Subject	Yes and here are my thoughts
Posted by	induetime on April 08, 2009 at 4:59 PM
	This message has been viewed 95 times.
In Reply To	Does anyone have the 4-bolt 3" expansion downpipes posted by S.Watson on April 08, 2009 at 03:21 PM
Message	If I remember correctly, the older SZ Super Split DP design had approximately 6psi of back pressure & the New SZ 3" Expansion DP has approximately 0psi of back pressure. I don't recall what the "Original" Y-style DP design or what the stock Pre-Cats have for back pressure, but the difference between Super Splits & Expansions is enough to sell me. A friend went from the "Orignal" Y-style DP design to the 3" Expansion DP with Sport 530s and said the car was night and day different... it was scary to drive it after wards. I know that its not the scenario that you asked about, but they are relatively similar.
Follow Ups	Does anyone have the 4-bolt 3" expansion downpipes - S.Watson 15:21:48 04/08/09 Don't have them, - Z_Cherub 15:27:33 04/08/09 Directly from the horse's mouth.... - GodZilla (KY) 15:38:09 04/08/09 thanks. I never noticed the deal on Coz's site. (n/m) - S.Watson 15:43:52 04/08/09 I have that exact set up and will let you know shortly - BigTDogg (MA) 15:55:29 04/08/09 Niiiice...... Where did you get your pipes? (n/m) - S.Watson 16:02:10 04/08/09 I'll be ordering my TP's from SZ - BigTDogg (MA) 16:15:27 04/08/09 So that was you that bought the used DPs from the - S.Watson 16:17:27 04/08/09 It's possible :-) (n/m) - BigTDogg (MA) 16:21:32 04/08/09 . (n/m) - Dave N 16:09:51 04/08/09 . yourself (n/m) - BigTDogg (MA) 16:15:45 04/08/09 You'd expect less from a program manager? :-P (n/m) - Dave N 16:45:19 04/08/09 Any predictions on hp improvement just with 3" downpipes? - TTkeeper 17:54:51 04/08/09 I hope to dyno my z this summer with 3" dp's...stock turbos - ZEVAN (Ca) 19:03:40 04/08/09 No doubt it'll help stockers, but I'll be running SP500s (n/m) - BigTDogg (MA) 08:35:44 04/09/09 bigger is always better on the exhaust when comparing - The Devils Z 16:08:53 04/08/09 And unless it's an NA (n/m) - Z_Cherub 16:13:40 04/08/09 agreed -- always forget about NA s (n/m) - The Devils Z 07:05:59 04/09/09 Bah - they don't count anyway :) (n/m) - Z_Cherub 08:27:07 04/09/09 you said it -- I didn't :) (n/m) - The Devils Z 09:32:05 04/09/09 Would the resonators cut down on the cabin noise? (n/m) - S.Watson 16:15:44 04/08/09 I found my 3" DP's and 3" -> 2.5" TP's quieter than my 2.5" - MixManMash 16:30:47 04/08/09 Any "seat of pants" difference before/after the 3" & 3->2.5" - TTkeeper 17:58:12 04/08/09 Exactly what I wanted to ask - Pilot.P (NZ) 18:06:24 04/08/09 or you value your ears. (n/m) - SuparexTT 16:31:54 04/08/09 always? - aliaZ 16:49:47 04/08/09 Bingo. Same thing me and him always go back and forth on - SeedyROM 19:48:50 04/08/09 it depends on what you are looking for in a power band - The Devils Z 07:18:02 04/09/09 well --- agreed (n/m) - The Devils Z 07:07:23 04/09/09 are we able to use the stock CATs with the 3" dp's - RedSER13 16:57:17 04/08/09 They bolt right up. (n/m) - MixManMash 17:11:32 04/08/09 how does 3" flange mate to 2.5" flange???? (n/m) - djmethodx12 20:06:58 04/08/09 Because the bolt pattern is identical - na300zx (OH) 06:36:32 04/09/09 Yes and here are my thoughts - induetime 16:59:39 04/08/09
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