Help! Fuel Cut At 4500-5000 Instead Of 7

[Lunnr33]

Hi guys, im having problems with my 33 it has started rev limiting at 4 or 5 gran instead of 7 it doesnt do it all the time tho any

ideas on what could be causing this ?

Thankyou

[Got a Pulsar]

You sure it's Rev Limiting and not R&R?

How much Boost are you pushing?

[mad082]

if it is only when you are going full throttle then start by checking your coil packs and spark plugs. it could just be the common missfire issue. failing that it could be a crank angle sensor issue, or afm issue, as both of those issues can cause a lower than normal rev limiter.

[Lunnr33]

Im running standard boost and it is only when I boot it to the floor,i put irridiun plugs in not long ago,might check the coils