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-   -   Need AFR help with LC-1 and BEGI FMU (https://www.miataturbo.net/diy-turbo-discussion-14/need-afr-help-lc-1-begi-fmu-10303/)

rotaryjunky 06-01-2007 05:22 PM

Need AFR help with LC-1 and BEGI FMU
 
I am going to the dragstrip in a few hours with a bunch of other faster cars that I still need to try and beat. I have been running so rich lately that I pop when I shift, so I backed out the adjuster on the FMU a few times and did logs. I really want you guys to look at my afrs but how do I post the .log files?

Ben 06-01-2007 05:56 PM

popping when you shift is because you are running an AFM and a BOV that dumps to atmo. It's because you dump out a lot of metered air so you're a bit rich while decelerating.

It doesn't mean that you're running too rich while in boost.

Take a screenshot of the run, save it as a png or bmp and upload it to a hosting site like imageshack. then use the insert image button on here.

rotaryjunky 06-01-2007 06:07 PM

1 Attachment(s)
Attachment 216429

Ben 06-01-2007 06:12 PM

zoom in and show just one run per image

you may need to upload multiple images

rotaryjunky 06-01-2007 06:23 PM

1 Attachment(s)
Attachment 216428

Braineack 06-01-2007 06:33 PM

keep the laptop ready to record...get in third gear...hit 2500rpms...hit record...floor it...stop recording.

Ben 06-01-2007 06:39 PM

yeah those aren't full gear pulls. but it looks like you're 11.75:1 going to 12.0:1.

I'd like to see a whole pull...

rotaryjunky 06-01-2007 06:43 PM


Originally Posted by Braineack (Post 119508)
keep the laptop ready to record...get in third gear...hit 2500rpms...hit record...floor it...stop recording.

I knew I should have done that.:vash:

Wish me luck tonight anyways. Although I am more excited about the ferrari 360 race! I won't be redlining in third, anyways, cause its just the eighth.

rotaryjunky 06-05-2007 04:44 PM

1 Attachment(s)
Drag racing went well. Raced a friend of a friend who said his 97 eclipse could run 8s, it can't. Also smoked a magnum truck and a beefed up montecarlo. Even though my eighth was only 9.8, it was pretty fast for the track/weather. The only cars faster were the seriously modded awds and v8s with slicks. 10psi will be ready for the next one, hopefully. I am curious to see the absolute max limit of the stock clutch. I'll turn the boost back down until I buy the ACT. Thanks for looking at my AFRs, heres the 3rd gear run today...

Attachment 216395

rotaryjunky 06-07-2007 06:43 PM

Am I about right or should I tweak this at all?

magnamx-5 06-07-2007 07:02 PM

Lean it out abit past 6K rpm and you should pick up a little power try for 12.4-1 past there.

rotaryjunky 06-07-2007 07:41 PM

Thanks man! I will shoot for that when we go 10psi, also.

Ben 06-07-2007 09:59 PM

there is no way to lean it out after a certain rpm. the ecu goes nuts at 5500 rpm, and injector duty cycle shoots towards 90%. it's going to be rich up top. you'll still make power. when/if you go standalone, you can get your flat a/f curve.


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