ok its an MR2 turbo that runs an HKS EVC III boost controller.

it seems to have this annoying habit of often not HOLDING the set boost correctly.

it i set the EVC to 10psi, most of the time it will spike at 12ish (offset set to 100%) drop to 10 and hold 10 perfect all the way.

otehr times it'll go between 9 and 11 like once a second and you can hear the thing going "whooshwhooshwhoosh". seems most noticeable in the higher gears.


also it seems to overboost too much in 5th when under load. if i set the OFSET to 75% (what pon had it on) it'll hit the overboost every time in 5th. if i drop it to 100% it will do it some of the time.

i've tried setting it to 115% for the time being, but that makes it less punchy in the lower gears as it doesnt come in and spike as hard.

any thoughts lads? i was gonna get it set up by MSD yesterday but i have had to postpone till the 31st


oh, and one more, the engine management light keeps coming on (goes off after ignition cycle) but fault code reader shows no stored faults! grrr. dont thikn the fault is overboost related tho as its come on when cruising as well as when givign it beans