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[essexrsturbo]

ive got a severe power loss with my rs1800i, it wants to stop reving at 4k, it feels like it just holds back hard!, if you hold it long enough to rev through it it starts pulling around 5.5k again. still not wel though!

also even below 4k if i try going full throttle it does the same thing.

i've changed all the obvious stuff like leads, plugs, fuel filter ect..

i was wondering if the CPS or air flow meter could be causing this. or do they just give up all together when they go?

any help would be great