Subject	Split down pipes shouldn't affect spool up because the
Posted by	MikeH(Twin GT35BB Incon Z) on May 15, 2003 at 11:46 AM
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In Reply To	Ash... related question to dyno >> posted by Greg (Dallas) on May 15, 2003 at 11:38 AM
Message	wastegate is closed during the spool up. The only thing that would change is the volume in split downpipe is smaller for the turbine discharge. I can see the HP being increased but the spool up 500 rpm sooner I don't yet believe. I know mine get full boost by 4500 rpm . In stock turbos full boost is at 3500 rpm. I would like to see the dyno curve of the same car with and without the split down pipe.
Follow Ups	Ash... related question to dyno >> - Greg (Dallas) 11:38:48 05/15/03 Split down pipes shouldn't affect spool up because the - MikeH(Twin GT35BB Incon Z) 11:46:24 05/15/03 Don't they reduce the turbulence around the turbine exit - MugenRacer 12:10:44 05/15/03 Split DP do improve spoolup. - ZHOUND 12:19:37 05/15/03 I'm not discounting split downpipes. Mine are split . - MikeH(Twin GT35BB Incon Z) 12:27:28 05/15/03 Also you can't compare gutted precats to smooth curve down - MikeH(Twin GT35BB Incon Z) 11:48:41 05/15/03 re-read his post. (n/m) - Dallas DamonZ 12:02:42 05/15/03 They should improve spoolup to some degree because they - AshsZ (FabZEM All) 12:18:17 05/15/03 Nobody said anything about shifting gears. That is - MikeH(Twin GT35BB Incon Z) 12:56:42 05/15/03 If you think about it, there shouldn't be any advantage - AshsZ (FabZEM All) 16:00:44 05/15/03 1BADTTZ has split DPs with the real sport600s. - ZHOUND 12:27:14 05/15/03 Again, I was just looking at the dyno curve >> - Greg (Dallas) 12:29:32 05/15/03 The turbo's on the car are real Sport 600's, no BB. (n/m) - Robert@Z1 14:02:26 05/15/03 BB catridges are overrated IMO (n/m) - U ZCREAM 12:42:43 05/15/03 why do you say that? explain please (n/m) - aliaZ 12:51:58 05/15/03 Well not 100% my opinion really, but... - U ZCREAM 13:13:46 05/15/03 Lag doesn't matter for Dyno queens. (n/m) - MugenRacer 13:49:52 05/15/03 exactly (n/m) - aliaZ 14:11:06 05/15/03 Dyno queen or not, his car is still "faster" from a 60mph - U ZCREAM 14:37:37 05/15/03 What did he run in the 1/4? - ZHOUND 14:45:10 05/15/03 Nope, that car will never go down a dragstrip more than - U ZCREAM 15:33:36 05/15/03 I don't know many people who built their cars for drag strip - ZHOUND 16:59:02 05/15/03 Exactly. I agree with everything you just said - U ZCREAM 17:38:43 05/15/03 Re: Exactly. I agree with everything you just said - ZHOUND 17:56:09 05/15/03 And thats usefull how? Getting a 1 way ticket to jail? - MugenRacer 15:20:12 05/15/03 Your sig quote isn't very fitting for your comments - U ZCREAM 15:37:50 05/15/03 I never said which one I was ;). Yes everyone sppeds. (n/m) - MugenRacer 17:29:47 05/15/03 Is that Micheal Hayes that you're talking about? (n/m) - 5150Z 15:23:55 05/15/03 Steve (n/m) - U ZCREAM 15:38:39 05/15/03 Yea, my bad! Steve! He has a VERY fine car!!! (n/m) - 5150Z 16:17:05 05/15/03 'splain tha one to me, Lucy. (n/m) - Spee 12:53:42 05/15/03 Yea, that is why mine take over 30 seconds to come to - MikeH(Twin GT35BB Incon Z) 12:55:22 05/15/03 ?? holy damn (n/m) - aliaZ 12:59:40 05/15/03 wow, got vid? (n/m) - Spee 14:12:16 05/15/03 You can hear the wheels spinning and slowing down - MikeH(Twin GT35BB Incon Z) 14:21:08 05/15/03 Actually the BBs spool fast as hell. Ask ZFreak (n/m) - John@Z1 15:04:57 05/15/03 His turbos are not BB they are standard sp600's - aliaZ 12:48:09 05/15/03 GEEZ, I've been saying it all along.......lol ( Sigh ). - ZBlacktt 13:42:53 05/15/03 Huh? Did someone just say something? ;-) (n/m) - U ZCREAM 14:14:56 05/15/03 Still driving the Van,,lol ;)~ (n/m) - ZBlacktt 16:21:41 05/15/03 I have full boost at 3200rpm....Sport 6XX's :P (n/m) - Bert D(2+2TT) 14:46:21 05/15/03 Greg, Split D/Ps WILL help with spoolup, not a lot maybe - Mark-S G P- 15:36:00 05/15/03 More thoughts on the subject... (long) - Scotts94z32 19:00:19 05/15/03 *assuming a boost controller is used to keep the WGs closed* (n/m) - Scotts94z32 10:00:06 05/16/03
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