dassaur
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I do love my current exhaust but after thoughts on a new one. There a few problems I want to address. the major one is this: it's just too loud for me now.
Medium problem: drone at 1800-2k rpm
Minor problem - hangs too low
Minor problem - stretched it a year ago, requires 3-monthly adjustments to avoid contact with diff
It is a 1 3/4 non long tube 4-1 with 200 cell cats 3" xforce (https://xforce.com.au/products/h2-ve03-98-02kit/). Has centre mufflers and varex rear mufflers (which are pretty much a straight pipe when fully open).
I have the smart box to control the varex at RPM but it requires connection to OBD2 and I am really getting into tuning so always have my scanner connected these days.
Also the variable closing is not all that its cracked up to be - fully closed (0%) is amazingly quiet, but once more than 33% open can't really tell the difference between it and 100%.
I understand that 2.5" is all I need on an NA motor making 350kw (I bought the car with the 3" catback and added headers myself) - at this point it is all about noise & note.
At the moment I have an exhaust from a 2014 senator in the garage with the vacuum bimodals. I am fairly confident it is 2.25" - best I can measure internally with those ball flanges is about 60mm (2.3") Has an x pipe up top then 2 hot dogs - this is more a bonus item as I only really wanted the mufflers - got the whole catback for $200!. Have ordered the NPP in a box to retrofit vacuum operation.
My plan is, I think, to get a 2.5" exhaust made up to mate with the xforce cats, then have the ball ends cut off the mufflers and appropriate flanges put on them.
Logically, it would make sense to get a 2.5" xforce catback and have the senator mufflers modified to mate to it. But I would love to hear opinions.
While I have done my own engine and mechanical work, welding is not something I have ever attempted so anything like that would have to be done at an exhaust shop.
I think the vacuum mufflers should control the drone (closed at that rpm). All contributions welcome. I definitely want something that fits well though and is a littler quieter than a 3" straight pipe!)
Medium problem: drone at 1800-2k rpm
Minor problem - hangs too low
Minor problem - stretched it a year ago, requires 3-monthly adjustments to avoid contact with diff
It is a 1 3/4 non long tube 4-1 with 200 cell cats 3" xforce (https://xforce.com.au/products/h2-ve03-98-02kit/). Has centre mufflers and varex rear mufflers (which are pretty much a straight pipe when fully open).
I have the smart box to control the varex at RPM but it requires connection to OBD2 and I am really getting into tuning so always have my scanner connected these days.
Also the variable closing is not all that its cracked up to be - fully closed (0%) is amazingly quiet, but once more than 33% open can't really tell the difference between it and 100%.
I understand that 2.5" is all I need on an NA motor making 350kw (I bought the car with the 3" catback and added headers myself) - at this point it is all about noise & note.
At the moment I have an exhaust from a 2014 senator in the garage with the vacuum bimodals. I am fairly confident it is 2.25" - best I can measure internally with those ball flanges is about 60mm (2.3") Has an x pipe up top then 2 hot dogs - this is more a bonus item as I only really wanted the mufflers - got the whole catback for $200!. Have ordered the NPP in a box to retrofit vacuum operation.
My plan is, I think, to get a 2.5" exhaust made up to mate with the xforce cats, then have the ball ends cut off the mufflers and appropriate flanges put on them.
Logically, it would make sense to get a 2.5" xforce catback and have the senator mufflers modified to mate to it. But I would love to hear opinions.
While I have done my own engine and mechanical work, welding is not something I have ever attempted so anything like that would have to be done at an exhaust shop.
I think the vacuum mufflers should control the drone (closed at that rpm). All contributions welcome. I definitely want something that fits well though and is a littler quieter than a 3" straight pipe!)