[Official] "Do I need a tune with bolt-ons?" thread

[DEpointfive0]

Originally Posted by 1st

So just as an fyi for myself. If I run a Stillen cbe, keep the cats and install a Stillen G3 cai with no tune. Will I throw a cell? I know I shouldn’t be due to having the cats and have had other cars with this type of set up(cai/cbe). But I’m reading a lot on the Z getting cells after G3's with only having cbe/cai? and per Stillens web sight the discription says it might throw one. Any insight would help.

... You shouldn't get a CEL with HFCs, CAIs, and a CBE if your installs went correctly.

[1st]

Originally Posted by DEpointfive0

... You shouldn't get a CEL with HFCs, CAIs, and a CBE if your installs went correctly.

........Really come on now pal. HFC I’m not talking about. I know the HFC will throw a cell unless you have the bung or tune. I’m talking about just CBE/CAI and KEEPING THE CATS. There are threads on this forum that people are stating they are throwing a cell with just 2 breather mods with no vacuum leaks and having the mass air flow sensors cleaned with cleaner. So this is why I’m asking in theory there shouldn’t be a cell thrown. Also I have read a lot of threads stating you didn’t tune. What are your mods?