Right after about 200 miles now, its not gone. TGM said the installation of the JRSC appears correct but the vacuum hose on the intake manifold, the one you get for the RBC to fit kept on collapsing when off the throttle and didn't look like they used my old RBC hose. I and Tom believed that this could be the root to my problem as when i come off the throttle and press the clutch pedal at any rev's in any gear, it cause the engine rev's to intermittently drop/cause engine to stall.
Ive gone and got a silicone vacuum to replace it and the rev dropping has not gone although it has yet to cause the engine to stall (maybe an improvement). so with the installation correct and the only thing to have changed since i handed my car to CPL being the map, the car has been booked in with Eurospec in February for Romain to work his magic as he did when i was N/A and to have the modded OEM tensioner fitted as I'm thinking my car has begun to have belt slip as it has on a couple of occasions bunny hopped and struggled to get power through but when lifting off and re-applying the power, it stops.
I am hoping that it will be the simple thing of just the map.
Kenny did have a chat with Tom after i had left and it was discussed that the map felt lumpy in the low rev's under 3500rpm...could that have a bearing on my issue? who knows as its only intermittent...