RSpengler said:I have ATR headers, and for some reason the #4 primary obstructed fitiment of the stock downpipe. I had to bang the side of my DP flat to get it to clear. I dont want to run into this issue and end up beating on the side of my brand new DP with my 5lb sledge. I dont have AC so plenty of room to move it over a bit to get the required clearance. Is it possible to build in a little more clearance and end up with the same DP discharge position?
Thanks,
-Rob
Black Knight said:So say on my truck if I was to run the 3" downpipe and then have the rest of the exhaust made to go from there out behind the pass. door, is there going to be any big advantage to the dump since I don't run a cat or a muffler and the exhaust would be pretty short anyway?
I have never had a wideband, so do you need 2 ports to have one or is there some advantage i'm missing? I doesn't hook into or replace your O2 sensor?
JS Manufacturing said:Jeremy's truck, running through a 3" cat and ATR muffler is .2 seconds slower in the quarter -vs- his dump. Granted though he gets a little more boost with dump open so that may be part of it also. I would say without cat or muffler your difference would be less, how much I have no clue just guessing.