2k2redZ

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

Ferocity02

iTrader: (60)

You will probably see about 10 rwhp with those mods. They are great quality headers, but dont flow much better than stock.

blkZ28spt

^^^^ 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.

jrp

iTrader: (16)

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.

2k2redZ

thanks for all of the info guys, I guess that 10hp is not worth the money. Are there any other suggestions?

blkZ28spt

Why do you have to pass emissions??
How much money, ballpark????
What specific goals for your car?

Ferocity02

iTrader: (60)

LT headers, just put the stock ones back one when smog time comes... It's just a few hours out of two years

Gloveperson

iTrader: (9)

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

Ferocity02

iTrader: (60)

I heard BBK went back to 1-5/8" headers. But not sure.

Gloveperson

iTrader: (9)

I've never heard that, that would suck

-Todd

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

Ferocity02

iTrader: (60)

www.LS1sounds.com

Gloveperson

iTrader: (9)

every lt will basically sound the same.

-Todd

2k2redZ

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

Bowtieman4life

iTrader: (1)

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?

Gloveperson

iTrader: (9)

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

SlowTA

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

Gloveperson

iTrader: (9)

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