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X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: <13brv3@bellsouth.net> Received: from imf05aec.mail.bellsouth.net ([205.152.59.53] verified) by logan.com (CommuniGate Pro SMTP 4.3.6) with ESMTP id 1059562 for flyrotary@lancaironline.net; Mon, 18 Jul 2005 12:58:00 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.53; envelope-from=13brv3@bellsouth.net Received: from ibm63aec.bellsouth.net ([65.6.194.9]) by imf21aec.mail.bellsouth.net with ESMTP id <20050718161354.VTET17746.imf21aec.mail.bellsouth.net@ibm63aec.bellsouth.net> for ; Mon, 18 Jul 2005 12:13:54 -0400 Received: from rd ([65.6.194.9]) by ibm63aec.bellsouth.net with ESMTP id <20050718161349.FSXV19563.ibm63aec.bellsouth.net@rd> for ; Mon, 18 Jul 2005 12:13:49 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "Flyrotary List" Subject: EM-2 and fuel flow questions Date: Mon, 18 Jul 2005 11:13:49 -0500 Message-ID: <008401c58bb3$ae97fbd0$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0085_01C58B89.C5C1F3D0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 This is a multi-part message in MIME format. ------=_NextPart_000_0085_01C58B89.C5C1F3D0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Greetings, =20 First, I still haven't tried the auto tune yet, but should give it a = full test when I build the new intake. I wasn't going to do the intake now, = but since my garage is full of stuff that should be outside in the destroyed screen room, I can't really work on the Kolb. Frequent readers will = also realized that I didn't need much of an excuse :-) =20 Tracy, I'm happy to report that I've seen no further wacky behavior on = the EM-2 since installing the new software. Before, it had a tendency to display wildly incorrect numbers on occasion, such as 60 gph, and the = only fix was to turn it off and back on. It also used to show fuel flow when = the engine wasn't running. So far, so good on all that. Thanks! =20 Yesterday, I was showing 24.5 gph at 8000 ft and WOT. Let's hope that's = not true :-) Now that I can get serious about getting this set correctly, I looked at the FF cal. I presume the 151 number is set for the stock = Mazda "460" injectors. From what I can tell from the archives, Mazda doesn't = use standard practice for rating these, and in fact, they seem to test much higher when using standard methods. One example I found was someone who = had 4 of these "460" injectors tested, and they each flowed 520. When I = take 520, compared to my current 400 injectors, there's a 23% difference, so = I'll raise the 151 cal factor by 23% to 186 and see what that gives me. It's also interesting to note that taking 23% off my 24.5 gph figure gives = 18.9 gph, which is far close to what I'd expect at max power. =20 =20 Now for a question- I've seen figures for Brake Specific Fuel = Consumption (BSFC) in the .55 range for a non-turbo rotary. If I were going to use = this factor to calculate HP from fuel flow, what mixture would I need to be = at? Is this for best power, 14.7, or does it even matter? =20 =20 Another question for Tracy- Does the Max HP figure do anything other = than changing what is displayed on the screen for HP? I would presume the % power figure should always be correct, but if you put the wrong max HP factor in, then your displayed HP would be wrong. =20 =20 Final question for Tracy- How much did John pay you to sabotage Buly's = EC-2 :-) =20 Thanks, Rusty (catching up to Ed on the intake count) ------=_NextPart_000_0085_01C58B89.C5C1F3D0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

Greetings,

First, I still = haven't=20 tried the auto tune yet, but should give it a full test when I build the = new=20 intake. I wasn't going to do the intake now, but since my garage = is full=20 of stuff that should be outside in the destroyed screen room, I can't = really=20 work on the Kolb. Frequent readers will also realized that I = didn't need=20 much of an excuse :-)

Tracy, I'm = happy to report=20 that I've seen no further wacky behavior on the EM-2 since installing = the new=20 software. Before, it had a tendency to display wildly incorrect = numbers on=20 occasion, such as 60 gph, and the only fix was to turn it off and back = on. =20 It also used to show fuel flow when the engine wasn't running. So = far, so=20 good on all that. Thanks!

Yesterday, I = was showing=20 24.5 gph at 8000 ft and WOT. Let's hope that's not true :-) = Now that=20 I can get serious about getting this set correctly, I looked at the FF=20 cal. I presume the 151 number is set for the stock Mazda "460"=20 injectors. From what I can tell from the archives, Mazda doesn't = use=20 standard practice for rating these, and in fact, they seem to test much = higher=20 when using standard methods. One example I found was someone who = had 4 of=20 these "460" injectors tested, and they each flowed 520. When I = take 520,=20 compared to my current 400 injectors, there's a 23% difference, so I'll=20 raise the 151 cal factor by 23% to 186 and see what that gives = me. =20 It's also interesting to note that taking 23% off my 24.5 gph figure = gives 18.9=20 gph, which is far close to what I'd expect at max=20 power.

Now for a=20 question- I've seen figures for Brake Specific Fuel Consumption = (BSFC) in=20 the .55 range for a non-turbo rotary. If I were going to = use=20 this factor to calculate HP from fuel flow, what mixture would I = need to be=20 at? Is this for best power, 14.7, or does it even=20 matter?

Another = question for Tracy-=20 Does the Max HP figure do anything other than changing what is = displayed on=20 the screen for HP? I would presume the % power figure should = always be=20 correct, but if you put the wrong max HP factor in, then your = displayed HP=20 would be wrong.

Final question = for Tracy-=20 How much did John pay you to sabotage Buly's EC-2 = :-)

Thanks,

Rusty (catching = up to Ed on=20 the intake count)

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