I understand what you're saying and agree. The problem I have is the best bang for buck values for the users. Yes, you dynoes the shorties alone and saw minimal results and yes, no one is just going to do them alone, but what I'm interested in is if you would have seen close numbers without them and just the x and high flow cats. If you would have seen say 12 or so HP, then in all fairness, the x pipe and high flow cats would be the best investment and not bother with the shorties.

If you have that data, I'd love to hear it and I'll be on the bandwagon. That's the info I'm looking for.

Yes, this is Chevykiller...[sm=icon_cheers.gif]

 

Mind if I chime in? I've run both these combinations: Magnaflow Tru-X pipe with high flow cats with the stock manifolds, and American Racing Headers with they're X pipe. While I did not dyno the car in between installs, my track results were almost Identical with these set ups. With multiple runs, temperatures and 60 ft times being very close, I maybe gained 1/2 mph in the quarter mile with the ARH's. One thing that I really noticed, is the heat soak from the long tubes was unreal! If I hot lapped the car with the long tubes, I would lose 3 mph! I would only lose about .5 to 1 mph with the stock manifolds.Plus, it would takemeat least a1/2 hour(depending on outside temps, sometimes much more)for the motor to cool off enough to get back in the lanes. I think the Magnaflow Tru X pipe is a really underrated, overlooked product.

 

Great info. That's the kind of data I like to hear. I wish I could get an opinion from on exactly what you did bit the shorties. Perhaps I will.

I really don't know if the midpipe and high flow cats plays more of a role in the numbers people are claiming with the shortie headers. If this is the case, then it would seem that the midpipe and high flow cats are the best investment and forgo headers altogether.

This is what I'm trying to get a handle on. Thanks again for the input.

 

Anyone tried the Pacesetter headers?

 

I have the JBA LT's and they have the CARB# stamped right on them.

 

Include Borla in the great brands that make longtubes!!!!!! I love my XR-1 Headers!

 

Hi ratinacage,

The CARB plaque that was puton some JBA LT's was placed there in error andis missing some part or all of the important EO#'s that make it exempt. There have beenno CARBtested and certifiedLT headers for the S197GT cars ever and thee cannot be based of that section of the emissions code. There is a state of Califonia web site thatlists the EO#'s that have been issued, go look there. If you go an look closely you will see the numbers are missing. If you still think they are legalgo and have your car tested at a state emissions test center, if they do a visual inspection as they are requiredyou will be told they are not alegal modification.

HTH!

Oh, here is a place where you can see EVERY EO exemption issuedby the CARB EO LINK

 

Hi CK,

You have missedmy point. To make valid comparisonsyou need to compare apples with apples. Comparing a set of good LT's and the matchingO/R/cattedX/H pipe to a set of good Shortys using astock down pipe and exhaust withouta good O/R/catted X/H pipe will naturally show the shortys at adisadvantage. But if you compare a set of good shortys complete witha good catted X pipe like the MagnaFlow Tru-X Pipe you will se very litle difference in output with the major bolt-ons.I've found that with shortys you make better mid-range torque with a catted downpipe and the same is true for long tubes.

HTH!

 

On the side, why are the JBA shortys so much more than the BBK? And why would one get ceramic over bare stainless? Do the one's that are chrome discolor?

 

Hi drbobvs,

All you have to do is look at the BBK's vs the JBA's and you can see the difference in the complexity required to make the JBA headers not to mention the complete weld quality and thatJBA's are made of stainless steel. The ceramic coatings are really tremendous at keeping the heat in the exhaust and out of the engine compartment. The difference in under hood temps is very noticable even without a temp gun. The chrome colored JBA headers are also ceramic and they do not discolor like regular chrome. The silver ceramic does get a patina but it stays shiney.

HTH!