Nope the ONLY CARB Approved ones are the JBA's

Richard

 

I'm not sure about that. The local Ford dealership is putting together some fairly nice looking GT's with the FRPP drag pack and the FRPP handling pack. They have C.A.R.B. stickers on their FRPP cold air kit heat shields and I can't imagine a Ford dealership selling street cars that can't pass smog in California.


BTW I just recieved my JBA titanium, ceramic coated shortys tonight.

 

Thanks guys, appreciate it.

Mike

 

I have FRPP Shorties on mine. To me, it was more of a sound than a performance improvement.

 

Well if the FRRP ones have been given a CARB EO number it has happens recently. Last time I checked the JBA's were still the only ones that had it. Also just because a local Ford Dealership is installing them doesn't mean they are still CARB approved. I know of Ford Dealership that were installing some of there other FRRP parts prior to being approved.

So I went and checked out the Ford Raicng pasrt website and it seems the Drag Pack has a cARB EO number yet the header by them selves do not.

http://www.performanceparts.ford.com...tKeyField=8021

http://www.performanceparts.ford.com...tKeyField=9401

Richard

 

Hey Rich congrats on your coated shorties.......

I have the coated FRPP shorties and noticed no big difference in either sound or performance, and I'm blown...... I was hoping that having a blower would bring more out of the shorties than it did.

 

hi guys,
can someone explain to me equal vs. unequal shorty headers?

which is better and why?

FRPP is unequal and jba/gibson are equal length.....

thanks!

 

Hey Yao, American Racing Headers are the best IMHO (and others on here will agree). Their design, fitment, craftsmanship and customer service are just top notch. Plus the power gains are really impressive. In the most recent issue of Mustang Enthusiast, they installed them in a car, and got almost 30 hp with a tune. What a mod for the money, PLUS you get killer sound.

 

Excuse me but we are talking shortys here.

 

How are JBA's shorties carb legal and those from FRPP not?

 

JBA paid to have theirs certified and FRRP did not

Richard

 

I'm no expert but I'll try to explain my understanding.....

Equal length are supposedly better because each cylinder would have the same amount (length) of piping to flow through, therefore equaling backpressure between all cylinders. They are more expensive because of the design and material. But I can say that I've never seen or heard of anyone ever really testing the true benefits of equal compared to unequal.

 

OK so where do I find my states(oregon) emmisions requirements, since that'll help me decide which way I want to go. I'm leaning towards planning shorties due to price(especially install since shorties can be done at home) but if LT's are a possiblity for me I may try to fit it in the budget.

 

Yeah Rich, I was answering Yao's question, hence the quotation over my post.

 

I cant find arh shorties on thier site or anybodyelse's only LT's.

 

++++1 on ARH

and for the shorties the answer is just plain NO

 

You don't live in Kalifornia!

 

No I live in eastern Pa. I have American Racing longtube headers on my car.

Oh yea I forgot you guys have that Ca. problem. My condollences.

 

To add to the explaination. The length is usually adjusted to suit a particular RPM band so that the tuned length complements the frequencey of the exhaust to promote better flow (scavaging), this is coupled with having the exhaust pulses entering the header collector equally spaced out. On a V8 this is generally not easy to do w/o having one cylinder from each bank crossover to the opposite collector. The other thing going on in the exhaust system is reversion or pressure puses going backwards thru the system. If timed righ it can helop ... or not. The x or h pipes help some in this regard.

In the case of the JBA equal length shorty, true its primary length is not long enough to help out the high RPM, but it does suit mid range, and it dues ensure at least some of the exhaust pulses are timed well when they get to the collector, thereby promoting scavaging.

 

Don't worry, your state will catch up. LOL