For the record, I painted my PS after stripping it and powerwashing it. I used Rustoleum 1200 degree paint from Home Depot for $3.94.

Here is the pic of the downpipes next to each other. You can see how the PS is actually larger after the secondaries merge. The PS is 2.25" after the merge. Its stamped on the pipe.
http://www.tcnj.edu/~sysant2/new/HSPSDPs.jpg


Here is a view of the flange at teh secondary where the primary will connect on each. Strikingly similar.
http://www.tcnj.edu/~sysant2/new/HSPSflanges.jpg


Here is a shot of both primaries together. The HotShot does not have an AIV outlet, and the EGR outlet on top bulges right into the #4 cylinder outlet. I don't know if they did that on purpose, but it looked like it would create some turbulent flow. On the Pacesetter however, there was nothing protruding into the runner, just a hole for some exhaust to exit into the EGR system.

On the other hand, the HS is noticeably thicker. Its primaries are rounder, whereas the PS's are more oval, just like the exhaust ports themselves. You can see the quality welds around each runner on the HotShot, but on the Pacesetter there are only 2 or 3 tackwelds on the runners. Nothing a few minutes with a welder couldn't fix though. Otherwise, the bends are basically identical.
http://www.tcnj.edu/~sysant2/new/PSandHS.jpg
http://www.tcnj.edu/~sysant2/new/Pacesetter.jpg
http://www.tcnj.edu/~sysant2/new/HotShot.jpg

Finally, a shot of the HotShot, Pacesetter and the Primera JDM header from wolfcri's motor.
http://www.tcnj.edu/~sysant2/new/PSHSJDM.jpg

There you have it. Decide for yourselves! Anyone wanna host a dyno session and pay for us?? :p

The secondaries were made smaller somewhere during Hotshot's 2nd gen design because it made more power than the 2.25" secondary. The primaries were made larger (1.75" vs. 1.625") for Hotshot's 3rd gen design.

Also remember that the Pacesetter header is an exact duplicate of one of Hotshot's previous generation header design right down to fitting into one of Hotshot's jigs (but you probably knew that already.)

hey bro, since you have both header, get it dynoed and let us know what you get!!! i put money on the Hotshot but not by much.

a lot of us want a gen 5, but if the Pace makes similiar power, you can save a lot of us some money.;)

If you look at the secondaries where the two tubes merge, the hotshot has a smaller taper angle which should create less of a pressure drop and therefore more power. Whats that excuse for a flex pipe on the PS? The EGR attachment shouldn't make much difference. But one thing we learned from the older HS designs with the thiner primaries.... they crack eventually!

NismoSER, that was an excellent post. This should be archived because of all the Pacesetter vs Hotshot questions.

The smaller secondaries would maintain exhaust velocity. This would help the scavenging effect.

It has been noted in the past that the stock catalytic converters on B13's are 2.5 inches on the inside.

Relaying back to the scavenging effect, and how HotShot went with a smaller secondary and as a result made more power, do you think more power can be had by either

a) Fitting a cat that is 2.25 or a little less on the inside
b) Using a test pipe 2.25 or a little less (for race use only, of course).

??

Oh, and the Hotshot is not mine. Sometime this summer, my garage became a storeroom for SR20 parts including: an SR20 motor, tranny, starter, alternator, Hotshot header, and various bolts and nuts from an interior.

We are too poor to dyno, so we'll have to settle for a track run. Right now, my SE-R and NismoNx2000's car have run basically identical times with nearly identical mods at Englishtown. His personal best was 15.320, mine was 15.399. A follow up night at the track with custom cold air intakes on a wicked hot and humid night yielded a 15.4 for both of us, on a night where everyone was complaining of running .3 slower than usual.

So, expect to see some track results from the headers in a few weeks. We'll be sure to keep everyone posted. We're being hopeful for around 14.7-14.8ish.

I'd like to add some pics to this if I may. It was during my header swap. I took off the PS to put on a 3rd gen HS.

http://garnet.acns.fsu.edu/~sgg8661/headerinstall/downpipes1.jpg
The third gen looks similar to NismoSER's 5th gen. Its just a little different where the 2 pipes go into one.


http://garnet.acns.fsu.edu/~sgg8661/headerinstall/3lineup.jpg
Here's a 3rd gen HS, Pacesetter, and 2nd gen HS. The second gen HS was pretty identical to the Pacesetter. The secondary I have is from a 3rd gen, so I never tried it with the second Gen HS primary. But I'm guessing it wouldnt make as much power, since the primary and secondary are smaller.

However, I did notice a difference after I put the HS header on, maybe because my pacesetter had a hole in the secondary near the flex joint. But the HS has more power. Again, for the price, you cant beat a Pacesetter.

On a side note, I will dyno soon, to see what difference the HS made over the PS.

Cool pics Serban! I thought the flex pipe on the HotShots used to be longer. I wonder why they made it shorter....

Originally posted by NismoSER
Cool pics Serban! I thought the flex pipe on the HotShots used to be longer. I wonder why they made it shorter....

Ah yes, thats another obvious difference I overlooked. Not sure why they changed it, maybe better flow. the inside of the flexpipe has ridges, so if you cut half of the flexpipe off you have a more smooth surface....or maybe I'm just talking outta my ass :p

would it be a good thing to add in a burns merge collector to my PS header. http://www.burnsstainless.com/MergeCollectors/mergecollectors.html
I think it should help some.for a not to expensive upgrade.

WEll, Saturday is the day. Chris will be installing his pacesetter and i will be installing the hotshot. We will let everyone know the after results, which will be sotp, but its better then nothing.

John

[QUOTE]Originally posted by NismoNx2000
[B]WEll, Saturday is the day. Chris will be installing his pacesetter and i will be installing the hotshot. We will let everyone know the after results, which will be sotp, but its better then nothing.

So, whats the deal? whos car feels faster?

heh, you know what. We never made back-to-back runs. That, and it was raining out. So, we'll find out this weekend. We'll make a few G-tech runs or something and maybe a quick heads-up drag to about 70 or so on a desolate country road. Lord knows i have many of those by my house.

Bottom line is, we are both happy with our headers. :cool:

I would go with the Hotshots Header. It is higher quality compared to the PS. Take a look at the welds for instance, the HS Is very clean, the welds seem to have good penetration, not to mention they are welded with Tungston inert Gas as apposed to Metal Inert Gas like the PS. The welds on the PS have horrible penitration, it looks like it's laid on top, like bubble gum. It's obvious you are paying for quality, not too mention hotshot's R/D time with this header. How much R@D did PS put into their copy of the hotshot's header? I hope anyone interested in getting one of these headers takes into account what I stated above, it may save you a headache in the future (Broken Welds, Cracking)...

Go Pacesetter!!!!!

LOL!!!!

Hey, you guys did a GREATjob on that post!!!!

Bigger secondaries kick ass!!!!!

Originally posted by SmoothDaddyFig

Bigger secondaries kick ass!!!!!

Heh... No they don't... Otherwise, Hotshot would have stayed with the original secondary size. ;)

Well, i think my ecu has finally adjusted to the hotshot. The car pulls like crazy now to like 7250 rpms. Power is quite abundant from about 3500 on. Throttle response and torque is definately felt and much more reponsive. I do have a slight leak where the secondary connects to the cat which i stated in my other post. Which may even cause a little bit less power results. if it is causing any loss in power, its hard to tell. IM gonna tighten up the bottom when i get a chance. Im definately impressed with the hotshot. Now, i guess the only way we will be able to tell for sure which one is producing the best power is by taking them to the track. Like chris said, we will try some desolate/safe stree races and g-tech runs to get a baseline. However, The track will be the best judge next to a dyno.

Originally posted by RollcageSR20
Heh... No they don't... Otherwise, Hotshot would have stayed with the original secondary size. ;)

Them Pace people know their shit man. :rolleyes: ;)
Till someone with the same mods+HS header can kick my ass Im sticking to my story. :D :cool:

Originally posted by SmoothDaddyFig


Them Pace people know their shit man. :rolleyes: ;)
Till someone with the same mods+HS header can kick my ass Im sticking to my story. :D :cool:

Right on! ;)