by "AestheticsInMotion" (aestheticsinmotion)
Published 10/04/2017 at 11:28
by "AestheticsInMotion" (aestheticsinmotion)
Published 10/04/2017 at 11:28
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STARS: 1
I love my Fujitsubo Exhaust. Nice and deep, with some crackling on down shifts, but not too over the top for a stock 4 cylinder. The problem is my header. It’s the stock 24 y.o. Piece and it’s got a few holes in it, which is adding an unpleasant raspyness to the exhaust tone. Should I replace it now, or wait until I go turbo?
Realistically forced induction is at least a year away, so I’d get some enjoyment out of a new header. I could probably sell it later on to recoup some of my losses. What say you Oppo.
Videos so you know what I’m talking about. First video is my buddy in the driver seat. You can really hear the raspyness as I walk closer to the engine bay. Second video is an “in use” sound clip. I know I know... Video orientation
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"davesaddiction @ opposite-lock.com" (davesaddiction)
10/04/2017 at 11:36, STARS: 1
Not all rasp is bad.
Sounds pretty good to me, honestly.
"crowmolly" (crowmolly)
10/04/2017 at 11:36, STARS: 2
Just replace it at this point. Shouldn’t be too expensive or hard. Somebody is bound to be selling a stock take-off after going aftermarket.
"sony1492" (sony1492)
10/04/2017 at 11:44, STARS: 1
I know how exhaust leaks can get annoying, if you have the means replace it. Also if it’s bad enough it could screw with the downstream o2 sensor readings
"CobraJoe" (cobrajoe)
10/04/2017 at 11:54, STARS: 3
Buy a used header, sell it in a year for the same as what you paid.
"Funktheduck" (funktheduck)
10/04/2017 at 11:58, STARS: 1
I’d look for something used. Either stock manifold or headers. You would likely be able to resell at or near what you paid since they’re not wear items
"Wrong Wheel Drive (41%)" (rduncan5678)
10/04/2017 at 12:22, STARS: 1
I like the Cobalt header I have on my NB, but I did all of my exhaust at once (because it was easier) so I didnt really have a comparison test of just what the header is doing versus the rest of the roadstersport stuff. I believe in general the aftermarket headers on the market for a Miata just add a bit of a raspier tone than stock and single digit horsepower gains. I only did it because I picked it up used though for a great deal. Unfortunately when I go to register my car in California, I will have to source a stock header to pass CARB standards since no aftermarket ones pass for me =(
Also, if you do search for a specific one definitely get the Racing Beat header. Its the ONLY one with a posted dyno sheet, so everything else is a big question mark about actual power gains.
"AestheticsInMotion" (aestheticsinmotion)
10/04/2017 at 20:46, STARS: 0
A used racing beat header would be ideal. At this point though I’m pretty much content knowing that there will be no additional power gained until I go forced induction.
I remember a build thread a while back where a guy decided to go for a high-power build while keeping things naturally aspirated in his NA. He made it to about 175whp, after spending somewhere in the neighborhood of $25,000.
"Wrong Wheel Drive (41%)" (rduncan5678)
10/05/2017 at 09:01, STARS: 1
Haha holy shit, yeah I’ve heard stories like that. The amount of work to get NA power is absurd in a Miata. Its always ridiculously easier to go FI for it. What turbo setup are you planning? I definitely would want to go supercharger just because install is WAY easier and I like the power band. Although I’ve generally seen most people go the turbo route. My biggest issue though is the amount of cooling issues people have. I have yet to see someone have no issues with cooling during track days running FI of any sort in a NA/NB Miata.
"AestheticsInMotion" (aestheticsinmotion)
10/06/2017 at 01:15, STARS: 1
I’m currently planning on getting the big items from track dog racing, and sourcing everything else from... Well. Wherever. Of course it’s easy to say that now, we’ll see if I change my mind when I get closer to the whole payment thing haha. 250whp is the end goal for this car, sticking to the multi-tool build where it can handle a little bit of everything. Supercharger would be great for exactly the reasons you listed, but I don’t think there are any options that come close to where I want to be, power-wise.
It’s sad when an LS swap is easier to properly cool than a moderately boosted stock engine. Or awesome, depending on how you look at it