Claire, The timing should be set to 11 Deg or there abouts. As the metering head, fueling curve and settings have been adjusted this is were the engine produces the best performance. If you have turned it back to 13 then you have started to undo all the work of the stage I upgrade !!! If you have any questions as to what was done in the Stage I upgrade then please ask as I'll happily tell you. Also As I understand it the CPR line was a pre-production item fitted to you car by DMUK for testing. I'd like to point out that the type of house that was used has been replaced for a much more durable kind when they went into production. As for the popping and banging this is normal for a stage I upgrade. Please remember that your exhaust does have a hole in the the back of it that you tried to repair with exhaust paste that has come off. This will be allowing air into the back box and will help any unburnt fuel ignight !!! Dan DMCL ------------------------ Yahoo! Groups Sponsor --------------------~--> Check out the new improvements in Yahoo! Groups email. http://us.click.yahoo.com/6pRQfA/fOaOAA/yQLSAA/HliolB/TM --------------------------------------------------------------------~-> DOC UK Website: www.deloreans.co.uk Unsubscribe: doc-uk-unsubscribe@xxxxxxxxxxxxxxx ** Unless otherwise stated, all messages posted to the group are assumed public and may be printed in the club magazine ** Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/doc-uk/ <*> To unsubscribe from this group, send an email to: doc-uk-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/