JBA headers gains
#1
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Any one on here have JBA headers, what gains did you see, what mods do you have. I am interested in adding headers but I want to remain emissions (sp) legal. Does anybody have any other suggestions?
My mods
2002 WS6 M6
MTI T1 Cam
ported TB and coolant bypass
Lid
GMMG catback
Cut out
Current #
~380rwhp
~360 rwtq
thanks in advance
My mods
2002 WS6 M6
MTI T1 Cam
ported TB and coolant bypass
Lid
GMMG catback
Cut out
Current #
~380rwhp
~360 rwtq
thanks in advance
#3
11 Second Club
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^^^^ What he said.
Now, for the unavoidable question: Why do you want to stay emissions legal? Where do you live? Do you know what kind of inspection they do? Longtubes are much much better than shorties and will pass an OBDII plug in inspection. Hell, I pass with longtubes, no cats, duals, no AIR, and no EGR.
Now, for the unavoidable question: Why do you want to stay emissions legal? Where do you live? Do you know what kind of inspection they do? Longtubes are much much better than shorties and will pass an OBDII plug in inspection. Hell, I pass with longtubes, no cats, duals, no AIR, and no EGR.
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#8
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If you have to go shorties, I would recommend getting the BBK ones. The JBA, Edlerbrok, Hooker shorties are 1 5/8, while the BBK are 1 3/4 primary tubes. There are only like four or five people who have them and they have seen 12-15 horsepower on stock cam cars (with a new high-flow catted y-pipe). With your car, I would see more than that.
edit: you dynoed at 380 with those mods?! Wow, nice numbers!! And what is the T1 cam from MTI? Never heard of that and I can't find it on their site![Sad](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_sad.gif)
-Todd
edit: you dynoed at 380 with those mods?! Wow, nice numbers!! And what is the T1 cam from MTI? Never heard of that and I can't find it on their site
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-Todd
#11
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Originally Posted by Ferocity02
LT headers, just put the stock ones back one when smog time comes... It's just a few hours out of two years ![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
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I think you guys have convinced me to go with LTs but which ones sound good with the GMMG catback? I heard it does not sound good with no cats?
thanks again
#12
TECH Senior Member
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Originally Posted by 2k2redZ
I think you guys have convinced me to go with LTs but which ones sound good with the GMMG catback? I heard it does not sound good with no cats?
thanks again
thanks again
#13
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Originally Posted by 2k2redZ
I think you guys have convinced me to go with LTs but which ones sound good with the GMMG catback? I heard it does not sound good with no cats?
thanks again
thanks again
-Todd
#14
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Originally Posted by Gloveperson
edit: you dynoed at 380 with those mods?! Wow, nice numbers!! And what is the T1 cam from MTI? Never heard of that and I can't find it on their site
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-Todd
MTI T1 221/221 .558/.558 112
#15
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THe 12-15 hp gain with BBK shorties was over 98-99 tube exhaust or 00-02 cast manifolds. I have heard you don't gain anything over the 00-02 manifolds. If anyone know different let me know. I am thinking of dropping the LT and going with a ported 01 manifold w/ dynotech cats and 2 1/2 true duals all the way back. Will the BBK outflow the port manifold?
#16
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Originally Posted by Bowtieman4life
THe 12-15 hp gain with BBK shorties was over 98-99 tube exhaust or 00-02 cast manifolds. I have heard you don't gain anything over the 00-02 manifolds. If anyone know different let me know. I am thinking of dropping the LT and going with a ported 01 manifold w/ dynotech cats and 2 1/2 true duals all the way back. Will the BBK outflow the port manifold?
-Todd
#17
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in my opinion i never really felt that shorties r worth it, i would save the manifolds, and go with the lt's...try passing emmision with them on...if u fail, u get a free try to correct it, just throw on the manifolds and pass that way, like said above, its only a few hours out of a year
#18
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Originally Posted by SLOW95Z28
in my opinion i never really felt that shorties r worth it, i would save the manifolds, and go with the lt's...try passing emmision with them on...if u fail, u get a free try to correct it, just throw on the manifolds and pass that way, like said above, its only a few hours out of a year
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-Todd