JBA shorties VS long tubes kooks or dynatechs?

[mcshocks]

Ok, looking to do headers this summer here, whatever I get I will do with mid pipes and the high flow cats and I will purchase with a coating.

- Anyone have comparison dyno charts between these headers? Looking for numbers across the board, not just worried about the peak numbers but torque and HP gained over the whole powerband. Looking for these numbers from guys with the 5.7L as that is whats in my car.

- Any fittment issues with any of these 3 sets of headers?

- Where is the best place to pick these up price wise and customer service wise?

- Will a catback exhaust improve my performance much with these in the mix or will the R&T performance group exhaust do the job?

Any info is appreciated, thanks in advance,
Adam

[quarky42]

Short pipes: No check engine lights likely
Long pipes: Check engine lights likely, the "fix" for it may or may not work for you... and you may have to tinker with it quite a bit 'till you fool HAL enough. More power though.

Catback exhaust: gut feeling... yes you should go with a Corsa... very little restriction due to using noise canceling chambers instead of packing.

This is just from what I've seen in the forums and on MOFO event results. Anyone is welcome to disagree.

[Guest]

Adam,

It really depemds on what you're looking for out of the system really.

If all you want is a more aggressive sound, save the money on the catback ($1k-$1200 usually) and go with the Blastin' Bobs axle back setup for under $225 installed. If you do a search for Blastin' Bob's then you'll hear my sound clips and others. Terrific sound, and I got a 22rwhp gain. Most catback fare about as well on the gains.

See... I just saved you more mod money!

Headers are always a great way to go, but remember that going with shorties may limit you on future mods. LT's will work well with future hp gaining mods.

[BlackSunshine]

I have the JBA shorties with high flow cats and JBA Catback. the sound is great, the performance increase was awesome and the price was right.

Bandit, which future performance mods are my shorties limiting me from? The new bolt on turbo systems allow me to keep my shorties because they are similar dimensions to the stock manifolds, where-as the long tube boys would have to switch up.

I throw no codes, and although my increase in low range torque with the shorties is less then that reported by the long tubers, so far the benefits outweigh any minimal loss.

[mcshocks]

Adam,

It really depemds on what you're looking for out of the system really.

If all you want is a more aggressive sound, save the money on the catback ($1k-$1200 usually) and go with the Blastin' Bobs axle back setup for under $225 installed. If you do a search for Blastin' Bob's then you'll hear my sound clips and others. Terrific sound, and I got a 22rwhp gain. Most catback fare about as well on the gains.

See... I just saved you more mod money!

Headers are always a great way to go, but remember that going with shorties may limit you on future mods. LT's will work well with future hp gaining mods.

More worried about the power, sound is second here but I do need to slightly conform with the wifey and kid and have it not be too loud (although her driver now is my monte which has a cam and some pretty free flowing exhaust, she tends to like a little bit of sound as her old car had exhaust done also).

[mcshocks]

Adam,

It really depemds on what you're looking for out of the system really.

If all you want is a more aggressive sound, save the money on the catback ($1k-$1200 usually) and go with the Blastin' Bobs axle back setup for under $225 installed. If you do a search for Blastin' Bob's then you'll hear my sound clips and others. Terrific sound, and I got a 22rwhp gain. Most catback fare about as well on the gains.

See... I just saved you more mod money!

Headers are always a great way to go, but remember that going with shorties may limit you on future mods. LT's will work well with future hp gaining mods.

Is this the blastin bob's kit your talking about?
https://www.shop.alliedmuffler.com/d...8&categoryId=5

[JonzMgnm]

Adam,

Headers are always a great way to go, but remember that going with shorties may limit you on future mods. LT's will work well with future hp gaining mods.

Gotta disagree there, Bandit. Even with a head/ cam swap, there is plenty or power.

I have the JBA shorties with high flow cats and JBA Catback. the sound is great, the performance increase was awesome and the price was right.

Bandit, which future performance mods are my shorties limiting me from? The new bolt on turbo systems allow me to keep my shorties because they are similar dimensions to the stock manifolds, where-as the long tube boys would have to switch up.

I throw no codes, and although my increase in low range torque with the shorties is less then that reported by the long tubers, so far the benefits outweigh any minimal loss.

The JBA setup you have is on my car and there is arguably no deficit in power. Actually the shorties have the advantage with low-mid range torque, whereas the long tubes breath slightly better freeing up more HP up top. For everyday street use, I recommend the shorties for the weight these cars are running. We need all the low end grunt we can get.

[BlackSunshine]

Ah... well I bow to your superior knowledge. I was always under the impression that the opposite took place.. thanks for the info, happy to hear this!

[RTaddiction]

Where are you guys getting your information regarding these top-end gains for LT's and low-end gains for shorties?? Show some dyno plots which illustrate this b/c the only good data I've seen shows just the opposite w/ the LT's. Maneval69 produced one of the best before and after dynos I've seen illustrating gains w/ just headers and gains w/ headers and catback. He did Dynatech LT headers (similar to Kooks) and I believe Zoomers catback.

Here's the plot before and after headers (w/ stock catback):



Note the 28rwhp gain at 3500RPM. Huge low-to-mid gains and very little or no gains at the top end.

Here's the plot showing all 3 steps - stock, headers only, headers+catback:



If you're going to make a claim, please back it up w/ some data. Otherwise, it's just an opinion...

My 0.02.

[JonzMgnm]

Where are you guys getting your information regarding these top-end gains for LT's and low-end gains for shorties?? Show some dyno plots which illustrate this b/c the only good data I've seen shows just the opposite w/ the LT's. Maneval69 produced one of the best before and after dynos I've seen illustrating gains w/ just headers and gains w/ headers and catback. He did Dynatech LT headers (similar to Kooks) and I believe Zoomers catback.

Here's the plot before and after headers (w/ stock catback):



Note the 28rwhp gain at 3500RPM. Huge low-to-mid gains and very little or no gains at the top end.

Here's the plot showing all 3 steps - stock, headers only, headers+catback:



If you're going to make a claim, please back it up w/ some data. Otherwise, it's just an opinion...

My 0.02.

Let's see his dyno with shorties to base your claim....after all it is a comparitive statement you're making, and all he has is a dyno sheet with a stock exhaust vs. long tubes.......not stock vs. shorties. vs long tubes.

My statements are from experience outside of the LX platform, yet consistent with exhaust sytems in general.

[RTaddiction]

I'm not making any claims of how shorties compare to LT's because I don't have the data to back that up. That's my point. My heresay on the topic is just that so I'm not going to make any claims either way.

The data that I have seen shows that the LT's greatly improve low to mid range but have no marked gain on the top end until you add the catback.

[06SilverSteel]

The data that I have seen shows that the LT's greatly improve low to mid range but have no marked gain on the top end until you add the catback.

Exactly....they do breathe better so you definitely gotta open up whatever is behind them for them to do their best.

[mikespy]

Most power is probabably gonna be the Kooks... but they hang really low from what i hear. My dynatechs hang low as is but my ride is dropped and scratch the hi-flows on occasion. If your ride ain't dropped or your not gonna drop it get the kooks. If it is dropped i wouldn't recommend the Kooks. As stated up top the Long tubes are gonna breath better up top once you add mods and they also flo very well from low to midrange as shown in the above dyno. If your gonna add a few mods later down the road do it one time and get the Longtubes if your not be cel free and go with the short tubes Jonz has.