lumpy idle gone since mapping ? ? ?

[midge]

right when i left my car at nicks it had a lumpy idle, the sound we all love, when i picked it up the exhaust was blowing REALY bad between the de-cat and middle section so you couldnt here if it was lumpy or not, today i fixed the blowing exhaust (although still blowing a small amount at the back) and it appears i have absolutely no lumpyness at all, im just wondering why this is? he did mention my lambda sensor was broken/on its way out...

ideas anyone?

 

[edde]

He could have adjusted the timing a bit or mapped it right.

 

[midge]

the amount of overlap the casm have it shouldnt be all gone.. im confused.

 

[Sheila’s’ Wheels’]

Maybe he took your cams out, sold them to someone else, and then fitted standard ones???