Subject	3" DP/TP & 2.5" catback
Posted by	mikem@ztune.ca on July 26, 2007 at 6:30 PM
	This message has been viewed 933 times.
In Reply To	can you explain the gain just by using the 3" Dps and posted by zyoulater on July 26, 2007 at 05:49 PM
Message	3" DP/TP & 2.5" catback is better than 2.5" DP/TP and 3" catback. The reason is, when the air comes out of the turbos, it's HOT! The bigger the pipe right outside the turbo, the faster the air can expand and cool. As it cools, it then shrinks a little and becomes more dense. That's why 3" DP/TP matter most. By the time it gets out the TPs, it's already cooled a little, so 2.5" cat-back is restrictive, but not as restrictive as the 2.5" DP/TP would be. If you can only afford half the system, start with DP & TP. Greg even makes a 3" TP that funnels into the 2.5" exhaust.
Follow Ups	3 inch parts.............. - Greg D. (Specialty-Z) 15:51:18 07/26/07 What is the difference in loudness between the 3" catback - olyar15 15:58:53 07/26/07 Well..... - Greg D. (Specialty-Z) 16:09:22 07/26/07 When will the quad tips be available? (n/m) - Piranha 23:12:23 07/26/07 Come and listen... - mikem@ztune.ca 16:17:16 07/26/07 I've heard your car, and I like how it sounds. Problem is - olyar15 16:35:03 07/26/07 Then... - mikem@ztune.ca 16:55:47 07/26/07 I was sold when I talked to you before.... - awesome90tt 16:00:59 07/26/07 Man, Specialty Z and their wonderful parts and service - dregos 16:09:35 07/26/07 Classifieds will be flooded... - pionkej 16:11:25 07/26/07 How do you think mine ended up there?? ;-) (n/m) - Rule12b 20:19:31 07/26/07 Amazing! - induetime 16:12:06 07/26/07 Re: Amazing! - awesome90tt 16:13:30 07/26/07 Stock turbos with 3 ich made 24 PSI 450 RWHP 500 RWT (n/m) - Greg D. (Specialty-Z) 16:16:07 07/26/07 how long do you think stockers will last at those levels - The Devils Z 12:29:45 07/27/07 is there an ETA for when they will be "officially" for sale? (n/m) - LJZTT 16:12:55 07/26/07 "They are officially" for sale :-) (n/m) - Greg D. (Specialty-Z) 16:17:30 07/26/07 awesome - LJZTT 16:22:12 07/26/07 You have Email :-).... (n/m) - Kyle(Houston) 16:23:16 07/26/07 Re: "They are officially" for sale :-) - Twindragon 16:31:38 07/26/07 Still working on getting it all up. (n/m) - Greg D. (Specialty-Z) 16:34:57 07/26/07 <3 (n/m) - Broke_as_**** 16:16:58 07/26/07 Impressive! I'm very happy to see that all the work that - TheTwinZ (Peru) 16:19:32 07/26/07 love mine :) (n/m) - JaffaUK 16:20:07 07/26/07 I'm glad all of SPZ R&Ding is paying off!! ;-) (n/m) - Spongerider :) 16:21:19 07/26/07 Looks great guys. See you tomorrow morning - Mike(La Canada) 16:25:14 07/26/07 Righteous (n/m) - Summeronthechain 16:25:44 07/26/07 3" Sport 530 Dyno - mikem@ztune.ca 16:26:49 07/26/07 nice photoshop :) jk (n/m) - TWINTURBONICK 16:39:34 07/26/07 lol! That's MS Excel! - mikem@ztune.ca 16:50:39 07/26/07 haha I love how you have a green n :) I know its legit. (n/m) - TWINTURBONICK 16:57:03 07/26/07 full 3 inch system :) (n/m) - The Devils Z 16:28:45 07/26/07 do you have the a/f ratios for these dynos ? (n/m) - The Devils Z 16:29:42 07/26/07 I love my 3" diameter pipe. - Scotts94z32 16:37:28 07/26/07 They look so much like art it's almost a shame to hide them - audioquest 16:43:39 07/26/07 What kind of gains could I expect running... - jickel180 16:58:17 07/26/07 In my experience... - mikem@ztune.ca 17:05:38 07/26/07 Can you even run these DPs with 2.5 inch test pipes - awesome90tt 17:08:11 07/26/07 You can. It's not ideal, but it will bolt to 2.5" mid pipes - olyar15 17:15:35 07/26/07 Yes, you can...even stock cats... - mikem@ztune.ca 17:39:51 07/26/07 Re: Yes, you can...even stock cats... - awesome90tt 18:26:53 07/26/07 The downpipe area is where the largest gain comes from..... - Greg D. (Specialty-Z) 19:55:24 07/26/07 What if you have a 2.5 inch downpipe and 3 inch tp? - AZHeat 21:25:43 07/26/07 I doubt it. You are already too far from the turbo to - Scotts94z32 10:17:40 07/27/07 cant wait to upgrade! (n/m) - Alan(NJ) 17:41:21 07/26/07 can you explain the gain just by using the 3" Dps and - zyoulater 17:49:43 07/26/07 3" DP/TP & 2.5" catback - mikem@ztune.ca 18:30:21 07/26/07 Correct - SeedyROM 19:44:22 07/26/07 Re: can you explain the gain just by using the 3" Dps and - Greg D. (Specialty-Z) 19:56:56 07/26/07 is it just me or was it not so long ago when pretty much - robo (sebring1970) 18:48:11 07/26/07 that was the impression that I got from the forum... - inf 18:55:49 07/26/07 every dogma has its day ;c) (n/m) - robo (sebring1970) 19:29:10 07/26/07 There were a few of us that had faith in the 3"ers. ;) - Scotts94z32 10:41:03 07/27/07 AzHeat? Is that you? :) (n/m) - Guapo 10:49:47 07/27/07 He stole my laptop! That was sort of Azheat-like. - Scotts94z32 11:07:26 07/27/07 lol ... - Guapo 12:08:03 07/27/07 What the hell is that suppose to mean? (n/m) - AZHeat 16:55:38 07/27/07 Yeah, I think a third guy running them was - SeedyROM 11:10:41 07/27/07 Absolutely. We couldn't try on other cars because they were - Scotts94z32 11:22:39 07/27/07 I ran 3 inch downpipes / midpipes on my Sport 600's - The Devils Z 12:05:57 07/27/07 Yep, you're the one. The name change is what threw me - SeedyROM 13:16:53 07/27/07 Just wait till some one proves that FMIC is actually good:P (n/m) - Red Baron Z 19:01:33 07/26/07 Just wait till some one proves that a FMIC is actually good (n/m) - Red Baron Z 19:17:48 07/26/07 There's been actual testing of those ;) (n/m) - SeedyROM 19:43:14 07/26/07 (:o (n/m) - Red Baron Z 19:48:53 07/26/07 Absolutely. 3" existed back then but wasn't efficient - SeedyROM 19:42:51 07/26/07 thank you for that (n/m) - robo (sebring1970) 19:51:38 07/26/07 np! - SeedyROM 20:00:31 07/26/07 That opinion originated from Greg D. Himself. Everyone - AZHeat 21:00:17 07/26/07 Don't forget, 3" never proved *itself* back then - SeedyROM 23:08:49 07/26/07 HI Ryan! - Scotts94z32 10:34:57 07/27/07 Those are custom divorced, NOT available product ;) - SeedyROM 10:59:08 07/27/07 One thing they certainly were not was affordable. - Scotts94z32 11:10:04 07/27/07 No doubt - SeedyROM 11:14:03 07/27/07 lol ... - The Devils Z 12:13:43 07/27/07 No, it didn't. (n/m) - Kenny 23:38:46 07/26/07 I've been saying this for some time now (n/m) - The Devils Z 12:04:38 07/27/07 Three posts in one thread to remind us? - SeedyROM 13:28:43 07/27/07 I took such a "schlacking" on the 3 inch debate ... - The Devils Z 13:48:23 07/27/07 True, I'll give you that - SeedyROM 14:19:10 07/27/07 I think you are correct with your statements on the - The Devils Z 14:51:26 07/27/07 Here's to fast Zs =) - SeedyROM 15:08:16 07/27/07 Thanks Greg - Red Baron Z 18:57:02 07/26/07 Here's my 3" Stock Turbo dyno - SeedyROM 20:19:49 07/26/07 Holy shift-grip, that's a freakin rocket !!!! ha ha ha (n/m) - AZHeat 20:51:54 07/26/07 Damn straight. - SeedyROM 21:11:30 07/26/07 Theres no mention of injectors in your profile. - EricTTZ 21:39:39 07/26/07 Oh heck no. Just had them upgraded as I was saying - SeedyROM 22:50:54 07/26/07 I made 361 RWHP and 401 TQ last year with stock turbos, - phillyz 11:46:48 07/27/07 COMPLETELY different situations... - Scotts94z32 12:59:07 07/27/07 What he said! - SeedyROM 13:36:41 07/27/07 He also has different DP's and TC. (n/m) - AZHeat 14:14:26 07/27/07 You have a different TC and tranny than Seedy. - AZHeat 14:13:12 07/27/07 Another good point - SeedyROM 14:22:44 07/27/07 What would you do without me and Scott? :) (n/m) - AZHeat 15:04:22 07/27/07 impressive .. (n/m) - The Devils Z 14:44:47 07/27/07 Re: 3 inch parts.............. - WhiteBoyFunk 21:01:18 07/26/07 Congrats. Awesome work on the exhaust. It's not - AZHeat 21:04:36 07/26/07 Dead sexy! - thejones (Sacto, CA) 21:48:34 07/26/07 so what would running dump pipes off the wastegate side add? - DarkZide 22:05:11 07/26/07 a headache - aliaZ 22:39:49 07/26/07 2nd. An open dump is insanely loud, and not "that sounds - Scotts94z32 11:24:47 07/27/07 With my external wastegate setup I was going to go - AZHeat 14:37:20 07/27/07 good thing you decided against it - aliaZ 15:42:15 07/27/07 Anyone wanna sell me their old DP's? - zleepertt(MD) 22:10:35 07/26/07 Sold mine to Tu - SeedyROM 23:00:38 07/26/07 And I sold them to Sponge, forgot that 4 bolt-5 bolt stuff. (n/m) - Tu 10:38:41 07/27/07 lol (n/m) - SeedyROM 10:55:45 07/27/07 Greg, is there No need for the flex-pipes in the testpipes - dregos 23:07:24 07/26/07 they take some stress off of the mani's - genic 08:44:11 07/27/07 Thanks for the reply. Yes, I have them on my 2.5" settup. - dregos 11:03:20 07/27/07 hmm time to spend more money :) (n/m) - Piranha 23:22:23 07/26/07 It's always something isn't it? I am getting ready to put - dregos 23:30:55 07/26/07 going to have super splits lying around then? ;) (n/m) - SeanK (StL) 00:17:20 07/27/07 yep :) (n/m) - Piranha 01:51:56 07/27/07 I love mine!! - EvilTwin(Omaha) 01:28:45 07/27/07 Very nice Greg, Seb and co. - eriksu9 08:14:54 07/27/07 just my 2 cents...... - DrDCanaceu 09:34:50 07/27/07 Those are works of art - - TT XTZ 11:00:14 07/27/07 Mine are fantastic!!! Thanks Greg...also, as the imitators - citation 14:09:34 07/27/07 Had mine Swain Coated - citation 14:17:44 07/27/07 where aboots did you get that done? (n/m) - genic 17:59:00 07/27/07 Swain Technology Inc. - citation 18:50:17 07/27/07 Duh!!! (n/m) - AZHeat 14:13:38 07/28/07 well f face....i never looked into it. so piss off (n/m) - genic 21:11:25 07/28/07
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