07-31-2015, 07:39 PM | #281 |
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08-01-2015, 12:09 AM | #282 |
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It's not the issue of whether the vehicle is tuned with the header, or not. Rather, whether or not the tune will allow the vehicle to pass an OBD2 system readiness check.
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08-01-2015, 02:38 AM | #283 | |
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Quote:
appears not even eutek does force readyness the romraider guys appear to have hacked the ecu code to force readyness on some wrx ecu roms but that hack\patch not available for brz ecu http://www.ft86club.com/forums/showp...27&postcount=7 Last edited by steve99; 08-01-2015 at 02:50 AM. |
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08-01-2015, 12:58 PM | #284 |
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Well thank god I live in a state I don't have to worry about it. The actually got rid of emissions testing about 10 years ago here.
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08-01-2015, 05:27 PM | #285 |
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08-03-2015, 08:26 AM | #286 |
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In Texas you can pass with a max of 1 system showing NOT READY. It's how I got my WRX to pass inspection
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The Following User Says Thank You to ScionOfHorus For This Useful Post: | CSG Mike (08-03-2015) |
08-03-2015, 01:43 PM | #287 |
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Anyways...
Hey Mike, do these headers come with gaskets or not? Just trying to decide if I want to save my new gaskets for this header or go ahead and use them for my rebuild. Thanks. |
08-03-2015, 03:44 PM | #288 |
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The fitment is dead on, but OEM gaskets are not exactly expensive either. The header does not include a header-head gasket. I're recommend you use your gaskets for your rebuild, and just get another set when you get your header.
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08-18-2015, 02:49 PM | #289 |
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Copy pasta from another thread.
E85 gains are lesser on the Ace header, due to the header itself being more efficient. E85's big advantage is that it allows for the majority of the inefficiencies of many headers to be masked. E85 is proven to add a solid 35whp to an otherwise stock car with tune, but on the Ace, it's worth 12-15whp at best, NA. The primary issue is that during the exhaust stroke, the FA20 has difficulty pushing out the exhaust gas. No header will allow for 100% evacuation, but a higher flowing header will allow for more evacuation of the cylinder. If you pull more exhaust gas out of the cylinder, then less is remaining, when the exhaust valve closes, and the next intake stroke begins. This means the intake charge is cooler, allowing for more aggressive timing. Now, E85 evaporates exceptionally well, and when it atomizes and evaporates, it absorbs heat out of the intake charge, which, allows for more timing. At some point, adding more ignition advance timing doesn't yield more torque. This is MBT. On most headers, you cannot be anywhere CLOSE to MBT, but the addition of E85 allows you to get there. The Ace is already at MBT, so the gains of E85 are minimal. As an aside, Hondas are know for exceptionally well flowing heads and headers. The K20 and F2xC engines also gain 10-15whp at best, with an E85 tune. The primary reason for the Ace being able to flow better, is scavenging. The runner lengths are calculated to overlap at specific intervals. The exhaust gas pulse traveling out of one cylinder will overlap with the exhaust stroke of another, which adds a "suction" effect (Bernoulli), which allows for more evacuation of the other cylinder. For the pulses to overlap with that specificity, it turns out that the runners need to be long. Very long. Hence, the design. Now, when you add FI to the mix, the Ace header's benefits get multiplied... its almost scary. |
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08-18-2015, 02:53 PM | #290 | |
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Quote:
Estimated power gain on 93 with JRSC? Sent from my XT1095 using Tapatalk
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08-18-2015, 03:01 PM | #291 |
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08-18-2015, 03:04 PM | #292 | |
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Quote:
Sent from my XT1095 using Tapatalk
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08-18-2015, 03:09 PM | #293 |
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Very curious about JRSC on E85 and ACE, frankly maybe the question should be any header as you have said that MBT is close already with E85, is the investment of $700-$1600 even a worthwhile venture.
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08-18-2015, 03:14 PM | #294 | |
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Quote:
If you're doing a cost benefit analysis, how's this: Tomei header + FF kit + FF tune vs Ace header + 91 tune The Ace still makes more power, if the front pipe is in place.... |
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