The JBA cat4wards are equal length shorty headers..Although their still considered as shorties, the difference between equal length and regular shorties is, the tubes on equal length shorty headers, are all the same length.. Where on the other hand, un-equal or regular shorties, the tubes are not the same length.. On our 05-06 Mustangs, the stock manifolds are much less restrictive, and flow much better compared to the now outdated SN-95 Mustang.. Therefore, there is very little to be gained, with regular shorty headers, other than maybe a louder sound..As for the 20+HP claim about the cat4wards are concerned ? I honestly cannot provide an answer for you, one way or the other..But I can tell you this..if you're looking for an alternative, to long tube headers and the high price, then the JBA cat4wards, are the way to go...However, if you're looking for the most HP. gains, then long tube headers, are you're best bet..If you check out www.brenspeed.com He actually has pretty decent prices on long tube headers, so I would also recommend that you check out his website.. And here's another vendor, you can also check out..Here's the link..http://www.discountpowerparts.com/Online_Store/SCT_TUNERS/SCT_Performance_Tuners.html Anyway, Good Luckmhanksii said:I am getting started on my 05 GT and need some advice. I have been reading the forum posts have yet to see anyone with a pre header dyno sheet and post header dyno post. Are shorties worth anything? Are long tubes worth high price they are fetching? Where do the JBA cat4wards fit in, are they shorties and if they are do they really get the 20+hp they are claiming?
I believe that you can somehow, turn off the 02 sensor with you're X-CAL II tuner, or also use the 02 sensor plugs..And here's another option, you should look into..Contact you're Dept. of Motor Vehicles, and find out, if they have an emissions exemption law..How it works in my state is.. if you put 4000 miles or less, per year on you're vehicle..You're only required to pass you're state's safety inspection test, which has nothing to do with you're headers or sensor plugs, so if you're concerned about DEQ giving you a hard time, you should look into it..Anyhow, hope everything works out for you..PDXStangDude said:One of the reason's I feel like going with the shorties is the O2 sensor. Or am I wrong? My understanding is if I go with LT's I will get the O2 sensor light to come on. Easily fixed with the O2 sensor plugs but I have to worry about DEQ here in Portland and I don't want to here any crap from them.
In you're honest opinion, as far as HP. gains, are concerned..? Would equal length shorties, also be considered as a waste of money ?? And BTW, when you mentioned that any Hp claims, are way over-rated by the header manufacturers...Are you also including JBA ??? I just happen to notice, that you're long tube headers, are JBA's.. Just a thought..anthony05gt said:Any hp claims are way over-rated by the header producers. Those hp claims are for engines that actually need more flow like a higher boost blower car. Stick with longtubes only for the best overall performance. They cost more, but you only have to buy them once.
I installed longtubes and use all four 02 sensors and have never had a code with 490 rwhp. Don't waste your money on shorties unless you just want the sound without much in hp gains.
red05bullitgt said:In you're honest opinion, as far as HP. gains, are concerned..? Would equal length shorties, also be considered as a waste of money ?? And BTW, when you mentioned that any Hp claims, are way over-rated by the header manufacturers...Are you also including JBA ??? I just happen to notice, that you're long tube headers, are JBA's.. Just a thought..
Are you're BBK shorties, equal length shorties ? or regular, un-equal length ? I know that un-equal or regular shorties are only good for about 5Hp. But my question and concern is, how good are equal length shorties ?..In other words, what's the most HP. gain, you can expect to see with equal length shorties ? and how much of a difference, is there between the 2 different types ?jwgroovin said:Just a note: the November issue of Muscle Mustangs and Fast Forwards tested a good number of shorties, and found at best a 5hp gain. The manufacturers disputed this test pretty quickly, but no one to date has been able to demonstrate anything beyond that.
I have BBK shorties, and they sound pretty good on my '05 and son's '86 Mustang GT. He clearly gets more out of them performance wise, and while my seat of the pants says "yup" in 2nd and 3rd gear, I really won't know until I get it dynoed next month.
For now, I think they're just a sound thing...
John
red05bullitgt said:In you're honest opinion, as far as HP. gains, are concerned..? Would equal length shorties, also be considered as a waste of money ?? And BTW, when you mentioned that any Hp claims, are way over-rated by the header manufacturers...Are you also including JBA ??? I just happen to notice, that you're long tube headers, are JBA's.. Just a thought..
red05bullitgt said:Are you're BBK shorties, equal length shorties ? or regular, un-equal length ? I know that un-equal or regular shorties are only good for about 5Hp. But my question and concern is, how good are equal length shorties ?..In other words, what's the most HP. gain, you can expect to see with equal length shorties ? and how much of a difference, is there between the 2 different types ?
red05bullitgt said:In you're honest opinion, as far as HP. gains, are concerned..? Would equal length shorties, also be considered as a waste of money ?? And BTW, when you mentioned that any Hp claims, are way over-rated by the header manufacturers...Are you also including JBA ??? I just happen to notice, that you're long tube headers, are JBA's.. Just a thought..
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