hi all. tried changing the restrictor valve on my 2003 sti to get more boost but the ecu spotted it straight away. can you up the boost using an electronic boost controller??? i haven't got anywhere near enough cash to buy a chip and do a re-map! please help, must go faster. cheers

 

can no-one help me with this? should i get an apexi avc-r boost controller and an s-afc2??

 

if you set it up for too much you are likely to get fuel cut and/or det problems.

get a dawes if you must tweak the boost..
Far simpler, and probably a better idea if you want more boost on the cheap with no other real supporting mods... (fuelling etc..)

It's not 'the law' to adjust to the fuelling to compensate- but I'd say its sheer common sense. Some say '**** it' and just bung a dawes on and crank it up- and they are lucky no probs.. others have found out the hard way. its a gamble.

just dont come crying to us when you set the dawes too high and you melt a piston etc..