plenum, GT3 TB, full exhaust, and flash is massive difference over stock. I stepped through the upgrades one at a time so I saw stepped improvement. Each upgrade was noticeable. Altogether they are smile inducing. I am very happy with my decision with Soul Performance. Cannot see that more $$ will buy any more noticeable power. I would use the difference for another weekend DE and be happy to hear the scream on the track; intoxicating.
Good luck with your decision and be prepared to hear the car as it should be heard.
Thank you for your input and kind words! Ultimately with catless headers and ECU tune you will end up with more power and volume for the same amount of money, but it's an all in situation and like you said - there are some cons. We always invite anyone to reach out to us to discuss their unique goals and consider a mod path and plan to get to a desirable result!I'm currently enjoying the sound and performance of your 987.1 competition headers, and I highly recommend them, but they require a suitable "race" ECU software tune to both prevent a CEL and extract maximum performance. The combined price of these two mods is roughly the same as a pair of these street headers, but unfortunately these mods wouldn't pass inspection in most of the states that require emissions inspections.
These street headers appear to be very well designed and beautifully manufactured. I would strongly considered these as a "plug and play" alternative to my configuration.
Thank you for your input and kind words! Ultimately with catless headers and ECU tune you will end up with more power and volume for the same amount of money, but it's an all in situation and like you said - there are some cons. We always invite anyone to reach out to us to discuss their unique goals and consider a mod path and plan to get to a desirable result!
I have the Soul Performance catted headers with Carnewal exhaust. I run an OFT flash with 2 programs; one more agressive than the other. I have run stock, program 1, and program 2. The sound difference is sunbstantial from one to the other. Most agressive is a wonderful sound that can be modulated with the throttle. Go easy on the throttle and get a nice rumble that is not too loud or aggressive sounding. Give it some gas and it's the sound we are looking for. Program 1 is less loud and deep. Stock is still a great sound and would be considered ideal if you did not hear the other two programs.
As for performance, there is a difference between the flashes, as well. It is noticable between them. I would be shorting myself (in performance) with all the mods if I did not have the flash.
As I posted earlier, the build quality is outstanding and the fitment is spot on. Easy install and especially easy working with Soul.