Here's my current setup.

2004 Audi A4 1.8T FrontTrack 5sp manual
APR Stage 1+, TT225 injectors, Forge 007PA DV

I am going to be installing a EuroCode Test pipe w/ cat delete and Neuspeed Cat-back exhaust. This will give me a complete FULL Exhaust.
I am told that APR does a flash to current Stage 1/1+ customers to remove the CEL for when CAT is gone. Anyone know about this?

Think I'll see some real improvements in spool up and power?
I wonder how loud this will be? bearable? hmm.

 

Same question, but can I remove CEL with GIAC chip?

 

It would be best to call or e-mail APR about the test pope question. From everything I've heard, the APR chip does get rid of the CEL. GIAC's does not.

You should see a significant difference in power. Haven't heard anything on the Neuspeed exhaust.

 

Worst case, install a diode on the o2 sensor after the cat, or get a couple plug defoulers to raise it up so it won't throw a code.