X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 29 Dec 2005 10:12:30 -0500 Message-ID: X-Original-Return-Path: Received: from smtpauth01.mail.atl.earthlink.net ([209.86.89.61] verified) by logan.com (CommuniGate Pro SMTP 5.0.5) with ESMTP id 904868 for lml@lancaironline.net; Thu, 29 Dec 2005 03:20:24 -0500 Received-SPF: none receiver=logan.com; client-ip=209.86.89.61; envelope-from=skipslater@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=fDyw8ZVN1iqp7Mx3fV2Ci5aSnbcBcZRNeKuxiIdrps5oBbQjJ697vd0ytZKTyFEg; h=Received:Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE:X-ELNK-Trace:X-Originating-IP; Received: from [71.116.167.28] (helo=wbs) by smtpauth01.mail.atl.earthlink.net with asmtp (Exim 4.34) id 1Erss4-0003oG-9v for lml@lancaironline.net; Thu, 29 Dec 2005 03:10:48 -0500 X-Original-Message-ID: <003901c60c4f$65279380$6401a8c0@wbs> From: "Skip Slater" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Power gone? Where? LSE Timing revealed X-Original-Date: Thu, 29 Dec 2005 00:10:48 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0034_01C60C0C.527AFAD0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-ELNK-Trace: cbee950bdf563876c8ad50643b1069f8239a348a220c2609f45465b1e6c3989922d265d892148afc666fa475841a1c7a350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 71.116.167.28 This is a multi-part message in MIME format. ------=_NextPart_000_0034_01C60C0C.527AFAD0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Scott, Thanks for the data. Unfortunately, there's not much I can do with = it other than see what you've experienced. I did find it interesting to = note the linear relationship between MAP and spark advance, which pretty = much confirms how I believed it to be. It would also substantiate = Brent's claim that timing advances aren't really needed in a = turbocharged engine, as they're based upon MAP decreasing with altitude = in a normally aspirated engine. When George says varying timing can be = of benefit in a turbocharged engine, I know he's using internal cylinder = pressure (ICP) as his barometer, not MAP and that's what makes the PRISM = system so unique. I'm not an engineer and I don't have a test stand to do any serious = evaluation of any of this stuff. All I know is that my engine runs = great with my LSE and since installing it over two years ago, it's = worked flawlessly. I can't say that for my magneto, but I won't be = parting with it anytime soon just the same. Skip Slater ------=_NextPart_000_0034_01C60C0C.527AFAD0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Scott,

Thanks for the data. = Unfortunately, there's not much I can do with it other than see what = you've=20 experienced. I did find it interesting to note the linear = relationship=20 between MAP and spark advance, which pretty much confirms how I = believed it=20 to be. It would also substantiate Brent's claim that timing = advances=20 aren't really needed in a turbocharged engine, as they're based upon MAP = decreasing with altitude in a normally aspirated engine. When = George=20 says varying timing can be of benefit in a = turbocharged=20 engine, I know he's using internal cylinder pressure (ICP) as his = barometer, not=20 MAP and that's what makes the PRISM system so unique.

I'm not an engineer and I don't = have a test=20 stand to do any serious evaluation of any of this stuff. All I = know is=20 that my engine runs great with my LSE and since installing it over two = years=20 ago, it's worked flawlessly. I can't say that for my magneto, but = I won't=20 be parting with it anytime soon just the same.

Skip = Slater

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