[knowlm]

My06 has had a catless tbe for about 6 months now, no em at all, and runs just fine. I am getting it tuned later today though. I ran my 02 wrx with a catless tbe for almost two years without any em until I got a vf39 and I never had an issue. I know that it is 'bad' to do but I have never had a problem. Maybe I am just lucky, also I drove my wrx like I wanted it to blow up.

[sabingr]

Thank you guys for all your input, i appreciate it.

[Tortfeasor STi]

Originally Posted by sabingr

well how is your car running without the em?

You will not be able to tell with the seat of your pants whether the car's tune is off a little bit. You can have pre-ignition without knowing it. By the time you have heard it or felt it it might be too late for a ring land. The car may feel great without EM and a TBE but that does not mean its a great idea for your car. Wait till you get EM and then do it all in a blaze of stage 2 glory. It does not make sense to risk a $5K+ engine because you lack a $600-800 tuner IMO.