HKS Super Manifold vs Catless UEL

[weederr33]

Originally Posted by Howaitoguru

I wanted something similar to the sound of my GReddy catback without having to worry about rust and better ground clearance.


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I've never heard the GReddy as I've never considered them. But yeah the Spec-L with carbon tips sounds pretty good IMO.

[Howaitoguru]

Originally Posted by weederr33

I've never heard the GReddy as I've never considered them. But yeah the Spec-L with carbon tips sounds pretty good IMO.

Awesome hopefully I can get it soon after I get the headers. What do you have?


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[weederr33]

Originally Posted by Howaitoguru

Awesome hopefully I can get it soon after I get the headers. What do you have?


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The Legamax Sport and the R-Spec front pipe. I sold the headers from the R-spec set up since I already had the Cosworth headers.

[Howaitoguru]

Originally Posted by weederr33

The Legamax Sport and the R-Spec front pipe. I sold the headers from the R-spec set up since I already had the Cosworth headers.

Did you feel any gains at all from adding the hks stuff? Or is it more placebo?


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[weederr33]

Originally Posted by Howaitoguru

Did you feel any gains at all from adding the hks stuff? Or is it more placebo?


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Placebo for sure. But it helps out still. I probably could have skipped it all except for the headers, but I enjoy the sound far too much. If I wanted "pure gainz", I would have jumped right to a supercharger.

[jflogerzi]

Originally Posted by weederr33

Placebo for sure. But it helps out still. I probably could have skipped it all except for the headers, but I enjoy the sound far too much. If I wanted "pure gainz", I would have jumped right to a supercharger.

Your best bet is to get a header of your choice plenty of solid choices but do not get a header without at least getting the open flash tablet till your rdy to go FI. If you have e85 in your area even better. Personally don't bother with overpipe or front pipe. Then after your headers see what additional sound/volume/tone you want you can add a cat back or axleback.

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[weederr33]

Originally Posted by jflogerzi

Your best bet is to get a header of your choice plenty of solid choices but do not get a header without at least getting the open flash tablet till your rdy to go FI. If you have e85 in your area even better. Personally don't bother with overpipe or front pipe. Then after your headers see what additional sound/volume/tone you want you can add a cat back or axleback.

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Did you mean to quote the other guy? I'm set on my set up lol

[jflogerzi]

Originally Posted by weederr33

Did you mean to quote the other guy? I'm set on my set up lol

Meant to agree with you lol

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[weederr33]

Originally Posted by jflogerzi

Meant to agree with you lol

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gotcha!

[86MLR]

Originally Posted by weederr33

With all due respect, that's a pretty pretentious response to someone asking a simple question. lol Take it easy on the guy.

No disrespect meant

I don't mince words, I assume people can take a critique.

If people do their own research on the hows and whys to things they make better decisions, and know why.

Against better judgement I had a play with a Tomei UEL header, whislt it was better than the OEM catted header, it showed no gains over a decatted (punched) OEM header, apart from being really, really loud.

The best option for overall performance is a good well designed EL catless 4:2:1.

Cats in this car are a major restriction, if you can get away with catless there are excellent gains to be had.

As for highflow cats, if you need to pass emmisions 90% of highflow cats on the market will struggle to pass testing.



Opinions may vary

[churchx]

Highflow cats is mostly marketing term, as "less efficient at cleaning up exhaust gases" / "cheaper of less expensive materials and simpler construction" wouldn't sell as well as "highflow" . Just like some air/oil filters, more often then not they not simply resist flow less, but at expense of compromising main function - actual filtering efficiency.
Highflow cats still may work efficient enough emissions-wise if in stock-like configuration of dual cats, but if it's done for performance .. in my eyes configuration of single high cell count (eg. stock) 2ndary cat left seems preferable to two highflow cats, as it's mostly primary cat in header killing most of performance and requires less efficient header designs for space clearance/packaging reasons, decatting 2nd in frontpipe nets less performance wise.

[86MLR]

Originally Posted by Howaitoguru

How do physics have anything to do with what manufacturers have been putting on vehicles for decades? What’s so flawed about it?


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Physics = basically header design should involve fluid dynamics and thermal dynamics in order to give the best performance.

It's all about scavenging and exhaust pulses.

Lots of info out there, some pretty in-depth, some dumbed down for the general public.

This explains header design well > https://www.enginelabs.com/news/tech...-race-headers/

This is why good headers cost what they do.

The whole UEL header craze was due to initial packaging and cost, it was nothing to do with performance.

And now for the rest of the exhaust, sort of > https://www.exhaustvideos.com/faq/ho...pipe-diameter/

Physics is cool and the horsepower gods love physics

[RToyo86]

I just saw FT86speedfactory's YouTube products video and they only received one HKS super manifold header. I'd be contacting them before handing over any money.

[EAGLE5]

Cat in kart.

[ame]https://www.youtube.com/watch?v=fUtggo8feKU[/ame]

I suggest ACE. Actual proven power.

Or just stock header.

Or if you want sound, any header will do. Just choose your style. Keep the stock exhaust to keep the volume and thrum away but get a nice sound.