High flow catalytic converters
High flow catalytic converters Around How much hp am I going to lose if I have a serious h/c 347 with true dual 3" all the way back?
And will the high flow cats even be enough for me to pass emissions in MA with a TREX (or even more agressive custom grind) cam and ported ls6 heads??
And will the high flow cats even be enough for me to pass emissions in MA with a TREX (or even more agressive custom grind) cam and ported ls6 heads??
Last edited by sciff5; May 10, 2007 at 12:41 AM.
I just put magnaflow 59959s on my car, bolt ons stg 2.5 5.3s and a 224 cam. In houston, my car won't have to pass sniff, just a scan and visuals. In my case, it will pass. Not sure about MA, if you have to pass sniff they may not just because a large cam like that will be very inefficient at low rpms....maybe some creative tuning would help it
are these 59959's considered OBDII compliant? Here in utah.. they said we have to use this... can be aftermarket, and dont have to be in stock location.. which is good.. but does anyone know if these are considered this? If not looks like i will have to get the other carsound cats.
