Vauxhall Tigra sound ruff when start car up

Does that car even have a carb ? I thought it was a throttle body which I would clean . I would also check , clean or replace MAF if needed and check for any vacuum leaks

Its the 1.8 sport i have cleaned what I thought was a carb lol top of manifold but think its egr and dont think it will be the MAF as its pretty new .car was running fine and then I took air box or with all pipes to the egr then put it all back on properly and then 1 houre down line its doing this .so not realy got a clue .

The MAF can get dirt on it at any time , new or not . If it's been replaced , some were cheap , crap imports which were useless compared to OEM . Check you haven't left or knocked any off hoses when removing air box , you might hear a hissing .

Checked its all .when I put my hand over the MAF its sorts the engine out back to normal so what could that be ? Sorry for pestering you

No issing from any pipes aswell .so carnt understand why .but all I no is when I put my hand and cover the MAF its sorting it out for some reason then after 15 to 20minz it statrs back up again

Try disconnecting the MAF when engine running , if no change in running , MAF knackered