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

[VR Baron]

Originally Posted by litle88

You got dyno graphs before and after, curious when you start to see a difference in the powerband.

Thats what another member got.

[thepirate]

Originally Posted by litle88

Not bashing, just trying to get him his money's worth if he's willing to go to a certain point thats all killa.

Litle is right. If you're going to get a tune, there is no reason to not get LT headers.

High flow cats and shorties are for people who don't want to tune and would like to keep their warranty...

I'm one of them, and hate it with all my heart. I wish i had the balls to go for it right now.

[VADER SS L99]

Originally Posted by ddunerider

Shortys and HFC with a Tune 37 Hp gain!!..

I cant recall the exact gain but a member here saw over 20rwhp when switching from shorty headers WITH high flow cats to LT's and high flow cats. I would also like to see this 37rwhp gain from shortys, high flow cats and tune done on the same day same dyno before and after mods. If you live in Cali thats one thing but if you dont have those same type of emmision testing that CA uses then there is no reason not to get LT's if your going to tune anyway. If I lived in CA I think I would spring for the ARH shorties because I think those are the only GM state headers that actually show a measurable gain.

[ddunerider]

Got the CEL today after 50 miles but I was at 5500RPM because the car sounds so good now....I will be tuning!!

[kfm237]

I've had BBK shorties, Solo high flow cats, a CAI intake and Corsa catback on for 600 miles with several wot runs... The car's not tuned yet.. No CEL so far...

[kfm237]

Originally Posted by VADER SS L99

I cant recall the exact gain but a member here saw over 20rwhp when switching from shorty headers WITH high flow cats to LT's and high flow cats. I would also like to see this 37rwhp gain from shortys, high flow cats and tune done on the same day same dyno before and after mods. If you live in Cali thats one thing but if you dont have those same type of emmision testing that CA uses then there is no reason not to get LT's if your going to tune anyway. If I lived in CA I think I would spring for the ARH shorties because I think those are the only GM state headers that actually show a measurable gain.

Was that 20 hp gain was going from shorties/hfc & No tune to LT's/hfc & A tune?

[VADER SS L99]

Originally Posted by kfm237

Was that 20 hp gain was going from shorties/hfc & No tune to LT's/hfc & A tune?

Yes. Car was tuned. Only changes made were LT's and re tune. Before and after dyno pulls on same day, same dyno. I think it was more like 25rwhp but cant remember exactly. I will try to find the thread.

[ddunerider]

Originally Posted by litle88

You got dyno graphs before and after, curious when you start to see a difference in the powerband.

This was from another car but its true..I dynoed my car two years ago.I got 390 at the wheels..I will see numbers before and after the tune....

[Ronin_2SS]

Originally Posted by litle88

If your willing to tune, why not long tubes? Shorties are pretty pointless IMHO.

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.

[VADER SS L99]

There is 0 reasons to get shorties over LT's if you are getting a tune and live in a state thats not anal about smog laws. With or with out high flow cats the LT's do make more power than shorties mod for mod and they both cost about the same. The ARH shorties are a equal leagth shorty and only gain 10RWHP. You guys really think the other un equal leagth ones make as much or more power as those? I doubt it.

[Ronin_2SS]

Originally Posted by VADER SS L99

There is 0 reasons to get shorties over LT's if you are getting a tune and live in a state thats not anal about smog laws. With or with out high flow cats the LT's do make more power than shorties mod for mod and they both cost about the same. The ARH shorties are a equal leagth shorty and only gain 10RWHP. You guys really think the other un equal leagth ones make as much or more power as those? I doubt it.

so since the OP lives in cali that has the most strict smog laws in the US how does this help him? you out of state LT guys need to realize that LT's do not pass smog on the visual inspection. LT's remove or relocate the cats which is illegal in cali. you can have a clean running car on LT's but the sight of them will not pass period. Shorts are legal since they do not move the factory cats. now the smart thing to do is when smog comes, remove your hf cats from the shorts (tuned or not tuned) and replace them with the stock ones. simple and easy. Tune usually only affects warranty not smog. Not everyone has a smog shop in their pockets to help overlook the visual part. so whats wrong with making due with what you can use? I trap 112-113 in the 1320 with shorts, hf cats, cai and muffler delete no tune. Ive ran right along side with LT's guys so in my experience they are not the end all to be all bolt on mod.

[thahemp]

I don't know why this argument always happens. For whatever reason, it seems to be impossible for some people to cohere when these threads come up. If you don't read Vader's posts emotionally, they make very simple points.

If you can run LTs legally, then they are better than shorties + HFC. Period. Run shorties + HFC if you live in California, or if you don't want to tune.

Simple as that.

[Ronin_2SS]

Originally Posted by thahemp

I don't know why this argument always happens. For whatever reason, it seems to be impossible for some people to cohere when these threads come up. If you don't read Vader's posts emotionally, they make very simple points.

If you can run LTs legally, then they are better than shorties + HFC. Period. Run shorties + HFC if you live in California, or if you don't want to tune.

Simple as that.

because LT people like to nose up on the people that cant have LT's. especially when the original question had nothing to do with comparing the two set ups. always that one guy that says " go LT's or go home"

[thahemp]

Originally Posted by litle88

If your willing to tune, why not long tubes? Shorties are pretty pointless IMHO.

I'm assuming this is what pisses you guys off? Fine I guess, but it's not worth creating thread after thread that look like there's actually something to discuss here.