minging

hi can anyone help i have a 97 p reg catalunya it has now stared to miss or hold back like rev limiter is cutting in at 4,000 rpm in 4th an 5th gears but its only now an again as far as i no the car is standard apart from a d/valve ive just fitted a magnex cat back exhaust but it was doing this before any ideas please many thanks

kildare scooby

could e your plugs my car was the same when i got it it was really bad at 4500 rpm it could be your maf either

minging

thought about plugs an coil pack an the maf seems to be workin as it stops when i un plug it but will start with plugs an go from there

minging

gonna try new plugs is there a set you have to have or can anyone suggest the best ones to get