Custom Exhaust causing engine light to go off?

[Where's my car?]

Im going to go to Autozone and get it checked probably on Wednesday so ill get back to you guys with the code. THANKS!!

[Where's my car?]

WOW i got it checked with the obII sensor it came out with four codes
Here they are:
p1126
p1128
p1130
p1133

CAN ANYONE HELP! THANKS !!

[VTCMart]

p1128 and p1130 are O2 Sensor codes if I remember right, just google the others but I think they are also o2 sensor. Check to make sure they are all hooked up, I doubt they would all crap out simultaneously.

Also, you can get a good cheapo OBDII reader from Harbor Freight for $50, worth it!

[shaman1204]

Don't know what year you have but for me the 1128 and 1130 were vacuum leak codes that I think were related to a bad oil filler tube. I have a 2001 base model.

[VTCMart]

Boxster CEL Codes

Looks like most are 02 sensor running rich codes.

[Where's my car?]

I got a custom MagnaFlow Exhaust, so do you think the back pressure is causing the o2 sensors to read errors???