Installed an 034 high flow cat christmas present last week. Just with the cat spool up was noticeably quicker, exhaust note a bit deeper, and power seemed improved. Cat removal was more of a hassle than I expected. Ended up pulling the cat and downpipe out rather than just the cat due to flaking apart bolts on the cat/downpipe connection and a very hard to remove lower oxygen sensor. Once out, cut the cat/downpipe bolts off with a dremel and heated up the oxygen sensor bung to free it up.
Installed an APR HPFP last weekend. Bought it rebuilt from USP. That rubber clamp on fuel line was a challenge to get off and back on, all else was smooth.
Now it is time for stage 2 software. Have Eurodyne stage 1 and can upgrade to stage 2 locally. Anyone running this? I have searched and found lots of Maestro threads, but none about Eurodyne Stage 2. Any feedback?
Thanks,
Kevin
2008 A4 Avant 2.0T 6MT S-Line Stage 1
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