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Old Sep 14, 2004 | 11:21 PM
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Default JBA headers gains

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
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Old Sep 14, 2004 | 11:34 PM
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You will probably see about 10 rwhp with those mods. They are great quality headers, but dont flow much better than stock.
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Old Sep 14, 2004 | 11:57 PM
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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.
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Old Sep 15, 2004 | 12:13 AM
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ask yourself if the 500+ dollars for ~10rwhp is worth it to you. i'd put that 500 dollars toward a good pair of heads or go the LT route.
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Old Sep 15, 2004 | 01:00 PM
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thanks for all of the info guys, I guess that 10hp is not worth the money. Are there any other suggestions?
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Old Sep 15, 2004 | 04:06 PM
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Why do you have to pass emissions??
How much money, ballpark????
What specific goals for your car?
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Old Sep 15, 2004 | 08:12 PM
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Originally Posted by 2k2redZ
thanks for all of the info guys, I guess that 10hp is not worth the money. Are there any other suggestions?
LT headers, just put the stock ones back one when smog time comes... It's just a few hours out of two years
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Old Sep 15, 2004 | 09:02 PM
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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

-Todd
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Old Sep 15, 2004 | 09:12 PM
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Originally Posted by Gloveperson
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.
I heard BBK went back to 1-5/8" headers. But not sure.
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Old Sep 15, 2004 | 09:38 PM
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I've never heard that, that would suck

-Todd
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Old Sep 15, 2004 | 09:56 PM
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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

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
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Old Sep 15, 2004 | 10:02 PM
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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
www.LS1sounds.com
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Old Sep 15, 2004 | 10:13 PM
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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
every lt will basically sound the same.

-Todd
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Old Sep 15, 2004 | 10:39 PM
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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

-Todd
I believe these are specs for the MTI T1 cam, it is a pretty old one if I remember correctly

MTI T1 221/221 .558/.558 112
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Old Sep 16, 2004 | 12:32 AM
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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?
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Old Sep 16, 2004 | 10:51 AM
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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?
I would assume so. Shorties are better than manifolds (even 00-02, just not by much, but make no mistake about it, they are), even ported manifolds. The BBK have been looking promising, but still will never be as good as LT's an Mid-legnths.

-Todd
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Old Sep 16, 2004 | 12:54 PM
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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
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Old Sep 16, 2004 | 01:00 PM
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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
In NJ we have these mobile inspection stations. Random Inspections and they are specifically made to find cars that are doing what you just described. They are teh

-Todd
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