Subject	clarity
Posted by	BCs300z on October 04, 2005 at 10:10 AM
	This message has been viewed 45 times.
In Reply To	little confused after searching posted by Moliner on October 04, 2005 at 02:18 AM
Message	You are correct...there is a difference between the J and A spec downpipes. Heres the difference: A-spec: The "downpipes" coming off of the turbo are actually precats. The precats then mate with the midpipes which have the main cats. The midpipes on the TT are shorter than the midpipes on an NA due to the length of the precats. The NA midpipe has more of a curve and extends further upward (on the side torward the engine) to be able to mate with the exhaust manifolds (headers) J-spec: The downpipes coming off the turbo are actually just that...downpipes. They are fully open, cast metal pipes that mate to the midpipes. However, they are shorter than the precats and therefore do not extend downward as far off of the turbo. Because of this, japanese TTs use the US NA midpipes to mate with them. In the aftermarket world, all downpipes for the Z are made to mate with US spec TT midpipes.
Follow Ups	little confused after searching - Moliner 02:18:14 10/04/05 Re: little confused after searching - Grateful Zed 02:20:56 10/04/05 as long as your exhaust was designed for a USDM car - Adam (NoVA) 05:07:58 10/04/05 isnt whether or not he is running USDM or JDM turbos? - atl300zxtt 09:18:54 10/04/05 no - stock turbos are the same bolt pattern usdm & jdm - boileralum 10:25:02 10/04/05 what he said. (n/m) - Adam (NoVA) 11:05:20 10/04/05 Yes, SZ splits will work just fine. - aggiez32 09:48:20 10/04/05 JDM dp's bolt up to NA exhaust. I'm thinking about - rufflez 10:03:58 10/04/05 clarity - BCs300z 10:10:26 10/04/05
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