Headers installed and have some questions!

Doc · Oct 19, 2001

HVE Headers installed today with high flow cat. The sound of the car is much louder. The bottom end torque is definately less. Here's what's confusing me, I don't feel like there is much more HP even in the higher RPM's, but the tires are breaking loose sometimes as the RPM's go up. So I'm not sure what to think??? I noticed a difference when I put on the 2.25 inch cat back custom exhaust and magnaflow muffler, and a larger difference in HP when the BBTB was installed, but After installing the Headers (4 into 1, I do have a 5 speed) It seems that It took away. Why is this??? What can I do now? All O2 sensors are in place as well!
<img src=icon_smile_question.gif border=0 align=middle><img src=icon_smile_question.gif border=0 align=middle><img src=icon_smile_question.gif border=0 align=middle>

Going from point A to point B in a Hyundai! I may be old school, but have been driving Hyundai's for many years!

hyundaixtreme · Oct 19, 2001

Sorry I don't have an answer to your question, but I was just wondering how long it took for you to get the Headers once you ordered them from HVE.

Doc · Oct 19, 2001

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>
Sorry I don't have an answer to your question, but I was just wondering how long it took for you to get the Headers once you ordered them from HVE.
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I ordered them through Phantom Racing and it took about 1 month. It would have been here sooner if it wasn't for the wait on the quick shifter and BBTB.

<img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_big.gif border=0 align=middle>

Going from point A to point B in a Hyundai! I may be old school, but have been driving Hyundai's for many years!

Decrum · Oct 19, 2001

Phantom racing says they have 4-2 headers for the accent, is this synonymous to 4-2-1 headers?

Sorry man, can't answer your question, you should feel comparitvely big gains!

Rudy · Oct 19, 2001

ok rob correct me if im wrong but 4-2-1 provide high end power and 4-1 provide low end power. this may be why you havnt notice anything.

I drive a bumble bee

hyundaixtreme · Oct 19, 2001

Anyone have a link to Phantom Racing?

Lantra · Oct 19, 2001

I thought 4 2 1 headers provided all around power and 4 1s provided Highend power.

Silly Ricer, Hondas are for kids!

4doorGL · Oct 19, 2001

Rudy, other way around.

A 4-2-1 header will increase your low-end power (aka torque) while a 4-1 will produce a result generally felt over 4000 RPM.

How high are you revving your car to try and feel a difference?

<img src="http://www.hyundaiperformance.com/upload/4doorGLSig.gif" border=0>

Rudy · Oct 19, 2001

dammit i knew it was the other way around. <img src=icon_smile_big.gif border=0 align=middle>

I drive a bumble bee

Doc · Oct 19, 2001

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>
How high are you revving your car to try and feel a difference?
[/quote]

I don't feel a difference at all when the RPM's go up! I'm redlining it at 6,000RPM's.

Hyundaiextreme,

Here's the link www.phantomracing.net

<img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_big.gif border=0 align=middle>

Going from point A to point B in a Hyundai! I may be old school, but have been driving Hyundai's for many years!

Doc · Oct 22, 2001

C'mon doesn't anybody have an idea??? If not, they're coming off.
<img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_big.gif border=0 align=middle>

Going from point A to point B in a Hyundai! I may be old school, but have been driving Hyundai's for many years!

4doorGL · Oct 22, 2001

Before you take them off and send them back think about it a little bit more. There probably is a difference there, just not as much as you'd hoped for.

Without seeing any dyno results, we can't say if it gave you power or lost it.

<img src="http://www.hyundaiperformance.com/upload/4doorGLSig.gif" border=0>

EnricoPalazzo · Oct 22, 2001

Hmm, well i got my Hve Throttle body and Hve 4-1 Extractors and felt mayb the tiniest difference up in the rev range and def felt the lost power up high.

So i was also upset with my mods.
Worst was that i got my car dynoed and had 53.5kw at wheels with
2.25inch exhaust
Hve throttle body
Hve 4-1 Extractors
CAI

It seems all these mods gave me an extra -.5kw at wheels.

So I am very sad.<img src=icon_smile_dissapprove.gif border=0 align=middle>
Btw i just got my car chipped today and it feels more responisve throughout the rev range

Doc · Oct 22, 2001

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>
Before you take them off and send them back think about it a little bit more. There probably is a difference there, just not as much as you'd hoped for.
Without seeing any dyno results, we can't say if it gave you power or lost it.
<hr height=1 noshade id=quote></BLOCKQUOTE id=quote>

Yah, I know. However, the bottom end torque lost is much greater than any HP increase, if any, at top end.
<img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_big.gif border=0 align=middle>

Going from point A to point B in a Hyundai! I may be old school, but have been driving Hyundai's for many years!

Doc · Oct 22, 2001

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>
Hmm, well i got my Hve Throttle body and Hve 4-1 Extractors and felt mayb the tiniest difference up in the rev range and def felt the lost power up high.

So i was also upset with my mods.
Worst was that i got my car dynoed and had 53.5kw at wheels with
2.25inch exhaust
Hve throttle body
Hve 4-1 Extractors
CAI

It seems all these mods gave me an extra -.5kw at wheels.

So I am very sad.<img src=icon_smile_dissapprove.gif border=0 align=middle>
Btw i just got my car chipped today and it feels more responisve throughout the rev range
<hr height=1 noshade id=quote></BLOCKQUOTE id=quote>

Tell me more about the chip you had installed do they make them for the LC Accent 2000 1.5L SOHC? Also, did it add back what was lost from adding the headers as far as torque goes? Thanks.
<img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_big.gif border=0 align=middle>

Going from point A to point B in a Hyundai! I may be old school, but have been driving Hyundai's for many years!

greek · Oct 23, 2001

Doc,
How was the sound with the Phantom Racing heraders, and do you think they are as good as others.The price is the cheapest so far..
Gus

4doorGL · Oct 23, 2001

Enrico and Doc, you have to remember that once you get all these mods to your intake and exhaust systems, you need to tune your air/fuel ratios to make sure you're getting enough fuel to go with all the extra air you're cramming into the engine.

I'm not surprised you saw such a gain when you chipped the car.

<img src="http://www.hyundaiperformance.com/upload/4doorGLSig.gif" border=0>

EnricoPalazzo · Oct 23, 2001

4Door, i knew that the chop would help, although i still suspect that my a/f ratios need tweaking.
Maybe a RFPR is needed.

EnricoPalazzo · Oct 23, 2001

I dug this up 4 u Doc-
THE DYNO SHOP Inc. http://www.dynoshopproducts.com/

17305 Pine Ridge Rd Suite #10
Ft. Myers Beach, Florida 33931
Tel 941-437-1420
Fax 941-437-1421
THE DYNO SHOP
Refer: Phillip Babcock
[email protected]

Doc · Oct 24, 2001

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>
Enrico and Doc, you have to remember that once you get all these mods to your intake and exhaust systems, you need to tune your air/fuel ratios to make sure you're getting enough fuel to go with all the extra air you're cramming into the engine.
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4doorGL:

Yes, that's what it seems to be according to Phantom Racing and RPW. According to them something about the computers in the 2000 models is different than previous years and they feel the engine isn't getting enough fuel. 2 things need to be purchased a air/fuel ratio meter and an adjustable fuel pressure regulator. It would have been nice to know this up front!
The headers and aftermarket cat is now off the car! Now I need to decide if I will purchase those 2 items and have the headers installed again???

Enrico:

Checked out that site called the Dyno Shop. They're fuel/oxygen ratio sensor was over $1000.00 US dollars,

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Greek:

The headers look good and are super loud, no doubt (They even came with the 02 sensor installed). The whole car resonated, seats shook, and windows vibrated as the RPM's went up. To loud for my liking though!

<img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_big.gif border=0 align=middle>

Going from point A to point B in a Hyundai! I may be old school, but have been driving Hyundai's for many years!

Headers installed and have some questions!

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