Hey guys, i was a member on here but for some reason cant seem to log
back in so made a new account.. anyways that's not the problem.

for some unknown reason since yesterday my coupe has gotten VERY
VERY loud and slow.. i know its not an exhaust problem because the
car is super quiet when ticking over but the moment i floor it, it becomes
very loud like its running throttle bodies.
the inlet manifold isn't loose but the air filter does sound like its sucking in
extra air all the time when idling

any help massively appreciated

thanks, mikey

ps.. its the D15B7 engine with the multipoint injection

 

sorry just realised this could be in the wrong section

 

CELs?

 

theres no engine light showing, if thats what you mean by CEL?