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Discussion Starter #1
Hi could some one please help my car won't Rev past 3k and really struggles to get there i have changed the coils plugs and lambda sensor ?

Thank you
 

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at least post back the obd2 codes.

you can get them read with any scanner.

also, why did you change the coils, plugs, and lambda sensor?
 

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Discussion Starter #3
Hi there is was lambda 1 before the cat, I changed all other parts to try and cure the problem as it has no power and won't Rev above 3k rpm

Thanks
 

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TURBO or NOT?
An issue like this is usually a boost issue. If you have no leaks in tubing after
the turbo, then it's usually and over-boost condition, and power has to be
reduced to save the motor. Over-boost can be caused by a failing diverter
or blow-off valve. This isn't a condition fixed by plugs, coil packs, and
in most cases not even an 02 Sensor...

If it is not a turbo, then it changes the entire reasoning...
 
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