US Headers & Exhausts NA

gslender · Postby **gslender** » Mon Aug 18, 2014 5:00 pm

Dupain wrote:Give me a reccomendation on a 4-1 to buy.

I'm not sure how hard you looked, but OBX (another low cost brand) also sell a 4-1 header for what looks like ~ $200 USD
http://www.obxracingsports.com/products.php?pk=1763#
...at least this product, actually looks like a 4-1 equal length/tuned header.

What you've bought looks like an expensive unequal length header !?

One thing that has me puzzled, is why would they go to the extra effort of that cyl 1 extra long primary if they didn't think it was needed. I mean it looks stupid and certainly against any common approach to header design, but you'd have to ask - why? The additional time/effort and extra steel, but what for?? What were they thinking and why not just build it like any other header. Was the goal to attract people who don't know any better and/or think... oooh, big curly pipes... must go faster with big curly race pipe... yeah, me must have them!

G

hks_kansei · Postby **hks_kansei** » Mon Aug 18, 2014 5:36 pm

I almost wonder if the header they designed was for another car with the exhaust ports on the opposite side of the head (so super long #1 would actually be #4), if that was the case it may have been as simple as they just mirrored the collector position without also mirroring the primaries?

sailaholic · Postby **sailaholic** » Mon Aug 18, 2014 5:52 pm

I had a tuned Apexi 4-1 with a super spiral collector as did Plohl.

We both sold them for 4-2-1 designs as they are better suited to cars that see the street.

Your looking at this from a straight chemical engineering / fluids procession point of view and not considering the effect on the mechanical system of an internal combustion engine.

Not sure where you were going with multinational / vs backyard comment.

tbro · Postby **tbro** » Mon Aug 18, 2014 7:49 pm

Dupain wrote:
ManiacLachy wrote:Yeah, Danny has no experience and doesn't know what he's taking about at all. Certainly isn't an expert. /sarcasm.[/quote

The bullies on this thread, do you actually drive/ mod your cars? Or just park it and talk shiit all day on the forum?

Oh!!! look at that, the way they should be

Masta been there for the BBQ I suppose, My car, I built it

You would want to hope I know something about MX5s

And BTW, the only 1.6 in the field, 3rd in 2f at that meeting, the rest of the field, Prodsport 1 hour 2010

Yes we were lucky, but hey smartarse, at least I do it.

Have a nice day

Dupain · Postby **Dupain** » Mon Aug 18, 2014 8:05 pm

Looks ordinary.

Jeo · Postby **Jeo** » Mon Aug 18, 2014 8:19 pm

(unrealted, but holy crap I'd almost forgotten about Boxxy)

sailaholic · Postby **sailaholic** » Mon Aug 18, 2014 8:30 pm

Dupain wrote:Looks ordinary.

Lol. I hope for your sake this is all just a big troll.

Otherwise your just rude and pig headed.

Pamex · Postby **Pamex** » Mon Aug 18, 2014 8:36 pm

Dupain wrote:How many here have 4-1 headers on their 5? ZERO.

The bullies on this thread, do you actually drive/ mod your cars? Or just park it and talk shiit all day on the forum?

I'm bored, so why not.

In response to your first line here... so what if any of us have 4-1 extractors on our cars? Does that mean we don't understand the theory behind them? I'm paid to specialise in certain gearboxes. Does it mean I have one on my car? No. Does it mean I know nothing? No.

On the second comment, you're arguing with some very knowledgeable people here, and some are paid to specialise in this area. Park it and talk sh*t? Mine has 450,000km on it, and I'm currently doing a ground up resto. Every. Single. Component and nut and bolt refreshed. I'm not alone, most people in this thread have done a lot of work with MX5s.

That said though, you're adorable. Keep fighting the good fight.

ManiacLachy · Postby **ManiacLachy** » Mon Aug 18, 2014 9:01 pm

Remember, this is the guy who gave up on an aftermarket wheel install :roll:

Pamex · Postby **Pamex** » Mon Aug 18, 2014 9:09 pm

Wait, how did I miss that?

Nevyn72 · Postby **Nevyn72** » Mon Aug 18, 2014 9:31 pm

Pamex wrote:Wait, how did I miss that?

Don't know, it was quite entertaining at the time...... :mrgreen:

viewtopic.php?f=28&t=64677

Pamex · Postby **Pamex** » Mon Aug 18, 2014 9:45 pm

Holy hell! Now I understand how coffee cups need to say "Contents may be hot"

greenltd · Postby **greenltd** » Mon Aug 18, 2014 9:59 pm

You got it. .......

Dupain · Postby **Dupain** » Mon Aug 18, 2014 10:19 pm

Pamex wrote:
Dupain wrote:How many here have 4-1 headers on their 5? ZERO.

The bullies on this thread, do you actually drive/ mod your cars? Or just park it and talk shiit all day on the forum?

I'm bored, so why not.

In response to your first line here... so what if any of us have 4-1 extractors on our cars? Does that mean we don't understand the theory behind them? I'm paid to specialise in certain gearboxes. Does it mean I have one on my car? No. Does it mean I know nothing? No.

On the second comment, you're arguing with some very knowledgeable people here, and some are paid to specialise in this area. Park it and talk sh*t? Mine has 450,000km on it, and I'm currently doing a ground up resto. Every. Single. Component and nut and bolt refreshed. I'm not alone, most people in this thread have done a lot of work with MX5s.

That said though, you're adorable. Keep fighting the good fight.

Problem with you is think you know but in reality you are just copying what others do.

Dupain · Postby **Dupain** » Mon Aug 18, 2014 10:27 pm

ManiacLachy wrote:Remember, this is the guy who gave up on an aftermarket wheel install

Wheel was done. Keeping interior stock. There is actually no clear instructions for the "Classico" wheel. Check it out, plenty also had the same questions and I provided useful advice. A few have thanked for the tips.

Don't see you guys contributing to the forum in a positive way, which is really sad. Don't see many reviews from the same knockers. Your problem not mine.