meter drop ca18det

Hey guys. Straight forward,
when i hit my gas and let go or brake, it drops below 1000, around half. On idle i set it to 1200.
Any thoughts? Thanks

you got a dump valve?

yes sir got a hks sqv.

if you got standard management that still runs off the AFM then theres your problem see what happen is the ecu accounts for the air passed that your dump valve lets out thus it gives more fuel which is not required more fuel and not the correct amount of air resulting in a rev drop

thanks. so which do you suggest, upgrade Afm or upgrade intercooler? or maybe i would check the afm first, clean it and see where it goes.

wont make a difference you can ether use a recirculating dump valve or put a stand alone ecu in