hey all. sorry if this a dumb question. i have a 93 coupe with a 2001 gsr motor. has turbo set up at 7 psi. as soon as boost hits 0 vac and 0 boost like right before it goes into boost the car leans out and has no power and backfires and boggs and such under boost. i was wondering if the vafc settings are messed up or if it could be fuel pump or filter clogged. i have no idea. does anybody know what the correct setting should be on the vafc for this motor and turbo set up? it ran fine before and out of nowhere it started leaning out under boost. it possible to make it run richer with the vafc? i realy dont wanna blow a motor thats not paid off! thank you

 

Ditch the VAFC and get something to properly tune the engine, or you WILL blow it up.

 

Step 1: Remove the afc.
Step 2: Have your obd1 chipped ecu chipped & tuned on an obd1 engine management system such as Hondata, eCtune, Neptune etc.
Step 3: Be happy & enjoy :-)

 

thanks guys. im going to get a tune and get rid of the fmu and vafc lol ik ik i didnt put that set up on =/ fixed the lean problem tho, clogged fuel filter lol. thanks guys

 

/agreed! Ditch the vafc. ectune or Crome in my opinion, Neptune is not so bad in cost, however, hondata is very very expensive.

 

ya im getting 450 injectors, crome, vafc gone, fmu gone everything re-wired and dyno for $450....seems fare to me =]

 

they are gonna dyno tune it? Yea, thats a deal if your getting it tuned as well.

 

step 3 here i come! lol thanks for the help guys!