JBA shorty's and High Flow cats..Tune Needed???

[litle88]

Guys it doesn't upset me at all, it's just the first time I hear of such a gain. It is a kinda hard to believe it happened on the same dyno with almost the same weather as the first run.

Like Vader said, if you live in "The People's Republic of California" I understand having to keep your manifolds and wanting to get hf and the most out of your exhaust. BUT if your willing to tune then im JUST SUGGESTING long tubes so you can get the most bang for your buck. That's all, not bashing not pissed just would like to point out to other members and OP's so your not stuck paying for SHorties then Lt's later cause your not satisfied or getting cammed in your future.

[thahemp]

Also. You should look into dropping $30 to get an ELM327 and the Torque Pro app. Then you can view/clear your codes as they come up (should they come up... which they very well can) with your phone. It also has all sorts of awesome PID monitoring that you can assign to gauges and log ECM data.

[Ronin_2SS]

Originally Posted by litle88

Guys it doesn't upset me at all, it's just the first time I hear of such a gain. It is a kinda hard to believe it happened on the same dyno with almost the same weather as the first run.

Like Vader said, if you live in "The People's Republic of California" I understand having to keep your manifolds and wanting to get hf and the most out of your exhaust. BUT if your willing to tune then im JUST SUGGESTING long tubes so you can get the most bang for your buck. That's all, not bashing not pissed just would like to point out to other members and OP's so your not stuck paying for SHorties then Lt's later cause your not satisfied or getting cammed in your future.

well just to clarify "tune" has nothing to do with smog. people get shorts based on smog alone. I can tune my shorties and still pass smog as long as i replace the hf cats with the stock ones. You have LT's and the smog tech most likely will not even smog the car. He/she will fail based on the visual part alone. so tune is not the issue. So when people say if your gonna tune might as well go LT's. nope doesnt work that way either. LT's will fail you before they even get to the tail pipe sniffer. Basicly unless you have a shop in your pocket to over look them, tuning your short/hf cat combo is our ONLY option. or you swap them to the stock manifolds and cats every 2 years.

as for me im pretty happy for my bang for my buck...



same dyno cooler day fresh oil replaced, plugs and wires

[VADER SS L99]

Originally Posted by ddunerider

Damn!!!...getting crazy so far I like the sound and added power but after a hard down shift and flooring it I got a cel..Tunning will happen this week and Ca. Legal....I rode in a Long tube car with HFC to freicking Loud for me.Plus I will be happy with the performance for now after the tune.But hey some like the Long tubes but I dont want to take them off just to smog...I make up for less power with driving skill...

LT's are not loud at all with the right cat back. I really need to get a video of my setup. It is fairly quiet at idle and part throttle even with my cam and LT's.

[thahemp]

Originally Posted by VADER SS L99

LT's are not loud at all with the right cat back. I really need to get a video of my setup. It is fairly quiet at idle and part throttle even with my cam and LT's.

I'd like to hear that.

[ddunerider]

Originally Posted by VADER SS L99

LT's are not loud at all with the right cat back. I really need to get a video of my setup. It is fairly quiet at idle and part throttle even with my cam and LT's.

Im sure they all sound differant but the JBA Long with HFC was make me ill..The wife would have not liked it.And driving to Vegas and Arizona all the time would not be fun..I love the sound Im getting with these...Car will be tuned and I can pass Smog here in So-Cal ..Im done!!!..

[VR Baron]

Originally Posted by ddunerider

Im sure they all sound differant but the JBA Long with HFC was make me ill..The wife would have not liked it.And driving to Vegas and Arizona all the time would not be fun..I love the sound Im getting with these...Car will be tuned and I can pass Smog here in So-Cal ..Im done!!!..

One member here did solo axelback, so muffler delete, then solos's. Without his resonated x pipe he also said would be just over the top to loud.My outlaws are loud but great sounding but also a muffler delete. Idid solos would have to do the same as he did. Let alone ad shorties.

[ZED SLED]

I started by getting shorties because I didn't want to jeopardize my warranty with a tune. I don't race, but show, and wanted something that looks better than rusty manifolds. Then I got Solo HFCs, sounded really good and definite increase in power. This spring I said, 'WTF, car is almost 3 years old, only a couple left on warranty'. So I got dyno-tuned at New Era Performance. Another power increase. Put down 417 on their Dynojet after tune (405 pre). The only other dyno run I ever did was a portable Dynojet at mid-Ohio, before HFCs and tune, where I put down 375 (CAI and shorties). I know it's different dynos and can't really compare, but the moral of the story... wish I had of gone LTs to start with because there's still more on the table. Eh, maybe next year.

[ddunerider]

After my Tune ..417 as well!!

[nicave13@gmail.com]

Ronin,

First off excellent point, which I feel sheds some real legitimate light on the LT, ST debate. Secondly, what plugs did you go with? Gap? Running 91 on the dyno? Dynojet dyno, or? Great vids BTW.

My only impute on the debate is this. Yes, LT's have the possibility of always making more power, but... People always tend to let emotion and quick judgement in when posting. Here we have a more apples to apples example. Alone ST have little gains, it is the cat's where the real gains are seen. Compare my friends LS3 with a CAI, LT's and HF cat's. He made 405 pre-tune, 412 after tune on a dynojet vs Ronin's 412 no tune. This is a great apples to apples comparison. Same motors and mod's except for headers. Ronin goes on to do a plug and oil swap and make even more power untuned. Don't know his parameters, but my example was low humidity, 60's and Las Vegas altitude.

Thoughts?



Btw, I have a L99 with only a CAI and JBA hf cat's, total investment so far $310, no dyno #'s. Planning on Shorties and plug/wires.

Originally Posted by Ronin_2SS

Most people don't give shorties credit because majority just get the shorts alone. People forget that when you go LT you are removing the stock cats and replacing them or deleting them. Shorts with high flow cats work well and is a great alternative for smog people. Because it's a hell of a lot easier to replace the cats than the whole header and system. A tune on this set up is not needed but will help power wise. Cells that pop up are usually due to the rear sensors reading abnormal exhaust flow. Simple extenders will fix that. I dynoed 412whp no tune LS3. Then dynoed again after oil, plug and wire change on a much cooler day and did 428whp no tune. This combo does well imo. And should not be shot down so quickly by those who have never had this set up.

[thahemp]

I would like to take this opportunity to politely point out one more time that this setup is only ideal for people who have to pass an inspection that doesn't allow longtube headers, or for people who don't want to tune their car.

The longtubes are recommended for anyone wanting to cam their car, or anyone who doesn't fall into the category above.

JBA HF midpipes = $389
Solo HF midpipes = $575 LS3, $675 L99

BBK shorties = $300 minimum (chrome)
JBA shorties = $485 minimum ($620 for coated)

So $689 minimum for a shorties + HF cats setup new (not including install or shipping). If you intend on camming or getting longtubes someday, then that's a pretty hefty chunk of change to be throwing at a temporary mod. You'll be lucky to get half of your money back out of your used parts in the classified section.

[carrs_crew]

I am going st jba with hfc, road racing What type of extensions should I go with? or do I even need them? I might go turbo at the end of it all so I heard st's were the best route anyway. what you think?

[2010 4 DW]

Originally Posted by carrs_crew

I am going st jba with hfc, road racing What type of extensions should I go with? or do I even need them? I might go turbo at the end of it all so I heard st's were the best route anyway. what you think?

You won't need extensions and the JBA short tube works GREAT with the Turbonetics kit.

[carrs_crew]

Originally Posted by 2010 4 DW

You won't need extensions and the JBA short tube works GREAT with the Turbonetics kit.

Thanks, and good to know about turbonetics