Hi,

Got a problem with my 2wd Saff Cos, when accelerating hard past about 5.5k revs the car seems to hesitate and not want to pull cleanly. I'm told it also kicks out some big flames whilst doing this & my tailpipe is really thick with soot. I'm running it on Optimax which seems to help a bit rather than normal Super unleaded but am concerned that it may be dong some damage.

Has anyone got any suggestions as to what could be causing it? Poor map? Failed sensor? Plugs or leads? etc.

The engine is stage 1 tuned with an Ahmed Bayjoo chip, filter & exhaust. I'm not 100% sure either what actuator the car is running as the sticker has been rubbed off, what is the easiest way to find out?

Cheers,

Gareth

 

Plugs mate.

 

get it checked by a reputable specialist asap before something goes bang.
proberbly something simple.

 

my 3dr was doing the same and it turned out to be the phase sensor

 

What plugs are you running? Stop reving it hard until its sorted or it will pop

 

i had exactly the same prob with my 2wd saph cossie. turned out the plug gaps were set too big and the spark was being blown out everytime it came on boost

 

it souds like plugs i always use woodford motorsport for these ask for 12pp8 plugs hope this helps