Hi folks,
I have been lurking and researching for so long on this forum and I finally pulled the trigger and purchased the Delkevic full system with 13.5" Titanium Oval Muffler for my Connie.
The installation was pretty straightforward and I took my time to remove the stock headers to make sure they did not scratch the radiator fins. Removing the upper radiator bolts also helps in providing a couple inches of space to put on the new headers and tighten the screws down. Based on what I have gathered, the bolts need to be tightened to 13ft/Ib but I don't believe anyone could actually fit a torque ranch and properly torque the bolts without taking out the radiator. 
Once everything is done, starting up the Connie with the new exhaust for the first time was like opening up a Christmas present when you were a kid. The sound was so amazing !!! The low rumble during idle and it wakes up when you turn the throttle makes you smile. 
I noticed a small leak at the join at the down pipe and I probably need to apply a sealant and retighten the clamp.
The next thing on the list is to get the ECU flashed. I heard a lot of good words about Ivan's Performance and would give him a call for pricing and how soon the turn around would be if I need to ship the ECU. Any thoughts ?

Cheers !!!

Hi drcookie,

I turn them around the same same that I receive them... standard shipping back to you is FedEx 2nd day air.
Lots of info here: http://www.ivansperformanceproducts.com/ZG1400.htm

Testimonials here: http://www.ivansperformanceproducts.com/ZG1400_testimonials.htm

Contact info here http://www.ivansperformanceproducts.com/contact.htm

Best to call me on the phone during business hours with specific questions (845-268-1212)
I'm happy to speak with you in person, and answer all your questions.

Thanks,

Ivan   

Shoodaben has  a nice mod for the Delkevic to fix the low end torque loss.
https://www.facebook.com/permalink.php?story_fbid=pfbid0FPGUgFRdp5SaXPRT4ctnumpRBMdeAsUhcZU6hu7dciir3Kogr83BEoAzLXSeWAWol&id=100057629379234

Hi folks,
I have been lurking and researching for so long on this forum and I finally pulled the trigger and purchased the Delkevic full system with 13.5" Titanium Oval Muffler for my Connie.
The installation was pretty straightforward and I took my time to remove the stock headers to make sure they did not scratch the radiator fins. Removing the upper radiator bolts also helps in providing a couple inches of space to put on the new headers and tighten the screws down. Based on what I have gathered, the bolts need to be tightened to 13ft/Ib but I don't believe anyone could actually fit a torque ranch and properly torque the bolts without taking out the radiator. 
Once everything is done, starting up the Connie with the new exhaust for the first time was like opening up a Christmas present when you were a kid. The sound was so amazing !!! The low rumble during idle and it wakes up when you turn the throttle makes you smile. 
I noticed a small leak at the join at the down pipe and I probably need to apply a sealant and retighten the clamp.
The next thing on the list is to get the ECU flashed. I heard a lot of good words about Ivan's Performance and would give him a call for pricing and how soon the turn around would be if I need to ship the ECU. Any thoughts ?

Cheers !!!

Apologize for not updating the thread. I did try the mod and it seems to work. I purchased a reducer from O'Reilly and had to do some cutting and sanding. I have to read the instructions several times to get a good picture but overall, It was pretty straight forward.

I could feel the response (torque) was much better between 3k - 4k rpm. I am pretty happy with the mod. It's a very cheap mod.   I am still monitoring the fuel efficiency after the mod to make sure the ECU which I also flashed does not get confused. I have not pushed the rev high enough to tell the difference either. This is my commutter bike. So having a better torque on that range really helps when cruising at highway speed.

Really thanks for sharing the post.

Happy Holidays and Happy Thanksgiving.