Has anyone ever ECUx logged before and after gains on a Stage 3 after removing ...
#1
Has anyone ever ECUx logged before and after gains on a Stage 3 after removing ...
the primary CATS?
I'm a little concerned about increased noise or potential droning and exhaust fumes.
Potential HP gains?
I'm a little concerned about increased noise or potential droning and exhaust fumes.
Potential HP gains?
#2
I haven't logged the difference, but it was certainly louder. Loud enough for me to get pulled..
over. The fumes weren't an issue though. I ran a straight pipe setup though. So keep that in mind.
#3
Didn't Mark P dyno with dumps closed and then dump open? That should give you
some idea of the gains, although less since you still have to go through the rest of the exhaust.
#5
AudiWorld Senior Member
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I have piggies, then greg @ ssp cut out the main cats welded in test pipes into twin one, it is loud
but its not too bad. I think its a big thanks to the Twin One for having a really refined sound. I mean for no cats in there, when normally driving around town it isn't that bad... I usually don't smell exhaust fumes to be honest, maybe here and there but its not like i pass out everyday in my car from them. it is loud though at WOT it sounds awesome, and another plus is catless exhausts are REALLY beneficial to the life of your turbos so they can breathe without backpressure!
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