2010 FLSTC Stage 1 dyno results - comments?

Hoople

Bud,
Don't you think that is a bit lean for wide open throttle.? Yes, for 25% throttle cruise Mid 13's is not lean but for a WOT flat out run wouldn't you really like it in the 12's. What do you think?

Bud White

yes for a Wot run you would expect it to dip to 12.x i did say that in second post but for most cruising 13.x is good .. but usually the tuners are not adjusting the wot as thats a different setup in the computer and it hits that on its own at least ist supposed to ..

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"Tell me where I'm going, let my bones fall in the Dust, can't you hear that Ghost thats Calling as my Colt begins to Rust, in the Dust"

Keithhu

The AFR line is *very* flat throughout the range.

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Bud White

can ya turn the pic with the afr 90 degrees so it readable when ya look at it?

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"Tell me where I'm going, let my bones fall in the Dust, can't you hear that Ghost thats Calling as my Colt begins to Rust, in the Dust"

Hoople

Bud,
Yes, I was actually replying to entry point #7 when you came in with #9.
You read my mind!

Hoop!

To know if that is Good or Bad you need to know what the "desired" A/F ratio map looks like.
If the "desired" A/F radio WAS 13.4 across the RPM spectrum, then your V/E table is near perfect. If the "desired" A/F ratio was something other than 13.4, your V/E map needs to be modified.

And just to add more confusion to the mix, each cylinder has its own A/F ratio .

Keithhu

Yer killin me.

What constitutes 'desired'?

I'll turn it around, standby...

Here ya go

Attached Thumbnails

 

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Bound to cover just a little more ground!

Bud White

Nice smooth AFR line looks about 13.2 little twitchy at 2k-2500

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"Tell me where I'm going, let my bones fall in the Dust, can't you hear that Ghost thats Calling as my Colt begins to Rust, in the Dust"

Hoople

What you WANT the A/F ratio to be is the desired A/F Ratio. Those are the numbers you place in your A/F ratio map using a Laptop.
But even though you may WANT (or enter) the A/F ratio to be a certain value, when you check it with an Infra-Red exhaust analyzer it may be something else. To correct that difference between the desired and actual, you must modify your V/E map table.

The V/E map table is the volumetric efficiency table or how well the engine is an "air pump". The better it can breath, the higher the volumetric efficiency.

Hoop!

Keith,
Would you happen to know how long in seconds those pulls were?
I don't see anywhere where it states that. Also are you actually above sea level where those pulls were made? (28.64" HG)

Hoop!

Keithhu

Ok, thanks, Bud. Not knowing any better, I just wanted some independent verification that quality work was done. Being very new to this, I feel like its easy to get hoodwinked.

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Bound to cover just a little more ground!

Bud White

it is .. one reason i asked if it was motor city i know couple engines that melted down from there

__________________
"Tell me where I'm going, let my bones fall in the Dust, can't you hear that Ghost thats Calling as my Colt begins to Rust, in the Dust"