as the topic says, are they any good....it's 2 inches throught out (gsr one)...i heard that it was better than jdm itr headers, is that ture??...how much do they usally run for anyways...





check out the b-pipe though....what you guys think!?

 

Looks pretty

 

I dunno how much better they are than JDM, but I have had no problems with my JG header. It's also carb legal and has the EO number stamped on the second piece. It's also a 2 piece design, so it has better ground clearance than the low-hanging JDM 4-1. I paid 480 for mine from nextcollection.com


[Modified by obd2gsr, 11:12 PM 4/8/2003]

 

i dont think its any better than the JDM 4-1, because the JDM 4-1 has a 2.5 outlet and this one only have like 2 inches outlet, and plus the JDM has bigger piping. But then thats is what i think, but those are nice headers tho.

 

I've got a jg too, and i was wondering what problems you ran into with it

 

Well, I am sure it is a good header, but I am not sure it is better than the JDM with out the collector being modified. The people who are saying it is better than the JDM ITR header is because they had the collector modified so that it would be 2.5 inches. Supposedly the mid-range is a heck of a lot better, and you can gain a little bit more up top versus the JDM. If you were looking into gettng this header, you might as well buy it from Import builders since they sell them with the collector modified.
As for the racing B-pipe, I would not recomend driving around the streets like that, because you will be pulled over as soon as you leave you driveway . It is mainly for race purposes only

 

when you say collector you mean the second piece of the header right!?....what is site for the import builders that you were talking about....does anybody else have other information about this header!?!?

 

The collector is the part that bolts up to the Cat.

 

i have a jg header w/ a modded collector by import builders, and it is awesome!! I get great power from 3k to 8k. I had dc 4-2-1, and i felt a nice gain over the dc. if you are getting one, also get a carsound cat. i was about to get a jdm 4-1 header, but that thing hangs way to low, plus that header makes more power top end. if your looking for midrange then get the jg.


[Modified by Audio28, 2:44 AM 4/9/2003]

 

When I mean the collector I mean the part that connects to the cat, I am not talking about the racing b-pipe, hope that is what you are asking
The web site is http://www.importbuilders.com/bolton.html but for some reason it is not working for me right now, but I have been there at that address, and it will give you all the info need!!!


[Modified by MilanoRED, 9:47 PM 4/8/2003]


[Modified by MilanoRED, 9:59 PM 4/8/2003]

 

this site is not working....this no pic or anything...does anyone have a different site on the collector 2.5 by import builders??

 

It is working now http://www.importbuilders.com/bolton.html

 

The fact that it has the carb legal stamp to please officer friendly and its modded so you still get the 2 1/2 collector. It doesn't hang to low, has a nice finish. I think it’s the perfect street header.

 

IB quoted 600 for the modded JG header, seems a little steep to me....

 

I saw a dyno test from a Edelbock 2-piece 4-2-1 exhaust vs. a DC 4-1 header. The Edelbrock header made 9 hp vs. the DC 5 hp gain on a fairly stock GSR.

 

was that the DC "JDM" 4-1? or their standard 4-1?

 

I got great gains on my stock motor from the jg ib header.

Rod

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Audio28 &raquo;</TD></TR><TR><TD CLASS="quote">i have a jg header w/ a modded collector by import builders, and it is awesome!! I get great power from 3k to 8k. I had dc 4-2-1, and i felt a nice gain over the dc. if you are getting one, also get a carsound cat. i was about to get a jdm 4-1 header, but that thing hangs way to low, plus that header makes more power top end. if your looking for midrange then get the jg.


[Modified by Audio28, 2:44 AM 4/9/2003]</TD></TR></TABLE>

this collector my import builders does anyone have a picture of it...how much does it cost anyway...does it help?

 

Does anyone have any dyno charts of either the JG header or IB modified JG header?? This is the only way to know whether it really makes the HP.

 

How do they go about modifying the collector? Just put a larger collector on the end or is there welding involved further down on the headers? Also, $600 for the whole thing is alot of cheeze, why not save a lil more and buy SPOON?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WiggiE &raquo;</TD></TR><TR><TD CLASS="quote">Does anyone have any dyno charts of either the JG header or IB modified JG header?? This is the only way to know whether it really makes the HP.</TD></TR></TABLE>

GSR motor

Stock Header:


JG IB Header (blue line):
Again...pay attention to the blue line....the red line is not the gsr motor before the jg header...that's in the dynochart above.



Hope this helps.

-Rod

 

Thanks RK, that was exactly what I was looking for.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sPaRk'iT &raquo;</TD></TR><TR><TD CLASS="quote">

this collector my import builders does anyone have a picture of it...how much does it cost anyway...does it help?</TD></TR></TABLE>

i'll also like to see this collector...is the ib moded header and the collector them same..i mean after you bolt/weld(???) on the collector...does anyone have a picture of the ib moded header and the collector!?!?!?!?!?!?!?!

 

i would get them over the overhyped JDM 4-1 headers(if they were the same price) they both perform well. the JDM ITR one has slittly better top end, but the JG has WAY bette midrange and usefull power!
JG hands down!!!
but like some said earlyer if you let IB mod the JG headers for you they perform almost identical to toda headers!