Menu
Home
Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Reply to thread
Click here to become an Official Member of BMW Club Malaysia
Download Form
Home
Forums
BMW Tech and Performance
Engine Tech
Group dyno Session???
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="fabianyee" data-source="post: 463823" data-attributes="member: 6"><p>Today's session ran well.... I had planned to leave earlier but ended up staying till the last car.... Total 16 cars were dynoed... The most impressive one should be kamion's 335i with 280PS and 456Nm on wheel.....</p><p></p><p>I hope everyone had some good education on reading the dyno chart, especially the air/fuel ratio readings... A good AFR reading would translate to good power and torque output... </p><p></p><p></p><p>This is my dyno chart</p><p></p><p><strong><span style="color: Blue">BLUE</span></strong> - last run in Dec 09</p><p><strong><span style="color: Red">RED</span></strong> - Today's run</p><p></p><p><img src="http://img.photobucket.com/albums/v621/fabianyee/Dyno%20chart/MV784920101024_01.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Compared to the last dyno in 27 Dec 2009, I lost 1.2hp peak power but overall power is slightly higher at lower RPM.. I think this engine likes it leaner between 5,500 to 6,700rpm, based on the chart.. </p><p></p><p>However, gain 1.74kgm (17Nm) max torque.. also can see increase in torque across the rev range... Max torque is now 17.47Kgm (171.2Nm).. This seem to be a very good figure for a NA 1.8.... However, not too sure whether the Dynojet has been calibrated recently... Since my last dyno was 10 months ago...</p><p></p><p>Torque increase should be due to the tweak I did to the exhaust... I did feel the difference after the tweak and the dyno chart confirmed it....</p></blockquote><p></p>
[QUOTE="fabianyee, post: 463823, member: 6"] Today's session ran well.... I had planned to leave earlier but ended up staying till the last car.... Total 16 cars were dynoed... The most impressive one should be kamion's 335i with 280PS and 456Nm on wheel..... I hope everyone had some good education on reading the dyno chart, especially the air/fuel ratio readings... A good AFR reading would translate to good power and torque output... This is my dyno chart [B][COLOR=Blue]BLUE[/COLOR][/B] - last run in Dec 09 [B][COLOR=Red]RED[/COLOR][/B] - Today's run [IMG]http://img.photobucket.com/albums/v621/fabianyee/Dyno%20chart/MV784920101024_01.jpg[/IMG] Compared to the last dyno in 27 Dec 2009, I lost 1.2hp peak power but overall power is slightly higher at lower RPM.. I think this engine likes it leaner between 5,500 to 6,700rpm, based on the chart.. However, gain 1.74kgm (17Nm) max torque.. also can see increase in torque across the rev range... Max torque is now 17.47Kgm (171.2Nm).. This seem to be a very good figure for a NA 1.8.... However, not too sure whether the Dynojet has been calibrated recently... Since my last dyno was 10 months ago... Torque increase should be due to the tweak I did to the exhaust... I did feel the difference after the tweak and the dyno chart confirmed it.... [/QUOTE]
Verification
Post reply
Home
Forums
BMW Tech and Performance
Engine Tech
Group dyno Session???
Top
Bottom
