Thread: HyTech Exhaust Racing Headers -- Good headers? 30+ hp gains

mate, they r custom made headers just like smsp. and wth the price + shipping cost for them, can you justify getting them just for 10kw gains??

Y don't you just get trr from fbi instead? its proven and a lot of the guys here runs it in their car. they r around 700$ NZD. you'll be looking at nearly 2000$NZD for a set of hytech or smsp headers from states inc shipping

My BS Meter just went off the scale. Thats all hyped up marketing. They say they gained 40hp on a del sol. What engine was in the del sol? What headers were on it previously? Was one in a tuned state and the other untuned? You dont know! If you gain 40hp from some bolt on headers, ill eat my honda badge

i tend to agree u might see 10hp untuned from a set of off the shelf headers. something like SMSP u might get a bit more but thay are made to order hence y they are a bit more.

off the shelf headers are all pretty simular in gains

Originally Posted by mr.sky

If you gain 40hp from some bolt on headers, ill eat my honda badge

if they promise it will gan 10hp+ over another extractor

dont mind paying 2k for it

someone once told me they got close to 50hp from a "new" exhaust manifold for their car... (turbo)..

showed me the dyno sheets..

wow i was impressed, same boost too haha.

then i looked @ the af ratios.... wow... wonder where all that power came from

you can only get so much out of an engine due to port velo, tube sizes... and there are SO many virables.

i betcha i could get 20hp out of my car by only changing one virable.... it wont be making more than factory... but it would be making more than it did for the "first" dyno *cough* in 45 degree ambent temp .

anyhow yeh, just becareful, its alot of money, when alot of guys on here are doubting it.... i wouldnt just go ignoring them .

Originally Posted by 2200cc

na don that topic, what are average gains i could expect to see from a set of TRR headers, because if the Hytech are substantialy more, then it will justify the price

with a tune, probably around the 10kw region.

just relise they were using a test pipe not an exhaust system.

Also, we knew that the car was now in alignment and that all headers re-tested would be done so without the power steering and air conditioning belts running off the engine; this was sure to have some effect on power production. Our industry peers agreed upon a rough estimate of +3 to +5 change in power freed up by the removal of the units and the belts that drove them.

read this paragraph ull find all the answers u need

HyTech Exhaust - TEST SET 01
At this point, you've already seen the graph on the previous page, and you've probably already done the math. Yes - we're showing a 51.1hp increase. Yes, that's highly unlikely and it made everyone... uncomfortable. We have to note that the HyTech unit is marketed as a "racing" header and will not fit with the power steering and air conditioning compressor intact; these were removed for our testing of the header. Still, our test procedure stayed the same, our test platform stayed the same, and the multiple runs we did were all repeatable to within 3 horsepower of each other, with power curves following the same lines each time. Like the other headers, the HyTech unit increased low-end torque production to such a point as to negate the effects of the "pre-VTEC" dip in the powerband, and it also straightened the graph to make the powerband more linear after that point. Like the other headers, the standard test procedure was followed, with the same extension pipe mounted onto the header. DISCLOSURE: The pipe was provided to us by HyTech as they were concerned about the possibility of a loss of power due to the relatively short runner length from the collector to the header's exhaust gas exit point. Now, one could easily conjecture that the pipe benefited HyTech the most because they designed it, and that would be true. However, that fact doesn't prove that this was an act of collusion; it rather suggests that HyTech might know a little something about header design that we don't know - hence, their polite suggestion that we use the pipe on all the header tests. Given the design of the pipe (essentially a long test pipe or straightpipe) and the fact that the tests were conducted pragmatically and without bias, we wondered if it might be possible that the header wouldn't make as much power if attached to a complete exhaust system. When we brought all of this information and the dyno charts to our peers and a few industry tuners, however, they all had different opinions...

well the hytec only made 8hp compared to stock on the dynojet and the dc sport made 5hp. go figure.

SO WHICH IS THE ULTIMATE HEADER?
Well, that's hard to say. "Ultimate" as we mentioned before, is relative to exactly where and how you're going to use the product. It is a peak horsepower industry that we live in; at least, it's a peak power industry that has been marketed to you - the consumer - for well over a decade now. And while increasing peak horsepower numbers is a sure sign that something is happening when you bolt on your new header or aftermarket part, it's not necessarily the best thing to happen. Take the DC Sports 4-2-1 header, for example. In both test sets - Test 01 and Test 02 - this particular header wasn't the maximum horsepower producer. It did, however, display a sizeable amount of low-end power in one test and a decent gain in another test. Does that make DC Sports the loser? We think not. Of all the headers tested, the DC headers counted for two of the three tested that had CARB approval. That may seem unimportant right now, but it sure will make a world of difference when your car comes up for mandatory emissions testing and you no longer have access to your stock piece. It takes a great deal of engineering, testing, and re-testing to gain CARB approval AND still make usable horsepower and of all the headers tested, DC Sports was the only one up to that task. On the other hand, a full-race engine builder could care less about CARB approval and may be willing to sacrifice some parts for others in the search for the header that best compliments his/her setup. The power steering pump and air conditioning compressor, among other things, are some of the first things to go in cases like this. So, with all the graphs and numbers and interpretations, what exactly did we learn about our headers?

pays to read all the info then make conclusions

The above just about sums it all up, :thumbsup:

Originally Posted by Cyrus

The above just about sums it all up, :thumbsup:

and there is plenty more info on the site i just took what i thought was relivant

yeap and I have a set of DC sports 4-1 for sale as well!!!

Originally Posted by 2200cc

EVLTEK, how much for the DC spprts 4-1

Originally Posted by EVLTEK

I want $ 699