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PPE Long tube headers or HFC+Headers

22 posts in this topic

Posted · Report post

from which one can I get more power 

Long tube headers OR Hfc + headers 

anyone running long tube headers please share your experience 

cheers 

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Posted · Report post

Long tube headers (no CAT's) will return more power if you have the ECU tuned

It's illegal to remove the CAT's and could cost you $10k if caught

Most people (USA) report more noise and smells with long tube headers

 

A good set of equal length headers and HFC's + an ECU tune does return a good result

 

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Posted · Report post

Hmmm but how the cops gonna check it?

i have been stopped because rego no couple of times but they didn't check anything like exhaust noise

so you reckon long tubes are better than HFC and headers power wise?

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Posted · Report post

They will be able to tell from the smell, which will cause them to issue you with an EPA notice so they can inspect it. Without a tune or cats your car could pop flames on downshift and lift-off. Your rear bumper will have soot on it as well. It's pretty easy to pick a car without cats, for example:

 

IMG_1352.thumb.JPG.45ae2b7d0d26b702709cc

 

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Posted · Report post

Makes sense thanks for the suggestion mate 

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Posted · Report post

Also tuned cars dump a grey fuel haze behind them (when you open the throttle) - it's easy to spot - makes you an easy target for further inspection

My friend carbon wrapped his bonnet, it looked racey, the NSW cops grabbed him for a random inspection, he had to follow them to an inspection center, doors, boot & bonnet all opened, car on hoist, exhaust inspected.  

In VIC a guy with a brand new Golf R was pulled over for a random breath test - as he drove away the cop decided the car was too noisy and filed a report - he received a notice in the mail to have a noise inspection - caused him months of grief (VW assisted as stock car has compliance)

It's so much easier to stay legal, headers, HFC & ECU tune will please you and only be a small % behind long/test tubes

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Posted · Report post

hmmmm only option left is header with hfc's 

hopefully will get some power from these with uprev ?

 

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Posted · Report post

Once you do headers, HFC and ECU tune you won't want to drive stock 370's - it's easily noticeable 

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Posted · Report post

A bit off topic... What's the difference bet HFC's and straight pipes?

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Posted · Report post

Straight pipes are just that - nothing more than pipes, they eliminate the CAT (which is illegal)

CAT's have a honey comb design - see the photo below

Normal street car CAT's have 600~800 cells and are restrictive

HFC's (High Flow Cat) have ~200 cells

(there is even a 100 cell motorsport CAT)

Metallic_substrate_catalytic_converter.j

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Posted · Report post

Went for just HFC no big gains on headers actually lets see

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Posted · Report post

Straight pipes are just that - nothing more than pipes, they eliminate the CAT (which is illegal)

CAT's have a honey comb design - see the photo below

Normal street car CAT's have 600~800 cells and are restrictive

HFC's (High Flow Cat) have ~200 cells

(there is even a 100 cell motorsport CAT)

Metallic_substrate_catalytic_converter.j

Thanks for this info Martin!

Went for just HFC no big gains on headers actually lets see

Which brand of HFC did you get?

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Posted · Report post

Invidia 

Let us know how it sounds once you get it installed?

Which exhaust are you running?

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Posted · Report post

Running the same brand mate INVIDIA 

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Posted · Report post

Yep, look good but over $4K there are better options.

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Posted (edited) · Report post

Yep, look good but over $4K there are better options.

I think it will prob be more like 5k landed!

 

What other option you mean BG, PPE RHD LTH?

Edited by JJ 370

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Posted · Report post

Stillen shorties with HFC is one alternative. also Z1 MotorSport shorties plus HFC

There is no doubt that Long Tube headers perform better but they lack cats and that can cost you a lot of money if caught by officialdom. If a pure race car, then yes, they are the ultimate.

If you want bragging rights for the most expensive headers (remember, you still need the rest of the system) then be my guest .... but I would not pay $6-8K for headers and the rest of the exhaust system.

 

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Posted · Report post

I ended up with Top Speed Pro headers, needed some modification to fit RHD along with Berk HFC. With the Motordyne catback its loud and sounds really good but also pass emissions etc i only bit the bullet with the headers and associated labour to finish the exhaust system before planning a tune

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Posted · Report post

I ended up with Top Speed Pro headers, needed some modification to fit RHD along with Berk HFC. With the Motordyne catback its loud and sounds really good but also pass emissions etc i only bit the bullet with the headers and associated labour to finish the exhaust system before planning a tune

let us know what your number are after the tune :)

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Posted (edited) · Report post

$6-8K for headers and the rest of the exhaust system.

For that money I would rather put that towards SC minus the tune kit usually supplied through STT [Paul] 7k AUD landed [pending on the current exchange rate], you can still run the stock CBE,CATS,CAI & headers which is not ideal but would still out perform just HFC,headers,CBE and a tune by far. Granted you still have to pay for Install cost and a tune but worth the performance gains.

That's assuming that you have already upgraded your clutch and have an oil cooler installed.

Edited by BEN313

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