Why not try -----

[Timolgra]

I have a Remus decat and open can. Rt tubes. K&n and I've fitted a 3.5 bar pressure reg. what's the best next step for improved long term engine performance. Cheers

http://www.ukgser.com/forums/showthread.php?374172-JohnGS1100-Tuning-Chip

Additionally I feel a decat and open pipe produces less power, seems better with a decat and standard pipe, perhaps this engine benefits from some back pressure and a K&N makes no difference at all

 

[daverimm19]

Not designed to run with 3.5 bar fpr apparently. Worried about adaption as roger been describing

 

[(RIP) Kaister]

my last 1100 was Laser pipe with decat, shortened inlet tubes and a modified airbox inlet trumpet.

sounded nice and had a bit more power.

latest 1100 is a std pipe - non cat as std, no lambda - seems to go about the same