Tuning my modded GSX

[green_GST]

So I traded my 1997 GST for this 1990 GSX.
The problem I'm having includes busting up at when boosting. The wideband reads 14 (give or take a tenth) when this happens. When I'm just idling or holding a steady RPM the wideband reads 17-ish. The old spark plugs were a little white, so I'm guessing it's running lean.

Here's a mod list:
14B
HKS SSQV (Recirculated)
FMIC
3’’ TBE w/ Megan Racing Muffler (No Cat)
2g Exhaust Manifold
2g O2 Housing
Web Cams Street Grind Cams 546/547
Unorthodox Racing Cam Gears
Hard Intake Pipe w/ 2g MAS

Fuel:
AEM UEGO Wideband
PTE 680’s
Walbro 255 High Pressure
Aeromotive AFPR
SAFC2

Other:
DSMChips.com Stage 3 Chip
Spec Stage 3 Clutch
Greddy Profec B Spec 2
Prothane Motor Mounts
No Balance Shafts

Any ideas? Also, does apexi have a downloadable instruction manual for the SAFC2? I don't want to mess around with it, as I'm not familiar with them.

Thanks for any help!

 

[kahl23]

14 is very, very, very lean, you need to add fuel ASAP. Ideal AFR is between 11 and 12 to one. At idle and cruise nothing you do should take effect, as most tuning tools only apply their changes past a certain throttle percentage.

 

[erald01]

Yes Apexi should have a downloadable version on their website.

 

[UnderPrssureDSM]

...does apexi have a downloadable instruction manual for the SAFC2? I don't want to mess around with it, as I'm not familiar with them.

Thanks for any help!

Try here ---> Apexi Super AFC For The Eclipse/EVO

 

[green_GST]

Thanks for all the help!
I got a friend to help me tune it a little tonight and go through the functions. It's running 11-12 under boost and 14-15 just holding a steady rpm. We talked to a friend that's heavy into DSM's and said that's about right. I still have a small boost leak though...