Building a SCCA Autox car (ST class)
08-02-2009, 05:40 PM
#31
On a side note: After some research on headers it would seem DC sports and Hotshot (4-2-1) are the best performing headers, however BOTH of these companies stopped making them for the s14. Anyone know where I can still get one? Maybe someone has a used one to sell? Or does anyone know of another brand that is equally as good? (and can back that up with stats on paper/dynos?)
08-02-2009, 08:12 PM
#32
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AH ok I see it now, so you are saying I could just buy the s13 headers and they will fit my s14? And if so, are you sure? (I ask because their site says "1991-1994 s13 only") Perhaps I will call them and ask....
08-02-2009, 09:00 PM
#33
You will end up losing your catylitic converter because the collector is moved down the firewall.
I have a smog exempt sticker/C.A.R.B pending on my chassis that is only for s13 chassis.
08-03-2009, 05:31 AM
#35
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Also, results from the last event:
8th out of 16 in my class with a score of 963 (for those that don't know score is out of 1,000). To get 8th with a 963 is a uncommon, as 963 is a fairly high score so we had a lot of great drivers out that day. 11th out of 43 over all, with same score obviously (my official raw time was 37.069).
Sorry no videos (I am picking out a camera mount soon, so definitely videos for the next event) but here are a few pics:
Oh and my new sig is a pic some "professional photographer guy" took and doctored up a bit.
Last edited by hatrick6; 08-03-2009 at 06:24 AM.
08-03-2009, 06:55 AM
#36
The only header I knowof that allows OBD2 CATS to bolt up where they need to go is with a Meghan racing header and that thing is a POS.
08-03-2009, 07:25 AM
#37
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Yechnically you can use the DC sports header. You just have to chop out some exhaust pipe to fit the CAT lower down the collector. The Hot Shot header is the same way.
The only header I knowof that allows OBD2 CATS to bolt up where they need to go is with a Meghan racing header and that thing is a POS.
The only header I knowof that allows OBD2 CATS to bolt up where they need to go is with a Meghan racing header and that thing is a POS.
08-03-2009, 10:59 AM
#38
OBX is considered a racing header just like the DC sports or HOTSHOT.
OBD2 doesn't allow for a long collector. The CAT essentially becomes the collector, this was done to keep the CAT up to a certain operating temprature.
08-07-2009, 05:24 PM
#39
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Hmmm, well maybe I'll try to find a used DC or Hotshot header and cut it down and re-weld it so that it bolts to the cat.
08-07-2009, 09:23 PM
#40
08-08-2009, 07:01 AM
#41
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Catalytic Converters:
ST, STS:
Catalytic converters may be replaced by aftermarket units. Replacements
must:
1) Be certified for use in that vehicle application by the manufacturer
or reconditioner,
2) Bear correct EPA-mandated labeling,
3) Be of the OE quantity and type (i.e. oxidation, three-way, etc.)
and
4) Be used in the same location(s) as the OE converter(s).
This does allow for high performance replacements, provided
they meet all restrictions herein.
Pertaining to rule number 4, the cat cannot be moved more than 6in from original location. So obviously if I use a header that is "cat delete" like the DC or hotshot and I bolt the cat to it, its going to move the cat 1ft or so (the length of the cat) down stream. This would violate the rules, where as if I cut down the very end of the header (the collector) the cat can stay in the original place. By cutting down the collector do you really thing I will loose that much power?
08-08-2009, 01:33 PM
#42
well.. this is the debate........ if the headers are R&Ded to make this and that blah blah hp.... you are potentially altering the product that was "scientifically" produced.... All I can say is, its better than stock.
should be interesting.
should be interesting.
08-09-2009, 10:10 AM
#43
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That's what I am thinking. Anyways the suspension setup is the next mod, ordering next month (adjustable koni yellows with gc coilovers, eibach springs, and some pillowball mounts which I haven't decided what brand yet) so I have some time to think about what I want to do header-wise since I won't be getting one for a few months.
08-09-2009, 01:48 PM
#45
Last edited by BigVinnie; 08-09-2009 at 01:56 PM.