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old school
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Discussion Starter · #1 ·
I swapped out my Pacesetter today for the OBX/SSA header. I feel a power loss below 5k and above 5, its about the same. I'm not happy with it. I know Jetpilot's dyno looked promising but for whatever reason, this thing does not feel as powerful as the PS. Maybe its because he only had an intake before the header install. Looking at the two side by side, the OBX has bigger primaries but the PS has a bigger secondary to cat pipe. I have all the other normal bolt ons, 2.25" exhaust, HS cai, 91 intake cam, UR pulleys. I didn't reset the ecu but still... I can't believe the difference. I don't see how it would, but if it doesnt improve in a week, I might put the PS back in or try the PS secondary pipe. It sucks not having that around town punch that I felt with the PS and the other parts. They seemed to work together great.

Has anyone else gone from a PS or HS to the OBX? What are your thoughts?
 

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P10 Geek
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That's interesting because the Pacesetter has terrible low end torque. Look at any PS dyno run and you'll see similiarities.

The PS has less power than the stock manifold under 3000 rpm's. With the OBX having a 2" diameter, you should be gaining low end torque not losing it.

Same principle as the Hotshot header having a 2" secondary on the Gen 5 compared to the 2.25" secondary on the Pacesetter.

And since the OBX is "similiar" to the Gen 5 in the overall design :eek: you should definately feel a difference between the two.

My G20, already being as heavy as it is, became a complete dog when I installed the PS until around 3200. Then the power kicks in. It feels like it drops off around 6000 rpm's.
 

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old school
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Discussion Starter · #3 ·
When I'm talking about low end, I should say midrange... I lost significant enough to feel the difference in the 3000-5000 range. I was thinking it may be due to the bigger primaries on the OBX than the Pace and then the step down that we talked about on the OBX?? I didn't grind it out at the secondary flange like I originally had planned. Maybe the ECU needs to adjust or be reset? I have no idea.

What I'm trying to describe is before with the pace, if I held it around 3k and then floor it, it would just go instantly and keep pulling good until about 7k. Now, it feels sluggish, it feels like there's a lag and then it climbs slower to 7k.
 

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I know one of the guys reported a better butt dyno feel by using the obx primary with the pacesetter secondarys. But being it's a copy of the HS gen 5 I'd leave it as is.
 

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actually chris i personally would try the OBX primaries with the PS secondary. i think this set-up might be PIMP. also i would reset the ECU (doubt is has much to do with it, but it couldn't hurt) and wait a few days.

i want to try the obx primary with the PS/HS secondary personally, but i haven't been able to locate any secondaries being sold alone. i think that this set-up might give the best overall numbers throughout the powerband.

if you decide to try out this combination please post reports of butt dyno's and such as i am quite curious about this.
 

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old school
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Discussion Starter · #7 ·
Ok guys, I'll try the old reset and wait a few days to see how it is. I'll swap the secondary pipe then if nothings changed.
 

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chris13bsr20 said:
I swapped out my Pacesetter today for the OBX/SSA header. I feel a power loss below 5k and above 5, its about the same. I'm not happy with it. I know Jetpilot's dyno looked promising but for whatever reason, this thing does not feel as powerful as the PS. Maybe its because he only had an intake before the header install. Looking at the two side by side, the OBX has bigger primaries but the PS has a bigger secondary to cat pipe. I have all the other normal bolt ons, 2.25" exhaust, HS cai, 91 intake cam, UR pulleys. I didn't reset the ecu but still... I can't believe the difference. I don't see how it would, but if it doesnt improve in a week, I might put the PS back in or try the PS secondary pipe. It sucks not having that around town punch that I felt with the PS and the other parts. They seemed to work together great.

Has anyone else gone from a PS or HS to the OBX? What are your thoughts?
Hi there,
I dont know what to say since i am not that expert yet in tuning. My car is European and i dont know if there is a difference between the engines or ecu's when compared to the cars in US. I didnt reset the ECU.... So to be honest i dont kknow what it is... Maybe the OBX/SR header didnt work out for your car. I dunno ... Good luck with the tuning

Jairo
 

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hey "chris13bsr20" by this post i am guessing our deal is off. if not let me know because i am still interested in your PS. either way just let me know...PEACE!!
 

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chris13bsr20 said:
Yeah, it feels the same. I'll probably try the pipe swap on Monday.
You kow the only way you'll be able to trually test the difference is to go to the track and run it! You sig states:

97 SE-R (daily driver) [email protected]

If that was with the same mods and the Pacesetter, there is your baseline. Go to the track and run your car and see what your outcome is. If it increases, then you know that it was well worth it.
 

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old school
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Discussion Starter · #14 ·
I know. It was the same mods and the Pace except the other variables that have changed since are now I have lowered the car with -1.5 camber on the front wheels and added urethane MM inserts. The night I ran the 14.5,14.6,14.7 it was 45 degrees and pretty much ideal conditions.

I'm not making excuses at all because the track opens again this month but I just think they are too many variables to test the differences of just a header on a 1/4 mile run. A dyno would be the true test but I'm not that concerned about it to find a dyno for this car.
 

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Jesus shaved
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I've got the SSA header and I tried what you did, hold it around 3k then floor it. It doesn't lag a bit and just shoots ahead pulling until 7k. I didn't have a pacesetter on before, so I can't tell you how that would feel.

Overall I couldn't be more satisifed with the header, best 150 i've spent on the car so far!
 

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Discussion Starter · #17 ·
I decided I'm going to just stick with it. I may take it off and grind around the flanges a bit but thats about it. Maybe mine was flawed... more than the others.
 

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chris13bsr20 said:
I decided I'm going to just stick with it. I may take it off and grind around the flanges a bit but thats about it. Maybe mine was flawed... more than the others.

Could be...

Anyone else wanna sound off with impressions of their OBX/SSA header?
 

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I'm very happy with mine. Installation was done in about an hour and a half. After a few months the finish still looks great. HP gains feel very good with minimal loss of power under 3000 and nice gains up top. I have not driven a car with a hotshot so I can't make a fair butt dyno comparison. My wallet/bank acct is very happy though! I had a few experienced exhaust specialists tell me that the header is very high quality in construction and should last a long time, they were shocked that it only cost me $150.
 

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Discussion Starter · #20 ·
Did you guys inspect your header? I'd like to know if you had this huge lip that mine did. If you put your fingers through the flange at the end of the primaries on the one side, I can feel like a 1/4" lip going half way around the pipe. This has to be causing a block in flow. This is aside from the other pocket on the secondary flange where the pipe wasn't flush. So that is two places right before and after the primary to secondary flange that mess up the flow.
 
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