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- 2002 BJFW, 2007 BK3P, 1979 SA22C, 2005 BK3P
Thanks go out to tru-boost for loaning his car and his time for this project.
We've completed and installed our prototype turbo back exhaust system on tru-boost's mazdaspeed3. The system is a full three inch stainless steel system. Unlike some proposed systems, this includes a replacement downpipe. The prototype system uses a bottle resonator and a Vibrant TPV style muffler with a 4 inch angled tip. For emissions purposes we fitted the downpipe with a Vibrant high flow metal core converter. The car has not, after extensive testing, ever thrown a check engine light. This makes the exhaust system - in catted form - emissions legal.
There are minor fitment and contact issues that we will be ironing out before hitting production with these systems. Exhaust note is very nice and truly allows one to hear the powerband and the turbocharger. Acceleration is smooth and constant. We will be dynoing the exhaust system when the production model is ready. From my own drivability experiences I feel confident in two things - some tuning will be required to net the most on this car from any exhaust and there will be better gains on a catless system, regardless of how "high flow" it is.
Note to everyone changing out the downpipe - be careful with the primary o2 sensor. if you break it, its a $300 part and very hard to come by from mazda at this time.
We will be offering introductory pricing and while numbers are not set in stone, we aim to be at or under $1000 for a catless system and at or under $1300 for a catted system.
if you are interested in being a test car, please PM me or email me right away.
We've completed and installed our prototype turbo back exhaust system on tru-boost's mazdaspeed3. The system is a full three inch stainless steel system. Unlike some proposed systems, this includes a replacement downpipe. The prototype system uses a bottle resonator and a Vibrant TPV style muffler with a 4 inch angled tip. For emissions purposes we fitted the downpipe with a Vibrant high flow metal core converter. The car has not, after extensive testing, ever thrown a check engine light. This makes the exhaust system - in catted form - emissions legal.
There are minor fitment and contact issues that we will be ironing out before hitting production with these systems. Exhaust note is very nice and truly allows one to hear the powerband and the turbocharger. Acceleration is smooth and constant. We will be dynoing the exhaust system when the production model is ready. From my own drivability experiences I feel confident in two things - some tuning will be required to net the most on this car from any exhaust and there will be better gains on a catless system, regardless of how "high flow" it is.
Note to everyone changing out the downpipe - be careful with the primary o2 sensor. if you break it, its a $300 part and very hard to come by from mazda at this time.
We will be offering introductory pricing and while numbers are not set in stone, we aim to be at or under $1000 for a catless system and at or under $1300 for a catted system.
if you are interested in being a test car, please PM me or email me right away.
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